相关实验视频

Updated: Sep 16, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

对于二金属合金催化剂的高通量选和DFT特性,用于降解反应

Mehdi Shamekhi^1,2, Arash Toghraei³, Daniel Guay²

¹Department of Physics, Concordia University, Montreal, Quebec, Canada.

Physical chemistry chemical physics : PCCP

|July 8, 2025

概括

开发用于电化学降解反应 (NRR) 的新催化剂对于可持续的氨生产至关重要. 机器学习有效选双金属合金,识别具有增强催化活性和选择性的有希望的候选物.

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
计算化学计算化学

背景情况:

电化学降解反应 (NRR) 为氨合成提供了一个可持续的途径.
积极和选择性电催化剂的开发对于高效的NRR至关重要.

研究的目的:

设计和选新的双金属合金,以提高NRR电催化活性和选择性.
利用机器学习加速发现NRR电催化剂.

主要方法:

密度函数理论 (DFT) 计算来生成合金数据集.
人工神经网络 (ANN) 训练使用电子d状态特征.
预测电化学的限制潜力和特征能量配置文件.
调查电荷转移和吸附能量的选择性分析.

主要成果:

ANN准确地预测了约350种表面合金 (MAE为0.23 eV) 的限制潜力.
Au@Au3Re和Au@Au3Mo被确定为有前途的NRR电催化剂.
通过电荷转移和修改的电子结构,允许增强的催化活性.
高的理论法拉达效率表明了对NRR的优秀选择性.

结论:

合金是一种有效的策略,可以提高NRR的过渡金属催化活性.
机器学习加速了用于电催化剂设计的双金属合金选.
这种方法降低了计算成本,并促进了电催化材料的发现.

更多相关视频

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

相关概念视频

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...