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

文献类型：期刊论文

作者Yi Wei1,2; Qian Zhao1; Zhang, Hongwen1; Le Zhou1,2; Cai, Weiping1,2
刊名NANO FUTURES
出版日期2022-06-01
卷号6
关键词truncated hollow sub-microspheres Pt-Ag-Au multilayer nanoshells template etching and isotropic deposition chemically propelled colloidal motors
DOI10.1088/2399-1984/ac57bc
通讯作者Qian Zhao(zhaoqian@issp.ac.cn) ; Cai, Weiping(wpcai@issp.ac.cn)
英文摘要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.
WOS关键词AUTONOMOUS MOVEMENT ; NANOMOTORS ; MOTION ; CHIP
资助项目International Partnership Program of Chinese Academy of Sciences[116134KYSB20170110] ; Natural Science Foundation of China[51971209] ; Natural Science Foundation of China[11974352] ; Natural Science Foundation of China[51771182]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000791574000001
资助机构International Partnership Program of Chinese Academy of Sciences ; Natural Science Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/131555]  
专题中国科学院合肥物质科学研究院
通讯作者Qian Zhao; Cai, Weiping
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol,HFIPS, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Yi Wei,Qian Zhao,Zhang, Hongwen,et al. Fabrication of Pt-Ag-Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors[J]. NANO FUTURES,2022,6.
APA Yi Wei,Qian Zhao,Zhang, Hongwen,Le Zhou,&Cai, Weiping.(2022).Fabrication of Pt-Ag-Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors.NANO FUTURES,6.
MLA Yi Wei,et al."Fabrication of Pt-Ag-Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors".NANO FUTURES 6(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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