光降解
光催化
化学
燃料电池
环境科学
光化学
废物管理
环境化学
化学工程
催化作用
有机化学
工程类
作者
Sin-Li Lee,Li-Ngee Ho,Soon‐An Ong,Yee‐Shian Wong,Chun-Hong Voon,Wan Fadhilah Khalik,Nik Athirah Yusoff,Norshahrizan Nordin
出处
期刊:Chemosphere
[Elsevier]
日期:2018-10-01
卷期号:209: 935-943
被引量:24
标识
DOI:10.1016/j.chemosphere.2018.06.157
摘要
Reactive green 19, acid orange 7 and methylene blue are employed as the organic pollutants in this work. A photocatalytic fuel cell is constructed based on the idea of immobilizing zinc oxide onto zinc photoanode and platinum loaded carbon cathode, both evaluated under sunlight and ultraviolet irradiation, respectively. Influence of light and dye structures on the performance of photocatalytic fuel cell are examined. With reactive green 19, 93% and 86% of color removal are achieved after 8 h of photocatalytic fuel cell treatment under sunlight and ultraviolet irradiation, respectively. The decolorization rate of diazo reactive green 19 is higher than acid orange 7 (monoazo dye) when both dyes are treated by photocatalytic fuel cell under sunlight and ultraviolet irradiation, as the electron releasing groups (-NH-triazine) allow reactive green 19 easier to be oxidized. Comparatively, acid orange 7 is less favorable to be oxidized. The degradation of methylene blue is enhanced under sunlight irradiation due to the occurrence of self-sensitized photodegradation. When methylene blue is employed in the photocatalytic fuel cell under sunlight irradiation, the short circuit current (0.0129 mA cm-2) and maximum power density (0.0032 mW cm-2) of photocatalytic fuel cell greatly improved.
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