密度函数理论研究和铜单原子催化剂在石墨碳化物上的到氧化氧化
1Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
Scientific reports
|April 11, 2025
概括
这项研究设计的单原子催化剂 (SAC) 使用石墨碳化物装饰铜或. 密度函数理论的计算显示,基于的SAC对于到氧化比基于铜的SAC更有效.
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:
- 单原子催化剂 (SAC) 在化学反应中提供高效率和选择性.
- 石墨碳化物 (g-C3N4) 是SACs的一个有希望的支材料.
- 氧化成是一种关键的工业过程.
研究的目的:
- 设计和研究到氧化新型单原子催化剂.
- 为了比较铜 (I) 和 (I) 在石墨碳化物上支的单原子催化剂的催化活性.
- 为了阐明反应路径并确定最有效的催化剂系统.
主要方法:
- 使用M06-2X/def2-SVP理论水平进行密度函数理论 (DFT) 计算.
- 根据相对能量,相互作用能量和能量差距对催化剂进行选.
- 反应途径的分析,包括气相计算和使用偏振连续模型 (PCM) 的溶剂效应.
主要成果:
- 最适合的催化剂具有较低的自旋倍数和金属离子在石墨碳化物支的中心.
- 密度函数理论计算证实了拟议反应途径的可靠性.
- 基于的单原子催化剂在氧化过程中表现出优越的热力学和动力学性能,相比于基于铜的催化剂.
- 溶剂的影响 (乙和甲醇) 并没有显著改变整体催化效率或热力学值,证实了基于Ni的SAC的稳定性.
结论:
- 基于的单原子催化剂以石墨碳化物为基础,对于到氧化非常有效.
- 计算方法为催化剂设计和反应机制提供了宝贵的见解.
- 这些发现为为工业应用开发更高效和更有选择性的催化系统铺平了道路.
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