Electrocatalytic, Photoelectrochemical, and Sensor Properties of Nanostructured TiO2 Films Modified with Lanthanum Ions

IF 0.8 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY
V. S. Vorobets, G. Ya. Kolbasov, I. A. Medyk, S. V. Karpenko, T. V. Kryshchuk, O. P. Ivanenko
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引用次数: 0

Abstract

The effect of modification of nanostructured TiO2 films with lanthanum ions on their electrocatalytic, photoelectrochemical, and sensor properties is investigated. La-TiO2 films were prepared by sol–gel method and characterized by X-ray diffraction analysis, X-ray photoelectron spectroscopy, scanning electron microscopy and photoelectrochemical current spectroscopy. It is shown that modification with lanthanum ions leads to an increase in the photosensitivity of La-TiO2 electrodes in the UV range and a batochromic shift in the photocurrent spectra, and also improves their catalytic activity in the reaction of oxygen reduction and sensor properties in determining the concentration of heavy metal ions in liquids.

Abstract Image

镧离子修饰纳米TiO2薄膜的电催化、光电化学和传感器性能
研究了镧离子修饰纳米TiO2薄膜对其电催化、光电化学和传感器性能的影响。采用溶胶-凝胶法制备了La-TiO2薄膜,并用x射线衍射分析、x射线光电子能谱、扫描电镜和光电化学电流谱对其进行了表征。结果表明,镧离子修饰使La-TiO2电极在紫外范围内光敏性提高,光电流谱发生色移,并提高了其氧还原反应的催化活性和测定液体中重金属离子浓度的传感器性能。
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来源期刊
Theoretical and Experimental Chemistry
Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.60
自引率
10.00%
发文量
30
审稿时长
6-12 weeks
期刊介绍: Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.
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