Decoration of Au Nanoparticles on MoS2 Nanospheres: From Janus to Core/Shell Structure | |
Zhou, Le1,2; Zhang, Hongwen1; Bao, Haoming1,2; Liu, Guangqiang1; Li, Yue1; Cai, Weiping1,2 | |
刊名 | JOURNAL OF PHYSICAL CHEMISTRY C |
2018-04-19 | |
卷号 | 122期号:15页码:8628-8636 |
ISSN号 | 1932-7447 |
DOI | 10.1021/acs.jpcc.8b01216 |
英文摘要 | A flexible route is presented for the controlled decoration of the Au nanoparticles (NPs) on the spherical MoS2 particles, just by dropping the HAuCl4 aqueous solution into the hydrothermal reaction-induced MoS2 colloidal solution at room temperature. In the absence of surfactants in the colloidal solution, it has been found that the obtained products are mostly the MoS2/Au Janus particles, in which the hemispherical Au particles are separately attached on the single MoS2 spheres about 100 nm in size. The hemispherical Au particles are built of the ultrafine NPs (<10 nm) and comparable to the MoS2 spheres in size. Further experiments have revealed that the existence of surfactants in the colloidal solution could significantly influence the distribution and decoration of Au NPs on the MoS2 nanospheres. When the MoS2 colloidal solution contains the nonionic or anionic surfactant, such as poly(vinylpyrrolidone) and sodium dodecyl benzene sulfonate, in appropriate content, the addition of HAuCl4 induces the Au ultrafine NPs highly uniformly attached or decorated on the MoS2 spheres. The distribution of the Au ultrafine NPs on the MoS2 spheres evolves from a dispersed decoration to the intact core/shell structure with the rising HAuCl4 addition amount. However, the cationic surfactant could prevent Au NPs from decoration on the MoS2 spheres and induce the self-agglomeration of Au NPs. The formation of MoS2/Au Janus particles is attributed to the aggregation growth of Au ultrafine NPs on the MoS2 spheres, whereas the dispersed decoration of Au ultrafine NPs on the MoS2 spheres is ascribed to the surfactant-induced uniform distribution of Au NPs. Interestingly, such decorated spherical MoS2 NPs have exhibited a much higher surface-enhanced Raman scattering effect than the decorated MoS2 nanoplates. This work presents a simple approach to the controllable decoration of Au NPs on the spherical MoS2 particles. |
资助项目 | National Key Research and Development Program of China Fundamental Research on nano sensing materials and high performance sensors focused on pollutants detection[2017YFA0207101] ; National Natural Science Foundation of China[51531006] ; National Natural Science Foundation of China[11574313] ; National Natural Science Foundation of China[51771182] ; CAS/SAF International Partnership Program for Creative Research Teams |
WOS关键词 | ENHANCED RAMAN-SCATTERING ; LITHIUM STORAGE PROPERTIES ; HYDROGEN EVOLUTION ; FACILE SYNTHESIS ; NANOSHEETS ; GROWTH ; EFFICIENT ; NANOCRYSTALS ; NANORODS |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
语种 | 英语 |
出版者 | AMER CHEMICAL SOC |
WOS记录号 | WOS:000430896500066 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/35545] |
专题 | 合肥物质科学研究院_中科院固体物理研究所 |
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, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Le,Zhang, Hongwen,Bao, Haoming,et al. Decoration of Au Nanoparticles on MoS2 Nanospheres: From Janus to Core/Shell Structure[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(15):8628-8636. |
APA | Zhou, Le,Zhang, Hongwen,Bao, Haoming,Liu, Guangqiang,Li, Yue,&Cai, Weiping.(2018).Decoration of Au Nanoparticles on MoS2 Nanospheres: From Janus to Core/Shell Structure.JOURNAL OF PHYSICAL CHEMISTRY C,122(15),8628-8636. |
MLA | Zhou, Le,et al."Decoration of Au Nanoparticles on MoS2 Nanospheres: From Janus to Core/Shell Structure".JOURNAL OF PHYSICAL CHEMISTRY C 122.15(2018):8628-8636. |
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