Positron annihilation study of silica films templated by a cationic surfactant

Bangyun Xiong; Wenfeng Mao; Xiuqin Tang; Kenji Ito; Chunqing He

doi:10.56646/jjapcp.2.0_011204

2nd Japan-China Joint Workshop on Positron Science (JWPS2013)

Session ID : 011204

DOI https://doi.org/10.56646/jjapcp.2.0_011204

Conference information

Host: The organizing committee of JWPS2013

Name : 2nd Japan-China Joint Workshop on Positron Science (JWPS2013)

Location : Tsukuba, Japan

Date : December 20, 2013 - December 23, 2013

Polymers, membranes, and porous media

Positron annihilation study of silica films templated by a cationic surfactant

Bangyun Xiong, Wenfeng Mao, Xiuqin Tang, Kenji Ito, Chunqing He

Author information

CONFERENCE PROCEEDINGS OPEN ACCESS

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Abstract

Porous silica films were synthesized via a sol–gel method using tetraethyl orthosilicate with mixing hexadecyltrimethylammonium bromide (CTAB) as a structural template. Doppler broadening of positron annihilation radiation spectroscopy based on a slow positron beam and ellipsometry were applied to the study of the prepared silica films. The obtained results suggested that a nanoscopic structure change for the porous silica films takes place around 15 wt % of the CTAB loading.

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