Photoelectrochemical response of TiO2 pigmented membranes
Photoelectrochemical response of TiO2 pigmented membranes
复制标题
TiO2 着色膜的光电化学响应
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
R. Potter
中科院分区：
文献类型：
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作者：
J. Li;L. Peter;R. Potter
二氧化钛颜料分散在用于玻璃碳电极的多孔硝化棉基质中。在近紫外区用单色光照射这些涂层电极，产生的光电流已被证明对应于被照射的二氧化钛颗粒产生的过氧化氢的氧化或还原。环盘和脉冲光电流测量已经被用来研究光化学反应如何通过扩散耦合到过氧化氢的电化学检测。研究结果表明，半导体分散体的光催化性能可以用类似的涂层电极来表征。
Titanium dioxide pigments have been dispersed in a porous nitrocellulose matrix applied to a vitreous carbon electrode. Illumination of these coated electrodes with monochromatic light in the near UV region gives rise to photocurrents which have been shown to correspond to the oxidation or reduction of hydrogen peroxide produced at the illuminated titanium dioxide particles. Ring-disc and pulsed photocurrent measurements have been used to investigate how the photochemical reaction is coupled by diffusion to the electrochemical detection of hydrogen peroxide. The results of the study suggest that the photocatalytic properties of semi-conductor dispersions may be characterized using similar coated electrodes.