Open AccessInsights into Tuning of Mo‐Based Structures toward Enhanced Electrocatalytic Performance of Nitrogen‐to‐Ammonia Conversion
Author(s) -
Liu Guanyu,
Wang Jiong
Publication year - 2022
Publication title -
advanced energy and sustainability research
Language(s) - English
Resource type - Journals
ISSN - 2699-9412
DOI - 10.1002/aesr.202100179
Subject(s) - catalysis , ammonia production , chemisorption , ammonia , redox , electrochemistry , nitrogen , nitrogenase , renewable energy , chemistry , selectivity , materials science , nanotechnology , chemical engineering , combinatorial chemistry , inorganic chemistry , nitrogen fixation , electrode , organic chemistry , electrical engineering , engineering
Ammonia is commonly produced via the Haber−Bosch process, which is energy intensive with emission of substantial greenhouse gases. As one alternative method, electrochemical nitrogen reduction reaction (NRR) can be driven by the renewable energy and realized at ambient conditions for sustainable NH 3 synthesis. However, the reaction suffers from high overpotentials and low selectivity due to the potential overlap with competing proton reduction. As inspired by the natural nitrogenase enzymes, Mo sites are particularly investigated to exhibit the potential for catalyzing NRR. Herein, the recent progresses in modifying Mo‐based catalysts toward enhanced NRR performance are discussed. The modification strategies vary from tuning of metal cores, coordination spheres, and assembled structures. The modification strategies can both efficiently tune the chemisorption energy and geometry of N 2 , as well as hydrogenated N derivatives on the Mo sites.