Enhancement of photocatalytic degradation by combination of light illumination and bias voltages toward anti-virus coating applications

IF 0.5 4区 工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC
Keita Shimakura, Sho Saeki, Yuta Segawa, Taizo Kobayashi
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引用次数: 0

Abstract

In this work, oxidative decomposition reaction of organic reactant on TiO2 surface was investigated under soaking conditions by combination of applying voltages and light illumination. Since carriers of TiO2 thin films originate from point defects such as oxygen vacancies, reactive carriers possibly exist on TiO2 thin films even under room light illuminating condition and dark condition. Thus, enhancement degrees of photooxidation by applying bias voltages onto TiO2 thin films were compared under dark, visible light illumination and UV illumination conditions. Bias voltages were applied to localize the photogenerated carriers at the vicinity of TiO2 surface for enhancing photooxidation. Sol-gel derived TiO2 thin films with porous nano structure exhibited a stronger oxidative decomposition reaction than sputter-deposited TiO2 thin films.

光照明和偏置电压相结合增强光催化降解对抗病毒涂层应用的影响
本文通过施加电压和光照相结合的方法,研究了有机反应物在TiO2表面的氧化分解反应。由于TiO2薄膜的载流子来源于氧空位等点缺陷,因此即使在室内光照条件和黑暗条件下,TiO2薄膜上也可能存在活性载流子。因此,比较了在黑暗、可见光和紫外线照射条件下施加偏置电压对TiO2薄膜的光氧化增强程度。施加偏置电压使光生载流子定位在TiO2表面附近,以增强光氧化作用。溶胶凝胶法制备的多孔纳米TiO2薄膜比溅射法制备的TiO2薄膜表现出更强的氧化分解反应。
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
Electronics and Communications in Japan
Electronics and Communications in Japan 工程技术-工程:电子与电气
CiteScore
0.60
自引率
0.00%
发文量
45
审稿时长
6-12 weeks
期刊介绍: Electronics and Communications in Japan (ECJ) publishes papers translated from the Transactions of the Institute of Electrical Engineers of Japan 12 times per year as an official journal of the Institute of Electrical Engineers of Japan (IEEJ). ECJ aims to provide world-class researches in highly diverse and sophisticated areas of Electrical and Electronic Engineering as well as in related disciplines with emphasis on electronic circuits, controls and communications. ECJ focuses on the following fields: - Electronic theory and circuits, - Control theory, - Communications, - Cryptography, - Biomedical fields, - Surveillance, - Robotics, - Sensors and actuators, - Micromachines, - Image analysis and signal analysis, - New materials. For works related to the science, technology, and applications of electric power, please refer to the sister journal Electrical Engineering in Japan (EEJ).
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