Facile and rapid ultrasound-mediated synthesis of spherical mesoporous silica submicron particles with high surface area and worm-like mesoporosity
Facile and rapid ultrasound-mediated synthesis of spherical mesoporous silica submicron particles with high surface area and worm-like mesoporosity
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DOI：
10.1016/j.matlet.2020.128620
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发表时间：
2020-12-15
影响因子：
3
通讯作者：
Bakry, Mohamed
中科院分区：
文献类型：
--
作者：
El-Fiqi, Ahmed;Bakry, Mohamed
在这里，提出了在环境条件下简便快速的超声介导合成，用于生产具有高比表面积（SSA）和高蠕虫状介孔率的新型球形介孔二氧化硅亚微米颗粒（MSP）。一锅合成设计包括使用阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）进行软模板化，应用高功率超声波（Us）在甲醇/NH4OH溶液中水解/缩合原硅酸四乙酯（TEOS）以及剧烈磁力搅拌。制备了具有蠕虫状介孔结构的球形 MSP，平均粒径约为 545 nm，SSA 约为 100 nm。 1544m(2)/g，总孔容高达0.75 cm(3)/g，NLDFT孔径为2.94 nm。开发的 MSP 为应用程序带来了巨大的希望，例如： H-2 储存、CO2 捕获、从气体中去除汞以及药物输送。 (C) 2020 Elsevier B.V. 保留所有权利。
Here, a facile and rapid ultrasound-mediated synthesis at ambient conditions is proposed for production of novel spherical mesoporous silica submicron particles (MSP) with high specific surface area (SSA) and high worm-like mesoporosity. A one-pot synthesis was designed to involve soft-templating with cationic surfactant cetyltrimethylammonium bromide (CTAB), application of high-power ultrasound (Us) for hydrolysis/condensation of tetraethyl orthosilicate (TEOS) in methanol/NH4OH solution and vigorous magnetic stirring. Spherical MSP with worm-like mesoporous structure were produced with average particle diameter similar to 545 nm, SSA ca. 1544m(2)/g, total pore volume as high as 0.75 cm(3)/g and NLDFT pore diameter of 2.94 nm. The developed MSP hold great promise for applications e.g. H-2 storage, CO2 capture, removal of Hg from gas as well as drug delivery. (C) 2020 Elsevier B.V. All rights reserved.