南方科技大学知识苑(SUSTech KC): Toward Phase and Catalysis Control: Tracking the Formation of Intermetallic Nanoparticles at Atomic Scale

题名	Toward Phase and Catalysis Control: Tracking the Formation of Intermetallic Nanoparticles at Atomic Scale
作者	Ma, Tao 1; Wang, Shuai2 ; Chen, Minda 3; Maligal-Ganesh, Raghu, V 3; Wang, Lin-Lin 1; Johnson, Duane D.1,4; Kramer, Matthew J.1,4; Huang, Wenyu 3; Zhou, Lin 1,4
通讯作者	Huang, Wenyu; Zhou, Lin
发表日期	2019-05-09
DOI	10.1016/j.chempr.2019.02.026
发表期刊	Chem 影响因子和分区
ISSN	2451-9294
卷号	5 期号:5页码:1235-1247
摘要	Intermetallic nanoparticles (iNPs) have yielded enormous successes in catalytic applications by the formation of ordered phases. However, atomic-level understanding of the alloying mechanism, which plays a pivotal role in controlling intermetallic phases and tailoring their catalytic properties, is still elusive. In this study, we discovered a consecutive formation of ordered Pt3Sn and PtSn phases during the growth of Pt-Sn iNP inside a well-defined nano-reactor at elevated temperature by using in situ scanning transmission electron microscopy. We found that the surface-mediated diffusion of Sn controls overall dynamics of the reaction, while the unique coherent interfacial structure is determinative for the PtSn transformation. We then further controlled the phase selection of Pt-Sn iNPs and demonstrated their distinguishable catalytic behaviors. Our findings not only provide detailed experimental evidence on the alloying mechanism in intermetallic nanoscale systems but also pave the way for mechanistic control of synthesis and catalytic properties of iNPs.
相关链接	[来源记录]
收录类别	SCI
语种	英语
学校署名	其他
资助项目	National Science Foundation[1808239] ; National Science Foundation[CMMI-1406462]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000467750100017
出版者	CELL PRESS
来源库	Web of Science
引用统计	被引频次[WOS]：43
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/25924
专题	工学院_机械与能源工程系
作者单位	1.US DOE, Ames Lab, Ames, IA 50011 USA 2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China 3.Iowa State Univ, Dept Chem, Ames, IA 50011 USA 4.Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA
推荐引用方式 GB/T 7714	Ma, Tao,Wang, Shuai,Chen, Minda,et al. Toward Phase and Catalysis Control: Tracking the Formation of Intermetallic Nanoparticles at Atomic Scale[J]. Chem,2019,5(5):1235-1247.
APA	Ma, Tao.,Wang, Shuai.,Chen, Minda.,Maligal-Ganesh, Raghu, V.,Wang, Lin-Lin.,...&Zhou, Lin.(2019).Toward Phase and Catalysis Control: Tracking the Formation of Intermetallic Nanoparticles at Atomic Scale.Chem,5(5),1235-1247.
MLA	Ma, Tao,et al."Toward Phase and Catalysis Control: Tracking the Formation of Intermetallic Nanoparticles at Atomic Scale".Chem 5.5(2019):1235-1247.