Amino-functionalized SBA-15 mesoporous silicas as sorbents of platinum (IV) ions

被引：36

作者：

Dobrowolski, R. ^{[1
]}

Oszust-Cieniuch, M. ^{[1
]}

Dobrzynska, J. ^{[1
]}

Barczak, M. ^{[1
]}

机构：

[1] Marie Curie Sklodowska Univ, Fac Chem, PL-20031 Lublin, Poland

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2013年 / 435卷

关键词：

Mesoporous silica; SBA-15; Adsorption; Recovery; Platinum (IV) ions; AEROSOL-ASSISTED SYNTHESIS; ADSORPTION PROPERTIES; NONIONIC TRIBLOCK; GROUP-METALS; MERCURY(II); COPOLYMER; SORPTION; REMOVAL;

D O I：

10.1016/j.colsurfa.2012.12.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Amino-functionalized mesoporous silicas were synthesized by co-condensation of tetraethoxysilane (TEOS) and aminopropyltriethoxysilane (ATES) or N[3-(trimethoxysilyl)propyl]ethylenediamine (TMPD) in the presence of Pluronic P123 block copolymer. The obtained materials have well-developed porous structures - the values of specific surface area are in the range of 740-840 m(2)/g, and the sizes of cylindrical mesopores are in the range of 6.5-6.8 nm. A few instrumental techniques were used to characterize structure, morphology and composition: XRD, nitrogen sorption measurements, elemental analysis, FTIR, Si-29 NMR XPS, TEM. The obtained organosilicas were used as sorbents of Pt(IV) ions. Batch adsorption studies were carried out with various parameters, such as initial metal ion concentration, contact time and pH. Desorption experiments were also performed to examine possibility of quantitative recovery of bound platinum ions. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：63 / 70

页数：8

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