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In Situ Characterization of Oxygen Evolution Electrocatalysis of Silver Salt Oxide on a Wireless Nanopore Electrode.
Cui, Ling-Fei; Ying, Yi-Lun; Yu, Ru-Jia; Ma, Hui; Hu, Ping; Long, Yi-Tao.
Afiliação
  • Cui LF; School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, P. R. China.
  • Ying YL; State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing210023, P. R. China.
  • Yu RJ; Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing210023, P. R. China.
  • Ma H; State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing210023, P. R. China.
  • Hu P; Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing210023, P. R. China.
  • Long YT; State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing210023, P. R. China.
Anal Chem ; 94(43): 15033-15039, 2022 11 01.
Article em En | MEDLINE | ID: mdl-36255225
Silver salt oxide shows superior oxidation ability for the applications of superconductivity, sterilization, and catalysis. However, due to the easy decomposition, the catalytic properties of silver salt oxide are difficult to characterize by conventional methods. Herein, we used a closed-type wireless nanopore electrode (CWNE) to in situ and real-time monitor the electrocatalytic performance of Ag7NO11 in the oxygen evolution reaction. The real-time current recording revealed that the deposited Ag7NO11 on the CWNE tip greatly enhanced the oxidative capacity of the electrode, resulting in water splitting. The statistical event analysis reveals the periodic O2 bubble formation and dissolution at the Ag7NO11 interface, which ensures the characterization of the oxygen evolution electrocatalytic process at the nanoscale. The calculated kcat and Markov chain modeling suggest the anisotropy of Ag7NO11 at a low voltage may lead to multiple catalytic rates. Therefore, our results demonstrate the powerful capability of CWNE in direct and in situ characterization of gas-liquid-solid catalytic reactions for unstable catalysts.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Oxigênio / Nanoporos Idioma: En Revista: Anal Chem Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Oxigênio / Nanoporos Idioma: En Revista: Anal Chem Ano de publicação: 2022 Tipo de documento: Article