Phytochemical-Assisted Green Synthesis of Nickel Oxide Nanoparticles for Application as Electrocatalysts in Oxygen Evolution Reaction
Electrocatalytic water splitting is a promising solution to resolve the global energy crisis. Tuning the morphology and particle size is a crucial aspect in designing a highly efficient nanomaterials-based electrocatalyst for water splitting. Herein, green synthesis of nickel oxide nanoparticles usi...
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MDPI AG
2021-12-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/11/12/1523 |
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| author | Vidhya Selvanathan M. Shahinuzzaman Shankary Selvanathan Dilip Kumar Sarkar Norah Algethami Hend I. Alkhammash Farah Hannan Anuar Zalita Zainuddin Mohammod Aminuzzaman Huda Abdullah Md. Akhtaruzzaman |
| author_facet | Vidhya Selvanathan M. Shahinuzzaman Shankary Selvanathan Dilip Kumar Sarkar Norah Algethami Hend I. Alkhammash Farah Hannan Anuar Zalita Zainuddin Mohammod Aminuzzaman Huda Abdullah Md. Akhtaruzzaman |
| author_sort | Vidhya Selvanathan |
| collection | DOAJ |
| description | Electrocatalytic water splitting is a promising solution to resolve the global energy crisis. Tuning the morphology and particle size is a crucial aspect in designing a highly efficient nanomaterials-based electrocatalyst for water splitting. Herein, green synthesis of nickel oxide nanoparticles using phytochemicals from three different sources was employed to synthesize nickel oxide nanoparticles (NiO<sub>x</sub> NPs). Nickel (II) acetate tetrahydrate was reacted in presence of <i>aloe vera</i> leaves extract, papaya peel extract and dragon fruit peel extract, respectively, and the physicochemical properties of the biosynthesized NPs were compared to sodium hydroxide (NaOH)-mediated NiO<sub>x</sub>. Based on the average particle size calculation from Scherrer’s equation, using X-ray diffractograms and field-emission scanning electron microscope analysis revealed that all three biosynthesized NiO<sub>x</sub> NPs have smaller particle size than that synthesized using the base. Aloe-vera-mediated NiO<sub>x</sub> NPs exhibited the best electrocatalytic performance with an overpotential of 413 mV at 10 mA cm<sup>−2</sup> and a Tafel slope of 95 mV dec<sup>−1</sup>. Electrochemical surface area (ECSA) measurement and electrochemical impedance spectroscopic analysis verified that the high surface area, efficient charge-transfer kinetics and higher conductivity of aloe-vera-mediated NiO<sub>x</sub> NPs contribute to its low overpotential values. |
| first_indexed | 2024-03-10T04:26:46Z |
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| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T04:26:46Z |
| publishDate | 2021-12-01 |
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| series | Catalysts |
| spelling | doaj.art-65534dfb065b4c3cadbb2843f978d20a2023-11-23T07:34:51ZengMDPI AGCatalysts2073-43442021-12-011112152310.3390/catal11121523Phytochemical-Assisted Green Synthesis of Nickel Oxide Nanoparticles for Application as Electrocatalysts in Oxygen Evolution ReactionVidhya Selvanathan0M. Shahinuzzaman1Shankary Selvanathan2Dilip Kumar Sarkar3Norah Algethami4Hend I. Alkhammash5Farah Hannan Anuar6Zalita Zainuddin7Mohammod Aminuzzaman8Huda Abdullah9Md. Akhtaruzzaman10Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, MalaysiaSchool of Computer Science and Information Technology, Central University of Science and Technology, Dhaka 1216, BangladeshDepartment of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, MalaysiaSolar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, MalaysiaDepartment of Physics, Faculty of Science, Taif University, Taif 21944, Saudi ArabiaDepartment of Electrical Engineering, College of Engineering, Taif University, Taif 21944, Saudi ArabiaDepartment of Chemistry, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, MalaysiaDepartment of Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, MalaysiaDepartment of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman (UTAR), Perak Campus, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, MalaysiaDepartment of Electrical, Electronic & Systems Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, MalaysiaSolar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, MalaysiaElectrocatalytic water splitting is a promising solution to resolve the global energy crisis. Tuning the morphology and particle size is a crucial aspect in designing a highly efficient nanomaterials-based electrocatalyst for water splitting. Herein, green synthesis of nickel oxide nanoparticles using phytochemicals from three different sources was employed to synthesize nickel oxide nanoparticles (NiO<sub>x</sub> NPs). Nickel (II) acetate tetrahydrate was reacted in presence of <i>aloe vera</i> leaves extract, papaya peel extract and dragon fruit peel extract, respectively, and the physicochemical properties of the biosynthesized NPs were compared to sodium hydroxide (NaOH)-mediated NiO<sub>x</sub>. Based on the average particle size calculation from Scherrer’s equation, using X-ray diffractograms and field-emission scanning electron microscope analysis revealed that all three biosynthesized NiO<sub>x</sub> NPs have smaller particle size than that synthesized using the base. Aloe-vera-mediated NiO<sub>x</sub> NPs exhibited the best electrocatalytic performance with an overpotential of 413 mV at 10 mA cm<sup>−2</sup> and a Tafel slope of 95 mV dec<sup>−1</sup>. Electrochemical surface area (ECSA) measurement and electrochemical impedance spectroscopic analysis verified that the high surface area, efficient charge-transfer kinetics and higher conductivity of aloe-vera-mediated NiO<sub>x</sub> NPs contribute to its low overpotential values.https://www.mdpi.com/2073-4344/11/12/1523green synthesisnickel oxidenanoparticlesoxygen evolution reactionelectrocatalysts |
| spellingShingle | Vidhya Selvanathan M. Shahinuzzaman Shankary Selvanathan Dilip Kumar Sarkar Norah Algethami Hend I. Alkhammash Farah Hannan Anuar Zalita Zainuddin Mohammod Aminuzzaman Huda Abdullah Md. Akhtaruzzaman Phytochemical-Assisted Green Synthesis of Nickel Oxide Nanoparticles for Application as Electrocatalysts in Oxygen Evolution Reaction Catalysts green synthesis nickel oxide nanoparticles oxygen evolution reaction electrocatalysts |
| title | Phytochemical-Assisted Green Synthesis of Nickel Oxide Nanoparticles for Application as Electrocatalysts in Oxygen Evolution Reaction |
| title_full | Phytochemical-Assisted Green Synthesis of Nickel Oxide Nanoparticles for Application as Electrocatalysts in Oxygen Evolution Reaction |
| title_fullStr | Phytochemical-Assisted Green Synthesis of Nickel Oxide Nanoparticles for Application as Electrocatalysts in Oxygen Evolution Reaction |
| title_full_unstemmed | Phytochemical-Assisted Green Synthesis of Nickel Oxide Nanoparticles for Application as Electrocatalysts in Oxygen Evolution Reaction |
| title_short | Phytochemical-Assisted Green Synthesis of Nickel Oxide Nanoparticles for Application as Electrocatalysts in Oxygen Evolution Reaction |
| title_sort | phytochemical assisted green synthesis of nickel oxide nanoparticles for application as electrocatalysts in oxygen evolution reaction |
| topic | green synthesis nickel oxide nanoparticles oxygen evolution reaction electrocatalysts |
| url | https://www.mdpi.com/2073-4344/11/12/1523 |
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