Synthesis, characterization and visible-light driven photocatalysis by differently structured CdS/ZnS sandwich and core-shell nanocomposites

被引：47

作者：

Qutub, Nida ^{[1
]}

Pirzada, Bilal Masood ^{[1
]}

Umar, Khalid ^{[1
]}

Mehraj, Owais ^{[1
]}

Muneer, M. ^{[1
]}

Sabir, Suhail ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Dept Chem, Aligarh 202002, Uttar Pradesh, India

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2015年 / 74卷

关键词：

CdS/ZnS; Core-shell; Sandwich; Nanocomposites; Photocatalysis; Acid Blue; OPTICAL-PROPERTIES; CORE/SHELL NANOCRYSTALS; EPITAXIAL-GROWTH; SOLID-SOLUTIONS; LOW-TEMPERATURE; ZNS; CDS; NANOPARTICLES; CADMIUM; SIZE;

D O I：

10.1016/j.physe.2015.06.023

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

CdS/ZnS sandwich and core shell nanocomposites were synthesized by a simple and modified Chemical Precipitation method under ambient conditions. The synthesized composites were characterized by XRD, SEM, TEM. EDAX and FTIR. Optical properties were analyzed by UV-vis. Spectroscopy and the photoluminescence study was done to monitor the recombination of photo generated charge carriers. Thermal stability of the synthesized composites was analyzed by Thermal Gravimetric Analysis (TGA). XRD revealed the formation of nanocomposites as mixed diffraction peaks were observed in the XRD pattern. SEM and TEM showed the morphology of the nanocomposites particles and their fine particle size. EDAX revealed the appropriate molar ratios exhibited by the constituent elements in the composites and FTIR gave some characteristic peaks which indicated the formation of CdS/ZnS nanocomposites. Electrochemical Impedance Spectroscopy was done to study charge transfer properties along the nanocomposites. Photocatalytic properties of the synthesized composites were monitored by the photocatalytic kinetic study of Acid Blue dye and p-chlorophenol under visible light irradiation. Results revealed the formation of stable core-shell nanocomposites and their efficient photocatalytic properties. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：74 / 86

页数：13

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