电化学CO2的双原子催化剂中的协同效应和活动描述符 减少:一个计算洞察力
Yusong Ding1,2, Dingran Duan1, Mingwei Wu1
1College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China.
Langmuir : the ACS journal of surfaces and colloids
|December 8, 2025
概括
在N-化石墨烯上的双原子催化剂显示出电化学二氧化碳减排的希望. DFT选确定了CO,甲醇,酸和甲生产的顶级催化剂,为催化剂设计提供了一个框架.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 电化学二氧化碳减排 (CO2RR) 对于可持续能源和碳减排至关重要.
- 在N-化石墨烯上的双原子催化剂 (DAC) 为CO2RR提供了一种新的方法.
研究的目的:
- 系统地研究55种同质和异质二原子催化剂在N-化石墨烯上.
- 确定各种CO2RR产品的高性能DAC.
- 为基于石墨烯的先进电催化剂提供设计框架.
主要方法:
- 密度函数理论 (DFT) 的计算.
- 在二原子配置 (M-M和M1-M2) 中选10种过渡金属.
- 对d波段中心,贝德电荷和吉布斯自由能量等描述符的分析.
主要成果:
- 确定了CO/CH3OH (Cu-Cr,Ni-Pd,Pd-Pd),HCOOH (*COOH通路:Co-Co,Fe-Fe,Cu-Cr,Co-Cu; *OCHO通路:Co-Ni,Cu-Cu,Co-Pd) 和CH4 (*CO通路:Cu-V,Cr,V-Pd; *HCOOH通路:Fe-Pd,Mn-Cu,Cu-Cr,V-Pd) 的顶级DACs,这些DACs的含量包括:
- 已经证明了协同效应,最佳的中间吸附和低能量的障碍.
- 与电子描述符相关联的催化剂性能.
结论:
- 在CO2RR中建立了DAC的结构-活动关系.
- 突出了特定的DAC在选择性产品生成方面的潜力.
- 提供了一个计算框架,用于设计高效的石墨烯基电催化剂,用于二氧化碳转化.
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