Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel Cell
The present study explores the use of carbon dots coated with Iron (II, III) oxide (Fe<sub>3</sub>O<sub>4</sub>) for its application as an anode in microbial fuel cells (MFC). Fe<sub>3</sub>O<sub>4</sub>@PSA-C was synthesized using a hydrothermal-assis...
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MDPI AG
2022-09-01
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| author | Babita Tripathi Soumya Pandit Aparna Sharma Sunil Chauhan Abhilasha Singh Mathuriya Pritam Kumar Dikshit Piyush Kumar Gupta Ram Chandra Singh Mohit Sahni Kumud Pant Satyendra Singh |
| author_facet | Babita Tripathi Soumya Pandit Aparna Sharma Sunil Chauhan Abhilasha Singh Mathuriya Pritam Kumar Dikshit Piyush Kumar Gupta Ram Chandra Singh Mohit Sahni Kumud Pant Satyendra Singh |
| author_sort | Babita Tripathi |
| collection | DOAJ |
| description | The present study explores the use of carbon dots coated with Iron (II, III) oxide (Fe<sub>3</sub>O<sub>4</sub>) for its application as an anode in microbial fuel cells (MFC). Fe<sub>3</sub>O<sub>4</sub>@PSA-C was synthesized using a hydrothermal-assisted probe sonication method. Nanoparticles were characterized with XRD, SEM, FTIR, and RAMAN Spectroscopy. Different concentrations of Fe<sub>3</sub>O<sub>4</sub>- carbon dots (0.25, 0.5, 0.75, and 1 mg/cm<sup>2</sup>) were coated onto the graphite sheets (Fe<sub>3</sub>O<sub>4</sub>@PSA-C), and their performance in MFC was evaluated. Cyclic voltammetry (CV) of Fe<sub>3</sub>O<sub>4</sub>@PSA-C (1 mg/cm<sup>2</sup>) modified anode indicated oxidation peaks at −0.26 mV and +0.16 mV, respectively, with peak currents of 7.7 mA and 8.1 mA. The fluxes of these anodes were much higher than those of other low-concentration Fe<sub>3</sub>O<sub>4</sub>@PSA-C modified anodes and the bare graphite sheet anode. The maximum power density (Pmax) was observed in MFC with a 1 mg/cm<sup>2</sup> concentration of Fe<sub>3</sub>O<sub>4</sub>@PSA-C was 440.01 mW/m<sup>2</sup>, 1.54 times higher than MFCs using bare graphite sheet anode (285.01 mW/m<sup>2</sup>). The elevated interaction area of carbon dots permits pervasive Fe<sub>3</sub>O<sub>4</sub> crystallization providing enhanced cell attachment capability of the anode, boosting the biocompatibility of Fe<sub>3</sub>O<sub>4</sub>@PSA-C. This significantly improved the performance of the MFC, making Fe<sub>3</sub>O<sub>4</sub>@PSA-C modified graphite sheets a good choice as an anode for its application in MFC. |
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| spelling | doaj.art-14ef2a3dbbe34e51b28bc158a87632522023-11-23T15:31:25ZengMDPI AGCatalysts2073-43442022-09-01129104010.3390/catal12091040Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel CellBabita Tripathi0Soumya Pandit1Aparna Sharma2Sunil Chauhan3Abhilasha Singh Mathuriya4Pritam Kumar Dikshit5Piyush Kumar Gupta6Ram Chandra Singh7Mohit Sahni8Kumud Pant9Satyendra Singh10Department of Physics, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida 201310, IndiaBiopositive Lab, Department of Life Sciences, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida 201310, IndiaBiopositive Lab, Department of Life Sciences, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida 201310, IndiaDepartment of Physics, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida 201310, IndiaMinistry of Environment, Forest and Climate Change, Indira Paryavaran Bhawan, Jor Bagh, New Delhi 110003, IndiaDepartment of Bio-Technology, Koneru Lakshmaiah Education Foundation, Vaddeswaram 522302, IndiaBiopositive Lab, Department of Life Sciences, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida 201310, IndiaDepartment of Physics, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida 201310, IndiaDepartment of Physics, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida 201310, IndiaDepartment of Biotechnology, Graphic Era Deemed to be University, Dehradun, Uttarakhand 248002, IndiaSpecial Centre for Nanoscience, Jawaharlal Nehru University, New Delhi 110067, IndiaThe present study explores the use of carbon dots coated with Iron (II, III) oxide (Fe<sub>3</sub>O<sub>4</sub>) for its application as an anode in microbial fuel cells (MFC). Fe<sub>3</sub>O<sub>4</sub>@PSA-C was synthesized using a hydrothermal-assisted probe sonication method. Nanoparticles were characterized with XRD, SEM, FTIR, and RAMAN Spectroscopy. Different concentrations of Fe<sub>3</sub>O<sub>4</sub>- carbon dots (0.25, 0.5, 0.75, and 1 mg/cm<sup>2</sup>) were coated onto the graphite sheets (Fe<sub>3</sub>O<sub>4</sub>@PSA-C), and their performance in MFC was evaluated. Cyclic voltammetry (CV) of Fe<sub>3</sub>O<sub>4</sub>@PSA-C (1 mg/cm<sup>2</sup>) modified anode indicated oxidation peaks at −0.26 mV and +0.16 mV, respectively, with peak currents of 7.7 mA and 8.1 mA. The fluxes of these anodes were much higher than those of other low-concentration Fe<sub>3</sub>O<sub>4</sub>@PSA-C modified anodes and the bare graphite sheet anode. The maximum power density (Pmax) was observed in MFC with a 1 mg/cm<sup>2</sup> concentration of Fe<sub>3</sub>O<sub>4</sub>@PSA-C was 440.01 mW/m<sup>2</sup>, 1.54 times higher than MFCs using bare graphite sheet anode (285.01 mW/m<sup>2</sup>). The elevated interaction area of carbon dots permits pervasive Fe<sub>3</sub>O<sub>4</sub> crystallization providing enhanced cell attachment capability of the anode, boosting the biocompatibility of Fe<sub>3</sub>O<sub>4</sub>@PSA-C. This significantly improved the performance of the MFC, making Fe<sub>3</sub>O<sub>4</sub>@PSA-C modified graphite sheets a good choice as an anode for its application in MFC.https://www.mdpi.com/2073-4344/12/9/1040bioanodecarbon dotsiron (ii, iii) oxidepower densitymicrobial fuel cellinternal resistance |
| spellingShingle | Babita Tripathi Soumya Pandit Aparna Sharma Sunil Chauhan Abhilasha Singh Mathuriya Pritam Kumar Dikshit Piyush Kumar Gupta Ram Chandra Singh Mohit Sahni Kumud Pant Satyendra Singh Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel Cell Catalysts bioanode carbon dots iron (ii, iii) oxide power density microbial fuel cell internal resistance |
| title | Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel Cell |
| title_full | Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel Cell |
| title_fullStr | Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel Cell |
| title_full_unstemmed | Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel Cell |
| title_short | Modification of Graphite Sheet Anode with Iron (II, III) Oxide-Carbon Dots for Enhancing the Performance of Microbial Fuel Cell |
| title_sort | modification of graphite sheet anode with iron ii iii oxide carbon dots for enhancing the performance of microbial fuel cell |
| topic | bioanode carbon dots iron (ii, iii) oxide power density microbial fuel cell internal resistance |
| url | https://www.mdpi.com/2073-4344/12/9/1040 |
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