CN105582942A - Visible-light-responding photocatalyst SrCu2Ge2O7 and preparation method thereof - Google Patents
Visible-light-responding photocatalyst SrCu2Ge2O7 and preparation method thereof Download PDFInfo
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- CN105582942A CN105582942A CN201510986815.6A CN201510986815A CN105582942A CN 105582942 A CN105582942 A CN 105582942A CN 201510986815 A CN201510986815 A CN 201510986815A CN 105582942 A CN105582942 A CN 105582942A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000011941 photocatalyst Substances 0.000 title abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims description 26
- 229910005988 Ge2O7 Inorganic materials 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 18
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 7
- QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims description 5
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 claims description 5
- 229910000018 strontium carbonate Inorganic materials 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000003595 spectral effect Effects 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 241000894006 Bacteria Species 0.000 abstract 1
- 239000002028 Biomass Substances 0.000 abstract 1
- 230000001699 photocatalysis Effects 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- 230000003292 diminished effect Effects 0.000 description 5
- 238000007146 photocatalysis Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 4
- 229940012189 methyl orange Drugs 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 239000003905 agrochemical Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000010532 solid phase synthesis reaction Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 229910002900 Bi2MoO6 Inorganic materials 0.000 description 1
- 229910002915 BiVO4 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910003334 KNbO3 Inorganic materials 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- VEUKJXRCHYAIAW-UHFFFAOYSA-N [Nb].[K] Chemical compound [Nb].[K] VEUKJXRCHYAIAW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001621 bismuth Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000035922 thirst Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 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
- 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
- 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
- B01J23/835—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 germanium, tin or lead
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a visible-light-responding photocatalyst SrCu2Ge2O7 with broadband and high efficiency and a preparation method of the visible-light-responding photocatalyst SrCu2Ge2O7. A chemical composition formula of the photocatalyst is SrCu2Ge2O7. The invention further discloses the preparation method of the material. The photocatalyst has the advantages of wide spectral response range, high light conversion efficiency, good stability and the like; the photocatalyst has functions of decomposing harmful chemical substances and organic biomass and killing bacteria under the irradiation of visible light; besides, the preparation method is simple, the synthesis temperature is low, the cost is low, and the photocatalyst and the preparation method are suitable for industrial production and application.
Description
Technical field
The present invention relates to a kind of visible light-responded photochemical catalyst SrCu2Ge2O7And preparation method thereof, belong to inorganic field of photocatalytic material.
Background technology
Along with socioeconomic development, people more and more pay close attention to for the energy and ecological environment, solve energy shortage and problem of environmental pollution and be realize sustainable development, improve people's living standard and safeguard national security in the urgent need to.
From phase late 1970s, people proposed to utilize in photochemical catalyst decomposition water and atmosphere in the organic matter such as agricultural chemicals and odorant, and scribble the application example such as self-cleaning of the surface of solids of photochemical catalyst. The principle of light-catalyzed reaction is that photochemical catalyst is after the photon having absorbed higher than its band-gap energy, hole and electronics are generated, these holes and electronics carry out respectively oxidation reaction and reduction reaction, reach the object of decomposing harmful chemical, organic-biological matter and sterilization. Photochemical catalyst has many kinds, and wherein most representative is titanium dioxide (TiO2), utilize titanium dioxide to decompose the organic matter such as agricultural chemicals and odorant in water and in atmosphere, but the band gap of titanium dioxide is 3.2eV, only under the ultraviolet irradiation shorter than 400nm, just can show activity, can only be indoor or have a local work of uviol lamp, almost can not utilize visible ray, this has limited the use of titanium dioxide optical catalyst greatly.
Consider the practicality of photochemical catalyst in decomposing harmful substances, utilizing sunshine is indispensable as light source. Irradiate near sunshine medium wavelength visible light intensity maximum 500nm to earth's surface, wavelength is that the energy of the visible region of 400nm ~ 750nm is approximately 43% of sunshine gross energy, so for efficient utilization, the R and D of bismuth series photocatalyst have obtained a series of great achievements, and bismuthous compound is as BiVO4、Bi2MoO6、Bi2Mo2O9、Bi2Mo3O12And Bi2WO4Be reported in and under visible ray, there is good absorption. A series of niobiums (tantalum) hydrochlorate photochemical catalyst is because the photocatalytic activity having compared with high is widely studied. For example, niobate photocatalyst Pb3Nb4O13、BiNbO4And Bi2MNbO7(M=Al, Ga, In, Y, rare earth element and Fe) etc. with niobium potassium compound oxide photocatalyst as KNbO3、KNb3O8、K4Nb6O17And K6Nb10.6O30Deng all having good photocatalysis performance, but its intrinsic photocatalytic effect is very weak or there is no an activity in visible-range.
Although photocatalysis research has been carried out the several years, the summary of experience drawing by great many of experiments to the exploration of visible light-responded photochemical catalyst with exploitation major part at present, in theory also cannot be from the crystal structure of compound, composition, in the physicochemical properties such as molecular weight, predict its photocatalysis performance, therefore at present report to have visible light-responded photochemical catalyst kind still very limited, and it is low to exist light conversion efficiency, synthetic difficulty, the problems such as poor stability and spectral response range are narrow, research and develop that new preparation method is simple and to have the visible light-responded high efficiency photocatalyst of wideband be that this area scientific and technical personnel thirst for solving but being difficult to all the time the difficult problem succeeding always, this has limited extensive use and the development of photochemical catalyst to a great extent. we are to consisting of SrCu2Ge2O7、BaCu2Ge2O7And CaCu2Ge2O7Sample carried out Photocatalytic Performance Study. Found that SrCu2Ge2O7Band gap width is 2.60eV, has excellent visible light-responded photocatalysis performance; BaCu2Ge2O7And CaCu2Ge2O7For insulator, under ultraviolet irradiation, do not show activity yet.
Summary of the invention
The object of this invention is to provide a kind of visible light-responded photochemical catalyst SrCu that has2Ge2O7And preparation method thereof.
The chemical constitution formula with visible light-responded photochemical catalyst the present invention relates to is: SrCu2Ge2O7。
Preparation method's concrete steps of above-mentioned visible light-responded photochemical catalyst are:
(1) by 99.9% analytically pure chemical raw material SrCO3, CuO and GeO2Powder press SrCu2Ge2O7Composition weigh batching.
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) being mixed is 700 ~ 750 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverized average diameter of particles is diminished by ball mill, lower than 2 μ m, obtains SrCu2Ge2O7Powder.
Advantage of the present invention: SrCu2Ge2O7The visible light-responded wide frequency range of photochemical catalyst, the high and good stability of light conversion efficiency has the effect of decomposing harmful chemical, organic-biological matter and sterilization under radiation of visible light; Preparation method is simple in addition, synthesis temperature is low, and cost is low, is applicable to industrial production and application.
Detailed description of the invention
To be specifically described the present invention below:
1, the composite oxides in order to obtain using in the present invention, first use solid-phase synthesis to prepare powder, various oxides or carbonate as raw material measured than mixing according to target constitutional chemistry, more synthetic in air atmosphere under normal pressure.
2, in order effectively to utilize light, the size of the photochemical catalyst in the present invention is preferably in micron level, or even nano particle, and specific area is larger. The oxide powder of preparing with solid-phase synthesis, its particle is compared with large and surface area is less, but can particle diameter be diminished by ball mill pulverizing means.
3, photocatalysis experiment of the present invention is using methyl orange as simulation organic pollution, and its concentration is 20mg/L; Photochemical catalyst SrCu2Ge2O7Addition be 1g/L; Light source uses the xenon lamp of 300W, and the vessel that reactive tank uses pyrex to make, obtain by wave filter the light that wavelength is greater than 420nm, then light irradiation catalyst; Catalysis time is set as 60 minutes.
Embodiment 1:
(1) will analyze pure chemistry raw material SrCO3, CuO and GeO2Powder press SrCu2Ge2O7Composition weigh batching.
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) being mixed is 700 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverized average diameter of particles is diminished by ball mill, lower than 2 μ m, obtains SrCu2Ge2O7Powder.
Prepared photochemical catalyst, is greater than at wavelength under the radiation of visible light of 420nm, methyl orange clearance is reached to 97.3% in 60 minutes.
Embodiment 2:
(1) will analyze pure chemistry raw material SrCO3, CuO and GeO2Powder press SrCu2Ge2O7Composition weigh batching.
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) being mixed is 720 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverized average diameter of particles is diminished by ball mill, lower than 2 μ m, obtains SrCu2Ge2O7Powder.
Prepared photochemical catalyst, is greater than at wavelength under the radiation of visible light of 420nm, methyl orange clearance is reached to 98.7% in 60 minutes.
Embodiment 3:
(1) will analyze pure chemistry raw material SrCO3, CuO and GeO2Powder press SrCu2Ge2O7Composition weigh batching.
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves.
(3) powder step (2) being mixed is 750 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverized average diameter of particles is diminished by ball mill, lower than 2 μ m, obtains SrCu2Ge2O7Powder.
Prepared photochemical catalyst, is greater than at wavelength under the radiation of visible light of 420nm, and 60min reaches 98.1% to methyl orange clearance.
The present invention is never limited to above embodiment. Bound, the interval value of each temperature can realize the present invention, do not enumerate embodiment at this.
The made photocatalyst powder of above inventive embodiments can be carried on multiple matrix surface. Matrix can be glass, pottery, active carbon or quartz sand etc., and photochemical catalyst can be carried on matrix surface with the form of film.
Claims (1)
1. a visible light-responded photochemical catalyst, the chemical constitution formula that it is characterized in that described photochemical catalyst is SrCu2Ge2O7；
Preparation method's concrete steps of described photochemical catalyst are:
(1) will analyze pure chemistry raw material SrCO3, CuO and GeO2Powder press SrCu2Ge2O7Composition weigh batching;
(2) raw material step (1) being prepared mixes, and puts into ball grinder, adds zirconia ball and absolute ethyl alcohol, and ball milling 8 hours, is mixed and finely ground, and takes out and dries, and crosses 200 mesh sieves;
(3) powder step (2) being mixed is 700 ~ 750 DEG C of pre-burnings, and is incubated 6 hours, naturally cools to room temperature, then pulverized and made average diameter of particles lower than 2 μ m by ball mill, obtains SrCu2Ge2O7Powder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510986815.6A CN105582942A (en) | 2015-12-26 | 2015-12-26 | Visible-light-responding photocatalyst SrCu2Ge2O7 and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510986815.6A CN105582942A (en) | 2015-12-26 | 2015-12-26 | Visible-light-responding photocatalyst SrCu2Ge2O7 and preparation method thereof |
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| CN105582942A true CN105582942A (en) | 2016-05-18 |
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| CN201510986815.6A Pending CN105582942A (en) | 2015-12-26 | 2015-12-26 | Visible-light-responding photocatalyst SrCu2Ge2O7 and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040223A (en) * | 2016-07-19 | 2016-10-26 | 桂林理工大学 | Visible light responded photocatalyst Li2SrMgGeO5 and preparation method thereof |
| CN117510185A (en) * | 2023-11-16 | 2024-02-06 | 山东兴本生物科技有限公司 | Low-temperature sintered LTCC material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068954A (en) * | 2009-11-24 | 2011-05-25 | 中国科学院物理研究所 | Method and device for photocatalytic reaction |
| CN103316686A (en) * | 2013-06-24 | 2013-09-25 | 桂林理工大学 | Visible-light-responded photocatalyst SrCu2V2O8 and preparation method thereof |
-
2015
- 2015-12-26 CN CN201510986815.6A patent/CN105582942A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068954A (en) * | 2009-11-24 | 2011-05-25 | 中国科学院物理研究所 | Method and device for photocatalytic reaction |
| CN103316686A (en) * | 2013-06-24 | 2013-09-25 | 桂林理工大学 | Visible-light-responded photocatalyst SrCu2V2O8 and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040223A (en) * | 2016-07-19 | 2016-10-26 | 桂林理工大学 | Visible light responded photocatalyst Li2SrMgGeO5 and preparation method thereof |
| CN117510185A (en) * | 2023-11-16 | 2024-02-06 | 山东兴本生物科技有限公司 | Low-temperature sintered LTCC material |
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