Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
577215 | Journal of Hazardous Materials | 2013 | 7 Pages |
Abstract
Direct discharging great quantities of organics into water-body not only causes serious environmental pollution but also wastes energy sources. In this paper, a solar responsive dual photoelectrode photocatalytic fuel cell (PFC2) based on TiO2/Ti photoanode and Cu2O/Cu photocathode was designed for hazardous organics treatment with simultaneous electricity generation. Under solar irradiation, the interior bias voltage produced for the Fermi level difference between photoelectrodes drives photoelectrons of TiO2/Ti photoanode to combine with photoholes of Cu2O/Cu photocathode through external circuit thus generating electricity. In the meantime, organics are decomposed by photoholes remained at TiO2/Ti photoanode. By using various hazardous organics including azo dyes as model pollutants, the PFC showed high converting performance of organics into electricity. For example, in 0.05Â M phenol solution, a short-circuit current density 0.23Â mAÂ cmâ2, open-circuit voltage 0.49Â V, maximum power output 0.36Â 10â4Â WÂ cmâ2 was achieved. On the other hand, removal rate of chroma reached 67%, 87% and 63% in 8Â h for methyl orange, methylene blue, Congo red, respectively.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Health and Safety
Authors
Jianyong Li, Jinhua Li, Quanpeng Chen, Jing Bai, Baoxue Zhou,