期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 46, 页码 52279-52288出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c13076
关键词
self-assembly; mesoporous; bimodal; Gemini surfactant; silica; antimicrobial; CO2 capture
资金
- Nanyang Technological University, Singapore
The one-pot synthesis strategy described in this study generates bimodal mesoporous silica nanoparticles through coassembly of a structure-directing Gemini surfactant with a sol additive. The resulting nanoparticles have versatile properties that can be controlled by synthesis temperature and molar ratio, and exhibit excellent carbon dioxide adsorption capacities and antimicrobial properties.
Mesoporous silica nanoparticles have highly versatile structural properties that are suitable for a plethora of applications including catalysis, separation, and nanotherapeutics. We report a one-pot synthesis strategy that generates bimodal mesoporous silica nanoparticles via coassembly of a structure-directing Gemini surfactant (C16-3-16) with a tetraethoxysilane/(3-aminopropyl)-triethoxysilane-derived sol additive. Synthesis temperature enables control of the nanoparticle shape, structure, and mesopore architecture. Variations of the aminosilane/alkylsilane molar ratio further enable programmable adjustments of hollow to core-shell and dense nanoparticle morphologies, bimodal pore sizes, and surface chemistries. The resulting Gemini-directed aminated mesoporous silica nanoparticles have excellent carbon dioxide adsorption capacities and antimicrobial properties against Escherichia coli. Our results provide an enhanced understanding of the structure formation of multiscale mesoporous inorganic materials that are desirable for numerous applications such as carbon sequestration, water remediation, and biomedical-related applications.
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