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.

中文翻译：

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通过光照和偏置电压的组合增强光催化降解，用于抗病毒涂层应用

在这项工作中，通过施加电压和光照相结合，研究了在浸泡条件下有机反应物在TiO ₂表面的氧化分解反应。由于TiO ₂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，TiO _{2薄膜上也可能存在活性载流子。}因此，比较了在黑暗、可见光照明和紫外照明条件下通过将偏压施加到TiO ₂薄膜上来增强光氧化的程度。施加偏置电压以将光生载流子局域化在TiO ₂表面附近以增强光氧化。溶胶-凝胶衍生的二氧化钛_{2具有多孔纳米结构的薄膜比溅射沉积的TiO 2}薄膜表现出更强的氧化分解反应。