Emulsion droplets as a dynamic interface for the direct and large-scale synthesis of ultrathin free-standing mesoporous silica films as well as 2D polymeric and carbon nanomaterials

Nanoscale
Jian LiGuangtao Li

Abstract

The efficient synthesis of free-standing mesostructured two-dimensional (2D) nanofilms with high-yield as well as good control of composite, mesophase structure, orientation of the pore channel and thickness represents a big challenge. In this work, it was serendipitously found that microemulsion droplets of tetraethylorthosilicate (TEOS) could serve as a novel dynamic interface for continuous growth of nanofilms. Based on this finding, a general, efficient strategy for the direct and large-scale synthesis of free-standing mesoporous silica films (FSMSFs) was developed. Remarkably, with the careful control of the synthesis conditions, the FSMSFs with high-yield as well as good control of composite, mesophase structure, orientation of the pore channel and thickness could be efficiently achievable. More importantly, by using polymerizable surfactants the preorganized monomers in the nanochannels of the resultant silica films could be further converted into 2D polymers and carbon nanomaterials as well as metal particle-decorated forms, as exemplified by using pyrrole-terminated surfactants, demonstrating a powerful method to create 2D inorganic, organic or hybrid functional nanomaterials.

References

Mar 30, 2005·Chemical Communications : Chem Comm·Aihua ChenXiaoyu Li
Apr 20, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·R VogelP Meredith
Jun 26, 2007·Nature Materials·A WalcariusJ Ghanbaja
Jan 9, 2009·Angewandte Chemie·Junji SakamotoA Dieter Schlüter
Dec 30, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Syuji FujiiNiklaas J Buurma
Jan 5, 2013·Chemical Reviews·Mingsheng XuHongzheng Chen
Jul 23, 2013·Advanced Materials·Wei LiDongyuan Zhao
Mar 11, 2015·Journal of the American Chemical Society·Kun-Che KaoChung-Yuan Mou

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Citations

Nov 24, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Haojie ZhangWenshui Xia
Oct 14, 2017·ACS Applied Materials & Interfaces·Zhuoyue ChenYuanjin Zhao

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