Fabrication of CdS-Coated ZnO Nanorods Arrays for Photoelectrocatalytic Degradation of Phenol
CdS shells have been successfully deposited on ZnO nanorod arrays via using successive ionic layer adsorption and reaction (SILAR) technique upon which the thickness of the CdS shell can be accurately tuned by changing the deposition cycles. As determined by UV-Vis spectra, increasing
the deposition cycles leads to a linear increment on shell thickness of CdS, and the optimal deposition cycle for realizing the best photoelectrical response is 20 layers. Photoluminescent results reveal a proper band alignment between the CdS shell and the ZnO core, benefitting from which
CdS-coated ZnO nanorods exhibit good photoelectrochemical properties and high catalytic activity for removal of phenol under visible light irradiation. In the photoelectrocatalytic process, about 80% degradation of 100 mg/L phenol solution is achieved within 150 min under visible light irradiation,
which is much higher than that in the photocatalytic process of 17.6% or electrochemical process of 19.4%.
Keywords: Degradation of Phenol; Nanorod Arrays; Photoelectrocatalysis; Quantum Dot; Zinc Oxide
Document Type: Research Article
Affiliations: 1: School of Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China 2: Key Laboratory of Microsystems and Microstructures Manufacturing, Harbin Institute of Technology, Ministry of Education, Harbin 150080, China 3: Center for Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150080, China
Publication date: 01 August 2016
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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