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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ng, How Y. Lefebvre, Olivier Chang, In Seop Chua, Daniel H. C. Tang, Zhe Fung, Martin P. H. |
| Description | Country affiliation: Singapore Author Affiliation: Lefebvre O ( Centre for Water Research, Department of Civil and Environmental Engineering, National University of Singapore, 2 Engineering Drive 1, Singapore 117576, Singapore.) |
| Abstract | Microbial fuel cells (MFCs) could potentially be utilized for a variety of applications in the future from biosensors to wastewater treatment. However, the amount of costly platinum (Pt) used as a catalyst should be minimized via innovative deposition methods such as sputtering. In addition, alternative and low-cost catalysts, such as cobalt (Co), should be sought. In this study, ultra low Pt or Co cathodes (0.1 mg cm(-2)) were manufactured by plasma sputtering deposition and scanning electron micrographs revealed nano-clusters of metal catalyst in a porous structure favorable to the three-phase heterogeneous catalytic reaction. When operated in single-chamber air-cathode MFCs, sputtered-Co cathodes generated on average the same power as sputtered-Pt cathodes (0.27 mW cell(-1)) and only 27% less than conventional Pt-ink cathodes with a catalyst load 5 times higher (0.5 mg cm(-2)). Finally, microscopy and molecular analyses showed evidence of biocatalysis activity on metal-free cathodes. |
| ISSN | 09565663 |
| Issue Number | 1 |
| Volume Number | 31 |
| e-ISSN | 18734235 |
| Journal | Biosensors and Bioelectronics |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-01-15 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Bioelectric Energy Sources Microbiology Cobalt Chemistry Electrodes Plasma Gases Platinum Catalysis Equipment Design Equipment Failure Analysis Journal Article Discipline Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Medicine Biophysics Biomedical Engineering Biotechnology Electrochemistry |
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