Elaborate control over the morphology and pore structure of porous silicas for VOCs removal with high efficiency and stability

Wang, Hongning, Wang, Tao, Yu, Meihua, Huang, Xiaodan, Zhong, Jing, Huang, Weiqiu and Chen, Ruoyu (2017) Elaborate control over the morphology and pore structure of porous silicas for VOCs removal with high efficiency and stability. Adsorption, 23 1: 37-50. doi:10.1007/s10450-016-9815-8


Author Wang, Hongning
Wang, Tao
Yu, Meihua
Huang, Xiaodan
Zhong, Jing
Huang, Weiqiu
Chen, Ruoyu
Title Elaborate control over the morphology and pore structure of porous silicas for VOCs removal with high efficiency and stability
Journal name Adsorption   Check publisher's open access policy
ISSN 1572-8757
0929-5607
Publication date 2017-01-01
Year available 2016
Sub-type Article (original research)
DOI 10.1007/s10450-016-9815-8
Open Access Status Not yet assessed
Volume 23
Issue 1
Start page 37
End page 50
Total pages 14
Place of publication New York, NY, United States
Publisher Springer New York LLC
Collection year 2017
Language eng
Formatted abstract
Highly ordered hexagonal meso-structured, vesicles, and mesoporous ordered siliceous foams have been elaborately synthesized in weak HCl solution under static conditions without any organic additives by finely tuning reaction pH (3.0–5.0) and/or the amount of adding sodium sulfate (Na2SO4). Lower pH value is favorable for hexagonal structure and higher pH value and Na2SO4 concentration is beneficial for vesicles and foams. Siliceous materials with different morphologies (rod, vesicle and foam), structures (hexagonal, vesicle and foam) and pore sizes were used for volatile organic compounds (VOCs) removal. The adsorption and desorption performance of hexagonal mesostructure (S1), vesicles (S5) and macroporous ordered siliceous (S7) samples were investigated under static (water vapor, n-hexane and 93# gasoline) and dynamic (n-hexane) conditions. Compared with S1, S5, commercial silica gel (SG) and activated carbon (AC), S7 shows higher static adsorption capacity of n-hexane and 93# gasoline, more stable breakthrough time and larger n-hexane adsorption capacity under dynamic adsorption conditions. The designed siliceous materials with high VOCs removal capacity and recyclability show great potential for VOCs controlling.
Keyword Adsorption
Hexagonal silica
Siliceous foam
Siliceous vesicle
Volatile organic compound
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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