Multifunctional nanocomposites constructed from Fe3O4-Au nanoparticle cores and a porous silica shell in the solution phase
文献类型：期刊论文
| 作者 | Chen, FH (陈凤华) ; Chen, QT ; Fang, SM ; Sun, YA ; Chen, ZJ ; Xie, G ; Du, YP (杜亚平) |
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2011 |
| 卷号 | 40期号:41页码:10857-10864 |
| 通讯作者 | Chen, FH (陈凤华) |
| 英文摘要 | This work is directed towards the synthesis of multifunctional nanoparticles composed of Fe3O4-Au nanocomposite cores and a porous silica shell (Fe3O4-Au/pSiO(2)), aimed at ensuring the stability, magnetic, and optical properties of magnetic-gold nanocomposite simultaneously. The prepared Fe3O4-Au/pSiO(2) core/shell nanoparticles are characterized by means of TEM, N-2 adsorption-desorption isotherms, FTIR, XRD, UV-vis, and VSM. Meanwhile, as an example of the applications, catalytic activity of the porous silica shell-encapsulated Fe3O4-Au nanoparticles is investigated by choosing a model reaction, reduction of o-nitroaniline to benzenediamine by NaBH4. Due to the existence of porous silica shells, the reaction with Fe3O4-Au/pSiO(2) core/shell nanoparticles as a catalyst follows second-order kinetics with the rate constant (k) of about 0.0165 l mol(-1) s(-1), remarkably different from the first-order kinetics with the k of about 0.002 s(-1) for the reduction reaction with the core Fe3O4-Au nanoparticles as a catalyst. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000295843900014 |
| 公开日期 | 2012-08-22 |
| 源URL | [http://58.210.77.100/handle/332007/561]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_纳米生物医学与安全研究部_张智军团队 |
| 推荐引用方式 GB/T 7714 | Chen, FH ,Chen, QT,Fang, SM,et al. Multifunctional nanocomposites constructed from Fe3O4-Au nanoparticle cores and a porous silica shell in the solution phase[J]. DALTON TRANSACTIONS,2011,40(41):10857-10864. |
| APA | Chen, FH .,Chen, QT.,Fang, SM.,Sun, YA.,Chen, ZJ.,...&Du, YP .(2011).Multifunctional nanocomposites constructed from Fe3O4-Au nanoparticle cores and a porous silica shell in the solution phase.DALTON TRANSACTIONS,40(41),10857-10864. |
| MLA | Chen, FH ,et al."Multifunctional nanocomposites constructed from Fe3O4-Au nanoparticle cores and a porous silica shell in the solution phase".DALTON TRANSACTIONS 40.41(2011):10857-10864. |
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