A Green Synthesis of CoFe<sub>2</sub>O<sub>4</sub> Decorated ZIF-8 Composite for Electrochemical Oxygen Evolution
Low-cost, sustainable hydrogen production requires noble metal-free electrocatalysts for water splitting. In this study, we prepared zeolitic imidazolate frameworks (ZIF) decorated with CoFe<sub>2</sub>O<sub>4</sub> spinel nanoparticles as active catalysts for oxygen evolutio...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/24/11/9585 |
| _version_ | 1797597342646403072 |
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| author | Atanu Panda Hang-Kyu Cho Hansang Kim |
| author_facet | Atanu Panda Hang-Kyu Cho Hansang Kim |
| author_sort | Atanu Panda |
| collection | DOAJ |
| description | Low-cost, sustainable hydrogen production requires noble metal-free electrocatalysts for water splitting. In this study, we prepared zeolitic imidazolate frameworks (ZIF) decorated with CoFe<sub>2</sub>O<sub>4</sub> spinel nanoparticles as active catalysts for oxygen evolution reaction (OER). The CoFe<sub>2</sub>O<sub>4</sub> nanoparticles were synthesized by converting agricultural bio-waste (potato peel extract) into economically valuable electrode materials. The biogenic CoFe<sub>2</sub>O<sub>4</sub> composite showed an overpotential of 370 mV at a current density of 10 mA cm<sup>−2</sup> and a low Tafel slope of 283 mV dec<sup>−1</sup>, whereas the ZIF@CoFe<sub>2</sub>O<sub>4</sub> composite prepared using an in situ hydrothermal method showed an overpotential of 105 mV at 10 mA cm<sup>−2</sup> and a low Tafel slope of 43 mV dec<sup>−1</sup> in a 1 M KOH medium. The results demonstrated an exciting prospect of high-performance noble metal-free electrocatalysts for low-cost, high-efficiency, and sustainable hydrogen production. |
| first_indexed | 2024-03-11T03:04:53Z |
| format | Article |
| id | doaj.art-a3efc8ffbd6c4e35883684c9fcfe95cf |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-11T03:04:53Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-a3efc8ffbd6c4e35883684c9fcfe95cf2023-11-18T08:01:06ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672023-05-012411958510.3390/ijms24119585A Green Synthesis of CoFe<sub>2</sub>O<sub>4</sub> Decorated ZIF-8 Composite for Electrochemical Oxygen EvolutionAtanu Panda0Hang-Kyu Cho1Hansang Kim2Department of Mechanical Engineering, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of KoreaDepartment of Mechanical Engineering, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of KoreaDepartment of Mechanical Engineering, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of KoreaLow-cost, sustainable hydrogen production requires noble metal-free electrocatalysts for water splitting. In this study, we prepared zeolitic imidazolate frameworks (ZIF) decorated with CoFe<sub>2</sub>O<sub>4</sub> spinel nanoparticles as active catalysts for oxygen evolution reaction (OER). The CoFe<sub>2</sub>O<sub>4</sub> nanoparticles were synthesized by converting agricultural bio-waste (potato peel extract) into economically valuable electrode materials. The biogenic CoFe<sub>2</sub>O<sub>4</sub> composite showed an overpotential of 370 mV at a current density of 10 mA cm<sup>−2</sup> and a low Tafel slope of 283 mV dec<sup>−1</sup>, whereas the ZIF@CoFe<sub>2</sub>O<sub>4</sub> composite prepared using an in situ hydrothermal method showed an overpotential of 105 mV at 10 mA cm<sup>−2</sup> and a low Tafel slope of 43 mV dec<sup>−1</sup> in a 1 M KOH medium. The results demonstrated an exciting prospect of high-performance noble metal-free electrocatalysts for low-cost, high-efficiency, and sustainable hydrogen production.https://www.mdpi.com/1422-0067/24/11/9585spinel ferriteZIF-8magneticCoFe<sub>2</sub>O<sub>4</sub>oxygen evolution reaction |
| spellingShingle | Atanu Panda Hang-Kyu Cho Hansang Kim A Green Synthesis of CoFe<sub>2</sub>O<sub>4</sub> Decorated ZIF-8 Composite for Electrochemical Oxygen Evolution International Journal of Molecular Sciences spinel ferrite ZIF-8 magnetic CoFe<sub>2</sub>O<sub>4</sub> oxygen evolution reaction |
| title | A Green Synthesis of CoFe<sub>2</sub>O<sub>4</sub> Decorated ZIF-8 Composite for Electrochemical Oxygen Evolution |
| title_full | A Green Synthesis of CoFe<sub>2</sub>O<sub>4</sub> Decorated ZIF-8 Composite for Electrochemical Oxygen Evolution |
| title_fullStr | A Green Synthesis of CoFe<sub>2</sub>O<sub>4</sub> Decorated ZIF-8 Composite for Electrochemical Oxygen Evolution |
| title_full_unstemmed | A Green Synthesis of CoFe<sub>2</sub>O<sub>4</sub> Decorated ZIF-8 Composite for Electrochemical Oxygen Evolution |
| title_short | A Green Synthesis of CoFe<sub>2</sub>O<sub>4</sub> Decorated ZIF-8 Composite for Electrochemical Oxygen Evolution |
| title_sort | green synthesis of cofe sub 2 sub o sub 4 sub decorated zif 8 composite for electrochemical oxygen evolution |
| topic | spinel ferrite ZIF-8 magnetic CoFe<sub>2</sub>O<sub>4</sub> oxygen evolution reaction |
| url | https://www.mdpi.com/1422-0067/24/11/9585 |
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