Facile Synthesis of Bi 2 MoO 6 Microspheres Decorated by CdS Nanoparticles with Efficient Photocatalytic Removal of Levfloxacin Antibiotic

摘要

Developing high-efficiency and stable visible-light-driven (VLD) photocatalysts for removal of toxic antibiotics is still a huge challenge at present. Herein, a novel CdS/Bi 2 MoO 6 heterojunction with CdS nanoparticles decorated Bi 2 MoO 6 microspheres has been obtained by a simple solvothermal-precipitation-calcination method. 1.0CdS/Bi 2 MoO 6 has stronger light absorption ability and highest photocatalytic activity with levofloxacin (LEV) degradation efficiency improving 6.2 or 12.6 times compared to pristine CdS or Bi 2 MoO 6 . CdS/Bi 2 MoO 6 is very stable during cycling tests, and no appreciable activity decline and microstructural changes are observed. Results signify that the introduction of CdS could enhance the light absorption ability and dramatically boost the separation of charge carriers, leading to the excellent photocatalytic performance of the heterojunction. This work demonstrates that flower-like CdS/ Bi 2 MoO 6 is an excellent photocatalyst for the efficient removal of the LEV antibiotic.