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Synthesis of Sulfur Vacancy-Bearing In2S3/CuInS2 Microflower Heterojunctions via a Template-Assisted Strategy and Cation-Exchange Reaction for Photocatalytic CO2 Reduction.
Liao, Aizhen; Liu, Zhengchu; Wei, Yiqing; Xie, Qinghua; Kong, Ting; Zeng, Maolin; Wang, Wenpeng; Yang, Chao; Zhang, Linji; Xu, Yonggang; Zhou, Yong; Zou, Zhigang.
Afiliación
  • Liao A; School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
  • Liu Z; National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing 210093, China.
  • Wei Y; National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing 210093, China.
  • Xie Q; School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
  • Kong T; School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
  • Zeng M; School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
  • Wang W; School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
  • Yang C; School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
  • Zhang L; School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
  • Xu Y; School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
  • Zhou Y; National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing 210093, China.
  • Zou Z; Ecomaterials and Renewable Energy Research Center, School of Physics, Nanjing University, Nanjing 210093, China.
Molecules ; 29(14)2024 Jul 16.
Article en En | MEDLINE | ID: mdl-39064912
ABSTRACT
The synthesis of the accurate composition and morphological/structural design of multielement semiconductor materials is considered an effective strategy for obtaining high-performance hybrid photocatalysts. Herein, sulfur vacancy (Vs)-bearing In2S3/CuInS2 microflower heterojunctions (denoted Vs-In2S3/CuInS2) were formed in situ using In2S3 microsphere template-directed synthesis and a metal ion exchange-mediated growth strategy. Photocatalysts with flower-like microspheres can be obtained using hydrothermally synthesized In2S3 microspheres as a template, followed by Ostwald ripening growth during the metal cation exchange of Cu+ and In3+. The optimal heterostructured Vs-In2S3/CuInS2 microflowers exhibited CO and CH4 evolution rates of 80.3 and 11.8 µmol g-1 h-1, respectively, under visible-light irradiation; these values are approximately 4 and 6.8 times higher than those reported for pristine In2S3, respectively. The enhanced photocatalytic performance of the Vs-In2S3/CuInS2 catalysts could be attributed to the synergistic effects of the following factors (i) the constructed heterojunctions accelerate charge-carrier separation; (ii) the flower-like microspheres exhibit highly uniform morphologies and compositions, which enhance electron transport and light harvesting; and (iii) the vs. may trap excited electrons and, thus, inhibit charge-carrier recombination. This study not only confirms the feasibility of the design of heterostructures on demand, but also presents a simple and efficient strategy to engineer metal sulfide photocatalysts with enhanced photocatalytic performance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Molecules Asunto de la revista: BIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
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: Molecules Asunto de la revista: BIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza