Effect of Surface Acidity of Codoped C,S-TiO2 on Their Photocatalytic Properties in the Hydrogen Evolution and Ethanol Oxidation Processes

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Theoretical and Experimental Chemistry Pub Date : 2024-01-13 DOI:10.1007/s11237-024-09784-x

N. I. Romanovska, G. V. Korzhak, V. M. Grebennikov, O. V. Shulzshenko, P. S. Yaremov, N. I. Ermokhina, P. A. Manoryk

引用次数: 0

Abstract

Codoped C,S-TiO₂ nanostructures with similar structural and dimensional characteristics and different surface acidity have been obtained using a hydrothermal sol–gel method in the presence thiourea or sulfuric acid. It is established that C,S-TiO₂ obtained in the presence of H₂SO₄ are characterized with acidity of 0.45 mmol/g that results in a high photocatalytic activity in the process of ethanol oxidation. It is shown that C,S-TiO₂ obtained in the presence of thiourea, exhibits photocatalytic activity in the reaction of hydrogen evolution under UV and visible light irradiation, which increases with surface acidity decreasing.

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共掺 C，S-二氧化钛的表面酸度对其在氢气挥发和乙醇氧化过程中光催化性能的影响

在硫脲或硫酸存在下，通过水热溶胶-凝胶法获得了具有相似结构和尺寸特征以及不同表面酸度的掺杂 C，S-二氧化钛纳米结构。结果表明，在 H2SO4 存在下获得的 C,S-TiO2 酸度为 0.45 mmol/g，在乙醇氧化过程中具有很高的光催化活性。研究表明，在硫脲存在下获得的 C,S-二氧化钛在紫外线和可见光照射下的氢进化反应中表现出光催化活性，这种活性随着表面酸度的降低而增加。

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

Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.60

自引率

10.00%

发文量

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.