电催化剂
纳米片
催化作用
材料科学
氮气
兴奋剂
动力学
金属
质子化
非金属
无机化学
化学
纳米技术
物理化学
电化学
电极
有机化学
物理
离子
量子力学
冶金
光电子学
作者
Lulu Wen,Qingfang Chang,Xilin Zhang,Xinyang Li,Shichuan Zhong,Pan Zeng,Syed Shoaib Ahmad Shah,Xiaoye Hu,Weiping Cai,Yue Li
出处
期刊:Small
[Wiley]
日期:2024-09-30
标识
DOI:10.1002/smll.202407594
摘要
Abstract Tuning the adsorption energy of nitrogen intermediates and lowering the reaction energy barrier is essential to accelerate the kinetics of nitrogen reduction reaction (NRR), yet remains a great challenge. Herein, the electronic structure of WS 2 is tailored based on a metal and nonmetal dual‐doping strategy (denoted Fe, F‐WS 2 ) to lower the d ‐band center of W in order to optimize the adsorption of nitrogen intermediates. The obtained Fe, F‐WS 2 nanosheet catalyst presents a high Faradic efficiency (FE) of 22.42% with a NH 3 yield rate of 91.46 µg h −1 mg cat. −1 . The in situ characterizations and DFT simulations consistently show the enhanced activity is attributed to the downshift of the d ‐band center, which contributes to the rate‐determining step of the second protonation to form N 2 H 2 * key intermediates, thereby boosting the overall nitrogen electrocatalysis reaction kinetics. This work opens a new avenue to enhanced electrocatalysis by modulating the electronic structure and surrounding microenvironment of the catalytic metal centers.
科研通智能强力驱动
Strongly Powered by AbleSci AI