Synthesis and characterization of CdS-based ternary composite for enhanced visible light-driven photocatalysis

被引:11
|
作者
Singh, Arvind [1 ]
Sinha, A. S. K. [1 ]
机构
[1] Banaras Hindu Univ, Dept Chem Engn & Technol, Indian Inst Technol, Varanasi 221005, Uttar Pradesh, India
关键词
Electron transfer; Organic dye degradation; Photocatalysis; Surface interaction; CADMIUM-SULFIDE PHOTOCATALYSTS; HYDROGEN-PRODUCTION; WATER; TIO2; DEGRADATION; NANOCOMPOSITE; TEMPERATURE; HETEROSTRUCTURES; PERFORMANCE; GENERATION;
D O I
10.1016/j.jpcs.2018.04.030
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Active ternary graphite and alumina-supported cadmium sulphide (CdS) composite was synthesized by impregnation method followed by high-temperature solid-gas reaction and characterized by X-ray diffraction (XRD), photoluminescence spectroscopy (PL), diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) techniques. The ternary CdS-graphite-alumina composite exhibited superior catalytic activity compared with the binary CdS-alumina composite due to its better visible-light absorption and higher charge separation. The ternary composite has a bed-type structure. It permits a greater interaction at the interface due to intimate contact between CdS and graphite in the ternary composite. This composite has a highly efficient visible light-driven photocatalytic activity for sustainable hydrogen production. It is also capable of degrading organic dyes in wastewater.
引用
收藏
页码:123 / 132
页数:10
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