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热电子和界面水分子排序在等离子增强固定的同时机制

Shaoce Zhang¹, Dong Chen¹, Peigang Chen¹

¹Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China.

Advanced materials (Deerfield Beach, Fla.)

|January 18, 2024

概括

局部表面等离子体共振 (LSPR) 通过削弱键和调整水分子来增强减小反应 (NRR). 这与热电子一起,提高了催化性能和氨产量.

科学领域:

催化剂是一种催化剂.
材料科学材料科学材料科学
电化学电化学电化学

背景情况:

局部表面等离子体共振 (LSPR) 对于催化是至关重要的,主要是通过热电子生成.
在催化机制中LSPR诱导的电场的作用,特别是对于降解反应 (NRR),需要进一步阐明.

研究的目的:

调查一种新的LSPR机制,涉及NRR的电场对接口水的影响.
为了证明AuCu五纳米颗粒在利用LSPR提高固化的有效性.

主要方法:

合成具有强烈的光吸收和电场生成能力的AuCu五边形纳米粒子.
在现场拉曼光谱和理论计算来探测分子层面的界面过程.
电化学测量以评估氨合成的催化性能.

主要成果:

发现LSPR诱导的电场会削弱键,并在固体-液体界面对水分子进行排序.
AuCu五边形纳米粒子对NRR表现出高性能,NH3产量为52.09μg h-1cm-2和FE为45.82%在-0.20V.
顺序的界面水和热电子的协同效应显著促进了电子转移和催化活性.

结论:

为NRR确定了一种新的LSPR机制,该机制涉及对界面水的电场调制.
AuCu五边形纳米粒子作为一个有效的平台来证明这种机制,并实现高催化性能.
这些发现提供了一种新的策略,通过通过LSPR控制界面水结构来优化催化反应.

关键词:

AuCu 五角形纳米粒子局部化的表面等离子体共振.固化的方法固化的方法精心排序的水分子.

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