Synergistic effects of ThO2 on g-C3N4/BiVO4 heterojunctions for enhanced photoelectrochemical (PEC) water splitting
In this study, we unveil a groundbreaking approach, incorporating dopants and engineering heterojunctions, to craft an exceptional g-C3N4/ThO2@BiVO4 photoanode through a two-step process of methanolic dispersion spin-coating followed by electrodeposition (ED) method. The PEC cells utilizing the g-C3...
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Elsevier Ltd
2025
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| author | Mohamed N.A. Ismail A.F. Kiong T.S. Mat Teridi M.A. |
| author2 | 57201821340 |
| author_facet | 57201821340 Mohamed N.A. Ismail A.F. Kiong T.S. Mat Teridi M.A. |
| author_sort | Mohamed N.A. |
| building | UNITEN Library |
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| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | In this study, we unveil a groundbreaking approach, incorporating dopants and engineering heterojunctions, to craft an exceptional g-C3N4/ThO2@BiVO4 photoanode through a two-step process of methanolic dispersion spin-coating followed by electrodeposition (ED) method. The PEC cells utilizing the g-C3N4/ThO2@BiVO4 heterojunction photoanode outperform both the g-C3N4/BiVO4 and standalone BiVO4, with the g-C3N4/ThO2@BiVO4 achieving a notably enhanced photocurrent density of 0.45 mA cm?2 at 1.23 V vs. RHE. This signifies a substantial improvement over the photocurrent densities of 0.32 mA cm?2 and 0.21 mA cm?2 attained by the g-C3N4/BiVO4 and BiVO4 photoanodes, respectively. Exhibiting a distinctive dual-nanostructure morphology, the deposited g-C3N4/ThO2@BiVO4 photoelectrode constructs a 'spongy' and 'needle-like' nanoflower architecture, ultimately converging into a densely packed agglomerate. The incorporation of Oxygen and about 5.8% Th4+- doping not only induces noteworthy photostability but also amplifies charge transfer efficiency while concurrently mitigating charge recombination within the g-C3N4/ThO2@BiVO4 photoanode, achieved through the creation of defects, as elucidated in XPS and Raman analyses. Our in-depth exploration highlights the exceptional performance and photostability of the g-C3N4/ThO2@BiVO4 photoanode, establishing it as an auspicious candidate for applications in photoelectrochemical (PEC) water splitting. ? 2024 Hydrogen Energy Publications LLC |
| format | Article |
| id | my.uniten.dspace-36753 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2025 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | my.uniten.dspace-367532025-03-03T15:44:25Z Synergistic effects of ThO2 on g-C3N4/BiVO4 heterojunctions for enhanced photoelectrochemical (PEC) water splitting Mohamed N.A. Ismail A.F. Kiong T.S. Mat Teridi M.A. 57201821340 29067828200 57216824752 12801271200 In this study, we unveil a groundbreaking approach, incorporating dopants and engineering heterojunctions, to craft an exceptional g-C3N4/ThO2@BiVO4 photoanode through a two-step process of methanolic dispersion spin-coating followed by electrodeposition (ED) method. The PEC cells utilizing the g-C3N4/ThO2@BiVO4 heterojunction photoanode outperform both the g-C3N4/BiVO4 and standalone BiVO4, with the g-C3N4/ThO2@BiVO4 achieving a notably enhanced photocurrent density of 0.45 mA cm?2 at 1.23 V vs. RHE. This signifies a substantial improvement over the photocurrent densities of 0.32 mA cm?2 and 0.21 mA cm?2 attained by the g-C3N4/BiVO4 and BiVO4 photoanodes, respectively. Exhibiting a distinctive dual-nanostructure morphology, the deposited g-C3N4/ThO2@BiVO4 photoelectrode constructs a 'spongy' and 'needle-like' nanoflower architecture, ultimately converging into a densely packed agglomerate. The incorporation of Oxygen and about 5.8% Th4+- doping not only induces noteworthy photostability but also amplifies charge transfer efficiency while concurrently mitigating charge recombination within the g-C3N4/ThO2@BiVO4 photoanode, achieved through the creation of defects, as elucidated in XPS and Raman analyses. Our in-depth exploration highlights the exceptional performance and photostability of the g-C3N4/ThO2@BiVO4 photoanode, establishing it as an auspicious candidate for applications in photoelectrochemical (PEC) water splitting. ? 2024 Hydrogen Energy Publications LLC Final 2025-03-03T07:44:25Z 2025-03-03T07:44:25Z 2024 Article 10.1016/j.ijhydene.2024.02.110 2-s2.0-85187304681 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187304681&doi=10.1016%2fj.ijhydene.2024.02.110&partnerID=40&md5=bec057bb1e0281c40dc5a8f4d02a07df https://irepository.uniten.edu.my/handle/123456789/36753 59 1063 1079 Elsevier Ltd Scopus |
| spellingShingle | Mohamed N.A. Ismail A.F. Kiong T.S. Mat Teridi M.A. Synergistic effects of ThO2 on g-C3N4/BiVO4 heterojunctions for enhanced photoelectrochemical (PEC) water splitting |
| title | Synergistic effects of ThO2 on g-C3N4/BiVO4 heterojunctions for enhanced photoelectrochemical (PEC) water splitting |
| title_full | Synergistic effects of ThO2 on g-C3N4/BiVO4 heterojunctions for enhanced photoelectrochemical (PEC) water splitting |
| title_fullStr | Synergistic effects of ThO2 on g-C3N4/BiVO4 heterojunctions for enhanced photoelectrochemical (PEC) water splitting |
| title_full_unstemmed | Synergistic effects of ThO2 on g-C3N4/BiVO4 heterojunctions for enhanced photoelectrochemical (PEC) water splitting |
| title_short | Synergistic effects of ThO2 on g-C3N4/BiVO4 heterojunctions for enhanced photoelectrochemical (PEC) water splitting |
| title_sort | synergistic effects of tho2 on g-c3n4/bivo4 heterojunctions for enhanced photoelectrochemical (pec) water splitting |
| url_provider | http://dspace.uniten.edu.my/ |