用于氧降解反应的Pd-Pt基
Sheng Chen1, Jiankang Zhao1, Hongyang Su1
1Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
Journal of the American Chemical Society
|January 2, 2021
概括
我们创建了新型的- (Pd-Pt) 基质催化剂,用于高效的氧降解反应. 由于其独特的组成和侧面效应,这些空心框架结构表现出卓越的催化活性.
科学领域:
- 材料科学
- 催化剂
- 纳米技术
背景情况:
- 空洞框架结构提供了对活跃的催化站点的更好访问.
- - (Pd-Pt) 合金对电催化有希望.
研究的目的:
- 合成Pd-Pt空洞框架结构,
- 评估它们作为氧减少反应 (ORR) 的催化剂的有效性.
主要方法:
- 合成不同Pd/Pt比率的Pd-Pt纳米立方体.
- 选择性蚀刻以创建双立方结构 (tesseracts).
- 由此产生的纳米晶体形态的表征 (八足,图形,纳米框架).
主要成果:
- 成功制备了具有独特双立方结构的Pd-Pt晶体.
- 在经过测试的结构中,Pd-Pt晶体表现出最高的ORR质量活性 (1.86A mg-1Pt).
- 最佳的氧吸附能量被确定为高活性的关键.
结论:
- Pd-Pt晶体是非常高效的ORR催化剂.
- 结合面和构成效应,提升了催化性能.
- 这项研究为设计先进的纳米催化剂提供了一种新的方法.
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