文章基本信息

标题：Cobalt-doped Titanium Dioxide Photochemical Fuel Cell for Wastewater Purification
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作者：Ahmed M. Harara ; Jialun Wang ; Michael J. Nguyen 等
期刊名称：Journal of Scientific Research and Reports
电子版ISSN：2320-0227
出版年度：2014
卷号：3
期号：24
页码：3068-3079
DOI：10.9734/JSRR/2014/13408
出版社：Sciencedomain International
摘要：In this work, a photovoltaic electrochemical fuel cell consisting of a cobalt-titanate (CoTiO₃) anode and a platinum (Pt) cathode was utilized for the decomposition of environmentally hazardous materials in wastewater. The CoTiO3 nanotubes (NTs) were prepared through electrochemical oxidation of pure titanium (Ti) strips. The titanium dioxide (TiO₂) nanotubes were doped with a cobalt salt via electrospinning followed by annealing to form CoTiO₃. The addition of cobalt to the TiO₂NTs was tested to observe if photochemical catalytic properties increased in the presence of ultraviolet and visible light. The increases in photochemical catalytic properties were validated by comparing the measured electric potential differences (âˆ† E ) between the CoTiO₃ test samples, and the TiO₂ control samples. It is concluded that the cobalt doped anode greatly increases the response of the fuel cell system to visible light stimulus. This allows for greater utility generation capacity and faster photochemical catalytic reaction at the anode surface. The application of cobalt doped titanium dioxide anodes in photovoltaic electrochemical fuel cells increases the photoelectric energy conversion efficiency and waste decomposition rate. There is potential to scale the system up for practical applications.
关键词：Nanotube; doping; photoelectrochemical fuel cell; electricity generation; open circuit voltage measurement; wastewater purification.