超细的Pt纳米集团被限制在基于卡利沙林的{Ni24}协调中,用于高效的进化反应
Shentang Wang1,2, Xiaohui Gao3,2, Xinxin Hang1,2
1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, China.
Journal of the American Chemical Society
|December 10, 2016
概括
研究人员创建了一个新的三角镜,以稳定超细纳米集群 (Pt NC). 与商业催化剂相比,这些Pt NC在演化反应中表现出更高的性能.
科学领域:
- 材料科学
- 纳米技术
- 催化剂
背景情况:
- 开发稳定且超细的金属纳米集群对于先进的催化是至关重要的.
- 协调提供封装和稳定纳米粒子的潜力.
- 含硫的配体可以增强金属纳米粒子相互作用.
研究的目的:
- 合成三角镜协调用于限制和稳定超细纳米集群.
- 研究由此产生的含纳米团材料的结构和特性.
- 评估合成纳米集群的电催化活性,以了解的进化.
主要方法:
- 基于Ni的协调的溶热合成 {Ni24(TC4A-SO2) 6 ((TDC) 12 ((H2O) 6}.
- 纳米集团被限制在子中富含硫的腔内.
- 用于演化反应 (HER) 的 Pt 纳米集群的电化学特征.
主要成果:
- 一个稳定的三角镜协调 (CIAC-121) 合成了12个硫原子.
- 超细纳米集群 (Pt NCs) 具有<18 Pt原子,成功地被限制在子内.
- 与商业Pt/C相比,合成的PtNC显示出对HER的增强电催化活性.
结论:
- 三角镜协调有效地稳定了超细的Pt纳米集群.
- 中的硫原子有助于强烈的金属-硫相互作用,增强稳定性和活性.
- 这种方法为设计高性能电催化剂提供了有前途的途径.
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