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| Ag0/ZnO异质结光催化剂的制备及其光催化性能 |
| Study onpreparation and photocatalytic performance of Ag0/ZnO heterojunctions |
| Received:January 14, 2024 |
| DOI： |
| 中文关键词: 光催化剂 异质结 ZnO Ag0 |
| 英文关键词: photocatalysis heterojunctions ZnO Ag0 |
| 基金项目:乡村低成本环境治理技术四川省高校重点实验室开放项目(XCH2022ZB-04)；钒钛资源综合利用四川省重点实验室项目(2020FTSZ04，2024FTSZ06)；四川轻化工大学大学生创新基金项目(S20221062209) |
| Author Name | Affiliation | | ZHANG Ying | College of Chemistry and Environmental Engineering, College of Chemical Engineering,Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China | | REN Wang | College of Chemistry and Environmental Engineering, College of Chemical Engineering,Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China | | ZHOU You | College of Chemistry and Environmental Engineering, College of Chemical Engineering,Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China | | MU Kehan | College of Chemistry and Environmental Engineering, College of Chemical Engineering,Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China | | LI Minjiao | College of Chemistry and Environmental Engineering, College of Chemical Engineering,Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China |
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| 中文摘要: |
| 采用溶胶-凝胶法制备了Ag0/ZnO光催化剂异质结。运用X射线衍射仪(XRD)、孔隙比表面分析仪(BET)、X射线能谱分析仪(EDS)、紫外-可见漫反射光谱(UV-Vis DRS)对光催化剂的晶体结构、比表面积、元素组成、光学吸收特性等进行了表征，证实了异质结的成功制备。用表面光电压仪(SPS)等对光催化剂的光生电荷分离特性进行了研究。通过降解有机模拟物罗丹明B(RhB)来考察Ag0/ZnO异质结的光催化活性。用四唑蓝(NBT)-.O2-反应考察了异质结光催化降解过程中.O2-的产率。结果表明，Ag与ZnO摩尔比为6%的Ag0/ZnO光催化剂具有最佳的光催化活性，在汞灯的照射下，Ag0/ZnO光催化活性是参考ZnO的1.79倍。 |
| 英文摘要: |
| Ag0/ZnO photocatalytic heterojunctions were prepared by a sol-gel method. The crystal structures, specific surface area, element component and optical properties were characterized by X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET), energy dispersive spectrum (EDS) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). Surface photovoltage spectroscopy (SPS) was employed to study the separation of photoinduced carriers of the heterojunctions. Photocatalytic activity of the catalysts was tested on the degradation mode of Rhodamine B (RhB). The yield of .O2- during the photocatalytic degradation process was detected by tetrazolium blue (NBT)-.O2- experiment. When the molar ratio of Ag to ZnO is 6%, the resulting heterojunction exhibits best photocatalytic properties, and photocatalytic activity of 6% Ag0/ZnO is 1.79 times that of the reference ZnO under a mercury lamp irradiation. |
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