Synthesis and characterisation of pore-expanded mesoporous silica materials

被引：12
|
作者：
Ma, Juanjuan [1 ]
Liu, Qiming [1 ,2 ]
Chen, Dandan [2 ]
Wen, Sheng [3 ]
Wang, Tianhe [4 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
[2] Wuhan Univ, Sch Phys & Technol, Key Lab Artificial Micro & Nanostruct, Minist Educ, Wuhan 430072, Peoples R China
[3] Hubei Engn Univ, Coll Chem & Mat Sci, Xiaogan 432000, Peoples R China
[4] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China
来源：
MICRO & NANO LETTERS | 2015年 / 10卷 / 02期
基金：
中国国家自然科学基金;
关键词：
silicon compounds; porosity; adsorption; desorption; X-ray diffraction; mesoporous materials; pore-expanded mesoporous silica materials; 1; 3; 5-trimethylbenzene; heptanes; small-angle X-ray diffraction; N-2 adsorption-desorption isotherms; temperature; 77; K; 52; degC; SiO2; ORGANIC AUXILIARY CHEMICALS; SIZE CONTROL; SURFACTANT; COPOLYMER; TRIBLOCK; FOAMS;
D O I：
10.1049/mnl.2014.0413
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Mesoporous silicas are synthesised using 1,3,5-trimethylbenzene (TMB) and heptanes as pore expanders. Small-angle X-ray diffraction and N-2 adsorption-desorption isotherms at 77 K were used to characterise the pore structure of the prepared materials. The porosity increased with the added TMB amount for samples using TMB as a pore expander and a total pore value of 2.48 cm(3)/g was obtained, representing an increase by a factor of 2.4 as compared with mesoporous silica without TMB addition. For samples with heptanes as a pore expander, the pore volume increased with synthesis temperature. The mesoporous silica synthesised at 52 degrees C had a total pore volume of 2.38 cm(3)/g.
引用
收藏
页码：140 / 144
页数：5
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