Photocatalytic properties of TiO2 nanostructures of different morphology modified with various modifiers

IF 1 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Proceedings of the Estonian Academy of Sciences Pub Date : 2019-01-01 DOI:10.3176/PROC.2019.2.08

R. Drunka, J. Grabis, D. Jankoviča, D. Rašmane, A. Krumina

引用次数: 0

Abstract

Synthesis of TiO2 nanotube coatings, nanoporous coatings, and nanofibres by using titanium anodizing, microplasma electrolytic oxidation, and microwave-assisted hydrothermal synthesis in different regimes was studied. Optimal conditions for each of the methods for obtaining nanostructures were determined. The obtained TiO2 nanofibres and nanotube and nanoporous coatings were modified with Au, Ag, Pt, Pd, S, WO3, and Eu2O3, nanoparticles to improve photocatalytic activity under ultraviolet and visible light irradiation. Photocatalytic properties of photocatalysts were tested by the degradation of methylene blue solution under the influence of ultraviolet and visible light irradiation. The obtained modified photocatalysts exhibited higher photocatalytic activity than pure TiO2 nanostructured photocatalysts. Properties of modified photocatalysts obtained with different methods are compared.

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不同改性剂对不同形貌TiO2纳米结构光催化性能的影响

研究了钛阳极氧化、微等离子体电解氧化和微波辅助水热法在不同工艺条件下制备TiO2纳米管涂层、纳米多孔涂层和纳米纤维。确定了每种方法获得纳米结构的最佳条件。采用Au、Ag、Pt、Pd、S、WO3和Eu2O3等纳米粒子对制备的TiO2纳米纤维、纳米管和纳米孔涂层进行改性，提高了紫外和可见光下的光催化活性。通过紫外光和可见光对亚甲基蓝溶液的降解，测试了光催化剂的光催化性能。得到的改性光催化剂比纯TiO2纳米结构光催化剂具有更高的光催化活性。比较了不同方法制备的改性光催化剂的性能。

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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来源期刊

Proceedings of the Estonian Academy of Sciences 综合性期刊-综合性期刊

CiteScore

1.80

自引率

22.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Proceedings of the Estonian Academy of Sciences is an international scientific open access journal published by the Estonian Academy of Sciences in collaboration with the University of Tartu, Tallinn University of Technology, Tallinn University, and the Estonian University of Life Sciences. The journal publishes primary research and review papers in the English language. All articles are provided with short Estonian summaries. All papers to be published in the journal are peer reviewed internationally. The journal is open to word-wide scientific community for publications in all fields of science represented at the Estonian Academy of Sciences and having certain connection with our part of the world, North Europe and the Baltic area in particular.