화학공학소재연구정보센터
Journal of Colloid and Interface Science, Vol.486, 58-66, 2017
Fabrication of layered (CdS-Mn/MoS2/CdTe)-promoted TiO2 nanotube arrays with superior photocatalytic properties
A novel (CdS-MniMoS(2)/CdTe)-sensitized TiO2 nanotube arrays (NTAs) photoelectrode has been prepared by electrodeposite, successive ionic layer adsorption and reaction (SILAR) coupled with hydrothermal method. When a ZnS layer was added on the top of CdS-Mn/MoS2/CdTe/TiO2, a notable red-shift and high absorption was observed in the visible light region. The photocurrent density (mA/cm(2)) systematically increases from TiO2 NTAs (0.43), CdTe/TiO2 (1.09), MoS2/CdTe/TiO2 (1.80), CdS-Mn/MoS2/CdTe/TiO2 (2.40), to ZnS/CdS-MniMoS(2)/CdTe/TiO2 (3.41) under visible light irradiation, due to the type-II semiconductor heterostructures comprising multiple components with a staggered band offset. Such a heterostructure possesses an enhanced photocatalytic performance towards degradation of organic contaminant, e.g. P-Nitrophenol (PNP) and Rhodamine B (RhB). (C) 2016 Elsevier Inc. All rights reserved.