{"title":"Controllable Preparation of Thiol-Modified Silica Particles by an Optimized Stöber Method","authors":"Shuhan Hui, Yandong Han* and Wensheng Yang*, ","doi":"10.1021/acs.langmuir.5c02097","DOIUrl":null,"url":null,"abstract":"<p >This study delves into the impact of the hydrolysis/condensation of 3-mercaptopropyltrimethoxysilane (MPTMS) on the modification of thiol groups on the surface of silica particles. By employing an optimized Stöber method, such as the pH, water content, and quantity of MPTMS in the reaction system, a systematic exploration of the size, shape, and size/shape distribution of the thiol-modified silica particles was carried out. During these investigations, Ellman’s colorimetric method and Raman spectroscopy were utilized to quantitatively analyze the changes in the amount of thiol modification on the surface of silica particles. Furthermore, the synthesized SH-SiO<sub>2</sub> particles were employed as adsorption carriers for Au<sup>3+</sup> ions, which were then reduced to form SH-SiO<sub>2</sub>/Au composite particles. Significantly, these prepared SH-SiO<sub>2</sub>/Au composite particles exhibited remarkable catalytic activity in the reduction reaction of <i>p</i>-nitroaniline.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"41 27","pages":"18175–18183"},"PeriodicalIF":3.9000,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Langmuir","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.langmuir.5c02097","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This study delves into the impact of the hydrolysis/condensation of 3-mercaptopropyltrimethoxysilane (MPTMS) on the modification of thiol groups on the surface of silica particles. By employing an optimized Stöber method, such as the pH, water content, and quantity of MPTMS in the reaction system, a systematic exploration of the size, shape, and size/shape distribution of the thiol-modified silica particles was carried out. During these investigations, Ellman’s colorimetric method and Raman spectroscopy were utilized to quantitatively analyze the changes in the amount of thiol modification on the surface of silica particles. Furthermore, the synthesized SH-SiO2 particles were employed as adsorption carriers for Au3+ ions, which were then reduced to form SH-SiO2/Au composite particles. Significantly, these prepared SH-SiO2/Au composite particles exhibited remarkable catalytic activity in the reduction reaction of p-nitroaniline.
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).
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