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Simultaneous Defect Passivation and Co-catalyst Engineering Leads to Superior Photocatalytic Hydrogen Evolution on Metal Halide Perovskites.
Xu, Ting; Xie, Yuxin; Qi, Shengliang; Zhang, Hefeng; Ma, Weiguang; Wang, Junhui; Gao, Yuying; Wang, Lianzhou; Zong, Xu.
Afiliación
  • Xu T; Dalian Maritime University, Marine Engineering College, No.1 Linghai Road, 116026, Dalian, CHINA.
  • Xie Y; Dalian Institute of Chemical Physics, State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, CHINA.
  • Qi S; Dalian Maritime University, Marine Engineering College, CHINA.
  • Zhang H; Dalian Maritime University, Marine Engineering College, CHINA.
  • Ma W; Dalian Maritime University, Marine Engineering College, CHINA.
  • Wang J; Dalian Institute of Chemical Physics, State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Dalian Institute of Chemical Physics, 116026, CHINA.
  • Gao Y; Dalian Institute of Chemical Physics, State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, CHINA.
  • Wang L; The University of Queensland, School of Chemical Engineering and AIBN, St Lucia, 4072, Brisbane, AUSTRALIA.
  • Zong X; Dalian Maritime University, Marine Engineering College, CHINA.
Angew Chem Int Ed Engl ; : e202409945, 2024 Jul 19.
Article en En | MEDLINE | ID: mdl-39031539
ABSTRACT
Metal halide perovskites (MHPs) have emerged as attractive candidates for producing green hydrogen via photocatalytic pathway. However, the presence of abundant defects and absence of efficient hydrogen evolution reaction (HER) active sites on MHPs seriously limit the solar-to-chemical (STC) conversion efficiency. Herein, to address this issue, we present a bi-functionalization strategy through decorating MHPs with a molecular molybdenum-sulfur-containing co-catalyst precursor. By virtue of the strong chemical interaction between lead and sulfur and the good dispersion of the molecular co-catalyst precursor in the deposition solution, a uniform and intimate decoration of the MHPs surface with lead sulfide (PbS) and amorphous molybdenum sulfide (MoSx) co-catalysts is obtained simultaneously. We show that the PbS co-catalyst can effectively passivate the Pb-related defects on the MHPs surface, thus retarding the charge recombination and promoting the charge transfer efficiency significantly. The amorphous MoSx co-catalyst further promotes the extraction of photogenerated electrons from MHPs and facilitates the HER catalysis. Consequently, drastically enhanced photocatalytic HER activities are obtained on representative MHPs through the synergistic functionalization of PbS and MoSx co-catalysts. A solar-to-chemical (STC) conversion efficiency of ca. 4.63% is achieved on the bi-functionalized FAPbBr3-xIx, which is among the highest values reported for MHPs.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania