22 May 2017 Hydrogen and electricity production in a light-assisted microbial photoelectrochemical cell with CaFe2O4 photocathode
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Abstract
A microbial photoelectrochemical cell (MPEC) was designed with a p-type CaFe 2 O 4 semiconductor as the photoelectrode for simultaneous hydrogen and electricity production under light illumination. The CaFe 2 O 4 photoelectrode was synthesized by the sol–gel method and well characterized by x-ray diffraction, field emission scanning electron microscope, and UV–Vis–NIR spectrophotometer. The linear sweep voltammogram of the CaFe 2 O 4 photoelectrode presented the cathodic photocurrent output. For the MPEC, with an external resistance of 2000 Ω, the maximum power density of 143    mW · m 2 was obtained. Furthermore, with an external resistance of 100 Ω, the maximum hydrogen production rate of 6.7    μ L · h 1 · cm 2 could be achieved. The MPEC with CaFe 2 O 4 photocathode was compared to MPEC with other photocathodes as well as photocatalytic water splitting technology.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Qing-Yun Chen, Qing-Yun Chen, Kai Zhang, Kai Zhang, Jian-Shan Liu, Jian-Shan Liu, Yun-Hai Wang, Yun-Hai Wang, } "Hydrogen and electricity production in a light-assisted microbial photoelectrochemical cell with CaFe2O4 photocathode," Journal of Photonics for Energy 7(2), 026501 (22 May 2017). https://doi.org/10.1117/1.JPE.7.026501 . Submission: Received: 14 February 2017; Accepted: 8 May 2017
Received: 14 February 2017; Accepted: 8 May 2017; Published: 22 May 2017
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