Influence of mechanochemical and microwave modification on ion-exchange properties of tin dioxide with respect to uranyl ions

Svitlana Khalameida,Jadwiga Skubiszewska-Zięba,Mariia Samsonenko,Barbara Charmas,Oleg Zakutevskyy

doi:10.1007/s10450-019-00036-2

Svitlana Khalameida, Jadwiga Skubiszewska-Zięba + Show 3 more

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https://doi.org/10.1007/s10450-019-00036-2

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Journal: Adsorption	Publication Date: Feb 14, 2019
Citations: 14	License type: open-access

Affiliation: Maria Curie-Skłodowska University

Abstract

Wet gel and dried xerogel of precipitated tin oxy-hydroxide were subjected to mechanochemical and microwave treatments (MChT and MWT, respectively). The prepared samples were studied using DTA-TG, XRD, FTIR, nitrogen adsorption–desorption. MChT and MWT cause improvement of crystal structure, removal of structural OH-groups and increase mesopores diameter as well as form the meso-macroporous structure. As a result, drastic increase of uranyl-ions sorption for all modified samples is observed. Sorption centers can be divided into three groups: selective cation-exchange, non-selective cation-exchange and anion-exchange.

Highlights

Tin dioxide SnO2 is a versatile material, which is in demand in many industries, namely: the production of gas sensors, catalysis and photocatalysis, and others (Miller et al 2006; Adnan et al 2010; Teterycz et al 2011)
The initial xerogel corresponds to the composition of tin oxyhydroxide (Petro et al 1990; White and Rautiu 1997)
MChT and MWT result in partial removal of structural OH groups and partial transformation of tin oxy-hydroxide into SnO2 (Fig. 1, curve b, c)

Summary

Introduction

Tin dioxide SnO2 is a versatile material, which is in demand in many industries, namely: the production of gas sensors, catalysis and photocatalysis, and others (Miller et al 2006; Adnan et al 2010; Teterycz et al 2011). It is promising as an ion exchanger (Petro et al 1990) It is used for the removal of cations (Co (II), Th (IV), Cr (VI), U (VI) and others) and anions (F (I), I (I), IO3 (I), Sb (OH) (VI)) (Misak et al 1992; Nilchi et al 2013; White and Rautiu 1997). There are many methods for synthesis of tin dioxide, among others sol–gel and precipitation (Ivanenko et al 1999; Zhang and Liu 1999; Nilchi et al 2013; Gavrilov 2000). These techniques allow to prepare tin dioxide of a large specific surface area.

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