支持ZnO单层单原子催化剂,用于高效的电催化演化反应
Rongzhi Wang1, Jin-Cheng Zheng1,2
1Department of Physics, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Xiamen University, Xiamen 361005, China. jczheng@xmu.edu.cn.
Physical chemistry chemical physics : PCCP
|February 1, 2024
概括
本研究探讨过渡金属合的ZnO单层作为高效的演化反应 (HER) 催化剂. ,和添加的ZnO具有很高的稳定性和活性,为清洁能源应用提供了有前途的替代方案.
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.
- 可再生能源可再生能源是可再生能源.
背景情况:
- 是一种关键的可持续能源载体.
- 开发高效的演化反应 (HER) 催化剂对于清洁能源至关重要.
- 二维材料具有独特的催化性能.
研究的目的:
- 研究过渡金属吸附和化ZnO单层的HER活性.
- 在各种条件下评估催化剂的稳定性和性能.
- 探索应变工程对催化活性的影响.
主要方法:
- 密度函数理论 (DFT) 的计算.
- 在ZnO单层上研究了10种不同的过渡金属原子.
- 分析了Volmer-Tafel反应机制和应变工程.
主要成果:
- Pt@ZnO-m,联合化ZnO-m和联合化ZnO-m具有很高的稳定性和HER活性.
- 这些催化剂显示的H吸附自由能量低于纯Pt.
- 最佳的Pt@ZnO-m具有H吸附的自由能量为-0.017 eV.
- 伏尔默-塔菲尔阶段在能量方面是有利的.
- Co@ZnO-m和Ir@ZnO-m表现出广泛的pH范围和抗酸性.
- Pt@ZnO-m和Co-doped ZnO-m在压力下保持性能 (-4%至4%).
结论:
- 过渡金属合的ZnO单层是有希望的HER催化剂.
- Pt@ZnO-m,协同化ZnO-m和Ir化ZnO-m的性能优于或与Pt.
- 应变工程可以进一步优化催化剂性能.
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