| Autor: |
Mohamed, Nurul Aida, Ullah, Habib, Safaei, Javad, Ismail, Aznan Fazli, Mohamad Noh, Mohamad Firdaus, Soh, Mohd Fairuz, Ibrahim, Mohd Adib, Ludin, Norasikin Ahmad, Mat Teridi, Mohd Asri |
| Zdroj: |
The Journal of Physical Chemistry - Part C; March 2019, Vol. 123 Issue: 14 p9013-9026, 14p |
| Abstrakt: |
Comprehensive experimental and density functional theory simulations have been performed for the enhanced photoelectrochemical performance of γ irradiated g-C3N4and its heterojunction with BiVO4. The structure and morphology of g-C3N4@BiVO4as a heterojunction were analyzed and verified from the correlation of experimental and theoretical data. It is found that γ radiations have changed the bonding structure of g-C3N4, which ultimately reduces the optical band gap energy. Moreover, the performance of γ irradiated g-C3N4is two-fold, compared to that of the nonirradiated one, and increases from 3.59 to 5.86 μA cm–2at 1.23 V versus Ag/AgCl in 0.5 M Na2SO4electrolyte solution (pH 7). Finally, it is observed that the performance of γ irradiated g-C3N4in the g-C3N4@BiVO4heterojunction increased from 0.53 to 1.38 mA cm–2, compared to that of the nonirradiated one. In summary, it has been concluded that γ irradiated g-C3N4and its heterojunction can potentially be applied in PEC solar water splitting. |
| Databáze: |
Supplemental Index |
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