CN107876036A - A kind of CQDs/TiO2The preparation method of sunlight photocatalysis agent - Google Patents
A kind of CQDs/TiO2The preparation method of sunlight photocatalysis agent Download PDFInfo
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- CN107876036A CN107876036A CN201710829833.2A CN201710829833A CN107876036A CN 107876036 A CN107876036 A CN 107876036A CN 201710829833 A CN201710829833 A CN 201710829833A CN 107876036 A CN107876036 A CN 107876036A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 19
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 52
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 26
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 7
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 7
- 235000005822 corn Nutrition 0.000 claims abstract description 7
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 230000004913 activation Effects 0.000 claims abstract description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- REDUQXCPUSNJOL-UHFFFAOYSA-N C(C1=CC=CC=C1)NC(CN(C(C1=CC=C(C=C1)C(C)C)=O)CC1=CC=C(C=C1)C(NO)=O)=O Chemical compound C(C1=CC=CC=C1)NC(CN(C(C1=CC=C(C=C1)C(C)C)=O)CC1=CC=C(C=C1)C(NO)=O)=O REDUQXCPUSNJOL-UHFFFAOYSA-N 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000005119 centrifugation Methods 0.000 claims description 2
- 235000019441 ethanol Nutrition 0.000 claims description 2
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 241000209149 Zea Species 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims 1
- 229910001948 sodium oxide Inorganic materials 0.000 claims 1
- 238000000527 sonication Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 18
- 238000006731 degradation reaction Methods 0.000 abstract description 18
- 230000003197 catalytic effect Effects 0.000 abstract description 14
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract description 11
- 240000008042 Zea mays Species 0.000 abstract description 5
- 239000011941 photocatalyst Substances 0.000 abstract description 5
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 abstract description 4
- 229940043267 rhodamine b Drugs 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000502 dialysis Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- -1 compound titanium dioxide Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
-
- 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
-
- 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
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a kind of CQDs/TiO2The preparation method of visible-light photocatalyst, the present invention solve titanium dioxide under sunshine the defects of catalytic degradation, the CQDs/TiO prepared by introducing carbon quantum dot (CQDs)2Fast and effectively degraded that can be under sunshine to organic pollution, so as to solve TiO2Can only under ultraviolet light catalytic degradation the drawbacks of.Method：Phosphoric acid activation method corn stalk active carbon is first ultrasonically treated with sodium hydroxide solution, rear move into hydrothermal reaction kettle carries out Hydrothermal Synthesiss under certain condition, and neutralized, dialysis obtains carbon quantum dot solution；Take appropriate titanium dioxide (particle diameter 40nm) to be dispersed in absolute ethyl alcohol, add carbon quantum dot solution, stirring is compound, centrifuges, washs, is dried to obtain CQDs/TiO2Sunlight photocatalysis agent.The CQDs/TiO that the present invention obtains2With under efficient sunshine the characteristics of photocatalytic degradation, degradation rate is 99.5% when under sunshine irradiation to rhodamine B photocatalytic degradation 105min, and degradation rate is 99.9% during catalytic degradation 120min, and basic degraded is complete.
Description
Technical field
The present invention relates to a kind of CQDs/TiO2The preparation method of sunlight photocatalysis agent.
Background technology
As China's industry and the development of society, the aggravation of environmental pollution especially water environment pollution cause some water resources
Originally there is contamination type or water quality type water shortage in abundant area.Photocatalysis oxidation technique have simple to operate, reaction condition it is gentle,
The advantages that energy consumption is low and secondary pollution is few, thus cause extensive concern in field for the treatment of of water pollution.TiO2Belong to a kind of n-type partly to lead
Body material, due to TiO2Surface impurity and lattice defect are influenceed, and organic pollutant degradation can be by it in UV wavelength range
Small molecule H2O and CO2.Because of TiO2In catalytic degradation organic matter, it is necessary to which ultraviolet irradiation could activate, so as to cause to the sun
Energy spectrum utilization factor is very low, and TiO2As a major defect of photochemical catalyst, its application is limited to.Therefore, in reality
Border is in use, improve TiO2Photocatalytic degradation application under sunshine irradiation is very important.Fluorescent carbon quantum dot conduct
A kind of new carbon material, have particle diameter small, good water solubility, chemical inertness is high, is easy to functionalization, fast light, low toxicity, bio-compatible
Property it is good the advantages that, carbon quantum dot especially with up-conversion fluorescence property is used to prepare composite photo-catalyst, can effectively carry
Catalytic degradation ability of the high photochemical catalyst under solar irradiation.Therefore, by the fluorescent carbon quantum dot (CQDs) and semiconductor of preparation
Photochemical catalyst TiO2Carry out compound, raising TiO2The efficiency of photocatalysis degradation organic contaminant under sunshine.
The content of the invention
The invention aims to improve TiO2The ability of photocatalysis degradation organic contaminant under sunshine, there is provided
One kind prepares CQDs/TiO2The preparation method of sunlight photocatalysis agent.
(1) preparation of carbon quantum dot solution：The corn stalk active carbon prepared with phosphoric acid activation method is ground, weighs 0.5g
Powdered Activated Carbon, it is mixed with 40mL 5~10mol/L NaOH solution, be ultrasonically treated 30min obtain black suspension
Liquid, move into hydrothermal synthesis reaction kettle, be heated to 150~200 DEG C and 10~20h of constant temperature.It is super using 0.45 μm after standing cools
Membrane filtration removes insoluble matter and obtains faint yellow settled solution, after with concentrated hydrochloric acid adjust solution to neutrality.Solution is loaded and retained
In the bag filter of molecular weight 100~8000, persistently dialyse three days, obtain the carbon quantum dot aqueous solution in bag.
(2)CQDs/TiO2Preparation：Weigh 0.2g titanium dioxide (particle diameter 40nm) and add 50mL absolute ethyl alcohols, surpass
Sound disperses 30min, adds carbon quantum dot solution prepared by 10~50mL, stirs compound 2h.Centrifugation, water washing, produced after drying
To CQDs/TiO2Sunlight catalytic agent.
The present invention has the following advantages that compared with prior art：
1st, corn stalk active carbon prepared by preferred feedstock phosphoric acid activation method is carbon quantum dot prepared by raw material, beneficial to corn
Effective utilization of stalk, and abundance, cost are low.
2nd, the carbon quantum dot for preparing of the present invention can direct hydrothermal synthesis, compound with titanium dioxide (particle diameter 40nm) can be direct
It is mixed to get CQDs/TiO2Sunlight catalytic agent.
3rd, the present invention improves the efficiency of photocatalytic degradation organic pollutant of the titanium dioxide under sunshine, widens
The sunshine illumination range of optically catalytic TiO 2 degradable organic pollutant.
3、CQDs/TiO2There is high catalytic degradation performance under sunlight catalytic, to rhodamine B light under sunshine irradiation
Degradation rate is 99.8% when degradation rate is 99.5%, 120min during catalytic degradation 105min, and basic degraded is complete.
4th, the CQDs/TiO prepared from photocatalytic degradation curve map, the present invention2Catalytic degradation organic pollution has
Very high sunshine selectivity.The utilization of photocatalysis degradation organic contaminant of the titanium dioxide under sunshine is realized, is reduced
Pollution, the economic benefit for improving industry.
Brief description of the drawings
Fig. 1 is that the ultraviolet spectrogram of carbon quantum dot solution and ultraviolet (254nm) lamp show blueness according to lower solution；Jumped with reference to electronics
Rule is moved, finds there is strong ultraviolet absorption peak in 200nm, there is faint ultraviolet absorption peak between 250-330nm, and 190nm's
Shortwave direction spectral line is to upwardly extend, and is shown, carbon quantum dot there may be π → π *, n → π * and n → σ * electron transitions.
Fig. 2 is high power transmission electron microscope (HRTEM) photo of carbon quantum dot, and carbon quantum dot is nano spherical particle shape, particle diameter
It is concentrated mainly between 2-3nm, good dispersion, soilless sticking phenomenon.
Fig. 3 is the CQDs/TiO under sunshine and ultra violet lamp2Photochemical catalyst and titanium dioxide (particle diameter 40nm) are each
100mg photocatalytic degradation 200mL concentration is the photocatalytic degradation curve map of 10mg/L rhodamine B solution.Do not shared the same light at three kinds
Under the irradiation of source, CQDs/TiO2Photocatalytic degradation capability of the composite photo-catalyst under sunshine is substantially better than titanium dioxide (particle diameter
40nm), ultraviolet catalytic ability is relatively low；With the lengthening of catalysis time, the CQDs/TiO in 90min2Composite photo-catalyst
Photocatalytic activity under sunshine and uviol lamp is respectively 97.52%, 56.86%；The light of titanium dioxide (particle diameter 40nm)
Catalysis degradation modulus are respectively 83.8%, 76.87%.The not compound titanium dioxide (particle diameter 40nm) it can be seen from data analysis
Catalytic effect under its ultraviolet light is more excellent, and composite photo-catalyst improves TiO due to the introducing of carbon quantum dot2In sunshine
Under photocatalytic degradation capability, correspondingly reduce the photocatalytic degradation capability under its ultraviolet light.CQDs/TiO2Photochemical catalyst exists
Degradation rate is 99.9% when photocatalytic activity during 105min under sunshine irradiation is 99.5%, 120min, has been degraded substantially
Entirely, further demonstrate that the introducing of carbon quantum dot enhances TiO2Photocatalytic activity under sunshine.
Fig. 4 is to irradiate CQDs/TiO in sunshine2Photocatalytic degradation rhodamine B solution by 30min, 60min, 90min,
Color change situation when 105min, 120min.
Embodiment
Embodiment one：(1) preparation of carbon quantum dot solution：0.5g corn stalk active carbons, add concentration be 5~
10moL/L sodium hydroxide solution 40mL, it is ultrasonically treated 30min, the hydro-thermal reaction 14h at 150 DEG C, 0.45 μm of milipore filter mistake
Filter, is obtained settled solution, is persistently dialysed three days using molecular cut off 8000, and it is molten to obtain the fluorescent carbon quantum dot of tool in bag
Liquid.
(2)CQDs/TiO2Preparation：The titanium dioxide (particle diameter 40nm) for weighing 0.2g is dispersed in 50mL absolute ethyl alcohol
30min is ultrasonically treated, 30mL carbon quantum dot solution is added, stirs compound 2h.Centrifuge and be washed with water, obtained after drying
CQDs/TiO2Sunlight catalytic agent.
CQDs/TiO prepared by present embodiment2Photocatalytic activity when sunshine irradiates 120min reaches as high as
98.1%.
Embodiment two：Present embodiment is unlike embodiment one：It is 5moL/L's to add concentration
Sodium hydroxide solution, hydrothermal temperature are 150~200 DEG C.It is other identical with embodiment one.
CQDs/TiO prepared by present embodiment2Photocatalytic activity when sunshine irradiates 120min reaches as high as
98.4%.
Embodiment three：Present embodiment is unlike embodiment two：Hydrothermal temperature is 170 DEG C, water
Hot time 12-20h.It is other identical with embodiment two.
CQDs/TiO prepared by present embodiment2Photocatalytic activity when sunshine irradiates 120min reaches as high as
99.0%.
Embodiment four：Present embodiment is unlike embodiment three：The hydro-thermal time is 12h, is used
Molecular cut off 100~8000 is dialysed, other identical with embodiment three.
CQDs/TiO prepared by present embodiment2Photocatalytic activity when sunshine irradiates 120min reaches as high as
99.3%.
Embodiment five：Present embodiment is unlike embodiment four：Use molecular cut off 3500
Dialysed, CQDs/TiO2It is 0.2g that titanium dioxide (particle diameter 40nm) and the ratio of carbon quantum dot solution are added in preparation:(10
~50) mL.It is other identical with embodiment four.
CQDs/TiO prepared by present embodiment2Photocatalytic activity when sunshine irradiates 120min reaches as high as
99.9%.
Claims (8)
- A kind of 1. CQDs/TiO2The preparation method of sunlight photocatalysis agent, it is characterised in that it is followed the steps below：(1) preparation of carbon quantum dot solution：The corn stalk active carbon prepared with phosphoric acid activation method is ground, weighs 0.5g powder Last activated carbon, it is mixed with 40mL 5~10mol/L NaOH solution, be ultrasonically treated 30min and obtain black suspension, move Enter in hydrothermal synthesis reaction kettle, be heated to 150~200 DEG C and 10~20h of constant temperature.After standing cools, 0.45 μm of milipore filter is used Be filtered to remove insoluble matter and obtain faint yellow settled solution, after with concentrated hydrochloric acid adjust solution to neutrality.Solution is loaded into retention molecule In the bag filter of amount 100~8000, persistently dialyse three days, obtain the carbon quantum dot aqueous solution in bag.(2)CQDs/TiO2Preparation：Weigh 0.2g titanium dioxide (particle diameter 40nm) and add 50mL absolute ethyl alcohols, ultrasonic disperse 30min, carbon quantum dot solution prepared by 10~50mL is added, stirs compound 2h.Centrifugation, water washing, CQDs/ is obtained after drying TiO2Visible light catalyst.
- A kind of 2. CQDs/TiO according to claim 12The preparation method of sunlight photocatalysis agent, it is characterised in that raw material The corn stalk active carbon prepared for phosphoric acid activation method.
- A kind of 3. CQDs/TiO according to claims 12The preparation method of sunlight photocatalysis agent, it is characterised in that hydrogen The concentration of sodium oxide molybdena is 5~10moL/L.
- A kind of 4. CQDs/TiO according to claims 12The preparation method of sunlight photocatalysis agent, it is characterised in that living The solid-liquid ratio of property carbon powder and sodium hydroxide is 0.5g:40mL, sonication treatment time 30min.
- A kind of 5. CQDs/TiO according to claims 12The preparation method of sunlight photocatalysis agent, it is characterised in that system The hydrothermal temperature of standby carbon quantum dot solution is 150~200 DEG C.
- A kind of 6. CQDs/TiO according to claims 12The preparation method of sunlight photocatalysis agent, it is characterised in that system The Hydrothermal Synthesiss time of standby carbon quantum dot solution is 10~20h.
- A kind of 7. CQDs/TiO according to claims 12The preparation method of sunlight photocatalysis agent, it is characterised in that make Dialysed to obtain interior liquid with the bag filter of molecular cut off 100~8000.
- A kind of 8. CQDs/TiO according to claims 12The preparation method of sunlight photocatalysis agent, it is characterised in that two The solid-liquid ratio of titanium oxide (particle diameter 40nm) and carbon quantum dot solution is 0.2g:(10~50) mL, stirs compound 2h.
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Cited By (10)
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| CN109722244A (en) * | 2018-12-12 | 2019-05-07 | 东北林业大学 | It is a kind of novel with visible light-responded preparation of blue fluorescent powder |
| CN109731565A (en) * | 2018-12-29 | 2019-05-10 | 富思特新材料科技发展股份有限公司 | A kind of nano titanic oxide sol with visible light activity |
| CN110052242A (en) * | 2019-04-26 | 2019-07-26 | 黑龙江大学 | A kind of load carbon quantum dot/W18O49The preparation method of the renewable porous carbon adsorbent of photocatalysis |
| CN110404524A (en) * | 2019-07-05 | 2019-11-05 | 武汉科技大学 | Carbon quantum dot/titanium dioxide composite photocatalyst preparation method and applications |
| CN110586060A (en) * | 2019-09-25 | 2019-12-20 | 江南大学 | Composite photocatalyst with oxidation-reduction performance and preparation method thereof |
| CN110606526A (en) * | 2019-08-28 | 2019-12-24 | 同济大学 | Three-dimensional TiO with efficient visible light response2Photoelectrode, construction and application thereof |
| CN110918095A (en) * | 2019-11-12 | 2020-03-27 | 华南师范大学 | Carbon/titanium dioxide/noble metal composite material, photocatalyst and preparation method thereof |
| CN111715213A (en) * | 2019-03-20 | 2020-09-29 | 东北林业大学 | CQDs/Mn (0H) prepared from coreopsis2And applications thereof |
| CN112048297A (en) * | 2020-09-10 | 2020-12-08 | 四川大学 | Carbon quantum dot, carbon quantum dot-titanium dioxide composite material and preparation method thereof |
| CN114455882A (en) * | 2022-01-05 | 2022-05-10 | 江苏奥莱特新材料股份有限公司 | Preparation method and application of multifunctional nano composite material for concrete |
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| CN109722244A (en) * | 2018-12-12 | 2019-05-07 | 东北林业大学 | It is a kind of novel with visible light-responded preparation of blue fluorescent powder |
| CN109731565A (en) * | 2018-12-29 | 2019-05-10 | 富思特新材料科技发展股份有限公司 | A kind of nano titanic oxide sol with visible light activity |
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| CN110586060A (en) * | 2019-09-25 | 2019-12-20 | 江南大学 | Composite photocatalyst with oxidation-reduction performance and preparation method thereof |
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| CN112048297A (en) * | 2020-09-10 | 2020-12-08 | 四川大学 | Carbon quantum dot, carbon quantum dot-titanium dioxide composite material and preparation method thereof |
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