材料科学
介孔材料
化学工程
纳米颗粒
介孔二氧化硅
粒径
吸附
聚乙二醇
PEG比率
硅酸钠
比表面积
纳米技术
粒子(生态学)
溶胶凝胶
有机化学
复合材料
催化作用
化学
经济
工程类
地质学
海洋学
财务
作者
S. Ranjith Priyan,G. Suresh Kumar,S. Surendhiran,Mohd. Shkir
摘要
Abstract Mesoporous silica nanoparticles with distinct characteristics like particle size, tunable pores, and high surface area have received much interest for environmental remediation, energy conversion, and biological applications. In this work, we synthesized spherical silica nanoparticles with tunable particle size and mesoporous properties using a low‐cost silica source (rice husk) and polyethylene glycol (PEG) via microwave‐assisted sol–gel synthesis. The formation of an amorphous silica structure was found using XRD and FTIR analysis. FESEM analysis showed that altering the PEG concentration from .01 to .005 M produced spherical silica nanoparticles with 100–500 nm in size. Nitrogen adsorption–desorption demonstrated that silica nanoparticles obtained with .005, .007, and .01 M of PEG had unique pore sizes and distributions, with specific surface areas of 51.475, 62.367, and 84.251 m 2 /g, respectively. These results might be due to PEG molecules’ capping effect, which acts as a soft template to regulate particle size, pore size, and dispersion by interacting with sodium silicate precursor. Hence, this approach can be a facile and cost‐effective method to prepare mesoporous silica nanoparticles with controllable nanoscale characteristics for suitable applications.
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