复合半导体光催化剂<em>p</em>-CoO/<em>n</em>-CdS 的制备、表征及光催化性能

引用本文: 杜欢, 王晟, 刘恋恋, 刘忠祥, 李振, 卢南, 刘福生. 复合半导体光催化剂p-CoO/n-CdS 的制备、表征及光催化性能[J]. 物理化学学报, 2010, 26(10): 2726-2732. doi: 10.3866/PKU.WHXB20101023 shu

Citation: DU Huan, WANG Sheng, LIU Lian-Lian, LIU Zhong-Xiang, LI Zhen, LU Nan, LIU Fu-Sheng. Preparation, Characterization and Photocatalytic Property of p-CoO/n-CdS Compound Semiconductor Photocatalyst[J]. Acta Physico-Chimica Sinica, 2010, 26(10): 2726-2732. doi: 10.3866/PKU.WHXB20101023 shu

复合半导体光催化剂p-CoO/n-CdS 的制备、表征及光催化性能

杜欢 ^1, ,
王晟 ^2, ,
刘恋恋 ^1, ,
刘忠祥 ^1, ,
李振 ^1, ,
卢南 ^1, ,
刘福生 ^1,

基金项目:
国家自然科学基金(50876047)资助项目 (50876047)

摘要:

以醋酸镉、十二硫醇、硬脂酸和醋酸钴等为原料, 采用新方法制备了CdS 和一系列p-CoO/n-CdS 复合半导体光催化剂. 用X 射线衍射(XRD) 、扫描电子显微镜(SEM) 、透射电子显微镜(TEM) 、N₂ 吸附-脱附和紫外-可见漫反射光谱(UV-Vis DRS) 等对产物进行了表征. 结果表明, p-CoO/n-CdS 复合半导体中, CoO 粒子紧密结合在CdS 颗粒上, CdS 的颗粒粒径在100 nm 左右, 为六方纤锌矿晶型, CoO 的颗粒粒径在10 nm 左右, 颗粒粒径分布均匀. p-CoO/n-CdS 的UV-Vis DRS 分析结果表明, 在400-550 nm 范围内都有一强吸收带, 属于CdS 在可见光区的特征吸收. 用光催化降解甲基橙测试了光催化性能, 结果表明, p-CoO/n-CdS 光催化活性是CdS 光催化活性的2.2 倍左右. 光腐蚀测试结果表明, CdS 的光腐蚀速率是p-CoO/n-CdS 中CdS 光腐蚀速率的2 倍以上, 说明CoO 与CdS 复合对CdS 的光腐蚀具有明显的抑制作用.

关键词:

English

Preparation, Characterization and Photocatalytic Property of p-CoO/n-CdS Compound Semiconductor Photocatalyst

1.
1. Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China;
2. College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P. R. China
Received Date: 17 May 2010
Available Online: 27 September 2010
Fund Project:
国家自然科学基金(50876047)资助项目

Abstract:

The photocatalysts CdS and p-n coupled semiconductor photocatalysts CoO/CdS(p-CoO/n-CdS) were prepared using cadmium acetate, lauryl mercaptan, cobalt acetate, and stearic acid by a new method. The structural and optical properties of CdS and p-CoO/n-CdS were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM),N₂ adsorption -desorption, and ultraviolet -visible diffuse reflection spectroscopy (UV-Vis DRS). The results showed that the particles of CoO compactly connected with the particles of CdS in the p-CoO/n-CdS. The particle size of CdS was about 100 nm and the crystalloid of CdS was hexa n spiauterite. The particle size of CoO was about 10 nm, and the distribution of particles size was uniform. The results of UV-Vis DRS showed that the nano-CdS particles could absorb the visible light at wavelengths between 400 and 550 nm which is characteristic absorption of CdS in the visible region. The photocatalytic activity of the photocatalyst was evaluated by photocatalytic degradation of methyl orange (MO). The results showed that the photocatalytic activity of p-CoO/n-CdS was much higher, which was 2.2 times than that of CdS on the photocatalytic degradation of methyl orange. The results of photocorrosion test showed that the photocorrosion rate of CdS was two or more times than that of p-CoO/n-CdS, which indicated that CoO coupled with CdS could effectively restrain the photocorrosion of CdS.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

复合半导体光催化剂p-CoO/n-CdS 的制备、表征及光催化性能

English

Preparation, Characterization and Photocatalytic Property of p-CoO/n-CdS Compound Semiconductor Photocatalyst

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

复合半导体光催化剂p-CoO/n-CdS 的制备、表征及光催化性能

English

Preparation, Characterization and Photocatalytic Property of p-CoO/n-CdS Compound Semiconductor Photocatalyst

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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