在单原子和双原子催化中,通过p-d轨道杂交,增强了酸还原的电催化活性
Mingqiang Liu1, Yi Yang1, Xiaoqing Gong1
1School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China. xiekefeng@mail.lzjtu.cn.
Nanoscale
|January 22, 2026
概括
研究人员开发了新的双原子催化剂,以在温和条件下将酸有效地用电催化剂化为酸. Co-Bi 催化剂表现出卓越的活性和选择性,为绿色化学合成和能量储存铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 计算化学计算化学
背景情况:
- 传统的氨酸合成涉及高温,高压酸化,这给环境和能源带来了挑战.
- 在温和条件下开发高效的电催化剂,以化在温和条件下,对于绿色化学和储能至关重要.
研究的目的:
- 设计和选单原子催化剂 (SAC) 和双原子催化剂 (DAC) 用于电催化化.
- 研究酸的电催化还原机制,并确定高活性和选择性的最佳催化剂.
主要方法:
- 密度函数理论 (DFT) 的计算被用来选14种由添加的石墨烯支持的过渡金属SAC.
- 一系列基于Co的DAC (Co-M-N6V4-G) 被设计并评估了协同效应.
- 分析包括结构稳定性,自由能图,限制电压和演变反应评估.
主要成果:
- 在选的SAC中, SAC (Co SAC) 具有最高的催化活性和选择性.
- 该Co-Bi-N6V4-G DAC表现出卓越的催化性能,稳定性和选择性.
- 电子结构分析显示,Co-Bi-N6V4-G中的p-d轨道杂交优化了酸相互作用.
结论:
- 双原子催化剂Co-Bi-N6V4-G是高效和选择性的电催化酸化的一个有希望的候选者.
- 这项研究为基于原子轨道相互作用的DAC设计提供了一种新的理论方法.
- 这些发现有助于推进绿色合成方法和电化学储能技术的发展.
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