| 四角星形BiVO4/Bi2O3催化剂的制备及性能 |
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| 引用本文： | 单爽,杨占旭.四角星形BiVO4/Bi2O3催化剂的制备及性能[J].无机化学学报,2016,32(4):649-654. |
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| 作者姓名： | 单爽 杨占旭 |
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| 作者单位： | 辽宁石油化工大学化学化工与环境学部, 抚顺 113001,辽宁石油化工大学化学化工与环境学部, 抚顺 113001 |
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| 基金项目： | 国家自然科学基金(No.21401093)和辽宁省高等学校优秀科技人才支持计划(No.LR2015036)资助项目。 |
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| 摘 要： | 采用水热法合成具有四角星形貌的钒酸铋,再将钒酸铋浸渍在碱溶液里二次水热,制备出BiVO_4/Bi_2O_3催化剂。采用X射线粉末衍射(XRD)、扫描电子显微镜(SEM),紫外-可见漫反射(UV-Vis DRS)等方法对样品进行表征。可见光下,BiVO_4/Bi_2O_3复合物的光催化降解罗丹明B性能及光电流响应均优于纯BiVO_4。这是由于BiVO_4/Bi_2O_3复合材料形成了异质结构,有效抑制了光生电子与空穴的复合效率。
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| 关 键 词： | BiVO4/Bi2O3 光催化 水热法 异质结构 |
| 收稿时间： | 2015/12/30 0:00:00 |
| 修稿时间： | 2016/2/20 0:00:00 |
Preparation and Performance of Four Angle Star-like BiVO4/Bi2O3 Catalyst |
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| SHAN Shuang and YANG Zhan-Xu.Preparation and Performance of Four Angle Star-like BiVO4/Bi2O3 Catalyst[J].Chinese Journal of Inorganic Chemistry,2016,32(4):649-654. |
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| Authors: | SHAN Shuang and YANG Zhan-Xu |
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| Institution: | College of Chemistry, Chemical Engineering and Environment Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, China and College of Chemistry, Chemical Engineering and Environment Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, China |
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| Abstract: | BiVO4 powders with four angle star-like were prepared by hydrothermal method, and then were dipped in alkali solution by hydrothermal route to synthesize BiVO4/Bi2O3.The as-synthesized samples were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), UV-Vis diffuse reflection absorption(DRS).Under visible light irradiation, the BiVO4/Bi2O3 composite exhibits much better photocatalytic performance for degradation of rhodamine B(RhB) and higher photocurrent(PC) than pure BiVO4.This significant enhancement on visible-light-driven photocatalytic activity should be ascribed to the formation of the BiVO4/Bi2O3 heterojunction, which can result in the high separation and transfer efficiency of photogenerated charge carriers. |
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| Keywords: | BiVO4/Bi2O3 photocatalytic hydrothermal heterogeneous structure |
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