Stable and Efficient Photoinduced Charge Transfer of MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline Photoelectrode in Highly Acidic Solution
Tailoring conductive polymers with inorganic photocatalysts, which provide photoinduced electron-hole generation, have significantly enhanced composites leading to excellent photoelectrodes. In this work, MnFe<sub>2</sub>O<sub>4</sub> nanoparticles prepared by a hydrothermal...
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MDPI AG
2021-12-01
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| Series: | Colloids and Interfaces |
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| Online Access: | https://www.mdpi.com/2504-5377/6/1/1 |
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| author | Mohammed Alsultan Shaymaa Al-Rubaye Amar Al-Keisy Gerhard F. Swiegers Intisar Ghanim Taha |
| author_facet | Mohammed Alsultan Shaymaa Al-Rubaye Amar Al-Keisy Gerhard F. Swiegers Intisar Ghanim Taha |
| author_sort | Mohammed Alsultan |
| collection | DOAJ |
| description | Tailoring conductive polymers with inorganic photocatalysts, which provide photoinduced electron-hole generation, have significantly enhanced composites leading to excellent photoelectrodes. In this work, MnFe<sub>2</sub>O<sub>4</sub> nanoparticles prepared by a hydrothermal method were combined with polyaniline to prepare mixed (hybrid) slurries, which were cast onto flexible FTO to prepare photoelectrodes. The resulting photoelectrodes were characterized by XRD, FESEM, HRTEM and UV-VIS. The photoelectrochemical performance was investigated by linear sweep voltammetry and chronoamperometry. The photocurrent achieved by MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline was 400 μA/cm<sup>2</sup> at 0.8 V vs. Ag/AgCl in Na<sub>2</sub>SO<sub>4</sub> (pH = 2) at 100 mW/cm<sup>2</sup>, while polyaniline alone achieved only 25 μA/cm<sup>2</sup> under the same conditions. The best MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline displayed an incident photon-to-current conversion efficiency (IPCE) and applied bias photon-to-current efficiency (ABPE) of 60% at 405 nm wavelength, and 0.17% at 0.8 V vs. Ag/AgCl, respectively. High and stable photoelectrochemical performance was achieved for more than 900 s in an acidic environment. |
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| last_indexed | 2024-04-12T22:42:13Z |
| publishDate | 2021-12-01 |
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| series | Colloids and Interfaces |
| spelling | doaj.art-0bf44b1cc5dc41cca17cf72195d752722022-12-22T03:13:39ZengMDPI AGColloids and Interfaces2504-53772021-12-0161110.3390/colloids6010001Stable and Efficient Photoinduced Charge Transfer of MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline Photoelectrode in Highly Acidic SolutionMohammed Alsultan0Shaymaa Al-Rubaye1Amar Al-Keisy2Gerhard F. Swiegers3Intisar Ghanim Taha4Department of Science, Collage of Basic Education, University of Mosul, Mosul 41002, IraqDepartment of Physics, College of Education for Pure Science, University of Babylon, Babylon 51002, IraqNanotechnology and Advanced Materials Research Center, University of Technology, Baghdad 10066, IraqARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW 2522, AustraliaDepartment of Science, Collage of Basic Education, University of Mosul, Mosul 41002, IraqTailoring conductive polymers with inorganic photocatalysts, which provide photoinduced electron-hole generation, have significantly enhanced composites leading to excellent photoelectrodes. In this work, MnFe<sub>2</sub>O<sub>4</sub> nanoparticles prepared by a hydrothermal method were combined with polyaniline to prepare mixed (hybrid) slurries, which were cast onto flexible FTO to prepare photoelectrodes. The resulting photoelectrodes were characterized by XRD, FESEM, HRTEM and UV-VIS. The photoelectrochemical performance was investigated by linear sweep voltammetry and chronoamperometry. The photocurrent achieved by MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline was 400 μA/cm<sup>2</sup> at 0.8 V vs. Ag/AgCl in Na<sub>2</sub>SO<sub>4</sub> (pH = 2) at 100 mW/cm<sup>2</sup>, while polyaniline alone achieved only 25 μA/cm<sup>2</sup> under the same conditions. The best MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline displayed an incident photon-to-current conversion efficiency (IPCE) and applied bias photon-to-current efficiency (ABPE) of 60% at 405 nm wavelength, and 0.17% at 0.8 V vs. Ag/AgCl, respectively. High and stable photoelectrochemical performance was achieved for more than 900 s in an acidic environment.https://www.mdpi.com/2504-5377/6/1/1conductive polymersphotoelectrochemicalMnFe<sub>2</sub>O<sub>4</sub>/Polyanilineacidic environment |
| spellingShingle | Mohammed Alsultan Shaymaa Al-Rubaye Amar Al-Keisy Gerhard F. Swiegers Intisar Ghanim Taha Stable and Efficient Photoinduced Charge Transfer of MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline Photoelectrode in Highly Acidic Solution Colloids and Interfaces conductive polymers photoelectrochemical MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline acidic environment |
| title | Stable and Efficient Photoinduced Charge Transfer of MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline Photoelectrode in Highly Acidic Solution |
| title_full | Stable and Efficient Photoinduced Charge Transfer of MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline Photoelectrode in Highly Acidic Solution |
| title_fullStr | Stable and Efficient Photoinduced Charge Transfer of MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline Photoelectrode in Highly Acidic Solution |
| title_full_unstemmed | Stable and Efficient Photoinduced Charge Transfer of MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline Photoelectrode in Highly Acidic Solution |
| title_short | Stable and Efficient Photoinduced Charge Transfer of MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline Photoelectrode in Highly Acidic Solution |
| title_sort | stable and efficient photoinduced charge transfer of mnfe sub 2 sub o sub 4 sub polyaniline photoelectrode in highly acidic solution |
| topic | conductive polymers photoelectrochemical MnFe<sub>2</sub>O<sub>4</sub>/Polyaniline acidic environment |
| url | https://www.mdpi.com/2504-5377/6/1/1 |
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