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Ag@TiO 2 as an Efficient Electrocatalyst for N 2 Fixation to NH 3 under Ambient Conditions
Author(s) -
Li Xue,
Cao Yang,
Xu Tong,
Luo Yonglan,
Li Tingshuai,
Zhao Haitao,
Lu Siyu,
Shi Xifeng,
Asiri Abdullah M.,
Hu Jianming,
Liu Qian,
Sun Xuping
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101069
Subject(s) - electrocatalyst , faraday efficiency , electrochemistry , electrode , reversible hydrogen electrode , materials science , chemistry , inorganic chemistry , chemical engineering , nanotechnology , working electrode , engineering
With the use of traditional Haber‐Bosch N 2 fixation, a huge amount of CO 2 emission bring a huge burden to the environment. Electrochemical N 2 reduction provides an environmental‐friendly and sustainable alternative to NH 3 synthesis at ambient conditions. Herein, we report our recent experimental finding that Ag composited with TiO 2 can greatly improve the N 2 reduction reaction performance of TiO 2 toward ambient conversion. In 0.1 M Na 2 SO 4 (pH=7), such electrocatalyst achieves a large NH 3 yield rate of 14.88 μg h −1 mg −1 cat. with a Faradaic efficiency of 6.2 % at −0.70 V vs. reversible hydrogen electrode. Besides, it also demonstrates high electrochemical and structural stability for NH 3 generation.