TiO2-SnO2 Nanocomposites Obtained by Hydrothermal Method

2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP) Pub Date : 2018-09-01 DOI:10.1109/NAP.2018.8914747

Anastasiya S. Kutuzova, T. Dontsova

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引用次数: 6

Abstract

The TiO2-SnO2nanocomposites with different ratio of components (1, 3, 5, 10 mas% of tin (IV) oxide) were obtained by simple and low-temperature hydrothermal method. The synthesized nanopowders were analyzed by means of X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy and N2 adsorption-desorption method. The obtained composites are nanocrystalline with a crystallite size in the range of 5–7 nm. It was found that the synthesized nanocomposites consist of anatase and rutile-type TiO2-SnO2 solid solutions because of Sn4+ ions incorporation. It was established that the presence of tin (IV) oxide increases the specific surface area of nanocomposites. It was demonstrated, that obtained TiO2-SnO2 nanocomposites show better photocatalytic performance towards anionic dyes (congo red) than towards cationic dyes (methylene blue) and the photocatalytic activity increases with the increase of SnO2 content. Moreover, synthesized TiO2-SnO2 samples have higher adsorption and photocatalytic activity than the commercial titania powder P25 TiO2AEROXIDE® towards congo red degradation.

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水热法制备TiO2-SnO2纳米复合材料

采用简单的低温水热法制备了不同配比(1、3、5、10 mas%的氧化锡)的tio2 - sno2纳米复合材料。采用x射线衍射、扫描电镜、傅里叶变换红外光谱和N2吸附-解吸法对合成的纳米粉体进行了分析。所得复合材料为纳米晶，晶粒尺寸在5 ~ 7 nm之间。结果表明，由于Sn4+离子的掺入，合成的纳米复合材料由锐钛矿型和金红石型TiO2-SnO2固溶体组成。结果表明，氧化锡的存在增加了纳米复合材料的比表面积。结果表明，TiO2-SnO2纳米复合材料对阴离子染料(刚果红)的光催化性能优于对阳离子染料(亚甲基蓝)的光催化性能，且其光催化活性随SnO2含量的增加而增加。此外，合成的TiO2-SnO2样品对刚果红降解的吸附和光催化活性高于商用二氧化钛粉P25 TiO2AEROXIDE®。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP)

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