Additives in Nanocrystalline Tin Dioxide: Recent Progress in the Characterization of Materials for Gas Sensor Applications

被引：5

作者：

Filatova, Darya ^{[1
]}

Rumyantseva, Marina ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Chem Dept, Moscow 119991, Russia

来源：

MATERIALS | 2023年 / 16卷 / 20期

基金：

俄罗斯科学基金会;

关键词：

tin dioxide; semiconductor gas sensor; nanocomposite; composition characterization; INDUCTIVELY-COUPLED PLASMA; TRIETHYLAMINE-SENSING PROPERTIES; CONDUCTIVE SNO2 CERAMICS; PEROVSKITE SOLAR-CELLS; THIN-FILM; TRANSPARENT ELECTRODES; NANO-HETEROSTRUCTURES; CHEMICAL-MODIFICATION; MASS-SPECTROMETRY; LATTICE CAPACITY;

D O I：

10.3390/ma16206733

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：

Tin dioxide has huge potential and is widely studied and used in different fields, including as a sensitive material in semiconductor gas sensors. The specificity of the chemical activity of tin dioxide in its interaction with the gas phase is achieved via the immobilization of various modifiers on the SnO2 surface. The type of additive, its concentration, and the distribution between the surface and the volume of SnO2 crystallites have a significant effect on semiconductor gas sensor characteristics, namely sensitivity and selectivity. This review discusses the recent approaches to analyzing the composition of SnO2-based nanocomposites (the gross quantitative elemental composition, phase composition, surface composition, electronic state of additives, and mutual distribution of the components) and systematizes experimental data obtained using a set of analytical methods for studying the concentration of additives on the surface and in the volume of SnO2 nanocrystals. The benefits and drawbacks of new approaches to the high-accuracy analysis of SnO2-based nanocomposites by ICP MS and TXRF methods are discussed.

引用

页数：26

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