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A single Au nanoparticle anchored inside the porous shell of periodic mesoporous organosilica hollow spheres
文献类型：期刊论文
| 作者 | Yang, Ying1; Zhang, Wen1; Zhang, Ying1; Zheng, Anmin2; Sun, Hui1; Li, Xinsong1; Liu, Suyan1; Zhang, Pengfang1; Zhang, Xin1 |
| 刊名 | NANO RESEARCH
 |
| 出版日期 | 2015-10-01 |
| 卷号 | 8期号:10页码:3404-3411 |
| 关键词 | gold nanoparticles periodic mesoporous organosilica yolk-shell nanostructure core-shell interaction 4-nitropheol reduction |
| 英文摘要 | An ideal metal catalyst requires easy contact with reaction reagents, a large number of exposed active sites, and high stability against leaching or particle agglomeration. Anchoring a metal core inside a porous shell, though scarcely reported, may combine these advantages owing to the integration of the conventional supported metal arrangement into a core@void@shell architecture. However, achieving this is extremely difficult owing to the weak core-shell affinity. Herein, we report, for the first time, an approach to overcome this challenge by increasing the core-shell interaction. In this regard, we synthesized a novel Au@void@periodic mesoporous organosilica (PMO) architecture in which a single Au core is firmly anchored inside the porous shell of the hollow PMO sphere. The non-covalent interactions between the poly(vinylpyrrolidone) (PVP) groups of functionalized Au and ethane moieties of PMO facilitate the movement of the Au core towards the porous shell during the selective alkaline etching of Au@SiO2@PMO. Shell-anchored Au cores are superior to the suspended cores in the conventional Au@void@PMO in terms of contact with reagents and exposure of active sites, and hence show higher catalytic efficiency for 4-nitrophenol reduction. The methodology demonstrated here provides a new insight for the fabrication of versatile multifunctional nanostructures with cores anchored inside hollow shells. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 关键词[WOS] | CORE-SHELL ; AT-SILICA ; NANOSTRUCTURES ; CATALYSTS ; CARBON ; TRANSFORMATION ; NANOREACTORS ; EPOXIDATION ; TEMPLATE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000362588100027 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8189]  |
| 专题 | 武汉物理与数学研究所_磁共振应用研究部 |
| 作者单位 | 1.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan Ctr Magnet Resonance, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ying,Zhang, Wen,Zhang, Ying,et al. A single Au nanoparticle anchored inside the porous shell of periodic mesoporous organosilica hollow spheres[J]. NANO RESEARCH,2015,8(10):3404-3411. |
| APA | Yang, Ying.,Zhang, Wen.,Zhang, Ying.,Zheng, Anmin.,Sun, Hui.,...&Zhang, Xin.(2015).A single Au nanoparticle anchored inside the porous shell of periodic mesoporous organosilica hollow spheres.NANO RESEARCH,8(10),3404-3411. |
| MLA | Yang, Ying,et al."A single Au nanoparticle anchored inside the porous shell of periodic mesoporous organosilica hollow spheres".NANO RESEARCH 8.10(2015):3404-3411. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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