通过oleylamine介导的Pd纳米颗粒的合成,用于催化形式酸氧化
Vismadeb Mazumder1, Shouheng Sun
1Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.
Journal of the American Chemical Society
|March 14, 2009
概括
我们开发了一种简单的方法来制造用于燃料电池的 (Pd) 纳米粒子. 这些非类催化剂对酸氧化具有高度活性和稳定性,显示出清洁能源应用的巨大潜力.
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
- 纳米技术 纳米技术
背景情况:
- 开发高效的非催化剂对于推进燃料电池技术至关重要.
- 纳米粒子为催化提供了一个有希望的替代品.
研究的目的:
- 通过一种简单的方法合成单分散的纳米粒子.
- 为了评估这些纳米颗粒的催化活性和稳定性,用于酸氧化.
主要方法:
- 使用烯胺和二氧化微胺复合物减少烯乙酸 (Pd(acac) 2).
- 用乙酸清洁涂有烯胺的纳米颗粒.
- 在Ketjen碳上支持纳米粒子.
- 使用循环电量计用于酸氧化的电催化评价.
主要成果:
- 成功合成了单分散的纳米粒子.
- 在Ketjen碳上支的Palladium纳米粒子在HClO4溶液中对酸氧化具有很高的催化活性.
- 催化剂表现出极好的稳定性,在1500个循环电压测量周期后没有显著的活性降解.
结论:
- 开发的纳米粒子是高度活跃和稳定的电催化剂.
- 这些纳米粒子作为燃料电池应用的非催化剂显著有前途,特别是用于酸氧化.
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