BiOCl/ultrathin polyaniline core/shell nanosheets with a sensitization mechanism for efficient visible-light-driven photocatalysis

  • Yonghua Tang (唐永华)
  • Peng Zhou (周鹏)
  • Kai Wang (王凯)
  • Fei Lin (林斐)
  • Jianping Lai (赖建平)
  • Yuguang Chao (晁玉广)
  • Hongxing Li (李红星)
  • Shaojun Guo (郭少军)
Articles
  • 8 Downloads

Abstract

Photocatalytic technology holds great promise in renewable energy and environmental protection. Herein, we report the synthesis of a class of polyaniline-sensitized BiOCl core/shell nanosheets with visible-light photocatalytic activity by a one-step oxidative polymerization method and show how the hybrid nanosheet boosts the photocatalytic activity and stability for degradation of Rhodamine B (RhB). In this unique structure, the ultrathin polyaniline (PANI) as a shell with the thickness of about 1–2 nm, can widen the response of the catalyst to visible light to boost photocatalysis and the BiOCl core can promote the separation of photogenerated carriers from the PANI. We demonstrate that the optimized BiOCl/PANI core/shell photocatalyst shows nearly three times higher photocatalytic activity for the degradation of RhB than pure BiOCl and also shows high stability. This work provides a new strategy for the design of a highly efficient hybrid photocatalyst driven by visible light.

Keywords

BiOCl core/shell nanosheets photocatalysis polyaniline 

一种光驱动下具有敏化性能的氯氧化铋/超薄聚苯胺核壳纳米片结构

摘要

光催化技术在可再生能源和环境保护方面有巨大的潜力. 本文通过一步氧化聚合法合成了一种超薄聚苯胺壳敏化氯氧化铋核纳米片结构. 该结构中约1–2纳米厚的超薄聚苯胺壳可以促进催化剂对可见光的响应, 氯氧化铋核可以促进聚苯胺中光生载流子的分离, 在可见光驱动下对于降解罗丹明B具有较高的光催化活性和稳定性. 优化后的氯氧化铋/超薄聚苯胺核壳催化剂的光催化降解罗丹明B的活性比纯氯氧化铋高出近三倍, 且稳定性更高. 本工作为设计可见光驱动的高效混合光催化剂提供了一种新的策略.

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (51772255), Hunan Natural Science Foundation (2016JJ3123), the National Key Research and Development Program of China (2016YFB0100201) and the start-up supports from Peking University and Young Thousand Talented Program.

Supplementary material

40843_2018_9284_MOESM1_ESM.pdf (1 mb)
BiOCl/ultrathin polyaniline core/shell nanosheets with a sensitization mechanism for efficient visible-light-driven photocatalysis

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Yonghua Tang (唐永华)
    • 1
    • 2
  • Peng Zhou (周鹏)
    • 2
  • Kai Wang (王凯)
    • 2
  • Fei Lin (林斐)
    • 2
    • 3
  • Jianping Lai (赖建平)
    • 2
  • Yuguang Chao (晁玉广)
    • 2
  • Hongxing Li (李红星)
    • 1
  • Shaojun Guo (郭少军)
    • 2
  1. 1.School of Physics and Optoelectronic EngineeringXiangtan UniversityXiangtanChina
  2. 2.Department of Materials Science and Engineering, College of EngineeringPeking UniversityBeijingChina
  3. 3.School of Materials Science and EngineeringOcean University of ChinaQingdaoChina

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