4.7 Article

Purposefully designing Co-S-codoping in hierarchical BiOCl architectures and elucidating the mechanism for enhanced visible-light-driven photocatalytic activity

Journal

APPLIED SURFACE SCIENCE
Volume 604, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.apsusc.2022.154582

Keywords

BiOCl; Codoping; Cobalt; Sulfur; Photocatalytic activity

Funding

  1. National Science Foundation of China [51834009, 51801151]
  2. Natural Science Foundation of Shaanxi Province [2020JZ-47]
  3. China Postdoctoral Science Foundation [2018M633643XB]
  4. Yunnan Chihong Zn & Ge Co., Ltd Nonferrous Metal Electrodeposition Technology Innovation Team of Yunnan Province [201905E160007]
  5. Hundred Talent Program of Shaanxi Province

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Simultaneous doping of Co and S species into hierarchical BiOCl architectures (BOC-Co-S) improves the photocatalytic degradation performance under visible light.
Simultaneously doping metal and nonmetal species into BiOCl photocatalysts is an efficient way to tailor the valence band and conduction band for enhanced both solar light harvesting and photocharge separation. However, the investigation on metal-nonmetal codoping of BiOCl photocatalysts is still less so far. Herein, the codoping of Co and S species into hierarchical BiOCl architectures (denoted as BOC-Co-S) is realized by a simple one-pot hydrothermal method. The as-prepared BOC-Co-S samples demonstrated remarkably high-efficient visible-light-driven photocatalytic performances toward the degradation of Rhodamine B and tetracycline compared with the Co-doped BiOCl, S-doped BiOCl and pure BiOCl samples. The improved photodegradation activities of BOC-Co-S samples can be ascribed to the increased solar light harvesting, efficient charge separation and sufficient activity sites derived from Co-S codoping. This study might provide a promising strategy to further explore simple and economic organic-free routes for the development of high-active bismuth oxyhalides-based photocatalysts.

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