Facile preparation of thiol-functionalized SiO<sub>2</sub> microspheres and their adsorption to silver ions

LIU Yan; BAI Xiao; LI Tingting; SUN Yang; SHEN Qihui; YU Dongdong; ZHOU Jianguang

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Facile preparation of thiol-functionalized SiO₂ microspheres and their adsorption to silver ions

更新时间：2023-12-11

- Facile preparation of thiol-functionalized SiO₂ microspheres and their adsorption to silver ions
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 55, Issue 6, Pages: 136-139(2016)
- 作者机构：
  
  1. 吉林化工学院化学与制药工程学院,吉林,吉林,132022
  2. 
  3. 浙江大学医院,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016，
  
  Published Online：25 November 2016，
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LIU Yan, BAI Xiao, LI Tingting, et al. Facile preparation of thiol-functionalized SiO₂ microspheres and their adsorption to silver ions. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 55(6):136-139(2016)
DOI：

LIU Yan, BAI Xiao, LI Tingting, et al. Facile preparation of thiol-functionalized SiO₂ microspheres and their adsorption to silver ions. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 55(6):136-139(2016) DOI：

摘要

表面具有大量巯基的二氧化硅微球与介孔二氧化硅一样，具有吸附重金属离子的功能。通过溶胶凝胶一步法制备巯基功能化的二氧化硅微球，该微球粒度分布均匀、成球率高，直径在1 μm左右。红外和拉曼光谱证明，微球表面富含大量的巯基，超短的吸附平衡时间说明巯基与Ag

迅速螯合，而不同于介孔的扩散吸附。溶液的pH对Ag

吸附量的影响不明显，巯基功能化的微球对Ag

的吸附遵守Slips等温模型，最大吸附量能够达到102 mg/g，并且拟合度达到99.6%。

Abstract

The SiO

microspheres with abundant thiol on the surface have the same property of adsorption to heavy metal ions as that of the mesoporous silica. In onepot

the thiol-functionalized SiO

microspheres were prepared by a sol-gel method

and SiO

microspheres had a narrow particle size distribution and well sphere with diameter around 1 μm. FTIR and Raman spectroscopy confirmed there were a great amount of thiols on the surface of microspheres. Meanwhile

the adsorption process of silver ions by the microspheres finished within u1tra-short time

which was in accord with the chelation of silver ions and thiols. And that was different from the diffusion adsorption of mesoporous silica. Furthermore

the pH value of solution had little effect on the adsorption capacity of silver ions and the adsorption maximum is 102 mg/g in Slips isotherm with R

=99.6%.

关键词

巯基二氧化硅微球吸附银离子

Keywords

thiolSiO2microspheresadsorptionsilver ions

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Related Institution

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Key Laboratory of Cellulose and Lignocellulosics Chemistry//Guangzhou Institute of Chemistry, Chinese Academy of Sciences

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Facile preparation of thiol-functionalized SiO2 microspheres and their adsorption to silver ions

DOI：

摘要

Abstract

关键词

Keywords

references

Facile preparation of thiol-functionalized SiO₂ microspheres and their adsorption to silver ions