CN111359621A - Photocatalytic degradation composite particle and preparation method and application thereof - Google Patents
Photocatalytic degradation composite particle and preparation method and application thereof Download PDFInfo
- Publication number
- CN111359621A CN111359621A CN202010157853.1A CN202010157853A CN111359621A CN 111359621 A CN111359621 A CN 111359621A CN 202010157853 A CN202010157853 A CN 202010157853A CN 111359621 A CN111359621 A CN 111359621A
- Authority
- CN
- China
- Prior art keywords
- particles
- photocatalytic degradation
- nano
- degradation composite
- titanium dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013033 photocatalytic degradation reaction Methods 0.000 title claims abstract description 34
- 239000011246 composite particle Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 20
- 239000010902 straw Substances 0.000 claims abstract description 20
- 239000013078 crystal Substances 0.000 claims abstract description 19
- 239000007822 coupling agent Substances 0.000 claims abstract description 16
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 14
- 235000009566 rice Nutrition 0.000 claims abstract description 14
- 240000008042 Zea mays Species 0.000 claims abstract description 13
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 13
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 13
- 235000005822 corn Nutrition 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000002351 wastewater Substances 0.000 claims abstract description 7
- 240000007594 Oryza sativa Species 0.000 claims abstract 3
- 238000003756 stirring Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 15
- 238000001354 calcination Methods 0.000 claims description 13
- 238000002791 soaking Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010419 fine particle Substances 0.000 claims 1
- 239000002105 nanoparticle Substances 0.000 claims 1
- ZXJXZNDDNMQXFV-UHFFFAOYSA-M crystal violet Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1[C+](C=1C=CC(=CC=1)N(C)C)C1=CC=C(N(C)C)C=C1 ZXJXZNDDNMQXFV-UHFFFAOYSA-M 0.000 abstract description 9
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 238000006731 degradation reaction Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001699 photocatalysis Effects 0.000 abstract description 4
- 238000007146 photocatalysis Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000007795 chemical reaction product Substances 0.000 abstract description 2
- 239000004408 titanium dioxide Substances 0.000 abstract description 2
- 239000003337 fertilizer Substances 0.000 abstract 1
- 241000209094 Oryza Species 0.000 description 11
- 239000011941 photocatalyst Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 208000003643 Callosities Diseases 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/847—Vanadium, niobium or tantalum or polonium
- B01J23/8472—Vanadium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
The invention relates to the technical field of photocatalysis, in particular to photocatalytic degradation composite particles and a preparation method and application thereof; the photocatalytic degradation composite particle comprises the following components: nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4The crystal particles and the coupling agent can produce silicon dioxide particles by using rice straws and produce triclinic FeVO by using corn straws4Crystalline particles, p-triclinic FeVO4The crystal particles, the silicon dioxide particles and the nano-scale anatase titanium dioxide are mixed by using the coupling agent, and the methyl violet can be completely degraded within 150min in the laboratory environment, the degradation capability of the reaction product on waste water is strong, and the titanium dioxide is greatly reducedThe using amount of the fertilizer reduces the production cost, realizes the treatment of wastes with processes of wastes against one another, and provides a new application for the structure of the rice straw and the corn.
Description
Technical Field
The invention relates to the technical field of photocatalysis, in particular to photocatalytic degradation composite particles and a preparation method and application thereof.
Background
With the continuous and rapid development of industrialization and urbanization, the traditional coal-smoke type pollution is not controlled, the composite air pollution caused by automobile exhaust is increasingly prominent, secondary pollution such as fine particulate matters, ozone, acid rain and the like in cities is aggravated by a large amount of nitrogen oxides and volatile organic compounds, a large amount of domestic wastewater and industrial wastewater are generated, currently, a photocatalyst is added for photolysis when people treat wastewater, the degradation effect of the photocatalyst is good, and secondary pollution is avoided, but the manufacturing cost of the photocatalyst particles is high at present, the photocatalyst particles are difficult to use in a large area, meanwhile, in order to treat air pollution, rice straws, corn straws and the like in farmlands are forbidden to be burnt, but the rice straws and the corn straws are left in the farmlands to influence the next year of cultivation, therefore, the government also actively encourages enterprises to buy the rice straws and the corn straws for processing production, however, at present, the application of the rice straws and the corn straws is too little, the market demand is too low, and how to increase the application of the rice straws and the corn straws is also a big problem to be solved at present.
Disclosure of Invention
In order to solve the problems, the invention provides a photocatalytic degradation composite particle and a preparation method and application thereof.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the invention provides a photocatalytic degradation composite particle, which comprises the following components: nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4Crystal particles and a coupling agent; wherein, the nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4The mass ratio of the crystal particles to the coupling agent is as follows: 1:2-4:1-2:0.1-0.3.
As a further improvement of the photocatalytic degradation composite particle of the present invention, preferred isThe particle size of the nano-grade anatase titanium dioxide is 15-100 nm, the diameter of the silicon dioxide particles is 50-140 nm, and the triclinic FeVO430-70nm of the crystal particles.
As a further improvement of the photocatalytic degradation composite particle of the present invention, preferably, the coupling agent is any one of γ -aminopropyltriethoxysilane, γ -glycidoxypropyltrimethoxysilane, and titanate coupling agent.
The invention also provides a preparation method of the photocatalytic degradation composite particle, which comprises the following steps:
s1: nano-grade anatase TiO2Baking in a baking oven at 110 ℃ for 12h, and sealing;
s2: putting the cleaned rice straws into a muffle furnace, fully calcining for 4-6h at 500 ℃, collecting ash, putting the ash into a blender, adding water, grinding into homogenate, and filtering to remove soluble salt; sieving the residue on the filter paper through a 400-mesh sieve under the washing of water, and collecting sieved particles; suspending the sieved particles in a container, naturally precipitating for 10-15min, and removing the upper suspension; repeating the natural precipitation process for 6-8 times to obtain pure silicon dioxide particles;
s3: peeling corn stalk, cutting into lcm cylinder, soaking in 10% dilute hydrochloric acid for 48 hr, repeatedly washing with distilled water until chloride ion is washed, drying at 80 deg.C for 24 hr, and soaking in FeVO4Vacuumizing for 30min, standing for 4h, taking out, and drying at 80 ℃; drying, putting into a muffle furnace, and fully calcining for 4-6h at the temperature of 500-700 ℃ to prepare the triclinic FeVO4Crystal particles;
s4: mixing nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4The crystal particles are placed into a stirrer for dispersion according to the mass ratio of 1:2-4:1-2, the stirring speed is 2500-; then adding the nano-scale anatase titanium dioxide in a mass ratio of 1: 0.1 to 0.3 of coupling agent, continuously stirring for 20 to 30min, heating to 80 ℃ after stirring, and preserving heat for 12h to obtain the photocatalytic degradation composite particles.
As a further improvement of the preparation method of the photocatalytic degradation composite particle of the present invention, in step 3, preferably, the calcination temperature in the muffle furnace is 550 ℃, the calcination time is 4 hours, and the temperature of the muffle furnace is gradually increased at a rate of 5 ℃/min.
The invention also provides application of the photocatalytic degradation composite particles, wherein the photocatalytic degradation composite particles are uniformly scattered in a wastewater tank or dissolved in water and sprayed into the wastewater tank through a sprayer, and the dosage of the photocatalytic degradation composite particles is 0.1-0.15g/m3And the depth of the wastewater pond is less than 1 m.
Compared with the prior art, the invention has the beneficial effects that: the photocatalytic degradation composite particle, the preparation method and the application thereof can produce silicon dioxide particles by using rice straws and produce triclinic FeVO (FeVO)4Crystalline particles, p-triclinic FeVO4The crystal particles, the silicon dioxide particles and the nano-scale anatase titanium dioxide are mixed by using the coupling agent, the methyl violet can be completely degraded within 150min in a laboratory environment, the degradation capability of the reaction product on waste water is strong, the use amount of the titanium dioxide is greatly reduced, the production cost is reduced, the waste treatment by waste is realized, and a new application is provided for the structures of rice straws and corns.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Nano-grade anatase TiO2Baking in a baking oven at 110 ℃ for 12h, and sealing; putting the cleaned rice straws into a muffle furnace, fully calcining for 4 hours at 500 ℃, collecting ash, putting the ash into a blender, adding water, grinding into homogenate, and filtering to remove soluble salt; sieving the residue on the filter paper through a 400-mesh sieve under the washing of water, and collecting sieved particles; suspending the sieved granules in a container, and naturally precipitating for 10min, thenThen removing the upper layer suspension; repeating the natural precipitation process for 6 times to obtain pure silicon dioxide particles; peeling corn stalk, cutting into lcm cylinder, soaking in 10% dilute hydrochloric acid for 48 hr, repeatedly washing with distilled water until chloride ion is washed, drying at 80 deg.C for 24 hr, and soaking in FeVO4Vacuumizing for 30min, standing for 4h, taking out, and drying at 80 ℃; drying, placing in a muffle furnace, and fully calcining at 500 ℃ for 4-6h to prepare the triclinic FeVO4Crystal particles; mixing nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4The crystal particles are placed into a stirrer to be dispersed according to the mass ratio of 1:2:1, the stirring speed is 3000rpm, and the stirring time is 30 min; then adding the nano-scale anatase titanium dioxide in a mass ratio of 1: and (3) continuously stirring for 20min by using 0.1 titanate coupling agent, heating to 80 ℃ after stirring, and keeping the temperature for 12h to obtain the photocatalytic degradation composite particles.
Example 2
Nano-grade anatase TiO2Baking in a baking oven at 110 ℃ for 12h, and sealing; putting the cleaned rice straws into a muffle furnace, fully calcining for 6 hours at 500 ℃, collecting ash, putting the ash into a blender, adding water, grinding into homogenate, and filtering to remove soluble salt; sieving the residue on the filter paper through a 400-mesh sieve under the washing of water, and collecting sieved particles; suspending the sieved particles in a container, naturally precipitating for 15min, and removing the upper suspension; repeating the natural precipitation process for 8 times to obtain pure silicon dioxide particles; peeling corn stalk, cutting into lcm cylinder, soaking in 10% dilute hydrochloric acid for 48 hr, repeatedly washing with distilled water until chloride ion is washed, drying at 80 deg.C for 24 hr, and soaking in FeVO4Vacuumizing for 30min, standing for 4h, taking out, and drying at 80 ℃; drying, placing in a muffle furnace, fully calcining for 4h at 550 ℃ to prepare the triclinic FeVO4Crystal particles; mixing nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4The crystal particles are placed into a stirrer to be dispersed according to the mass ratio of 1:3:2, the stirring speed is 2500rpm, and the stirring time is 40 min; then adding the nano-scale anatase titanium dioxide in a mass ratio of 1: 0.2 of coupling agent, continuously stirring for 30min, heating to 80 ℃ after stirring, and preserving heatAnd (5) obtaining the photocatalytic degradation composite particles after 12 hours.
Example 3
Nano-grade anatase TiO2Baking in a baking oven at 110 ℃ for 12h, and sealing; putting the cleaned rice straws into a muffle furnace, fully calcining for 5 hours at 500 ℃, collecting ash, putting the ash into a blender, adding water, grinding into homogenate, and filtering to remove soluble salt; sieving the residue on the filter paper through a 400-mesh sieve under the washing of water, and collecting sieved particles; suspending the sieved particles in a container, naturally precipitating for 10min, and removing the upper suspension; repeating the natural precipitation process for 7 times to obtain pure silicon dioxide particles; peeling corn stalk, cutting into lcm cylinder, soaking in 10% dilute hydrochloric acid for 48 hr, repeatedly washing with distilled water until chloride ion is washed, drying at 80 deg.C for 24 hr, and soaking in FeVO4Vacuumizing for 30min, standing for 4h, taking out, and drying at 80 ℃; drying, placing in a muffle furnace, fully calcining for 4h at 700 ℃ to prepare the triclinic FeVO4Crystal particles; mixing nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4The crystal particles are placed into a stirrer for dispersion according to the mass ratio of 1:4:2, the stirring speed is 2500-; then adding the nano-scale anatase titanium dioxide in a mass ratio of 1: and (3) continuously stirring the coupling agent for 30min, heating to 80 ℃ after stirring, and keeping the temperature for 12h to obtain the photocatalytic degradation composite particles.
Examples of the experiments
The effect of degrading methyl violet by photocatalysis is taken as a reference standard of photocatalysis performance;
photocatalytic degradation of methyl violet 20ml of a methyl violet solution of 25mg/L, pH ═ 6.5 was added to a 10cm diameter petri dish, 40mg of the photocatalytic degradation composite particles prepared in examples 1 to 3 were added, and the mixture was allowed to stand in the dark for 30min to allow the dye and the photocatalytic degradation composite particles to reach adsorption equilibrium and then to start the photocatalytic reaction. Taking the dye light absorption value as an initial reaction value, centrifuging at 6000r/min for 5min, performing spectral scanning on the supernatant at the position of 200-700nm of a UV-vis spectrophotometer, measuring the dye absorption spectrum, and sampling every 30min to detect the concentration of the methyl violet; the photocatalytic degradation methyl violet test is repeated for 3 times, and the obtained average experimental data are shown in the following table:
table 1 shows the degradation rates of the photocatalytic degradation of composite particles at different degradation times
| 30min | 60min | 90min | 120min | 150min | |
| Example 1 | 36％ | 53％ | 80％ | 92％ | 100％ |
| Example 2 | 40％ | 57％ | 84％ | 97％ | 100％ |
| Example 3 | 38％ | 55％ | 81％ | 94％ | 100％ |
The table shows that the photocatalytic degradation composite particle prepared by the preparation method can obtain the highest methyl violet degradation rate of 97% in 120 min; the methyl violet can be completely degraded within 150min, which shows that the photocatalytic degradation composite particles have good effect on degrading sewage.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A photocatalytic degradation composite particle is characterized by comprising the following components: nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4Crystal particles and a coupling agent; wherein, the nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4The mass ratio of the crystal particles to the coupling agent is as follows: 1:2-4:1-2:0.1-0.3.
2. The photocatalytic degradation composite particle as claimed in claim 1, wherein the nano-sized anatase titanium dioxide has a particle size of 15 to 100nm, the diameter of the silica fine particle is 50 to 140nm, and the triclinic FeVO430-70nm of the crystal particles.
3. The photocatalytic degradation composite particle as claimed in claim 1, wherein the coupling agent is any one of gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane, and titanate coupling agent.
4. A preparation method of photocatalytic degradation composite particles is characterized by comprising the following steps:
s1: nano-grade anatase TiO2Baking in a baking oven at 110 ℃ for 12h, and sealing;
s2: putting the cleaned rice straws into a muffle furnace, fully calcining for 4-6h at 500 ℃, collecting ash, putting the ash into a blender, adding water, grinding into homogenate, and filtering to remove soluble salt; sieving the residue on the filter paper through a 400-mesh sieve under the washing of water, and collecting sieved particles; suspending the sieved particles in a container, naturally precipitating for 10-15min, and removing the upper suspension; repeating the natural precipitation process for 6-8 times to obtain pure silicon dioxide particles;
s3: peeling corn stalk, cutting into lcm cylinder, soaking in 10% dilute hydrochloric acid for 48 hr, repeatedly washing with distilled water until chloride ion is washed, drying at 80 deg.C for 24 hr, and soaking in FeVO4Vacuumizing for 30min, standing for 4h, taking out, and drying at 80 ℃; drying, putting into a muffle furnace, and fully calcining for 4-6h at the temperature of 500-700 ℃ to prepare the triclinic FeVO4Crystal particles;
s4: mixing nano-grade anatase titanium dioxide, silicon dioxide particles and triclinic FeVO4The crystal particles are placed into a stirrer for dispersion according to the mass ratio of 1:2-4:1-2, the stirring speed is 2500-; then adding the nano-scale anatase titanium dioxide in a mass ratio of 1: 0.1 to 0.3 of coupling agent, continuously stirring for 20 to 30min, heating to 80 ℃ after stirring, and preserving heat for 12h to obtain the photocatalytic degradation composite particles.
5. The method for preparing photocatalytic degradation composite particles according to claim 4, wherein the method comprises the following steps: in step 3, the temperature of the muffle furnace is 550 ℃, the time of the calcination is 4h, and the temperature of the muffle furnace is gradually increased at the speed of 5 ℃/min.
6. The application of the photocatalytic degradation composite particles is characterized in that the dosage of the photocatalytic degradation composite particles is 0.1-0.15g/m3And the depth of the wastewater pond is less than 1 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010157853.1A CN111359621A (en) | 2020-03-09 | 2020-03-09 | Photocatalytic degradation composite particle and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010157853.1A CN111359621A (en) | 2020-03-09 | 2020-03-09 | Photocatalytic degradation composite particle and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111359621A true CN111359621A (en) | 2020-07-03 |
Family
ID=71201431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010157853.1A Pending CN111359621A (en) | 2020-03-09 | 2020-03-09 | Photocatalytic degradation composite particle and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111359621A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201960A (en) * | 2021-04-30 | 2021-08-03 | 北京依依星科技有限公司 | Photocatalytic paper and preparation method thereof |
| CN113667319A (en) * | 2021-09-14 | 2021-11-19 | 浙江晟祺实业有限公司 | Biodegradable material and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449996A (en) * | 2003-05-20 | 2003-10-22 | 吉林大学 | Process for preparing high-purity nano silicon dioxide from rice husk |
| CN103252225A (en) * | 2013-05-03 | 2013-08-21 | 江苏省交通规划设计院股份有限公司 | Photocatalytic degradation composite particle as well as preparation method and application thereof |
| CN104258836A (en) * | 2014-09-18 | 2015-01-07 | 安徽工程大学 | Titanium dioxide/silicon dioxide nanometer composite material and preparation method and application thereof |
| WO2016136374A1 (en) * | 2015-02-26 | 2016-09-01 | 国立研究開発法人科学技術振興機構 | Photocatalyst structure and photocell |
| CN106311258A (en) * | 2016-09-23 | 2017-01-11 | 上海应用技术大学 | Preparation method of ferric vanadate photocatalysts |
| CN108404896A (en) * | 2018-03-22 | 2018-08-17 | 江南大学 | A kind of photochemical catalyst of Liquidity limit dyestuff |
| CN108671930A (en) * | 2018-04-04 | 2018-10-19 | 芜湖职业技术学院 | The photocatalytic degradation method of organic dyestuff |
| CN108786829A (en) * | 2018-04-04 | 2018-11-13 | 芜湖职业技术学院 | Photochemical catalyst of doped nano titanium dioxide and preparation method thereof |
| CN108889289A (en) * | 2018-07-24 | 2018-11-27 | 华东师范大学 | A kind of titanium dioxide optical catalyst preparation and its application for receiving micron silicon Particles dispersed |
| CN110642256A (en) * | 2019-09-23 | 2020-01-03 | 崔建中 | Preparation process for refining silicon dioxide by using rice husk with high precision |
-
2020
- 2020-03-09 CN CN202010157853.1A patent/CN111359621A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449996A (en) * | 2003-05-20 | 2003-10-22 | 吉林大学 | Process for preparing high-purity nano silicon dioxide from rice husk |
| CN103252225A (en) * | 2013-05-03 | 2013-08-21 | 江苏省交通规划设计院股份有限公司 | Photocatalytic degradation composite particle as well as preparation method and application thereof |
| CN104258836A (en) * | 2014-09-18 | 2015-01-07 | 安徽工程大学 | Titanium dioxide/silicon dioxide nanometer composite material and preparation method and application thereof |
| WO2016136374A1 (en) * | 2015-02-26 | 2016-09-01 | 国立研究開発法人科学技術振興機構 | Photocatalyst structure and photocell |
| CN106311258A (en) * | 2016-09-23 | 2017-01-11 | 上海应用技术大学 | Preparation method of ferric vanadate photocatalysts |
| CN108404896A (en) * | 2018-03-22 | 2018-08-17 | 江南大学 | A kind of photochemical catalyst of Liquidity limit dyestuff |
| CN108671930A (en) * | 2018-04-04 | 2018-10-19 | 芜湖职业技术学院 | The photocatalytic degradation method of organic dyestuff |
| CN108786829A (en) * | 2018-04-04 | 2018-11-13 | 芜湖职业技术学院 | Photochemical catalyst of doped nano titanium dioxide and preparation method thereof |
| CN108889289A (en) * | 2018-07-24 | 2018-11-27 | 华东师范大学 | A kind of titanium dioxide optical catalyst preparation and its application for receiving micron silicon Particles dispersed |
| CN110642256A (en) * | 2019-09-23 | 2020-01-03 | 崔建中 | Preparation process for refining silicon dioxide by using rice husk with high precision |
Non-Patent Citations (6)
| Title |
|---|
| YULIN MIN ET AL.: ""Synthesis of novel visible light responding vanadate/TiO2 heterostructure photocatalysts for application of organic pollutants"", 《CHEMICAL ENGINEERING JOURNAL》 * |
| 丁文平: "《粮油副产品开发技术》", 31 October 2016, 湖北科学技术出版社 * |
| 刘巧玲等: "灰化条件对油菜秸秆灰分特性的影响", 《湖南农业大学学报(自然科学版)》 * |
| 刘正锋等: ""吸附剂负载TiO2光催化研究进展"", 《化学通报》 * |
| 王敏等: "以玉米秸秆为模板制备FeVO_4光催化剂并研究其光催化性能", 《沈阳理工大学学报》 * |
| 王程等: "石英表面自组装二氧化钛光催化材料", 《无机盐工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201960A (en) * | 2021-04-30 | 2021-08-03 | 北京依依星科技有限公司 | Photocatalytic paper and preparation method thereof |
| CN113667319A (en) * | 2021-09-14 | 2021-11-19 | 浙江晟祺实业有限公司 | Biodegradable material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111359621A (en) | Photocatalytic degradation composite particle and preparation method and application thereof | |
| JP2007091574A (en) | Manufacturing method of high activity anatase type titanium dioxide sol which uses metatitanic acid as precursor | |
| CN1176743C (en) | Nano titanium dioxide photocatalyst,prep. and use thereof | |
| CN105080526A (en) | Method for preparing titanium dioxide-diatom ooze composite material for indoor photocatalytic degradation of formaldehyde by biological template | |
| CN105582916B (en) | A kind of titanium dioxide is sequentially depositing the preparation method of the photochemical catalyst of nanogold and rhodium | |
| CN1513040A (en) | Photocatalytic coating material having photocatalytic activity and adsorption property and method for preparating same | |
| CN106582892A (en) | Nanometer TiO2 coating structure, preparation method and uses thereof | |
| CN109174141A (en) | A kind of preparation method of composite Nano catalysis material | |
| CN109225132A (en) | Charcoal base load silicon adsorbent and the preparation method and application thereof | |
| CN109126714B (en) | TiO 22/SiO2-banana peel biochar composite adsorption material and preparation method thereof | |
| CN109331817A (en) | It is a kind of for decomposing the catalysis material and preparation method of organic matter in air | |
| CN113083277A (en) | Preparation method and application of nano ZnO rich in oxygen vacancy for photocatalytic reduction of hexavalent uranium | |
| CN112206817A (en) | Photo-enzyme integrated catalyst and preparation method and application thereof | |
| US20210170385A1 (en) | Fabrication process for efficient visible light photocatalysts | |
| CN1686608A (en) | Hydrothermal crystallization preparation method of high activity ball shaped nano-crystal titanium dioxide powder photocatalyst | |
| CN111495434B (en) | Thermosensitive photocatalytic spray gel and preparation method thereof | |
| CN113522337A (en) | Preparation method and application method of titanium-based nano material for photocatalytic degradation of DON | |
| CN102698734B (en) | Amorphous tantalic acid photocatalyst for decomposing benzene pollutants and preparation method for amorphous tantalic acid photocatalyst | |
| CN110022972B (en) | Size selective nano mesoporous SiO2-TiO2Preparation method of composite photocatalytic material | |
| CN203620645U (en) | Structure of titanium dioxide-silicon dioxide photocatalytic thin film | |
| CN110433789A (en) | A method of photocatalysis biology carbon composite is prepared using Eichhornia crassipes accumulation nano zine oxide | |
| CN105669042A (en) | Novel multifunctional film | |
| CN108926995A (en) | A kind of visible-light response type nano Photocatalyst water solution | |
| CN1586202A (en) | Process for preparing compound inorganic germicide | |
| CN111167690B (en) | Preparation method of titanium dioxide photocatalytic coating and coating prepared by preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200703 |
|
| RJ01 | Rejection of invention patent application after publication |