Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
Abstract In this study, a nanocomposite of palladium supported graphene oxide (GO)/metal–organic framework (MOF) was prepared using electroless deposition of Pd on GO followed by impregnation method of Pd@GO and MOF. The prepared materials were characterized with various analytical techniques and th...
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Nature Portfolio
2021-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-96536-9 |
| _version_ | 1818422422069575680 |
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| author | Mogwasha D. Makhafola Kwena D. Modibane Kabelo E. Ramohlola Thabiso C. Maponya Mpitloane J. Hato Katlego Makgopa Emmanuel I. Iwuoha |
| author_facet | Mogwasha D. Makhafola Kwena D. Modibane Kabelo E. Ramohlola Thabiso C. Maponya Mpitloane J. Hato Katlego Makgopa Emmanuel I. Iwuoha |
| author_sort | Mogwasha D. Makhafola |
| collection | DOAJ |
| description | Abstract In this study, a nanocomposite of palladium supported graphene oxide (GO)/metal–organic framework (MOF) was prepared using electroless deposition of Pd on GO followed by impregnation method of Pd@GO and MOF. The prepared materials were characterized with various analytical techniques and their applications as HER electrocatalysts were evaluated using cyclic voltammetry (CV), Tafel plots, and turn over frequencies (TOFs). The HER results showed a radical increment of H2 production in the nanocomposite through the Volmer reaction together with Heyrovsky or Tafel mechanism. This disclosed that the addition of Pd@GO/MOF in the electrolytic system possessed better catalytic characteristics with enhanced current density which may open a new way for hydrogen production and storage via HER. |
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| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T13:26:00Z |
| publishDate | 2021-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-df024e1e0f6644048a0a046d0a9ac77e2022-12-21T22:59:50ZengNature PortfolioScientific Reports2045-23222021-08-0111111610.1038/s41598-021-96536-9Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reactionMogwasha D. Makhafola0Kwena D. Modibane1Kabelo E. Ramohlola2Thabiso C. Maponya3Mpitloane J. Hato4Katlego Makgopa5Emmanuel I. Iwuoha6Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop)Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop)Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop)Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop)Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, University of Limpopo (Turfloop)Department of Chemistry, Faculty of Science, Tshwane University of Technology (Acardia Campus)SensorLab, Chemistry Department, University of the Western CapeAbstract In this study, a nanocomposite of palladium supported graphene oxide (GO)/metal–organic framework (MOF) was prepared using electroless deposition of Pd on GO followed by impregnation method of Pd@GO and MOF. The prepared materials were characterized with various analytical techniques and their applications as HER electrocatalysts were evaluated using cyclic voltammetry (CV), Tafel plots, and turn over frequencies (TOFs). The HER results showed a radical increment of H2 production in the nanocomposite through the Volmer reaction together with Heyrovsky or Tafel mechanism. This disclosed that the addition of Pd@GO/MOF in the electrolytic system possessed better catalytic characteristics with enhanced current density which may open a new way for hydrogen production and storage via HER.https://doi.org/10.1038/s41598-021-96536-9 |
| spellingShingle | Mogwasha D. Makhafola Kwena D. Modibane Kabelo E. Ramohlola Thabiso C. Maponya Mpitloane J. Hato Katlego Makgopa Emmanuel I. Iwuoha Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction Scientific Reports |
| title | Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction |
| title_full | Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction |
| title_fullStr | Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction |
| title_full_unstemmed | Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction |
| title_short | Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction |
| title_sort | palladinized graphene oxide mof induced coupling of volmer and heyrovsky mechanisms for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction |
| url | https://doi.org/10.1038/s41598-021-96536-9 |
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