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Graphene-enhanced visible-light photocatalysis of large-sized CdS particles for wastewater treatment

Wei Lü12*, Jie Chen1, Yao Wu1, Lianfeng Duan12, Yue Yang1 and Xin Ge3

Author Affiliations

1 Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun 130012, China

2 Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China

3 State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China

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Nanoscale Research Letters 2014, 9:148  doi:10.1186/1556-276X-9-148

Published: 26 March 2014


The hybrid composites of graphene decorated by large-sized CdS particles (G/M-CdS) were prepared by a one-pot solvothermal route in which the reduction of graphite oxide into graphene was accompanied by the generation of microsized CdS particles. The structure and composition of the obtained nanocomposites were studied by means of X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The CdS particles with the average sizes of approximately 640 nm were formed on graphene sheets. The as-prepared composite was used as adsorbent to remove dye from wastewater using the organic dye Rhodamine B as the adsorbate. The G/M-CdS composite reveals a high photodegradation rate under visible light irradiation. Our results demonstrate that the G/M-CdS is very promising for removing organic dyes from wastewater.

CdS; Graphene; Photocatalysis; Wastewater treatment