Template preparation of twisted nanoparticles of mesoporous silica--颗粒学报PARTICUOLOGY

Niu, K., Ni, Z., Fu, C., Kaneko, T., & Chen, M. (2011). Template preparation of twisted nanoparticles of mesoporous silica. Particuology, 9(1), 51-55. https://doi.org/10.1016/j.partic.2010.06.004

Template preparation of twisted nanoparticles of mesoporous silica

Kui Niu ^a, Zhongbin Ni ^a, Chengwu Fu ^a, Tatsuo Kaneko ^b, Mingqing Chen ^a *

a School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China
b School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Japan

10.1016/j.partic.2010.06.004

Volume 9, Issue 1, February 2011, Pages 51-55

Received 9 November 2009, Revised 11 June 2010, Accepted 18 June 2010, Available online 30 December 2010.

E-mail: mqingchen1962@yahoo.com

Highlights

Abstract

Optical isomers of N-lauroyl-L-(or-D-) alanine sodium salt {C₁₂-L-(or-D-)AlaS} surfactants were used for the preparation of mesoporous silica nanoparticles with a twisted hexagonal rod-like morphology. Thermogravimetric analysis (TGA) was used to determine the temperature for template removal. Circular dichroism (CD) spectra of the surfactant solution with various compositions illustrated the formation and supramolecular assembly of protein-like molecular architecture leading to formation of twisted nanoparticles. Scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and X-ray powder diffraction (XRD) patterns of these as-synthesized mesoporous silica confirmed that the twisted morphology of these nanoparticles was closely related to the supramolecular-assembled complex of amino acid surfactants.

Graphical abstract

Keywords

Supramolecular assembly; Twisted morphology; Mesoporous silica; Amino acid surfactants

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