Abstract
In consideration of the urgency to replace fossil fuel-based energy sources with renewable sources, one should do much to develop efficient photocatalyst that are capable of converting solar energy into hydrogen fuel. This work describes the atomic layer deposition (ALD) of ZnO on electrospinning TiO2 nanofibers to form a 1D TiO2@ZnO heterojunction. The obtained TiO2@ZnO composite were systematically investigated to reveal their structural and morphological properties by using SEM, BET, XRD, and TEM with EDX spectroscopy. The TiO2@ZnO hybrids showed enhanced photocatalytic activity towards hydrogen production as compared to the pure TiO2 nanofibers. The optimum hydrogen production rate was reaching to 1190.9 μmol/h/g without use of any co-catalytic noble metals, which is 6.5 folds higher than that of bare TiO2 counterpart, and also better or comparable to the ever reported TiO2@ZnO photocatalysts. Based on the mechanism analysis, the Type-II heterojunction charge transfer route was responsible for the boosted performance over the TiO2@ZnO composite.
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Acknowledgements
This work was supported by State Grid Zhejiang Electric Power Co., LTD Double Innovation Project (Grant No. B711JZ190006) and State Grid Co., Headquarters Science and Technology Project (Grant No. 5400-201919487A).
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Zhou, K., Li, P., Zhu, Y. et al. Atomic Layer Deposition of ZnO on TiO2 Nanofibers for Boosted Photocatalytic Hydrogen Production. Catal Lett 151, 78–85 (2021). https://doi.org/10.1007/s10562-020-03276-y
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DOI: https://doi.org/10.1007/s10562-020-03276-y