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Citation: XU Ying-Ming, LI Jun-Xin, DAI Xiao-Hua, ZHANG Ze, GAO Huai-You. Preparation of Thiol-functionalized Mesoporous Molecular Sieve and Removal of Pb²⁺, Hg²⁺ and Cd²⁺ in Water[J]. Chinese Journal of Applied Chemistry, ;2002, 19(10): 941-945. shu

Preparation of Thiol-functionalized Mesoporous Molecular Sieve and Removal of Pb²⁺, Hg²⁺ and Cd²⁺ in Water

1.
Key Laboratory of Agro-Product Pollution Control of MOA, Agro-Environmental Protection Institute of MOA, Tianjin 300191

Corresponding author: XU Ying-Ming,
Received Date: 5 February 2002
Available Online: 10 May 2002
Fund Project: 国家自然科学基金(20077014) (20077014)国家高技术研究发展计划(2001AA242121) (2001AA242121)天津市自然科学基金(023607911)资助项目 (023607911)

Organic ligands containing the thiol(-SH) metal-chelating functional group were grafted to the surface of a mesoporous molecular sieve MCM-41 prepared from tetraethylorthosilicate, tetra methylanmonium hydroxide and hexadecyl trimethyl ammonium bromide. X-ray diffraction, infrared spectroscopy, elemental analysis, thermogravimetric analysis, ²⁹Si and ¹³C solid-state NMR spectroscopy results demonstrated the presence of the organic ligands in the modified thiol-functionalized material(designated as MP-MCM-41). MP-MCM-41 was found to be highly effective for the adsorption of Hg(Ⅱ), Pb(Ⅱ), and Cd(Ⅱ) ions, exhibiting high metal ion uptake capacities of 148.20, 135.76, and 36.50 mg/g^-1, respectively. The adsorption was fitted to Langmuir isotherms.
- mesoporous molecular sieve,
- surface grafting,
- thiol-functionalized material,
- heavy metal,
- adsorption
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Preparation of Thiol-functionalized Mesoporous Molecular Sieve and Removal of Pb2+, Hg2+ and Cd2+ in Water

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Preparation of Thiol-functionalized Mesoporous Molecular Sieve and Removal of Pb²⁺, Hg²⁺ and Cd²⁺ in Water