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Highly efficient hydrogen peroxide electrosynthesis on oxidized carbon nanotubes by thermally activated-persulfate
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作者 Wendong Liu Changlong Li +3 位作者 guanqing ding Guangbin Duan Yuanyuan Jiang Yizhong Lu 《Journal of Materiomics》 SCIE 2022年第1期136-143,共8页
Electrochemical synthesis of hydrogen peroxide(H_(2)O_(2))through two-electron oxygen reduction represents an attractive alternative for on-site H_(2)O_(2) generation.Here,we develop a facile thermally activatedpersul... Electrochemical synthesis of hydrogen peroxide(H_(2)O_(2))through two-electron oxygen reduction represents an attractive alternative for on-site H_(2)O_(2) generation.Here,we develop a facile thermally activatedpersulfate approach to obtain oxidized carbon nanotubes(O-CNTs-x,x represents oxidation time)with enhanced H_(2)O_(2) electrosynthesis performance.Electrochemical studies have demonstrated that the optimized O-CNTs-6(i.e.,oxidation time is 6 h)could deliver a sustained high selectivity of around 92%for H_(2)O_(2) over a wide voltage window in 0.1 mol/L KOH and a high H_(2)O_(2) production rate of 296.84 mmol/L g^(-1) cat h^(-1).Compared with pristine CNTs,the enhanced catalytic activity primarily stems from the newly-generated oxygen-containing functional groups and some defects created on the surface of O-CNTs-x.Importantly,the proposed oxidation process is proved to be valid for promoting H_(2)O_(2) electrosynthesis performance of the Ketjen black.This study provides an universal oxidation method to obtain highly active carbon-based catalysts and initiates new opportunities for the exploration of highperformance electrosynthesis H_(2)O_(2) catalysts. 展开更多
关键词 PERSULFATE Oxygen-containing functional group Defects Oxygen reduction H_(2)O_(2)production
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