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Molten Salt-Derived RuO2 Nanocrystals and Nanowires: Unveiling Correlations of Morphology, Microstructure, and Electrocatalytic Performance.
Zhang, Qiang; Qian, Zhenghua; Wei, Yao; Liu, Xueyang; Zhang, Pengfei; Gao, Ying; Qiao, Yanbo; Liu, Xiaofeng.
Afiliación
  • Zhang Q; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Sanghai 201800, People's Republic of China.
  • Qian Z; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Sanghai 201800, People's Republic of China.
  • Wei Y; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Liu X; Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.
  • Zhang P; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Sanghai 201800, People's Republic of China.
  • Gao Y; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Qiao Y; School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
  • Liu X; School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
Inorg Chem ; 62(44): 18257-18266, 2023 Nov 06.
Article en En | MEDLINE | ID: mdl-37867365
ABSTRACT
Ruthenium oxide (RuO2), due to its comparable binding energy with *H and cost-effectiveness against Pt, has emerged as a pivotal electrocatalyst for oxygen evolution reaction (OER). In the present study, RuO2 nanocrystals (NCs) and nanowires (NWs) were obtained by a molten salt process and the morphology, crystal structure, and local bonding features were examined by using electron microscopy and X-ray absorption spectroscopy. From the electrochemical measurement, both RuO2 NCs and NWs exhibit favorable stability and activity toward oxygen evolution reaction in an alkali medium, althought NCs exhibit higher activity, which is likely attributed to the larger surface area and the high local structural disorder. The theoretical calculation reveals that RuO2 NWs with a primary (110) orientation show a higher overpotential due to its d-band center's proximity to the Fermi level versus (101). The present work suggests that the molten salt process could be an efficient method for producing metal oxide catalysts with tailorable geometry and performances.

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Inorg Chem Año: 2023 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Inorg Chem Año: 2023 Tipo del documento: Article