Disordered Au Nanoclusters for Efficient Ammonia Electrosynthesis
學年 111
學期 1
出版（發表）日期 2023-01-22
作品名稱 Disordered Au Nanoclusters for Efficient Ammonia Electrosynthesis
作品名稱（其他語言）
著者 Wang, Hsiao-tsu
單位
出版者
著錄名稱、卷期、頁數 ChemSusChem 16,　e202201385
摘要 The electrochemical nitrogen (N2) reduction reaction (N2RR) under mild conditions is a promising and environmentally friendly alternative to the traditional Haber-Bosch process with high energy consumption and greenhouse emission for the synthesis of ammonia (NH3), but high-yielding production is rendered challenging by the strong nonpolar N≡N bond in N2 molecules, which hinders their dissociation or activation. In this study, disordered Au nanoclusters anchored on two-dimensional ultrathin Ti3C2Tx MXene nanosheets are explored as highly active and selective electrocatalysts for efficient N2-to-NH3 conversion, exhibiting exceptional activity with an NH3 yield rate of 88.3±1.7 μg h−1 mgcat.−1 and a faradaic efficiency of 9.3±0.4 %. A combination of in situ near-ambient pressure X-ray photoelectron spectroscopy and operando X-ray absorption fine structure spectroscopy is employed to unveil the uniqueness of this catalyst for N2RR. The disordered structure is found to serve as the active site for N2 chemisorption and activation during the N2RR process.
關鍵字 ammonia;electrocatalysis;gold;MXenes;nanoclusters
語言 en
ISSN
期刊性質 國外
收錄於 SCI SSCI
產學合作
通訊作者
審稿制度 是
國別 TWN
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/124621 )