CN101301614A - Method for preparing visible light responding tungsten-containing semi-conductor photocatalysis material - Google Patents

Method for preparing visible light responding tungsten-containing semi-conductor photocatalysis material Download PDF

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CN101301614A
CN101301614A CNA2008100482846A CN200810048284A CN101301614A CN 101301614 A CN101301614 A CN 101301614A CN A2008100482846 A CNA2008100482846 A CN A2008100482846A CN 200810048284 A CN200810048284 A CN 200810048284A CN 101301614 A CN101301614 A CN 101301614A
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contain
compound
visible light
tungsten
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CN101301614B (en
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夏文兵
戴璐
黄进
王斌
姜壬山
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Wuhan University of Technology WUT
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Abstract

The invention relates to a preparation method of semiconductor photocatalysis material containing tungsten responsive to visible light, which is characterized by comprising: 1) selecting materials, according to mol ratio of M, Fe, Ba, W respectively in compound containing M, compound containing Fe, compound containing Ba, compound containing W which is 1:1:1:1; 2) mixing the compound containing M, the compound containing Fe, the compound containing Ba, the compound containing W evenly, grinding into powders in a crucible, then slowly heating up to 500 DEG C and preburning for 1-24 hours at constant temperature in a muffle furnace, taking out after cooling, then regrinding and heating up to 900-1200 DEG C for 1-48 hours at constant temperature in the muffle furnace, grinding after cooling; so the semiconductor photocatalysis material containing tungsten responsive to visible light is obtained. The invention has low cost and good absorption under visible light irradiation, the method is simple and easy to perform.

Description

Preparation method to visible light-responded tungsten-containing semi-conductor photocatalysis material
Technical field
Field of the present invention belongs to field of new, also belongs to the environment-friendly materials field; Be specifically related to preparation method to visible light-responded tungsten-containing semi-conductor photocatalysis material.
Background technology
Utilize the photocatalysis technology decomposing organic matter, it is a kind of " green technology " that decomposition water prepares hydrogen, become the focus of various countries' industrial circle and academia research, catalysis material can effectively be removed harmful substances in air and kill bacteria under ultraviolet and visible light radiation, water can also be decomposed at normal temperatures to obtain hydrogen.Be TiO at present with stable chemical performance 2Be main research object, but its large-scale commercial Application is subjected to serious restriction, the main problem that exists is, because TiO 2Band structure determined it can only absorb ultraviolet portion in the sunshine, can not absorb visible light: the sunshine that shines the face of land, near visible wavelength 500nm, reach maximum radiant intensity, the energy of the visible-range of wavelength 400-750nm accounts for 43% of whole solar energies, and therefore the following ultraviolet ray of wavelength 400nm less than 5% also uses TiO 2Efficient too low.
For the more effective sunshine power spectrum of extensively utilizing, development and use in the solar spectral to visible light-responded catalysis material, be the key that solves a current photocatalysis technology difficult problem.
Summary of the invention
The object of the present invention is to provide a kind of preparation method to visible light-responded tungsten-containing semi-conductor photocatalysis material with low cost, this tungsten-containing semi-conductor photocatalysis material has good absorption to visible light.
To achieve these goals, technical scheme of the present invention is: to the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it is characterized in that it comprises the steps:
1) choosing of raw material: in the compound that contains M, contain Fe compound, contain Ba compound, contain the mol ratio of M, Fe in the compound of W, Ba, W=1: 1: 1: 1 ratio, choose compound, the compound that contains Fe, the compound that contains Ba that contains M, the compound that contains W, standby;
The compound of the described M of containing is oxide, the hydroxide that contains M, the halide that contains M, the carbonate that contains M, the nitrate that contains M that contain M, contain the sulfate of M or contain the acetate of M, and wherein M is Li, Na, K, Rb or Cs; The compound of the described Fe of containing is oxide, the hydroxide that contains Fe, the halide that contains Fe, the carbonate that contains Fe that contain Fe, contain the nitrate of Fe or contain the sulfate of Fe; The compound of the described Ba of containing is oxide, the hydroxide that contains Ba, the halide that contains Ba that contain Ba, contain the carbonate of Ba or contain the nitrate of Ba; The compound of the described W of containing is oxide, the hydroxide that contains W, the halide that contains W, the carbonate that contains W, the nitrate that contains W that contain W, contain the sulfate of W or contain the tungstates of W;
2) will contain the compound of M, the compound that contains Fe, the compound that contains the compound of Ba and contain W puts into mortar and mixes and grind to form the micron level powder, pack in the crucible, put into Muffle furnace then and slowly be warmed up to 500 ℃ and constant temperature pre-burning 1～24 hour, heating rate is 1～50 ℃/minute, and take out the cooling back; And then grind, powder diameter is controlled at micron level, powder after levigate is put into Muffle furnace, in Muffle furnace, be warmed up to 900～1200 ℃ of constant temperature 1～48 hour again, heating rate is 1～50 ℃/minute, take out grinding after naturally cooling to room temperature, obtain visible light-responded tungsten-containing semi-conductor photocatalysis material { BaMFeWO 6(M=Li, Na, K, Rb or Cs) }.
Application of the present invention: be applied to sunshine is carried out full spectral absorption, or be applied under radiation of visible light, can effectively remove harmful substances in air and sterilization, or be applied to utilize solar hydrogen making, or be applied to as photoelectric conversion material.
1) BaMFeWO of the present invention 6(M=Li, Na, K, Rb or Cs) can carry out full spectral absorption to sunshine, especially can absorb the visible light in the sunshine, at λ 〉=400nm place more intense absorption arranged, and can improve the utilization ratio to sunshine.(1) main application is to utilize sunshine decomposition water and H2S to make hydrogen under the normal temperature.(2) penetrate down BaMFeWO of the present invention in the illumination of 200-1100nm 6Utilize the light water splitting device with water and H at normal temperatures 2S resolves into hydrogen.(3) purposes be the 200-1100nm wavelength light according under can degradation water organic pollution such as dyestuff, phenol etc.
2) this catalysis material BaMFeWO 6(M=Li, Na, K, Rb, Cs) can effectively remove harmful substances in air and sterilization under radiation of visible light, H is resolved in airborne VOCs (benzene series thing, formaldehyde, nitrogen oxide etc.) pollutant direct oxidation 2O, CO 2Or other nontoxic materials.
3) this catalysis material BaMFeWO 6(M=Li, Na, K, Rb, Cs) can be as photoelectric conversion material; Product form as opto-electronic conversion mainly contains: solar energy photocell board, the patch block of solar energy photoelectric conversion wall, solar energy switching film, solar energy conversion watt or the like.
The present invention is based on the basic principle of conductor photocatalysis oxidation, feature based on the tungsten oxygen octahedra, based on potassium transfer function to oxygen in redox reaction, based on doping Ba, Fe raising to the catalysis material effect, a kind of novel photocatalysis material of preparation.This catalysis material can not only absorb the ultraviolet ray in the sunshine, can also effectively absorb visible light and near infrared light in the sunshine.By using such catalysis material, under visible light radiation, decompose virulent organic pollution in the sewage, thereby a kind of method that contains the green safety of organic matter wastewater treatment purification is provided; Can effectively decompose harmful chemical substance such as formaldehyde, nitrogen oxide in the air, kill airborne bacterium; Can also utilize this type of catalysis material at normal temperatures decomposition water make a considerable number of hydrogen, to alleviate because oil equal energy source price generally appreciates and the energy pressure that brings recently.
Compared with prior art, the present invention has following advantage:
(1) catalysis material preparation method of the present invention is simple, and raw material are common compound, and is with low cost nor be subjected to the restriction of region.
(2) because BaMFeWO 6(M=Li, Na, K, Rb or Cs) is can band gap very low, and good absorption is arranged under radiation of visible light, enlarges the scope of utilizing of solar energy, has solved the low problem of solar energy utilization ratio.
(3) catalysis scope is wide: to the waste water that contains organic pollution tangible catalytic degradation effect is arranged all from the gas that contains organic pollution, have capacity of decomposition to produce green energy hydrogen to the water under the normal temperature.
(4) catalysis material synthesis condition wide ranges of the present invention does not need strict control raw material proportioning, and calcination temperature range is also very wide.
(5) technology is simple, is easy to large-scale industrialization and promotes.
Description of drawings
Fig. 1 is the BaMFeWO of embodiment 1 6X-ray diffraction spectrogram (being XRD spectra), powder crystal is resolved BaKFeWO 6Space group is P2 1/ m, lattice parameter: a=11.9089
Figure A20081004828400041
, b=6.4167
Figure A20081004828400042
, c=5.9038 , β=95.33 °.
Fig. 2. be the BaMFeWO of embodiment 1 6The ultraviolet-visible spectrogram that diffuses, collection of illustrative plates shows that this catalysis material has full spectrum absorbability, has the excellent absorption performance to solar visible light.
The specific embodiment
For a better understanding of the present invention, further illustrate content of the present invention, but content of the present invention not only is confined to the following examples below in conjunction with embodiment.
Embodiment 1:
To the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it comprises the steps:
1) choosing of raw material:
Adopt the synthetic BaMFeWO of high temperature solid state reaction 6, (M is an example with the K element)
Raw materials used (analyzing pure) K 2CO 31.38g,
(purity is more than 99.5%) WO 34.64g,
Analyze pure BaCO 33.95g,
Analyze pure FeCl 36H 2O 5.41g,
Its chemical equation:
K 2CO 3+2WO 3+2BaCO 3+2FeCl 3·6H 2O→2BaKFeWO 6+3CO 2↑+3H 2O↑+6HCl↑，
K 2CO 3, FeCl 36H 2O is slightly excessive.
2) with above-mentioned raw materials by above-mentioned dosage weighing good after, put into the mortar mixing and carefully grind to form the micron level powder, pack into then in φ 10mm * 20mm platinum crucible, in Muffle furnace, slowly be warmed up to 500 ℃ and constant temperature pre-burning 2 hours, heating rate is 1 ℃/minute, take out the cooling back, and grind once more evenly, powder diameter is controlled at micron level, 900 ℃ of following sintering 20 hours, heating rate was 1 ℃/minute then, and grind the cooling back, make the particle diameter of product be approximately 1 μ m, obtain Powdered BaKFeWO 6, and doing ultraviolet-visible light analysis (shown in Figure 2), XRD detects (shown in Figure 1).
Embodiment 2:
To the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it comprises the steps:
1) choosing of raw material:
Adopt the synthetic BaMFeWO of high temperature solid state reaction 6(M is an example with the K element)
Raw materials used (analyzing pure) KNO 31.01g,
(purity is more than 99.5%) WO 32.32g,
Analyze pure BaCO 31.97g,
Analyze pure FeCl 36H 2O 2.70g,
Its chemical equation:
KNO 3+WO 3+BaCO 3+FeCl 3·6H 2O→BaKFeWO 6+CO 2↑+6H 2O↑+3Cl 2↑+NO↑，
FeCl 36H 2O is slightly excessive.
2) with above-mentioned raw materials by above-mentioned dosage weighing good after, put into mortar and mix and carefully grind to form the micron level powder, in the φ 10mm * 20mm platinum crucible of packing into then, in Muffle furnace, slowly be warmed up to 500 ℃ and constant temperature pre-burning 2 hours, heating rate is 5 ℃/minute, and take out the cooling back; And grind once more evenly, powder diameter is controlled at micron level, and 900 ℃ of following sintering 20 hours, heating rate was 5 ℃/minute then, and grind the cooling back, makes the particle diameter of product be approximately 1 μ m, obtains Powdered BaKFeWO 6, and doing the ultraviolet-visible light analysis, XRD detects.
Embodiment 3:
To the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it comprises the steps:
1) choosing of raw material:
Adopt the synthetic BaMFeWO of high temperature solid state reaction 6(M is an example with the K element)
Raw materials used (analyzing pure) K 2SO 41.74g,
(purity is more than 99.5%) WO 34.64g,
Analyze pure BaCl 24.16g,
Analyze pure FeCl 36H 2O 5.41g,
Its chemical equation:
K 2SO 4+2WO 3+2BaCl 2+2FeCl 3·6H 2O→2BaKFeWO 6+SO3↑+H 2O↑+10HCl↑，
FeCl 36H 2O is slightly excessive.
2) with above-mentioned raw materials by above-mentioned dosage weighing good after, put into mortar and mix and carefully grind to form the micron level powder, in the φ 10mm * 20mm platinum crucible of packing into then, in Muffle furnace, slowly be warmed up to 500 ℃ and constant temperature pre-burning 2 hours, 50 ℃/minute of heating rates, take out the cooling back; And grind once more evenly, powder diameter is controlled at micron level, then 900 ℃ of following sintering 20 hours, and 50 ℃/minute of heating rates, grind the cooling back, makes the particle diameter of product be approximately 1 μ m, obtains Powdered BaKFeWO 6, and doing the ultraviolet-visible light analysis, XRD detects.
Embodiment 4:
To the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it comprises the steps:
1) choosing of raw material:
In the mol ratio of the Li in lithium chloride, iron oxide, brium carbonate, the tungsten oxide, Fe, Ba, W=1: 1: 1: 1 ratio, choose lithia, iron oxide, brium carbonate, tungsten oxide, standby;
2) lithium chloride, iron oxide, brium carbonate, tungsten oxide being put into mortar mixes and grinds to form the micron level powder, pack in the platinum crucible, put into Muffle furnace then and slowly be warmed up to 500 ℃ and constant temperature pre-burning 2 hours, heating rate is 1 ℃/minute, and take out the cooling back; And then grind, powder diameter is controlled at micron level (particle diameter is 1-2um), put into Muffle furnace, in Muffle furnace, be warmed up to 1200 ℃ of constant temperature 1 hour again, heating rate is 50 ℃/minute, take out grinding after naturally cooling to room temperature, make that the final products particle diameter is 1um, must be to visible light-responded tungsten-containing semi-conductor photocatalysis material { BaMFeWO 6(M=Li) }.
Embodiment 5:
To the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it comprises the steps:
1) choosing of raw material:
In the mol ratio of the Na in sodium carbonate, ferric trichloride, barium hydroxide, the tungsten oxide, Fe, Ba, W=1: 1: 1: 1 ratio, choose NaOH, ferric trichloride, barium hydroxide, tungsten oxide, standby;
2) sodium carbonate, ferric trichloride, barium hydroxide, tungsten oxide being put into mortar mixes and grinds to form the micron level powder, pack into then in the platinum crucible, put into Muffle furnace then and slowly be warmed up to 500 ℃ and constant temperature pre-burning 2 hours, heating rate is 5 ℃/minute, and take out the cooling back; And then grind, powder diameter is controlled at micron level (particle diameter is 1-2um), put into Muffle furnace, in Muffle furnace, be warmed up to 1200 ℃ of constant temperature 2 hours again, heating rate is 25 ℃/minute, take out grinding after naturally cooling to room temperature, make that the final products particle diameter is 1um, must be to visible light-responded tungsten-containing semi-conductor photocatalysis material { BaMFeWO 6(M=Na) }.
Embodiment 6:
To the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it comprises the steps:
1) choosing of raw material:
In the mol ratio of the Rb in rubidium halide, iron halide, brium carbonate, the tungsten halide, Fe, Ba, W=1: 1: 1: 1 ratio, choose rubidium halide, iron halide, brium carbonate, tungsten halide, standby;
2) rubidium halide, iron halide, brium carbonate, tungsten halide being put into mortar mixes and grinds to form the micron level powder, pack in the platinum crucible, put into Muffle furnace then and slowly be warmed up to 500 ℃ and constant temperature pre-burning 2 hours, heating rate is 50 ℃/minute, and take out the cooling back; And then grind, powder diameter is controlled at micron level (particle diameter is 1-2um), put into Muffle furnace, in Muffle furnace, be warmed up to 1100 ℃ of constant temperature 5 hours again, heating rate is 1 ℃/minute, take out grinding after naturally cooling to room temperature, make that the final products particle diameter is 1um, must be to visible light-responded tungsten-containing semi-conductor photocatalysis material { BaMFeWO 6(M=Rb) }.
Embodiment 7:
To the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it comprises the steps:
1) choosing of raw material:
In the mol ratio of the Rb in rubidium carbonate, iron oxide, brium carbonate, the tungsten oxide, Fe, Ba, W=1: 1: 1: 1 ratio, choose rubidium carbonate, iron oxide, brium carbonate, tungsten oxide, standby;
2) rubidium carbonate, iron oxide, brium carbonate, tungsten oxide being put into mortar mixes and grinds to form micron level powder (particle diameter is 2-3um), pack in the platinum crucible, put into Muffle furnace then and slowly be warmed up to 500 ℃ and constant temperature pre-burning 2 hours, heating rate is 25 ℃/minute, and take out the cooling back; And then grind, make that particle diameter is 1-2um, put into Muffle furnace, in Muffle furnace, be warmed up to 1000 ℃ of constant temperature 10 hours again, heating rate is 15 ℃/minute, take out grinding after naturally cooling to room temperature, make that the final products particle diameter is 1um, must be to visible light-responded tungsten-containing semi-conductor photocatalysis material { BaMFeWO 6(M=Rb) }.
Embodiment 8:
To the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it comprises the steps:
1) choosing of raw material:
In the mol ratio of the Cs in cesium nitrate, iron oxide, barium nitrate, the tungsten oxide, Fe, Ba, W=1: 1: 1: 1 ratio, choose cesium nitrate, iron oxide, barium nitrate, tungsten oxide, standby;
2) cesium nitrate, iron oxide, barium nitrate, tungsten oxide being put into mortar mixes and grinds to form micron level powder (particle diameter is 2-3um), pack in the platinum crucible, put into Muffle furnace then and slowly be warmed up to 500 ℃ and constant temperature pre-burning 2 hours, heating rate is 15 ℃/minute, and take out the cooling back; And then grind, make that particle diameter is 1-2um, put into Muffle furnace, in Muffle furnace, be warmed up to 950 ℃ of constant temperature 20 hours again, heating rate is 35 ℃/minute, take out grinding after naturally cooling to room temperature, make that the final products particle diameter is 1um, must be to visible light-responded tungsten-containing semi-conductor photocatalysis material { BaMFeWO 6(M=Cs) }.
Application example 1: utilize the sunshine decomposition water to prepare the experiment of hydrogen under the normal temperature:
Accurately hang turbid its generation photolysis reactions that makes in the mixed liquor of the catalysis material of the weighing 1g embodiment of the invention 1 and 480ml deionized water and 20ml methyl alcohol, use the catalyst reaction device of closed circulation, carry out magnetic agitation on one side, carry out radiation of visible light on one side from the outside, light source uses the 400w xenon lamp, the vessel that reactive tank uses borosilicate to make, obtain long wavelength's light by the copped wave wave filter from the light of light source, irradiates light catalysis material then carries out the hydrogen that produced and the detection and the measurement of oxygen with gas chromatography.Experimental result shows that hydrogen produces with the speed of 135umol/h, does not produce oxygen, and this shows that methanol oxidation is decomposed in the hole under radiation of visible light, electron reduction water generates hydrogen.
Application example 2:, the catalytic activity of above catalysis material is estimated by photocatalytic degradation effect to Acid Red G:
Accurately the catalysis material of 300 milligrams of embodiment that prepared 1 of weighing is in the Acid Red G solution of 15 mg/litre in 300 ml concns, at magnetic stirring apparatus and uviol lamp (dominant wavelength is 253.7nm), the power of uviol lamp is 20 watts, carry out the photocatalysis test, after 2 hours in wavelength 510nm place, the absorbance of test solution, the degradation efficiency of calculating Acid Red G.The photocatalytic degradation result of the test of Acid Red G is, under the situation of no catalysis material, the degradation rate of sample is 2%, uses catalysis material sample degradation rate among the present invention up to 90%.
Application example 3: the catalysis material of the embodiment of the invention 1 in air to the removal of VOCs:
With BaKFeWO 6Compound a kind of metal oxide is made catalysis material, respectively to mass concentration be 5.46,13.71,20.0,14.0,90.0mg/m 3H 2S, SO 2, NO 2, NH 3, CS 2Gas purifies experiment.The result shows that this catalysis material is to H 2The S purifying rate is more than 97%, to SO 2Purifying rate is more than 99%, to NO 2, NH 3Can all purify, but to CO, CO 2Clean-up effect is bad, to CS 2Average purifying rate is 81.3%.And to mass concentration be respectively 200,350,225mg/m 3Benzene,toluene,xylene gas carry out catalytic purification, the average elimination factor of benzene only is 8.8%, toluene only be 18.8%, dimethylbenzene only be 41.6%.
Application example 4: the catalysis material of the embodiment of the invention 1 is made photoelectric conversion material: the method by serigraphy under the room temperature is with BaKFeWO 6Slurry evenly is coated on the FTO electro-conductive glass, through 500 ℃ of high temperature sinterings 30 minutes, naturally cools to room temperature, through distilled water, alcohol flushing surface, and again through 500 ℃ of high temperature sinterings 30 minutes, cooling naturally.Subsequently resulting film was soaked 12 hours in the alcohol dilute solution of N3 dyestuff, take out and to use alcohol flushing, nitrogen just to dry up to come into operation.

Claims (5)

1. to the preparation method of visible light-responded tungsten-containing semi-conductor photocatalysis material, it is characterized in that it comprises the steps:
1) choosing of raw material: in the compound that contains M, contain Fe compound, contain Ba compound, contain the mol ratio of M, Fe in the compound of W, Ba, W=1: 1: 1: 1 ratio, choose compound, the compound that contains Fe, the compound that contains Ba that contains M, the compound that contains W, standby;
The compound of the described M of containing is oxide, the hydroxide that contains M, the halide that contains M, the carbonate that contains M, the nitrate that contains M that contain M, contain the sulfate of M or contain the acetate of M, and wherein M is Li, Na, K, Rb or Cs; The compound of the described Fe of containing is oxide, the hydroxide that contains Fe, the halide that contains Fe, the carbonate that contains Fe that contain Fe, contain the nitrate of Fe or contain the sulfate of Fe; The compound of the described Ba of containing is oxide, the hydroxide that contains Ba, the halide that contains Ba that contain Ba, contain the carbonate of Ba or contain the nitrate of Ba; The compound of the described W of containing is oxide, the hydroxide that contains W, the halide that contains W, the carbonate that contains W, the nitrate that contains W that contain W, contain the sulfate of W or contain the tungstates of W;
2) will contain the compound of M, the compound that contains Fe, the compound that contains the compound of Ba and contain W puts into mortar and mixes and grind to form the micron level powder, pack in the crucible, put into Muffle furnace then and slowly be warmed up to 500 ℃ and constant temperature pre-burning 1～24 hour, heating rate is 1～50 ℃/minute, and take out the cooling back; And then grind, powder diameter is controlled at micron level, powder after levigate is put into Muffle furnace, in Muffle furnace, be warmed up to 900～1200 ℃ of constant temperature 1～48 hour again, heating rate is 1～50 ℃/minute, take out grinding after naturally cooling to room temperature, obtain visible light-responded tungsten-containing semi-conductor photocatalysis material.
2. the application to visible light-responded tungsten-containing semi-conductor photocatalysis material as claimed in claim 1 is characterized in that: be applied to sunshine is carried out full spectral absorption.
3. the application to visible light-responded tungsten-containing semi-conductor photocatalysis material as claimed in claim 1 is characterized in that: be applied to can effectively remove harmful substances in air and sterilization under radiation of visible light.
4. the application to visible light-responded tungsten-containing semi-conductor photocatalysis material as claimed in claim 1 is characterized in that: be applied to utilize solar hydrogen making.
5. the application to visible light-responded tungsten-containing semi-conductor photocatalysis material as claimed in claim 1 is characterized in that: be applied to as photoelectric conversion material.
CN2008100482846A 2008-07-04 2008-07-04 Method for preparing visible light responding tungsten-containing semi-conductor photocatalysis material Expired - Fee Related CN101301614B (en)

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CN103480392A (en) * 2013-10-12 2014-01-01 桂林理工大学 Visible-light-responsive photocatalyst FeLaW3O12 and preparation method thereof
CN111408364A (en) * 2020-03-20 2020-07-14 桂林理工大学 Pyroelectric catalyst for treating dye sewage at room temperature under alternating cold and heat, and preparation method and application thereof

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CN103433052B (en) * 2013-09-05 2015-04-15 桂林理工大学 Visible-light-responsive photocatalyst Ba2WCuO6 and preparation method thereofore

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Publication number Priority date Publication date Assignee Title
CN103480392A (en) * 2013-10-12 2014-01-01 桂林理工大学 Visible-light-responsive photocatalyst FeLaW3O12 and preparation method thereof
CN111408364A (en) * 2020-03-20 2020-07-14 桂林理工大学 Pyroelectric catalyst for treating dye sewage at room temperature under alternating cold and heat, and preparation method and application thereof
CN111408364B (en) * 2020-03-20 2022-07-22 桂林理工大学 Pyroelectric catalyst for treating dye sewage at room temperature under alternating cold and heat, and preparation method and application thereof

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