Biomolecule-Assisted Construction of Cadmium Sulfide Hollow Spheres with Structure-Dependent Photocatalytic Activity

Authors

  • Chengzhen Wei,

    1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    2. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    Search for more papers by this author
  • Wenzhe Zang,

    1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    2. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    Search for more papers by this author
  • Jingzhou Yin,

    1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    2. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    3. School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an Jiangsu 223300 (P. R. China)
    Search for more papers by this author
  • Prof. Qingyi Lu,

    Corresponding author
    1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    • State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    Search for more papers by this author
  • Qun Chen,

    1. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    Search for more papers by this author
  • Rongmei Liu,

    1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    2. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    3. College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu Anhui 241000 (P. R. China)
    Search for more papers by this author
  • Feng Gao

    Corresponding author
    1. Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    • Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (P. R. China)
    Search for more papers by this author

Abstract

In this study, we report the synthesis of monodispersive solid and hollow CdS spheres with structure-dependent photocatalytic abilities for dye photodegradation. The monodispersive CdS nanospheres were constructed with the assistance of the soulcarboxymthyi chitosan biopolymer under hydrothermal conditions. The solid CdS spheres were corroded by ammonia to form hollow CdS nanospheres through a dissolution–reprecipitation mechanism. Their visible-light photocatalytic activities were investigated, and the results show that both the solid and the hollow CdS spheres have visible-light photocatalytic abilities for the photodegradation of dyes. The photocatalytic properties of the CdS spheres were demonstrated to be structure dependent. Although the nanoparticles comprising the hollow spheres have larger sizes than those comprising the solid spheres, the hollow CdS spheres have better photocatalytic performances than the solid CdS spheres, which can be attributed to the special hollow structure.

Ancillary