Sustainable Environment Research (Feb 2022)

Enhanced photocatalytic removal of nitric oxide over Ag-decorated ZnSn(OH)6 microcubes

  • Minh-Thuan Pham,
  • Nguyen Thi Van,
  • Truc Mai Thi Nguyen,
  • Hong-Huy Tran,
  • Hieu Trung Nguyen,
  • Jheng-Jie Jiang,
  • Sheng-Jie You,
  • Ya-Fen Wang

DOI
https://doi.org/10.1186/s42834-022-00125-y
Journal volume & issue
Vol. 32, no. 1
pp. 1 – 12

Abstract

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Abstract Presently, most of the population has been facing a string of severe air pollution problems that include the intensive emission of nitric oxide (NO), which requires a practical approach to sustain our living conditions. Herein, Ag nanoparticles (Ag NPs)-decorated ZnSn(OH)6 microcubes (Ag:cZHS) photocatalysts are synthesized and used for photocatalytic NO removal under solar light activation. The properties of the newly obtained photocatalysts are comprehensively characterized by a series of typical methods. The NO removal performance over the c:ZHS photocatalysts was increased markedly upon being combined with Ag NPs because of the surface plasmon resonance effect. The contribution of electron (e−), hole (h+), hydroxyl radical (•OH), and oxygen radicals (•O2) was investigated through trapping tests and electron spin resonance analysis. Also, the by-products and apparent quantum efficiency of the photocatalysts were thoroughly studied.

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