Silica-coated magnetite nanoparticles functionalized with betaine and their use as an adsorbent for Mo(VI) and Re(VII) species from acidic aqueous solutions

被引：15
作者：
Alfaro, Ian [1 ]
Molina, Lorena [1 ]
Gonzalez, Pablo [1 ]
Gaete, Jose [1 ]
Valenzuela, Fernando [1 ]
Marco, Jose F. [2 ,3 ]
Saez, Cesar [4 ,5 ]
Basualto, Carlos [1 ]
机构：
[1] Univ Chile, Fac Ciencias Quim & Farmaceut, Santos Dumont 964, Santiago, Chile
[2] CSIC, Inst Quim Fis Rocasolano, Calle Serrano 119, E-28006 Madrid, Spain
[3] Inst Espana, Madrid, Spain
[4] Pontificia Univ Catolica Chile, Dept Ingn Quim & Bioproc, Ave Vicuna Mackenna 4860, Santiago, Chile
[5] Pontificia Univ Catolica Chile, Ctr Invest Nanotecnol & Mat Avanzados CIEN UC, Ave Vicuna Mackenna 4860, Santiago, Chile
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2019年 / 78卷
关键词：
Betaine-functionalized magnetite nanoparticles; Core-shell adsorbent for Mo and Re; MOLECULAR-STRUCTURE; PARTICLE-SIZE; XPS SPECTRA; REMOVAL; ADSORPTION; IONS; SELECTIVITY; PERRHENATE; RHENIUM; SINGLE;
D O I：
10.1016/j.jiec.2019.06.002
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The aim of this work is to produce a superparamagnetic core-shell adsorbent material composed of magnetite nanoparticles coated with a silica layer and functionalized with betaine for applications associated with the recovery of molybdenum and rhenium anions from highly acidic aqueous solutions. The resulting nanoparticles with a quaternary amine surface were predominantly spherical with average diameters of 14.3 +/- 1.7 nm. Adsorption experiments at pH values of 1-2 confirmed that it was possible to uptake molybdate and perrhenate species using this adsorbent nanomaterial, achieving maximum loading capacities of 15 mg/g(MNP) for Mo and 19 mg/g(MNP) for Re. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：271 / 283
页数：13
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