Adsorption of lead from water by thiol-functionalized SBA-15 silicas

Phuong Tran Thi Thu; Tam Truong Thanh; Hung Nguyen Phi; Sung Jin Kim; Vien Vo

doi:10.1007/s10853-010-4288-8

Adsorption of lead from water by thiol-functionalized SBA-15 silicas

Phuong Tran Thi Thu, Tam Truong Thanh, Hung Nguyen Phi, Sung Jin Kim, Vien Vo

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

Thiol-functionalized mesoporous silicas have been synthesized by co-condensation of tetraethoxysilane and varying contents of 3-mercaptopropyltrimethoxysilane in acidic medium with the block copolymer Pluronic 123 as a structure directing agent. Adsorption of lead in aqueous solution on the synthesized materials has been investigated. The adsorption data are fitted to Langmuir isotherms and a maximum adsorption capacity calculated from the Langmuir equation can reach 0.19 mmol of Pb/g. The stoichiometric ratio of S: Pb being 1:1 has been obtained for every adsorbent. The effect of the pH on lead adsorption, and desorption of lead on the lead-loaded materials have been studied.

Original language	English
Pages (from-to)	2952-2957
Number of pages	6
Journal	Journal of Materials Science
Volume	45
Issue number	11
DOIs	https://doi.org/10.1007/s10853-010-4288-8
State	Published - Jun 2010

Bibliographical note

Funding Information:
Acknowledgement Financial support from the National Foundation for Science and Technology Development (NAFOSTED, 104.03.06. 09) is gratefully acknowledged.

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title = "Adsorption of lead from water by thiol-functionalized SBA-15 silicas",

abstract = "Thiol-functionalized mesoporous silicas have been synthesized by co-condensation of tetraethoxysilane and varying contents of 3-mercaptopropyltrimethoxysilane in acidic medium with the block copolymer Pluronic 123 as a structure directing agent. Adsorption of lead in aqueous solution on the synthesized materials has been investigated. The adsorption data are fitted to Langmuir isotherms and a maximum adsorption capacity calculated from the Langmuir equation can reach 0.19 mmol of Pb/g. The stoichiometric ratio of S: Pb being 1:1 has been obtained for every adsorbent. The effect of the pH on lead adsorption, and desorption of lead on the lead-loaded materials have been studied.",

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AU - Thu, Phuong Tran Thi

AU - Thanh, Tam Truong

AU - Phi, Hung Nguyen

AU - Kim, Sung Jin

AU - Vo, Vien

N1 - Funding Information: Acknowledgement Financial support from the National Foundation for Science and Technology Development (NAFOSTED, 104.03.06. 09) is gratefully acknowledged.

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Adsorption of lead from water by thiol-functionalized SBA-15 silicas

Abstract

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