CN103007971B - Zinc tungstate/bismuth oxyiodide heterojunction visible light photocatalysis material and fabrication method thereof - Google Patents
Zinc tungstate/bismuth oxyiodide heterojunction visible light photocatalysis material and fabrication method thereof Download PDFInfo
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- CN103007971B CN103007971B CN201210567671.7A CN201210567671A CN103007971B CN 103007971 B CN103007971 B CN 103007971B CN 201210567671 A CN201210567671 A CN 201210567671A CN 103007971 B CN103007971 B CN 103007971B
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Abstract
The invention belongs to the field of new materials, and relates to a zinc tungstate/bismuth oxyiodide heterojunction visible light photocatalysis material and a fabrication method thereof. The photocatalysis material comprises zinc tungstate and bismuth oxyiodide, wherein the mol ratio of bismuth oxyiodide is 25%-50%. The fabrication method comprises the steps of dissolving zinc acetate and sodium wolframate in deionized water, adding a sodium tungstate solution into a zinc acetate solution to obtain a zinc tungstate nanorod, dissolving potassium iodide in the deionized water, adding bismuth nitrate, adding the prepared zinc tungstate nanorod into a mixed solution, and finally obtaining the zinc tungstate/bismuth oxyiodide heterojunction photocatalysis material. The method can be conducted at room temperature and under normal pressure, is low in cost, simple in process, and suitable for large-scale production, and has important potential application in industrial production. The prepared zinc tungstate/bismuth oxyiodide heterojunction photocatalysis material can better response to visible light, and shows an excellent visible light photocatalysis performance.
Description
Technical field
The invention belongs to field of new, relate to a kind of Zinc Tungstate/bismuth oxyiodide hetero-junctions visible-light photocatalysis material and preparation method thereof.
Background technology
In recent years, photocatalysis is obtaining general concern aspect environmental improvement and energy development, and the research and development of catalysis material are just becoming at present the focus of research both at home and abroad.But the practical application of photochemical catalyst is subject to the restriction of two factors: photo-generated carrier recombination probability is high and spectral response range is narrow.Therefore the visible-light photocatalysis material of, seeking to have high-efficiency catalytic activity will be that photocatalysis technology further moves towards practical inexorable trend.
Zinc Tungstate, as a kind of important photochemical catalyst, is showing good photocatalytic activity aspect photodissociation water and degradable organic pollutant.Zhu Yongfa seminar of Tsing-Hua University, at Inorg.Chem.2007, reported on 46,8372-8378 with hydro-thermal method and synthesized nanometer Zinc Tungstate photochemical catalyst, and this photochemical catalyst shows stronger ultraviolet light photocatalysis activity in the process of rhodamine B degradation solution.But because Zinc Tungstate has larger band-gap energy, only under the irradiation of ultraviolet light, just can be excited, and be subject to light induced electron hole that optical excitation produces to the compound shortcoming such as fast, limit its application in practice.In order to make full use of sunshine, Zinc Tungstate is carried out to modification, make its spectral absorption expand to visible region and improve its visible light photocatalysis active, significant for the practical value of exploitation Zinc Tungstate photochemical catalyst.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, poor and the high problem of carrier recombination probability for the light absorption of Zinc Tungstate material, provide a kind of based on Zinc Tungstate/bismuth oxyiodide hetero-junctions visible-light photocatalysis material Zinc Tungstate, efficient, a kind of method of simple this material of preparation is provided simultaneously, the method is with low cost, be easy to large-scale production, can significantly improve the separation probability of photo-generated carrier, improve the photocatalysis performance of material.
The present invention is achieved in the following ways:
Zinc Tungstate/bismuth oxyiodide hetero-junctions visible-light photocatalysis material, is characterized in that it is made up of Zinc Tungstate and bismuth oxyiodide, and chemical formula is ZnWO
4/ BiOI, in component, the mol ratio of bismuth oxyiodide is 25%～50%.
The preparation method of above-mentioned Zinc Tungstate/bismuth oxyiodide hetero-junctions visible-light photocatalysis material, is characterized in that comprising the following steps:
(1) prepare Zinc Tungstate nanometer rods: zinc acetate and sodium tungstate are dissolved in respectively in deionized water, then sodium tungstate solution are joined in acetic acid zinc solution and stir, by the pH value of ammonia spirit regulator solution; After stirring, mixed solution is transferred in reactor, be placed at 180 DEG C and react 12 hours, naturally cool to after room temperature, products therefrom is collected, washs, is dried, obtain Zinc Tungstate nanometer rods;
(2) prepare Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material: KI is dissolved in deionized water, the bismuth nitrate of amount of substance such as adds and continue to stir; Then to the Zinc Tungstate nanometer rods that adds step (1) to make in above-mentioned mixed solution, stirring at room temperature is even, then 80 DEG C of heating water baths 2 hours; Products therefrom is collected, washs, is dried, obtain Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material.
The preparation method of above-mentioned Zinc Tungstate/bismuth oxyiodide hetero-junctions visible-light photocatalysis material, is characterized in that the described zinc acetate of step (1), the consumption mol ratio of sodium tungstate are 1:1.Zinc Tungstate nanometer rods described in step (2), the consumption mol ratio of KI are 1:0.33～1.
It is a kind of effective ways that improve material visible-light photocatalytic activity that two or more different semi-conducting materials are compounded to form to hetero-junctions.Hetero-junctions utilizes built in field to make carrier transport have directionality, can improve the separation probability of photo-generated carrier, by compound to narrow gap semiconductor and wide band gap semiconducter, can expand the response spectrum scope of wide band gap semiconducter by the sensibilization of narrow gap semiconductor in addition.Bismuth oxyiodide is as a kind of novel semi-conductor catalysis material, and its band-gap energy is 1.73-1.92eV, can effectively absorb visible ray.And bismuth oxyiodide, as a kind of p-type semiconductor, can be compounded to form Zinc Tungstate/bismuth oxyiodide heterojunction structure with N-shaped semiconductor Zinc Tungstate, is expected to obtain having the heterojunction photocatalyst of efficient visible light photocatalytic activity.
Method of the present invention can be carried out under room temperature normal pressure, and with low cost, technique is simple, is suitable for large-scale production, has important potential application aspect industrial production.Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material responding to visible light well of preparation, show excellent visible light photocatalysis performance, the radiation of visible light that is greater than 420nm at wavelength is after 4 hours, and the efficiency of Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material degraded methyl orange reaches 86%.By contrast, pure Zinc Tungstate does not almost show visible light catalytic ability, and the degradation efficiency of pure bismuth oxyiodide only has 26%.
Detailed description of the invention
Provide three most preferred embodiments of the present invention below.
Embodiment 1
(1) 0.219g zinc acetate and 0.330g sodium tungstate are dissolved in respectively in 10ml deionized water, stir 10 minutes, then sodium tungstate solution is dropwise joined in acetic acid zinc solution and continue and stir, by the pH value to 9.0 of the 25wt%-28wt% ammonia spirit regulator solution diluting.Stir and after 20 minutes, mixed solution is transferred in the reactor of 25ml, be placed at 180 DEG C and react 12 hours, naturally cool to after room temperature, products therefrom is collected, washs, is dried, obtain Zinc Tungstate nanometer rods.
(2) 0.166g KI is dissolved in 20ml deionized water, adds 0.485g bismuth nitrate and continue and stir.Then in above-mentioned mixed solution, add 0.314g Zinc Tungstate nanometer rods, the mol ratio of KI and Zinc Tungstate is 1:1, and stirring at room temperature 0.5 hour is followed 80 DEG C of heating water baths 2 hours.Products therefrom is collected, washs, is dried, obtain Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material, made catalyst called after ZB-1.In component, the mol ratio of bismuth oxyiodide is 50%.
The radiation of visible light that is greater than 420nm at wavelength is after 4 hours, and the efficiency of Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material degraded methyl orange reaches 75%.
Embodiment 2
(1) 0.219g zinc acetate and 0.330g sodium tungstate are dissolved in respectively in 10ml deionized water, stir 10 minutes, then sodium tungstate solution is dropwise joined in acetic acid zinc solution and continue and stir, by the pH value to 9.0 of the 25wt%-28wt% ammonia spirit regulator solution diluting.Stir and after 20 minutes, mixed solution is transferred in the reactor of 25ml, be placed at 180 DEG C and react 12 hours, naturally cool to after room temperature, products therefrom is collected, washs, is dried, obtain Zinc Tungstate nanometer rods.
(2) 0.083g KI is dissolved in 20ml deionized water, adds 0.243g bismuth nitrate and continue and stir.Then in above-mentioned mixed solution, add 0.314g Zinc Tungstate nanometer rods, the mol ratio of KI and Zinc Tungstate is 1:2, and stirring at room temperature 0.5 hour is followed 80 DEG C of heating water baths 2 hours.Products therefrom is collected, washs, is dried, obtain Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material, made catalyst called after ZB-2.In component, the mol ratio of bismuth oxyiodide is 33%.
The radiation of visible light that is greater than 420nm at wavelength is after 4 hours, and the efficiency of Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material degraded methyl orange reaches 86%.
Embodiment 3
(1) 0.219g zinc acetate and 0.330g sodium tungstate are dissolved in respectively in 10ml deionized water, stir 10 minutes, then sodium tungstate solution is dropwise joined in acetic acid zinc solution and continue and stir, by the pH value to 9.0 of the 25wt%-28wt% ammonia spirit regulator solution diluting.Stir and after 20 minutes, mixed solution is transferred in the reactor of 25ml, be placed at 180 DEG C and react 12 hours, naturally cool to after room temperature, products therefrom is collected, washs, is dried, obtain Zinc Tungstate nanometer rods.
(2) 0.055g KI is dissolved in 20ml deionized water, adds 0.162g bismuth nitrate and continue and stir.Then in above-mentioned mixed solution, add 0.314g Zinc Tungstate nanometer rods, the mol ratio of KI and Zinc Tungstate is 1:3, and stirring at room temperature 0.5 hour is followed 80 DEG C of heating water baths 2 hours.Products therefrom is collected, washs, is dried, obtain Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material, made catalyst called after ZB-3.In component, the mol ratio of bismuth oxyiodide is 25%.
The radiation of visible light that is greater than 420nm at wavelength is after 4 hours, and the efficiency of Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material degraded methyl orange reaches 50%.
Claims (3)
1. Zinc Tungstate/bismuth oxyiodide hetero-junctions visible-light photocatalysis material, is made up of Zinc Tungstate and bismuth oxyiodide, and in component, the molar fraction of bismuth oxyiodide is 25%～50%; It is characterized in that preparation method comprises the following steps:
(1) prepare Zinc Tungstate nanometer rods: zinc acetate and sodium tungstate are dissolved in respectively in deionized water, then sodium tungstate solution are joined in acetic acid zinc solution and stir, by the pH value to 9.0 of ammonia spirit regulator solution; After stirring, the mixed solution of sodium tungstate and zinc acetate is transferred in reactor, be placed at 180 DEG C and react 12 hours, then naturally cool to room temperature, products therefrom is collected, washs, is dried, obtain Zinc Tungstate nanometer rods;
(2) KI is dissolved in deionized water, the bismuth nitrate of amount of substance such as adds and stir; Then to the Zinc Tungstate nanometer rods that adds step (1) to make in the mixed solution of above-mentioned KI and bismuth nitrate, stirring at room temperature was even, with 80 DEG C of heating water baths 2 hours; Products therefrom is collected, washs, is dried, obtain Zinc Tungstate/bismuth oxyiodide heterojunction photocatalysis material.
2. Zinc Tungstate/bismuth oxyiodide hetero-junctions visible-light photocatalysis material according to claim 1, is characterized in that the consumption mol ratio of zinc acetate, sodium tungstate in preparation method's step (1) is 1:1.
3. Zinc Tungstate/bismuth oxyiodide hetero-junctions visible-light photocatalysis material according to claim 1, is characterized in that the consumption mol ratio of Zinc Tungstate nanometer rods, KI in preparation method's step (2) is 1:0.33～1.
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| CN103480391A (en) * | 2013-09-27 | 2014-01-01 | 扬州大学 | Preparation method for magnetic Fe3O4@ZnWO4 composite photocatalyst |
| CN103846085B (en) * | 2014-03-17 | 2015-12-30 | 湖州师范学院 | The ZnWO of hydro-thermal method preparation doping Bi 4photochemical catalyst |
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| CN104437550B (en) * | 2014-11-25 | 2017-05-24 | 上海交通大学 | Method for preparing zinc tungstate-cadmium sulfide heterojunction photocatalyst |
| CN105214695A (en) * | 2015-11-17 | 2016-01-06 | 中国科学院海洋研究所 | A kind of Bi 2wO 6/ BiOI heterojunction composite photocatalyst and its preparation method and application |
| CN105642316A (en) * | 2015-12-22 | 2016-06-08 | 江苏大学 | Method for preparing BiOI / CdWO4 heterojunction photocatalyst |
| CN107032299B (en) * | 2016-02-03 | 2019-03-08 | 天津大学 | Carry platinum wolframic acid zinc nano material and its application in air-sensitive field |
| CN111254461B (en) * | 2020-01-19 | 2021-08-27 | 安徽大学 | Tungsten oxide/bismuth oxyiodide heterojunction material for photo-reduction of carbon dioxide and preparation method and application thereof |
| CN112973671A (en) * | 2021-03-22 | 2021-06-18 | 合肥工业大学 | Nano bismuth tungstate/zinc oxide heterojunction catalyst, preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618332A (en) * | 2009-07-31 | 2010-01-06 | 华中师范大学 | BiOI/TiO2 heterojunction type photocatalytic material and low-temperature preparation method thereof |
| CN102188984A (en) * | 2011-03-29 | 2011-09-21 | 哈尔滨工业大学 | Composite photochemical catalyst BiOCl/BiOI and preparation method thereof |
| CN102513135A (en) * | 2011-12-30 | 2012-06-27 | 温州大学 | BiOI (bismuth oxyiodide)/AgX (silver halide) visible light response photocatalyst, preparation methods for same and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7229946B2 (en) * | 2003-03-24 | 2007-06-12 | Saudi Basic Industries Corporation | Catalyst composition for the selective conversion of alkanes to unsaturated carboxylic acids, method of making and method of using thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618332A (en) * | 2009-07-31 | 2010-01-06 | 华中师范大学 | BiOI/TiO2 heterojunction type photocatalytic material and low-temperature preparation method thereof |
| CN102188984A (en) * | 2011-03-29 | 2011-09-21 | 哈尔滨工业大学 | Composite photochemical catalyst BiOCl/BiOI and preparation method thereof |
| CN102513135A (en) * | 2011-12-30 | 2012-06-27 | 温州大学 | BiOI (bismuth oxyiodide)/AgX (silver halide) visible light response photocatalyst, preparation methods for same and application thereof |
Non-Patent Citations (4)
| Title |
|---|
| 张晓薇 等.棒状ZnWO4纳米晶的合成及其光催化性能.《无机材料学报》.2012,第27卷(第11期),第1159-1163页. |
| 新型光催化剂的表界面调控及其光催化性能增强;蒋静;《中国优秀博士学位论文全文数据库工程科技Ⅰ辑》;20120815(第8期);第63页第5.2节-第74页第5.4节 * |
| 棒状ZnWO4纳米晶的合成及其光催化性能;张晓薇 等;《无机材料学报》;20121130;第27卷(第11期);第1159-1163页 * |
| 蒋静.新型光催化剂的表界面调控及其光催化性能增强.《中国优秀博士学位论文全文数据库工程科技Ⅰ辑》.2012,(第8期),第63页第5.2节-第74页第5.4节. |
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