Assessment of clean H2 energy production from water using novel silicon photocatalyst
Nanosheets of silicon have attracted a great deal of attention due to its tunable optical and electronic properties. However, the development of facile and easily scalable synthesis process has remained a great contest. Endeavor has been made in this research to find a waste inferred effective pho...
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| Format: | Article |
| Language: | English English |
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Elsevier LTD
2020
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| Online Access: | https://eprints.ums.edu.my/id/eprint/26841/1/Assessment%20of%20clean%20H2%20energy%20production%20from%20water%20using%20novel%20abstract.pdf https://eprints.ums.edu.my/id/eprint/26841/2/Assessment%20of%20clean%20H2%20energy%20production%20from%20water%20using%20novel.pdf |
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| author | Aminul Islam Teo, Siow Hwa Md. Rabiul Awual Yun Hin Taufiq-Yap |
| author_facet | Aminul Islam Teo, Siow Hwa Md. Rabiul Awual Yun Hin Taufiq-Yap |
| author_sort | Aminul Islam |
| collection | UMS |
| description | Nanosheets of silicon have attracted a great deal of attention due to its tunable optical and electronic
properties. However, the development of facile and easily scalable synthesis process has remained a
great contest. Endeavor has been made in this research to find a waste inferred effective photocatalyst to
deliver hydrogen (H2) through visible light responsive water splitting.
One-pot solid phase reaction was applied to synthesis catalyst and adopted ultrathin structure. The
photocatalytic efficiency of catalyst was examined by XRD, XPS, and UVeVIS absorption spectra, PL,
FESEM, HRTEM and EDX. The HRTEM and FESEM images revealed the interconnected nanosheets with Si
having the average thickness of 5 nm and their band gaps were 2.3e2.5 eV corresponding to the absorption
of visible light range. The H2 production rate on photocatalyst was originated to 3200 mmol h�1
without utilizing any conciliatory electron givers, voltage or pH alteration, which beats the Pt, Ru, Rh, Pd
and Au stacked photocatalyst ever detailed up until this point. The significant increase in photocatalytic
activity could be the fast charge migration and separation from the silicon-hydrogen and siliconhydroxyl
bonds on Si surface and facilitation of charge separation could results from the multiple reflections
of visible light on ultrathin nanosheets. It has been confirmed that the electron/hole recombination
rate in ultrathin nanosheets of Si declined due to the oxidation of Si surface. It would be
presumed that the approach of surface chemistry of silicon could not be limited towards the photocatalytic
water splitting and could be applicable to remedy water pollution. |
| first_indexed | 2024-03-06T03:06:14Z |
| format | Article |
| id | ums.eprints-26841 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:06:14Z |
| publishDate | 2020 |
| publisher | Elsevier LTD |
| record_format | dspace |
| spelling | ums.eprints-268412021-04-28T07:39:19Z https://eprints.ums.edu.my/id/eprint/26841/ Assessment of clean H2 energy production from water using novel silicon photocatalyst Aminul Islam Teo, Siow Hwa Md. Rabiul Awual Yun Hin Taufiq-Yap Q Science (General) QC Physics Nanosheets of silicon have attracted a great deal of attention due to its tunable optical and electronic properties. However, the development of facile and easily scalable synthesis process has remained a great contest. Endeavor has been made in this research to find a waste inferred effective photocatalyst to deliver hydrogen (H2) through visible light responsive water splitting. One-pot solid phase reaction was applied to synthesis catalyst and adopted ultrathin structure. The photocatalytic efficiency of catalyst was examined by XRD, XPS, and UVeVIS absorption spectra, PL, FESEM, HRTEM and EDX. The HRTEM and FESEM images revealed the interconnected nanosheets with Si having the average thickness of 5 nm and their band gaps were 2.3e2.5 eV corresponding to the absorption of visible light range. The H2 production rate on photocatalyst was originated to 3200 mmol h�1 without utilizing any conciliatory electron givers, voltage or pH alteration, which beats the Pt, Ru, Rh, Pd and Au stacked photocatalyst ever detailed up until this point. The significant increase in photocatalytic activity could be the fast charge migration and separation from the silicon-hydrogen and siliconhydroxyl bonds on Si surface and facilitation of charge separation could results from the multiple reflections of visible light on ultrathin nanosheets. It has been confirmed that the electron/hole recombination rate in ultrathin nanosheets of Si declined due to the oxidation of Si surface. It would be presumed that the approach of surface chemistry of silicon could not be limited towards the photocatalytic water splitting and could be applicable to remedy water pollution. Elsevier LTD 2020 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/26841/1/Assessment%20of%20clean%20H2%20energy%20production%20from%20water%20using%20novel%20abstract.pdf text en https://eprints.ums.edu.my/id/eprint/26841/2/Assessment%20of%20clean%20H2%20energy%20production%20from%20water%20using%20novel.pdf Aminul Islam and Teo, Siow Hwa and Md. Rabiul Awual and Yun Hin Taufiq-Yap (2020) Assessment of clean H2 energy production from water using novel silicon photocatalyst. Journal of Cleaner Production, 244. ISSN 0959-6526 (Submitted) https://doi.org/10.1016/j.jclepro.2019.118805 |
| spellingShingle | Q Science (General) QC Physics Aminul Islam Teo, Siow Hwa Md. Rabiul Awual Yun Hin Taufiq-Yap Assessment of clean H2 energy production from water using novel silicon photocatalyst |
| title | Assessment of clean H2 energy production from water using novel silicon photocatalyst |
| title_full | Assessment of clean H2 energy production from water using novel silicon photocatalyst |
| title_fullStr | Assessment of clean H2 energy production from water using novel silicon photocatalyst |
| title_full_unstemmed | Assessment of clean H2 energy production from water using novel silicon photocatalyst |
| title_short | Assessment of clean H2 energy production from water using novel silicon photocatalyst |
| title_sort | assessment of clean h2 energy production from water using novel silicon photocatalyst |
| topic | Q Science (General) QC Physics |
| url | https://eprints.ums.edu.my/id/eprint/26841/1/Assessment%20of%20clean%20H2%20energy%20production%20from%20water%20using%20novel%20abstract.pdf https://eprints.ums.edu.my/id/eprint/26841/2/Assessment%20of%20clean%20H2%20energy%20production%20from%20water%20using%20novel.pdf |
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