| ZnO/CdS复合材料的合成与可见光催化性能 |
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| 引用本文： | 伍水生,黄毅,兰东辉,谭年元,易兵.ZnO/CdS复合材料的合成与可见光催化性能[J].无机化学学报,2013,29(18). |
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| 作者姓名： | 伍水生 黄毅 兰东辉 谭年元 易兵 |
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| 作者单位： | 湖南工程学院环境催化与废弃物再生化湖南省重点实验室, 材料与化工学院, 湘潭 410104,湖南工程学院环境催化与废弃物再生化湖南省重点实验室, 材料与化工学院, 湘潭 410104,湖南工程学院环境催化与废弃物再生化湖南省重点实验室, 材料与化工学院, 湘潭 410104,湖南工程学院环境催化与废弃物再生化湖南省重点实验室, 材料与化工学院, 湘潭 410104,湖南工程学院环境催化与废弃物再生化湖南省重点实验室, 材料与化工学院, 湘潭 410104 |
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| 基金项目： | 国家自然科学基金（No.21772035，21401088）、湖南工程学院博士启动基金（No.18RC009）、环境催化与废弃物再生化湖南省重点实验室开放基金（No.2018KF06）和湖南工程学院国家基金预研项目（No.YY1906）资助。 |
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| 摘 要： | 采用喷雾辅助气相沉积法在水热法合成的ZnO纳米线上沉积CdS纳米颗粒。采用X射线衍射仪（XRD）、激光拉曼仪（Raman）、扫描电镜（SEM）、透射电镜（TEM）、X射线光电子能谱分析谱（XPS）和紫外可见漫反射光谱等测试手段对复合光催化剂进行表征。结果表明，3~10 nm的CdS纳米粒子修饰在直径约为100 nm ZnO纳米线的表面。XPS和Raman表明复合材料中ZnO和CdS之间存在化学相互作用。可见光催化降解罗丹明B实验结果表明ZnO/CdS复合材料的催化性能优于单相CdS或ZnO，沉积时间为30 s合成的ZnO/CdS速率常数分别是CdS和ZnO的2.91和4.03倍，且具有较高的稳定性。ZnO/CdS复合材料光催化性能增强的可能原因为光吸收范围的拓展和光生载流子分离效率的提高。
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| 关 键 词： | 硫化镉 氧化锌 喷雾辅助气相沉积 光催化 载流子分离 |
| 收稿时间： | 2019/9/3 0:00:00 |
| 修稿时间： | 2019/10/27 0:00:00 |
Synthesis and Photocatalytic Activity of ZnO/CdS Composite |
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| WU Shui-Sheng,HUANG Yi,LAN Dong-Hui,TAN Nian-Yuan and YI Bing.Synthesis and Photocatalytic Activity of ZnO/CdS Composite[J].Chinese Journal of Inorganic Chemistry,2013,29(18). |
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| Authors: | WU Shui-Sheng HUANG Yi LAN Dong-Hui TAN Nian-Yuan and YI Bing |
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| Institution: | Hunan Provincial Key Laboratory of Environmental Catalysis&Waste Regeneration, School of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan 411104, China,Hunan Provincial Key Laboratory of Environmental Catalysis&Waste Regeneration, School of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan 411104, China,Hunan Provincial Key Laboratory of Environmental Catalysis&Waste Regeneration, School of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan 411104, China,Hunan Provincial Key Laboratory of Environmental Catalysis&Waste Regeneration, School of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan 411104, China and Hunan Provincial Key Laboratory of Environmental Catalysis&Waste Regeneration, School of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan 411104, China |
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| Abstract: | CdS-loaded ZnO nanowires (ZnO/CdS) were synthesized by a hydrothermal-spray assisted vapor deposition method and were characterized by X-ray diffractometry (XRD), Raman spectroscopy (Raman), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and UV-visible (UV-Vis) diffuse reflectance spectroscopy. The results showed that 3~10 nm CdS nanoparticles were successfully deposited on the surface of ZnO nanowires with a diameter of about 100 nm. XPS and Raman showed that chemical interactions such as bonding and coupled between ZnO and CdS in composites. Catalytic degradation of rhodamine B (RhB) under visible light showed the complexation of cadmium sulfide can enhance the photocatalytic activity of ZnO/CdS and the degradation rate constants of ZnO/CdS synthesized with 30 s deposition time were 2.91 and 4.03 times that of CdS and ZnO, respectively. The enhancement of the photocatalytic performance of the composite may be due to the expansion of the light absorption range and the improvement of the photo-generated carrier separation efficiency. |
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| Keywords: | cadmium sulfide zinc oxide spray-assisted vapor deposition photocatalysis charge transfer |
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