Fabrication of Pt–Ag–Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors

doi:10.1088/2399-1984/ac57bc

HFCAS OpenIR

	Fabrication of Pt–Ag–Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors
	Wei,Yi 1,2; Zhao,Qian 1; Zhang,Hongwen1 ; Zhou,Le 1,2; Cai,Weiping1,2
	2022-05-06
发表期刊	Nano Futures
通讯作者	Zhao,Qian() ; Cai,Weiping()
摘要	Abstract Colloidal motors with cavity structure, which have advantages over solid motors in catalytic efficiency, cargo capacity and biocompatibility, are still expected. Here, we design and fabricate a type of truncated hollow sub-microsphere via organic colloidal template etching/heating and layer-by-layer isotropic deposition. The as-prepared truncated hollow sphere is of one circular open pore through the shell layer and built of Pt, Ag and Au shell layers from inside to outside. They are controllable in sphere diameter, circular open pore size and shell thickness, which depend on the template and deposition conditions. Further experiments have shown that the Ag sandwich layer and post-deposition ageing process are crucial to obtaining strong and complete truncated hollow sub-microspheres. Their formation is attributed to the template geometry and nearly isotropic deposition. Due to the catalytic Pt layer on the inner surface and the truncated hollow spherical structure, such Pt–Ag–Au hollow spheres are demonstrated to be chemically propelled colloidal motors, which can directionally move in H2O2-containing solutions. This study presents a controllable route for mass-fabricating heterogeneous multi-layer truncated hollow sub-microspheres, and provides a new type of chemically self-propelled colloidal motor.
关键词	truncated hollow sub-microspheres Pt–Ag–Au multilayer nanoshells template etching and isotropic deposition chemically propelled colloidal motors
DOI	10.1088/2399-1984/ac57bc
语种	英语
WOS记录号	IOP:nanof_6_2_025003
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/129624
专题	中国科学院合肥物质科学研究院
通讯作者	Zhao,Qian; Cai,Weiping
作者单位	1.Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 2.University of Science and Technology of China, Hefei 230026, People’s Republic of China
推荐引用方式 GB/T 7714	Wei,Yi,Zhao,Qian,Zhang,Hongwen,等. Fabrication of Pt–Ag–Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors[J]. Nano Futures,2022,6.
APA	Wei,Yi,Zhao,Qian,Zhang,Hongwen,Zhou,Le,&Cai,Weiping.(2022).Fabrication of Pt–Ag–Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors.Nano Futures,6.
MLA	Wei,Yi,et al."Fabrication of Pt–Ag–Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors".Nano Futures 6(2022).