Nucleation and Growth of Monodisperse Silica Nanoparticles

被引：167

作者：

Carcouet, Camille C. M. C. ^{[1
]}

van de Put, Marcel W. P. ^{[1
,2
]}

Mezari, Brahim ^{[3
]}

Magusin, Pieter C. M. M. ^{[3
]}

Laven, Jozua ^{[1
]}

Bomans, Paul H. H. ^{[1
,2
]}

Friedrich, Heiner ^{[1
,2
]}

Esteves, A. Catarina C. ^{[1
]}

Sommerdijk, Nico A. J. M. ^{[1
,2
]}

van Benthem, Rolf A. T. M. ^{[1
,4
]}

de With, Gijsbertus ^{[1
,2
]}

机构：

[1] Eindhoven Univ Technol, Lab Mat & Interface Chem, NL-5600 MB Eindhoven, Netherlands

[2] Eindhoven Univ Technol, Soft Matter CryoTEM Res Unit, NL-5600 MB Eindhoven, Netherlands

[3] Eindhoven Univ Technol, Lab Inorgan Mat Chem, NL-5600 MB Eindhoven, Netherlands

[4] DSM Ahead Performance Mat BV, NL-6160 MD Geleen, Netherlands

来源：

NANO LETTERS | 2014年 / 14卷 / 03期

关键词：

Monodisperse silica particles; nucleation and growth; silica chemistry; cryo-TEM; solid state NMR; CATALYZED-HYDROLYSIS; IN-SITU; PARTICLES; PRECIPITATION; CONDENSATION; DYNAMICS; SPHERES; SAXS;

D O I：

10.1021/nl404550d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Although monodisperse amorphous silica nanoparticles have been widely investigated, their formation mechanism is still a topic of debate. Here, we demonstrate the formation of monodisperse nanoparticles from colloidally stabilized primary particles, which at a critical concentration undergo a concerted association process, concomitant with a morphological and structural collapse. The formed assemblies grow further by addition of primary particles onto their surface. The presented mechanism, consistent with previously reported observations, reconciles the different theories proposed to date.

引用

页码：1433 / 1438

页数：6

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