协调工程双原子催化剂与逆三明治结构的CO2减少:一个联合DFT和机器学习研究研究
Jingnan Su1, Zhiheng Ji2, Dan Jiang3
1Research Center for Quantum Physics and Technologies, School of Physical Science and Technology, Inner Mongolia University, Hohhot, 010021, China.
我们开发了一个DFT-ML框架,以发现用于减少二氧化碳的先进铜催化剂. 这加快了寻找有效的催化剂的速度,大大提高了CO2RR的性能,而不是现有的基准.
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.
- 计算化学的计算化学
背景情况:
- 电催化剂对于二氧化碳还原反应 (CO2RR) 是至关重要的.
- 协调工程为增强催化剂性能提供了一条途径.
- 发现高效的催化剂需要先进的计算方法.
研究的目的:
- 加速发现高活性和选择性的基于铜的二原子催化剂 (DACs) 用于CO2RR.
- 建立一个强大的密度功能理论 (DFT) - 机器学习 (ML) 框架用于催化剂选.
- 通过多步骤协议识别具有逆三明治结构的有前途的DAC.
主要方法:
- 使用了DFT-ML框架,结合了密度函数理论计算和机器学习模型.
- 实施了四步选方案:稳定性,二氧化碳吸附性,选择性和活性.
- 开发了一个可解释的XGBoost模型,基于预测催化活性的五个关键描述符.
主要成果:
- 从162个结构中确定了18个有前途的基于Cu的DAC候选物,表现优于Cu111和Cu-N4.
- 选基于Ag和基于Cu的DAC与混合C/N/B协调,分别产生9个和153个候选物.
- DFT验证证实了开发的ML模型的可靠性和预测能力.
结论:
- 协调工程的DAC显示了高效CO2RR的巨大潜力.
- 开发的DFT-ML策略是加速催化剂发现的强大和可转移的方法.
- 这项工作为设计下一代二氧化碳转化电催化剂铺平了道路.
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