Observation of catalytic properties of CdS-ZnO composite nanorods synthesized by aqueous chemical growth technique

被引：25

作者：

Nayak, J. ^{[1
]}

Lohani, H. ^{[1
]}

Bera, T. K. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys & Meteorol, Kharagpur 721302, W Bengal, India

来源：

CURRENT APPLIED PHYSICS | 2011年 / 11卷 / 01期

关键词：

Catalysis; Composite; Raman-spectroscopy; Photo-current; Nanorod; CHARGE-TRANSFER PROCESSES; ELECTRON-TRANSFER; PHOTOELECTROCHEMISTRY; SYSTEMS; PROBE;

D O I：

10.1016/j.cap.2010.06.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have synthesized the nanorods of CdS-ZnO composite by chemical method and have investigated their structure, optical and electrical properties by suitable techniques. The X-rays diffraction results prove the co-existence of CdS and ZnO in usual hexagonal structure and no peak corresponding to any intermediate phase has been identified. The above observation has been confirmed by micro-Raman study. The photo-current action spectra of CdS-ZnO nanorods show a significant enhancement of the photo-current due to visible sensitization by surface CdS layer. In an attempt to explore the catalytic activity of CdS-ZnO, the photodegradation of 3,4-dihydroxy benzoic acid has been investigated under visible irradiation from a halogen lamp. The concentration of aqueous solution of 3,4-dihydroxy benzoic acid decreases with increase in the irradiation time which is attributed to photodegradation of the benzoic acid. A possible mechanism for the redox reactions responsible for degradation of the benzoic acid has been suggested. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：93 / 97

页数：5

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