QQ客服 官方微博 反馈留言

	Palladium nanocrystals enclosed by {100} and {111} facets in controlled proportions and their catalytic activities for formic acid oxidation
	Jin, Mingshang ; Zhang, Hui ; Xie, Zhaoxiong ; Xie ZX(谢兆雄) ; Xia, Younan
	2012-04
关键词	NANOPARTICLES ELECTRODES GROWTH NANOCUBES
英文摘要	This article reports a seed-mediated approach to polyhedral nanocrystals of Pd with controlled sizes, shapes, and different proportions of {100} to {111} facets on the surface. The success of this synthesis relies on the use of Pd nanocubes with different sizes as the seeds and the use of formaldehyde as a relatively mild reducing agent. By controlling the ratio of Pd precursor to the seed, we obtained uniform polyhedrons such as truncated cubes, cuboctahedrons, truncated octahedrons, and octahedrons in a purity approaching 100%. The sizes of these polyhedrons were determined by the edge length of the cubic seeds. Since these Pd polyhedrons were characterized by different proportions of {111} to {100} facets, they could serve as model catalysts to uncover the correlation between the surface structure and the catalytic performance for formic acid oxidation. Our measurements indicate that Pd nanocubes exhibited the highest maximum current density in the forward anodic scan, but the peak position was also located at a potential higher than those of the other polyhedrons. When both the current density and the operation potential are taken into consideration, Pd nanocubes with slight truncation at the corners become the best choice of catalyst for formic acid oxidation. Our study also revealed that the size of Pd polyhedrons had essentially no effect on the activity for formic acid oxidation.; NSF [DMR-1104614, ECS-0335765]; Washington University in St. Louis; China Scholarship Council (CSC)
语种	英语
出版者	ROYAL SOC CHEMISTRY
内容类型	期刊论文
源URL	[http://dx.doi.org/10.1039/c2ee02866b]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Jin, Mingshang,Zhang, Hui,Xie, Zhaoxiong,et al. Palladium nanocrystals enclosed by {100} and {111} facets in controlled proportions and their catalytic activities for formic acid oxidation[J],2012.
APA	Jin, Mingshang,Zhang, Hui,Xie, Zhaoxiong,谢兆雄,&Xia, Younan.(2012).Palladium nanocrystals enclosed by {100} and {111} facets in controlled proportions and their catalytic activities for formic acid oxidation..
MLA	Jin, Mingshang,et al."Palladium nanocrystals enclosed by {100} and {111} facets in controlled proportions and their catalytic activities for formic acid oxidation".(2012).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。