A Review of Electrochemical Reduction of Sodium Metaborate
The recycling of sodium borohydride poses a huge challenge to the drive towards a hydrogen economy. Currently, mechano-chemical, thermo-chemical and electrochemical are the only reported methods of recycling sodium metaborate into sodium borohydride. Much attention has been devoted to the mechano-ch...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/1/15 |
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| author | Wan Jefrey Basirun Syed Tawab Shah Md. Shalauddin Shamima Akhter Nazzatush Shimar Jamaludin Adeeb Hayyan |
| author_facet | Wan Jefrey Basirun Syed Tawab Shah Md. Shalauddin Shamima Akhter Nazzatush Shimar Jamaludin Adeeb Hayyan |
| author_sort | Wan Jefrey Basirun |
| collection | DOAJ |
| description | The recycling of sodium borohydride poses a huge challenge to the drive towards a hydrogen economy. Currently, mechano-chemical, thermo-chemical and electrochemical are the only reported methods of recycling sodium metaborate into sodium borohydride. Much attention has been devoted to the mechano-chemical and thermo-chemical methods of reduction, but little focus has been devoted to electrochemical methods. This review describes the electrochemical behaviour of borohydride (BH<sub>4</sub><sup>−</sup>) and metaborate (BO<sub>2</sub><sup>−</sup>) anions in alkaline solutions. The BH<sub>4</sub><sup>−</sup> is stabilized in highly concentrated alkaline solutions, while the electro-oxidation of BH<sub>4</sub><sup>−</sup> is dependent on the type of electrode material. The attempts to electro-reduce the BO<sub>2</sub><sup>−</sup> into BH<sub>4</sub><sup>−</sup> is reviewed and the challenges, suggestions and future outlook of electro-reduction for the recycling of BO<sub>2</sub><sup>−</sup> into BH<sub>4</sub><sup>−</sup> is highlighted. |
| first_indexed | 2024-03-11T10:04:24Z |
| format | Article |
| id | doaj.art-e3f2ce6924654476acc0b7c382cf701b |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T10:04:24Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e3f2ce6924654476acc0b7c382cf701b2023-11-16T15:13:25ZengMDPI AGEnergies1996-10732022-12-011611510.3390/en16010015A Review of Electrochemical Reduction of Sodium MetaborateWan Jefrey Basirun0Syed Tawab Shah1Md. Shalauddin2Shamima Akhter3Nazzatush Shimar Jamaludin4Adeeb Hayyan5Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, MalaysiaNanotechnology and Catalysis Research Center (NanoCat), University Malaya, Kuala Lumpur 50603, MalaysiaNanotechnology and Catalysis Research Center (NanoCat), University Malaya, Kuala Lumpur 50603, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, MalaysiaDepartment of Chemical Engineering, Faculty of Engineering, University Malaya, Kuala Lumpur 50603, MalaysiaThe recycling of sodium borohydride poses a huge challenge to the drive towards a hydrogen economy. Currently, mechano-chemical, thermo-chemical and electrochemical are the only reported methods of recycling sodium metaborate into sodium borohydride. Much attention has been devoted to the mechano-chemical and thermo-chemical methods of reduction, but little focus has been devoted to electrochemical methods. This review describes the electrochemical behaviour of borohydride (BH<sub>4</sub><sup>−</sup>) and metaborate (BO<sub>2</sub><sup>−</sup>) anions in alkaline solutions. The BH<sub>4</sub><sup>−</sup> is stabilized in highly concentrated alkaline solutions, while the electro-oxidation of BH<sub>4</sub><sup>−</sup> is dependent on the type of electrode material. The attempts to electro-reduce the BO<sub>2</sub><sup>−</sup> into BH<sub>4</sub><sup>−</sup> is reviewed and the challenges, suggestions and future outlook of electro-reduction for the recycling of BO<sub>2</sub><sup>−</sup> into BH<sub>4</sub><sup>−</sup> is highlighted.https://www.mdpi.com/1996-1073/16/1/15sodium metaboratesodium borohydrideelectro-reductionelectro-synthesis |
| spellingShingle | Wan Jefrey Basirun Syed Tawab Shah Md. Shalauddin Shamima Akhter Nazzatush Shimar Jamaludin Adeeb Hayyan A Review of Electrochemical Reduction of Sodium Metaborate Energies sodium metaborate sodium borohydride electro-reduction electro-synthesis |
| title | A Review of Electrochemical Reduction of Sodium Metaborate |
| title_full | A Review of Electrochemical Reduction of Sodium Metaborate |
| title_fullStr | A Review of Electrochemical Reduction of Sodium Metaborate |
| title_full_unstemmed | A Review of Electrochemical Reduction of Sodium Metaborate |
| title_short | A Review of Electrochemical Reduction of Sodium Metaborate |
| title_sort | review of electrochemical reduction of sodium metaborate |
| topic | sodium metaborate sodium borohydride electro-reduction electro-synthesis |
| url | https://www.mdpi.com/1996-1073/16/1/15 |
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