Enhanced electrocatalytic performance of TiO 2 nanoparticles by Pd doping toward ammonia synthesis under ambient conditions.

Autor: Chen HJ; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China. wy@uestc.edu.cn., Deng GR; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China. wy@uestc.edu.cn., Feng ZS; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China. wy@uestc.edu.cn.; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, P. R. China., Xu ZQ; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China. wy@uestc.edu.cn., Yang MY; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China. wy@uestc.edu.cn., Huang Y; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China. wy@uestc.edu.cn., Peng Q; School of Basic Medical Science, Chongqing Medical University, Chongqing 400016, P. R. China., Li T; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China. wy@uestc.edu.cn., Wang Y; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China. wy@uestc.edu.cn.; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, P. R. China.
Jazyk: angličtina
Zdroj: Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2022 Mar 03; Vol. 58 (19), pp. 3214-3217. Date of Electronic Publication: 2022 Mar 03.
DOI: 10.1039/d1cc06778h
Abstrakt: The traditional Haber-Bosch process in industry to produce NH 3 leads to excessive CO 2 emissions and a large amount of energy consumption. Ambient electrochemical N 2 reduction is emerging as a green and sustainable alternative method to convert N 2 to NH 3 , but is in sore need of efficient and stable electrocatalysts. Herein, we propose using Pd-doped TiO 2 nanoparticles as a high-efficiency electrocatalyst to synthesize NH 3 under ambient conditions. The Pd-TiO 2 catalyst delivers a large NH 3 yield (17.4 μg h -1 mg cat. -1 ) and a high faradaic efficiency (12.7%) at -0.50 V versus reversible hydrogen electrode in a neutral electrolyte, outperforming most Pd- and Ti-based electrocatalysts recently reported for N 2 reduction. Most importantly, it also demonstrates extraordinary long-term electrochemical stability.
Databáze: MEDLINE
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