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| 光还原法制备Pd/ZnO及其光催化脱色性能研究 |
| Photocatalytic Activity of Pd/ZnO Prepared by Photodeposition Method |
| Received:December 22, 2012 |
| DOI： |
| 中文关键词: 物理化学 ZnO Pd 异质结 光催化 |
| 英文关键词: physical chemistry ZnO Pd Heterojunction photocatalysis |
| 基金项目:四川省教育厅基金(No.09ZZ016)、四川理工学院博士启动基金(No.2010XJKRL007)和绿色催化四川省高校重点实验室开放课题(LYJ1102)资助 |
| Author Name | Affiliation | E-mail | | LU Yan | Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering | luyansichuan@yahoo.com.cn | | ZHONG Junbo | Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering | | | LI Jianzhang | Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering | lyl63@sina.com | | ZENG Jun | Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering | | | HE Jinjin | Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering | |
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| 中文摘要: |
| 用光还原法制备了Pd/ZnO光催化剂(Pd/Zn原子比分别为1/100、2/100和3/100)，以甲基橙为模拟有机污染物，对催化剂的光催化脱色性能进行了考察。光催化剂用XRD、紫外-可见漫反射和表面光电压谱仪进行了表征，结果表明：当Pd沉积量为2/100(Pd/Zn)时电子-空穴分离效应最高，且光催化脱色活性最高；沉积Pd后ZnO在可见光区的吸收增强；高的电子-空穴分离效应有利于提高ZnO光催化活性。 |
| 英文摘要: |
| ZnO and Pd/ZnO photocatalysts with different molar ratio of Pd/Zn (1/100, 2/100 and 3/100) were prepared by photodeposition method. Photocatalysts prepared were studied by X-ray diffraction (XRD), UV/Vis diffuse reflectance (DRS) and surface photovoltage spectra (SPS) techniques. The results show that 2/100 (Pd/Zn) prepared has the highest photoinduced charge separation rate. XRD results indicate that no peaks of Pd are detected in the 2θ region from 20° to 60°. Pd/ZnO absorbs much more light than ZnO in the visible light region. Among all of the photocatalysts prepared, the 2/100 (Pd/Zn) sample possesses the best photocatalytic activity. High photoinduced charge separation rate is beneficial to the photocatalytic activity of ZnO. |
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