Revisiting the Stöber method: Inhomogeneity in silica shells

Yi Jian Wong; Liangfang Zhu; Wei Shan Teo; Yan Wen Tan; Yanhui Yang; Chuan Wang; Hongyu Chen

doi:10.1021/ja203316q

Revisiting the Stöber method: Inhomogeneity in silica shells

Yi Jian Wong, Liangfang Zhu, Wei Shan Teo, Yan Wen Tan, Yanhui Yang, Chuan Wang, Hongyu Chen

科研成果: 期刊稿件 › 文章 › 同行评审

398 引用（Scopus）

摘要

We demonstrate that the silica shell on nanoparticles formed by a typical Stöber method is inhomogeneous in nature. The outer layer of the shell is chemically more robust than the inner layer, which can be selectively etched by hot water. Methods are developed to "harden" the soft silica shells. These new understandings are exploited to develop versatile and template-free approaches for fabricating sophisticated yolk-shell nanostructures.

源语言	英语
页（从-至）	11422-11425
页数	4
期刊	Journal of the American Chemical Society
卷	133
期	30
DOI	https://doi.org/10.1021/ja203316q
出版状态	已出版 - 3 8月 2011
已对外发布	是

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AU - Zhu, Liangfang

AU - Teo, Wei Shan

AU - Tan, Yan Wen

AU - Yang, Yanhui

AU - Wang, Chuan

AU - Chen, Hongyu

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AB - We demonstrate that the silica shell on nanoparticles formed by a typical Stöber method is inhomogeneous in nature. The outer layer of the shell is chemically more robust than the inner layer, which can be selectively etched by hot water. Methods are developed to "harden" the soft silica shells. These new understandings are exploited to develop versatile and template-free approaches for fabricating sophisticated yolk-shell nanostructures.

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Revisiting the Stöber method: Inhomogeneity in silica shells

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