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Simultaneously activating molecular oxygen and surface lattice oxygen on Pt/TiO2 for low-temperature CO oxidation.
Zhang, Tengfei; Zheng, Peng; Gao, Jiajian; Liu, Xiaolong; Ji, Yongjun; Tian, Junbo; Zou, Yang; Sun, Zhiyi; Hu, Qiao; Chen, Guokang; Chen, Wenxing; Liu, Xi; Zhong, Ziyi; Xu, Guangwen; Zhu, Tingyu; Su, Fabing.
Afiliación
  • Zhang T; Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.
  • Zheng P; Key Laboratory on Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang, China.
  • Gao J; Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Jurong Island, Singapore.
  • Liu X; Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China. liuxl@ipe.ac.cn.
  • Ji Y; School of Light Industry, Beijing Technology and Business University, Beijing, China. yjji@btbu.edu.cn.
  • Tian J; Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.
  • Zou Y; Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.
  • Sun Z; Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China.
  • Hu Q; School of Chemistry and Chemical Engineering, in situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai, People's Republic of China.
  • Chen G; School of Chemistry and Chemical Engineering, in situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai, People's Republic of China.
  • Chen W; Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China. wxchen@bit.edu.cn.
  • Liu X; School of Chemistry and Chemical Engineering, in situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai, People's Republic of China. liuxi@sjtu.edu.cn.
  • Zhong Z; Department of Chemical Engineering, and Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion (MATEC), Guangdong Technion Israel Institute of Technology (GTIIT), Shantou, China.
  • Xu G; Key Laboratory on Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang, China.
  • Zhu T; Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang, China.
  • Su F; Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China. tyzhu@ipe.ac.cn.
Nat Commun ; 15(1): 6827, 2024 Aug 09.
Article en En | MEDLINE | ID: mdl-39122681
ABSTRACT
Developing high-performance Pt-based catalysts with low Pt loading is crucial but challenging for CO oxidation at temperatures below 100 °C. Herein, we report a Pt-based catalyst with only a 0.15 wt% Pt loading, which consists of Pt-Ti intermetallic single-atom alloy (ISAA) and Pt nanoparticles (NP) co-supported on a defective TiO2 support, achieving a record high turnover frequency of 11.59 s-1 at 80 °C and complete conversion of CO at 120 °C. This is because the coexistence of Pt-Ti ISAA and Pt NP significantly alleviates the competitive adsorption of CO and O2, enhancing the activation of O2. Furthermore, Pt single atom sites are stabilized by Pt-Ti ISAA, resulting in distortion of the TiO2 lattice within Pt-Ti ISAA. This distortion activates the neighboring surface lattice oxygen, allowing for the simultaneous occurrence of the Mars-van Krevelen and Langmuir-Hinshelwood reaction paths at low temperatures.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: China
Texto completo
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XML
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: China