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Catalysts 2016, 6(8), 114; doi:10.3390/catal6080114

A Highly Efficient Dual Rotating Disks Photocatalytic Fuel Cell with Wedged Surface TiO2 Nanopore Anode and Hemoglobin Film Cathode

1
School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800 Dong Chuan Rd., Shanghai 200240, China
2
Department of Sciences, John Jay College and the Graduate Center, The City University of New York, New York, NY 10019, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Dionysios (Dion) Demetriou Dionysiou
Received: 15 April 2016 / Revised: 19 July 2016 / Accepted: 19 July 2016 / Published: 4 August 2016
(This article belongs to the Special Issue Photocatalytic Wastewater Treatment)
View Full-Text   |   Download PDF [6402 KB, uploaded 4 August 2016]   |  

Abstract

In this study, a dual rotating-disk photocatalytic fuel cell using TiO2 on Ti plate with a wedged surface as the anode and hemoglobin (Hb) on graphite as the cathode was investigated and found to show excellent performance of simultaneous organic pollutant degradation and electricity generation. This study is based on a well-developed photocatalytic fuel cell equipped with dual rotating disks for wastewater treatment that we developed previously, and the innovation of this new device is using a hemoglobin on graphite cathode for in situ hydrogen peroxide (H2O2) generation. The result proved with confidence that H2O2 was generated in situ on a cathode surface with the exited electron transferred from organic oxidation in a photoanodic half cell, and the organic pollutants were removed by the reaction with H2O2 and ·OH in a cathodic half cell. This design uses the invalid excited electron from the photoanode and enhances the overall performance of Rhodamine B degradation compared with the cells using the cathode without Hb. Compared with traditional photocatalytic reactors, the photocatalytic fuel cell developed above shows much better utilization efficiency of incident light and a higher degradation performance of organic pollutants and a larger photocurrent. View Full-Text
Keywords: TiO2 wedged surface nanopore anode; hemoglobin-graphite cathode; dual rotating-disk photocatalytic fuel cell; organic pollutants; photocurrent TiO2 wedged surface nanopore anode; hemoglobin-graphite cathode; dual rotating-disk photocatalytic fuel cell; organic pollutants; photocurrent
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MDPI and ACS Style

Yang, C.; He, Y.; Li, K.; Ying, D.; Yao, Y.; Tang, T.; Wang, Y.; Jia, J. A Highly Efficient Dual Rotating Disks Photocatalytic Fuel Cell with Wedged Surface TiO2 Nanopore Anode and Hemoglobin Film Cathode. Catalysts 2016, 6, 114.

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