期刊
CHEMICAL COMMUNICATIONS
卷 58, 期 22, 页码 3669-3672出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2cc00856d
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This study reports that a TiO2-x nanobelt array with oxygen vacancies can convert nitrite into ammonia with high electrocatalytic efficiency and yield in alkaline solution.
Electrocatalytic nitrite reduction not only holds significant potential in the control of nitrite contamination in the natural environment, but also is an attractive approach for sustainable ammonia synthesis. In this communication, we report that a TiO2-x nanobelt array with oxygen vacancies on a titanium plate is able to convert nitrite into ammonia with a high faradaic efficiency of 92.7% and a large yield of 7898 mu g h(-1) cm(-2) in alkaline solution. This monolithic catalyst also shows high durability with the maintenance of its catalytic activity for 12 h. Theoretical calculations further reveal the critical role of oxygen vacancies in nitrite electroreduction.
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