演化反应单原子催化剂选的关键成分:化的案例
Clara Saetta1, Ilaria Barlocco1, Giovanni Di Liberto1
1Dipartimento di Scienza dei Materiali, Università degli studi di Milano Bicocca, Via R. Cozzi 55, Milano, 20125, Italy.
计算选显示,考虑非传统的中间体和催化剂稳定性对于准确预测进化反应 (HER) 的单原子催化剂 (SAC) 是至关重要的. 自相互作用校正的功能性对可靠的 HER 催化剂发现至关重要.
科学领域:
- 计算化学是一种计算化学.
- 材料科学是一种材料科学.
- 催化剂是一种催化剂.
背景情况:
- 单原子催化剂 (SAC) 对进化反应 (HER) 是有前途的.
- 精确的计算选需要仔细考虑影响催化活性和稳定性的基本因素.
- 化 (TiN) 被探索为SAC的支材料.
研究的目的:
- 在化 (TiN) 上支持的单原子催化剂 (SAC) 进行计算选,用于进化反应 (HER).
- 研究非传统中间体和催化剂稳定性对HER活动预测的影响.
- 评估自我交互纠正的函数对于可靠的SAC选的必要性.
主要方法:
- 密度函数理论 (DFT) 的计算用于计算选.
- 分析包括H2复合体和H*中间体的形成.
- 在相关的工作条件下 (pH和电压) 评估了催化剂的稳定性.
- 使用了自我交互纠正的函数.
主要成果:
- 非传统的H2复合体的形成显著影响了HER活动的预测.
- 对于准确的预测,需要自我互动校正的函数.
- 催化剂稳定性分析显示,一些潜在的催化剂在工作条件下不稳定.
- 考虑到非传统的中间体和稳定性,希望 HER 催化剂的数量减少了.
结论:
- 准确预测HER的SAC需要结合非常规的中间体和稳定性评估.
- 自交互纠正的函数对于可靠的计算选至关重要.
- 这项研究确定了TiN上的HER的潜在SAC候选者,这需要进一步的实验研究.
更多相关视频
12:08Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
Published on: June 24, 2022
08:40Synthesis 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
相关概念视频
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
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...
Catalysis
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
