Rapid pore expansion of mesoporous silica-based materials using microwave irradiation and pore swelling agents

被引：6

作者：

Bordoni, A., V ^{[1
]}

Lombardo, M., V ^{[2
]}

Wolosiuk, A. ^{[1
]}

机构：

[1] Consejo Nacl Invest Cient & Tecn, Comis Nacl Energia Atom, Ctr Atom Constituyentes, Gerencia Quim Inst Nanociencia & Nanotecnol INN C, Av Gral Paz 1499,B1650KNA, San Martin, Buenos Aires, Argentina

[2] Consejo Nacl Invest Cient & Tecn, Comis Nacl Energia Atom, Ctr Atom Constituyentes, Gerencia Quim, Av Gral Paz 1499,B1650KNA, San Martin, Buenos Aires, Argentina

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2021年 / 274卷

关键词：

Mesoporous materials; Sol-gel; Silica; Microwave; Soft templates; POLYPROPYLENE GLYCOL; FUNCTIONAL-GROUPS; SBA-15; TEMPERATURE; COPOLYMER; SIZE; STABILITY; TEMPLATE; TRIBLOCK; REMOVAL;

D O I：

10.1016/j.matchemphys.2021.125185

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present work we analyze the use of microwave radiation in the presence of pore swelling agents as a postsynthesis treatment for expanding the pore size of non-calcined SiO2-based mesoporous materials. In comparison with traditional hydrothermal treatments, using microwaves decreases significantly the time required for this process and is compatible with both ionic and non-ionic surfactant pore templates (e.g. cetyltrimethylammonium bromide (CTAB) and polypropyleneglycol-based surfactants). The evolution of the mesostructural parameters has been followed with small angle X-ray scattering (SAXS), X-ray diffraction (XRD), field-emission Scanning electron microscopy (FESEM) and N2 porosimetry. In particular, this strategy allows an easy approach for postprocessing non-calcined templated siliceous materials and tailoring their final pore dimensions.

引用

页数：8

共 46 条

[1] Diffusion of single dye molecules in hydrated TiO2 mesoporous films [J].