Ultrathin Assembles of Porous Array for Enhanced H2 Evolution
Since the complexity of photocatalyst synthesis process and high cost of noble cocatalyst leftovers a major hurdle to producing hydrogen (H2) from water, a noble metal-free Ni-Si/MgO photocatalyst was realized for the frst time to generate H2 efectively under illumination with visible light. The cat...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Nature Research
2020
|
| Subjects: | |
| Online Access: | https://eprints.ums.edu.my/id/eprint/26805/1/Ultrathin%20Assembles%20of%20Porous.pdf https://eprints.ums.edu.my/id/eprint/26805/2/Ultrathin%20Assembles%20of%20Porous%20fulltext.pdf |
| _version_ | 1825714057378791424 |
|---|---|
| author | Aminul Islam Teo, Siow Hwa Md. Rabiul Awual Yap, Taufiq Yun Hin |
| author_facet | Aminul Islam Teo, Siow Hwa Md. Rabiul Awual Yap, Taufiq Yun Hin |
| author_sort | Aminul Islam |
| collection | UMS |
| description | Since the complexity of photocatalyst synthesis process and high cost of noble cocatalyst leftovers a major hurdle to producing hydrogen (H2) from water, a noble metal-free Ni-Si/MgO photocatalyst was realized for the frst time to generate H2 efectively under illumination with visible light. The catalyst was produced by means of simple one-pot solid reaction using self-designed metal reactor. The physiochemical properties of photocatalyst were identifed by XRD, FESEM, HRTEM, EDX, UVvisible, XPS, GC and PL. The photocatalytic activities of Ni-Si/MgO photocatalyst at diferent nickel concentrations were evaluated without adjusting pH, applied voltage, sacrifcial agent or electron donor. The ultrathin-nanosheet with hierarchically porous structure of catalyst was found to exhibit higher photocatalytic H2 production than hexagonal nanorods structured catalyst, which suggests that the randomly branched nanosheets are more active surface to increase the light-harvesting efciency due to its short electron difusion path. The catalyst exhibited remarkable performance reaching up to 714 µmolh−1 which is higher among the predominant semiconductor catalyst. The results demonstrated that the photocatalytic reaction irradiated under visible light illumination through the production of hydrogen and hydroxyl radicals on metals. The outcome indicates an important step forward one-pot facile approach to prepare noble ultrathin photocatalyst for hydrogen production from water |
| first_indexed | 2024-03-06T03:06:08Z |
| format | Article |
| id | ums.eprints-26805 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:06:08Z |
| publishDate | 2020 |
| publisher | Nature Research |
| record_format | dspace |
| spelling | ums.eprints-268052022-01-10T07:50:13Z https://eprints.ums.edu.my/id/eprint/26805/ Ultrathin Assembles of Porous Array for Enhanced H2 Evolution Aminul Islam Teo, Siow Hwa Md. Rabiul Awual Yap, Taufiq Yun Hin QC Physics QD Chemistry Since the complexity of photocatalyst synthesis process and high cost of noble cocatalyst leftovers a major hurdle to producing hydrogen (H2) from water, a noble metal-free Ni-Si/MgO photocatalyst was realized for the frst time to generate H2 efectively under illumination with visible light. The catalyst was produced by means of simple one-pot solid reaction using self-designed metal reactor. The physiochemical properties of photocatalyst were identifed by XRD, FESEM, HRTEM, EDX, UVvisible, XPS, GC and PL. The photocatalytic activities of Ni-Si/MgO photocatalyst at diferent nickel concentrations were evaluated without adjusting pH, applied voltage, sacrifcial agent or electron donor. The ultrathin-nanosheet with hierarchically porous structure of catalyst was found to exhibit higher photocatalytic H2 production than hexagonal nanorods structured catalyst, which suggests that the randomly branched nanosheets are more active surface to increase the light-harvesting efciency due to its short electron difusion path. The catalyst exhibited remarkable performance reaching up to 714 µmolh−1 which is higher among the predominant semiconductor catalyst. The results demonstrated that the photocatalytic reaction irradiated under visible light illumination through the production of hydrogen and hydroxyl radicals on metals. The outcome indicates an important step forward one-pot facile approach to prepare noble ultrathin photocatalyst for hydrogen production from water Nature Research 2020 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/26805/1/Ultrathin%20Assembles%20of%20Porous.pdf text en https://eprints.ums.edu.my/id/eprint/26805/2/Ultrathin%20Assembles%20of%20Porous%20fulltext.pdf Aminul Islam and Teo, Siow Hwa and Md. Rabiul Awual and Yap, Taufiq Yun Hin (2020) Ultrathin Assembles of Porous Array for Enhanced H2 Evolution. Scientific Reports, 10 (2324). ISSN 2045-2322 https://doi.org/10.1038/s41598-020-59325-4 |
| spellingShingle | QC Physics QD Chemistry Aminul Islam Teo, Siow Hwa Md. Rabiul Awual Yap, Taufiq Yun Hin Ultrathin Assembles of Porous Array for Enhanced H2 Evolution |
| title | Ultrathin Assembles of Porous Array for Enhanced H2 Evolution |
| title_full | Ultrathin Assembles of Porous Array for Enhanced H2 Evolution |
| title_fullStr | Ultrathin Assembles of Porous Array for Enhanced H2 Evolution |
| title_full_unstemmed | Ultrathin Assembles of Porous Array for Enhanced H2 Evolution |
| title_short | Ultrathin Assembles of Porous Array for Enhanced H2 Evolution |
| title_sort | ultrathin assembles of porous array for enhanced h2 evolution |
| topic | QC Physics QD Chemistry |
| url | https://eprints.ums.edu.my/id/eprint/26805/1/Ultrathin%20Assembles%20of%20Porous.pdf https://eprints.ums.edu.my/id/eprint/26805/2/Ultrathin%20Assembles%20of%20Porous%20fulltext.pdf |
| work_keys_str_mv | AT aminulislam ultrathinassemblesofporousarrayforenhancedh2evolution AT teosiowhwa ultrathinassemblesofporousarrayforenhancedh2evolution AT mdrabiulawual ultrathinassemblesofporousarrayforenhancedh2evolution AT yaptaufiqyunhin ultrathinassemblesofporousarrayforenhancedh2evolution |