Release Time:2019-03-09  Hits:

Indexed by: Journal Papers

Date of Publication: 2014-03-15

Journal: MATERIALS LETTERS

Included Journals: Scopus、EI、SCIE

Volume: 119

Page Number: 150-153

ISSN: 0167-577X

Key Words: Amorphous materials; Porous materials; Diatomite; Synthesis; MCM-41; Ionic liquid

Abstract: Mesoporous silica materials were synthesized using diatomite as silica source and ionic liquid 1-hexadecyl-3-methylimidazolium bromide ([C(16)mim]Br) as the template. The effects of various experimental parameters, such as molar ratio of [C(16)mim]Br/SiO2, pH value, reaction temperature and time, were systematically investigated. The obtained samples were further characterized by X-ray powder diffraction, nitrogen absorption-desorption analyses and transmission electron microscopy. The results indicated that as-synthesized mesoporous materials possessed the ordered hexagonal mesostructure and high surface area, as well as demonstrated that ionic liquid [C(16)mim]Br was a suitable template. More favorably, as an alternative and inexpensive source of silica, diatomite could significantly reduce the cost of preparation. (C) 2014 Elsevier B.V. All rights reserved.