期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 3, 页码 2044-2049出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.6b02893
关键词
Mesoporous silica; Hierarchical; Shape; Lotus leaf; Hollow
资金
- NIH Director's Trans formative Research Award [R01HL137157]
- NSF (ECCS) [1128677, 1309686, 1509369]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1128677] Funding Source: National Science Foundation
A facile and straightforward strategy was developed to synthesize hierarchical lotus leaf-like mesoporous silica material (LLMSM) with unique bilayer and hollow sandwich-like folds using hexadecylamine as a structure directing agent, high molecular weight polyvinylpyrrolidone as a structure-stabilizing agent, and tetraethyl orthosilicate as a silica precursor in the mixed solvents of water and ethanol. The formation mechanism of LLMSM was proposed based on a series of experimental investigations. This new particulate platform exhibited superior adsorption capacity toward organic dye, effective catalytic reduction of 4-nitrophenol as a Ag catalyst supporter, and a multistage sustained drug release profile. Many other applications can be also envisaged for such a hierarchical structure.
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