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Br vacancy engineering in Cs3Bi2Br9 for photocatalytic NO oxidation under visible light.
Chen, Jingwen; Wu, Menglin; Ni, Jiupai; Ni, Chengsheng.
Afiliación
  • Chen J; College of Resources and Environment, Southwest University, Chongqing, 400715, China.
  • Wu M; College of Resources and Environment, Southwest University, Chongqing, 400715, China.
  • Ni J; College of Resources and Environment, Southwest University, Chongqing, 400715, China.
  • Ni C; National Base of International S&T Collaboration On Water Environmental Monitoring and Simulation in Three Gorges Reservoir Region, Chongqing, 400716, China.
Environ Sci Pollut Res Int ; 30(19): 56188-56197, 2023 Apr.
Article en En | MEDLINE | ID: mdl-36917387
Photocatalysis using the visible light of the sun is an environmentally friendly method of eliminating the NOx pollutant from the ambient air. Although Cs3Bi2Br9, a semiconductor with a band gap of 2.54 eV, may be a strong absorber of visible light, its photocatalysis towards the abatement of NOx is unknown. In this study, Cs3Bi2-xPbxBr9-x (0 ≤ x ≤ 0.0789) are used for the photocatalytic oxidation of NOx. A significant NO oxidation efficiency (80%) is observed over Cs3Bi2-xPbxBr9-x (x = 0.0443) under visible light, which is attributable to the Br vacancy (VBr) brought about by Pb2+ doping. The presence of VBr increased the ionic selectivity of in the oxidized NO. At higher Pb doping level, two HONOs adsorbed on the VBr, linked, and then reduced by hot electrons to produce N2O22-. The di-azo coupling could passivate the activation of NO on the VBr. This work advances the defect engineering of halide for the photo-driving solid-gas reaction in air.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bismuto / Plomo Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bismuto / Plomo Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania