Chemical Journal of Chinese Universities ›› 2019, Vol. 40 ›› Issue (3): 489-498.doi: 10.7503/cjcu20180596

• Physical Chemistry • Previous Articles     Next Articles

Synthesis and Photocatalytic Performance of CdS/CuS Core-shell Nanocomposites

ZHANG Kejie1,2,*(), LI Yu1, XIA Yuan1, HAN Shuo1, CAO Jing1, WANG Hanyang1, LUO Wentao1, ZHOU Zhiping3   

  1. 1. School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China
    2. Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing 211167, China
    3. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
  • Received:2019-08-27 Online:2019-01-24 Published:2019-01-24
  • Contact: ZHANG Kejie E-mail:zhangkejie2003@163.com
  • Supported by:
    † Supportted by the National Natural Science Foundation of China(No.21603101) and the Innovation Fund of Nanjing Institute of Technology, China(Nos.CKJA201303, TB201802035, TB201802038).

Abstract:

Four CdS/CuS core-shell nanocomposite samples with different molar ratios of CdS to CuS were synthesized via liquid-phase thermal decomposition and ion adsorption method under different crystallization time of CdS, using cadmium acetate, 2-mercaptobenzothiazole, sodium sulfide and cupric chloride as the raw materials. The experimental results indicated that the samples were spherical nucleus-like structures and their particle size was controllable with the crystallization time of CdS. The degradation efficiencies of rhodamine B(RhB) and methylene blue(MB) both reached about 99% when the molar ratio of CdS to CuS was 4∶1 and the crystallization time of CdS was 10 min. The method of ion adsorption makes CuS fully coat on the surface of CdS, forming effective core-shell structure and obviously improving the photocatalytic performance of CdS.

Key words: CdS/CuS, Nanocomposite, Photocatalysis, Degradation efficiency

CLC Number: