Facile Synthesis of Bi2MoO6 Microspheres Decorated by CdS Nanoparticles with Efficient Photocatalytic Removal of Levfloxacin Antibiotic
Facile Synthesis of Bi2MoO6 Microspheres Decorated by CdS Nanoparticles with Efficient Photocatalytic Removal of Levfloxacin Antibiotic
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DOI：
10.3390/catal8100477
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发表时间：
2018-10-01
期刊：
影响因子：
3.9
通讯作者：
Liu, Jianshe
中科院分区：
文献类型：
--
作者：
Li, Shijie;Liu, Yanping;Liu, Jianshe
开发高效、稳定的可见光驱动光催化剂去除有毒抗生素仍是目前面临的巨大挑战。本文采用简单的溶剂热-沉淀-煅烧法制备了CdS纳米粒子修饰Bi-2 MoO 6微球的CdS/Bi 2 MoO 6异质结。1.0CdS/Bi 2 MoO 6具有更强的光吸收能力和最高的光催化活性，对左氧氟沙星（LEV）的降解效率分别是CdS和Bi 2 MoO 6的6.2倍和12.6倍。CdS/Bi-2 MoO 6在循环试验中非常稳定，没有观察到明显的活性下降和微观结构变化。结果表明，CdS的引入增强了异质结的光吸收能力，有效地促进了载流子的分离，从而提高了异质结的光催化性能。这项工作表明，花状CdS/Bi 2 MoO 6是一种优良的光催化剂，用于有效地去除LEV抗生素。
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/Bi2MoO6 heterojunction with CdS nanoparticles decorated Bi-2 MoO6 microspheres has been obtained by a simple solvothermal-precipitation-calcination method. 1.0CdS/Bi2MoO6 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 Bi2MoO6. CdS/Bi-2 MoO6 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/Bi2MoO6 is an excellent photocatalyst for the efficient removal of the LEV antibiotic.