Vitali Grinberg, Victor Emets, Alexey Shapagin, Aleksey Averin, Andrei Shiryaev
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引用次数: 0
Abstract
Nanocrystalline TiO2 nanotube electrodes were fabricated by electrochemically anodizing the titanium in the electrolyte with an ethylene glycol with addition of 0.5% by weight NH4F and amount of water (2% w/w). Structural properties of the obtained coatings have been investigated by scanning electron microscopy and Raman and XRD spectroscopy. When illuminated by a sunlight simulator, these electrodes demonstrate high activity in photoelectrochemical degradation of anions of phenylacetic acid from aqueous solutions of 0.1 M Na2SO4. Results of intensity-modulated photocurrent spectroscopy show that the photoelectrocatalysis efficiency is explained by suppression of the electron–hole pair recombination and increase in the rate of photo-induced charge transfer. Thus, nanotubes from TiO2 can be considered as effective photoanodes.
在电解液中加入0.5%重量的NH4F和2% w/w的水，用乙二醇对钛进行电化学阳极氧化，制备纳米晶TiO2纳米管电极。采用扫描电子显微镜、拉曼光谱和x射线衍射光谱研究了涂层的结构性能。在阳光模拟器照射下，这些电极在0.1 M Na2SO4水溶液中对苯乙酸阴离子的光电降解中表现出很高的活性。强度调制光电流谱分析结果表明，光电催化效率的提高可以通过抑制电子-空穴对复合和光致电荷转移速率的提高来解释。因此，由TiO2制成的纳米管可以被认为是有效的光阳极。
期刊介绍：
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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