Monodispersed Snowman-Like Ag-MoS2 Janus Nanoparticles as Chemically Self-Propelled Nanomotors
文献类型：期刊论文
| 作者 | Zhou, Le1,2; Zhang, Hongwen1 ; Bao, Haoming1,2; Wei, Yi1,2; Fu, Hao1,2; Cai, Weiping1,2
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| 刊名 | ACS APPLIED NANO MATERIALS
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| 出版日期 | 2020 |
| 卷号 | 3 |
| 关键词 | Ag-MoS2 Janus nanoparticles nanospheres polyhedral nanocrystals aggregation and oriented connection growth self-propelled colloidal motor |
| ISSN号 | 2574-0970 |
| DOI | 10.1021/acsanm.9b02159 |
| 通讯作者 | Zhang, Hongwen(hwzhang@issp.ac.cn) ; Cai, Weiping(wpcai@issp.ac.cn) |
| 英文摘要 | Silver (Ag)-based Janus nanoparticles (NPs) are of broad interest for extensive applications due to their excellent photoelectric performances and special structure. However, it still remains challenging to prepare this type of Janus NP with high uniformity in a large scale. Here, we present a facile wet-chemical strategy to synthesize Ag-MoS2 Janus NPs via adding an appropriate amount of AgNO3 into the MoS2 nanosphere (200 nm in size)-contained aqueous solution. These Janus NPs represent a new type of heterogeneous nanostructure. Each Janus NP is made up of one tiny-Ag-dot-decorated MoS2 nanosphere and one polyhedral Ag single crystal (similar to 100 nm in size), and both of them attach together, showing a snowman-like dimer. Such Janus NPs or dimers can not be detached by the ultrasonic vibration even with a high power, showing strong adhesion between them. Further, the morphology and size of the polyhedral Ag nanocrystals attached on MoS2 nanospheres can be controlled by the AgNO3 addition amount, reaction time, and temperature. A growth model is proposed to understand the formation of these Janus NPs, which is based on the tiny Ag dots' aggregation and oriented connection mechanism. Importantly, such Ag-MoS2 Janus NPs can be used as nanomotors, due to their asymmetric catalytic component structure, and self-propelled in H2O2 fuel solutions. They show good directional motion and significant dependence of their speed on fuel concentration. This study expands our understanding of the formation of heterogeneous Janus particles and provides a promising platform to investigate active colloids as nanomotors. |
| WOS关键词 | AUTONOMOUS MOVEMENT ; CATALYTIC-ACTIVITY ; BUILDING-BLOCKS ; MICROPARTICLES ; GROWTH ; AG ; NANOSPHERES ; MICROMOTORS ; DESIGN ; AU |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000510073600066 |
| 出版者 | AMER CHEMICAL SOC |
| 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/334002/103889]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, Hongwen; Cai, Weiping |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Le,Zhang, Hongwen,Bao, Haoming,et al. Monodispersed Snowman-Like Ag-MoS2 Janus Nanoparticles as Chemically Self-Propelled Nanomotors[J]. ACS APPLIED NANO MATERIALS,2020,3. |
| APA | Zhou, Le,Zhang, Hongwen,Bao, Haoming,Wei, Yi,Fu, Hao,&Cai, Weiping.(2020).Monodispersed Snowman-Like Ag-MoS2 Janus Nanoparticles as Chemically Self-Propelled Nanomotors.ACS APPLIED NANO MATERIALS,3. |
| MLA | Zhou, Le,et al."Monodispersed Snowman-Like Ag-MoS2 Janus Nanoparticles as Chemically Self-Propelled Nanomotors".ACS APPLIED NANO MATERIALS 3(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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