Monodisperse Silica Microsphere with Extremely Large Specific Surface Area: Preparation and Characterization

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-04-25 DOI:10.1021/acs.langmuir.5c00607

Ruicheng Xiao, Siming Yu, Zhongsheng Tang, Jianping Tang, Hang Zhang, Shengliang Zhong

引用次数: 0

Abstract

Monodisperse SiO₂ microspheres are widely used in catalysis, separation, adsorption, and drug delivery. Their particle size, uniformity, and specific surface area are crucial for these applications. This study reports the novel preparation of monodisperse SiO₂ microspheres using cetyltrimethylammonium bromide as the template agent, employing hexadecylamine serving concurrently as a pore-expanding agent and catalyst. By controlling the reactant quantities and reaction conditions, we achieved monodisperse SiO₂ microspheres with tunable particle sizes ranging from 800 nm to 2.5 μm with exceptionally large specific surface areas. It is worth mentioning that microspheres with a particle size of 2 μm and extremely uniform size distribution were produced at room temperature. Excitingly, it has a BET specific surface area of 1543 m²/g. Various effects on the preparation of the microspheres were investigated in detail, and the growth mechanism of these microspheres was elucidated.

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具有极大比表面积的单分散二氧化硅微球：制备和表征

单分散二氧化硅微球广泛应用于催化、分离、吸附和给药等领域。它们的粒度、均匀性和比表面积对这些应用至关重要。本研究以十六烷基三甲基溴化铵为模板剂，同时使用十六烷基胺作为扩孔剂和催化剂，报告了单分散 SiO2 微球的新型制备方法。通过控制反应物的数量和反应条件，我们获得了粒径从 800 nm 到 2.5 μm 的单分散 SiO2 微球，其比表面积特别大。值得一提的是，我们在室温下制备出了粒径为 2 μm、粒度分布极为均匀的微球。令人兴奋的是，它的 BET 比表面积为 1543 m2/g。我们详细研究了微球制备过程中的各种影响，并阐明了这些微球的生长机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).