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초록· 키워드
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Assembling heterostructures by combining dissimilar oxide semiconductors is a promising approach to enhance charge separation and transfer in photoelectrochemical (PEC) water splitting. In this work, the CuO nanorods array/Cu₂O thin film bilayered heterostructure was successfully fabricated by a facile method that involved a direct electrodeposition of the Cu₂O thin film onto the vertically oriented CuO nanorods array to serve as the photoelectrode for the PEC water oxidation. The resulting copper-oxide-based heterostructure photoelectrode exhibited an enhanced PEC performance compared to common copper-oxide-based photoelectrodes, indicating good charge separation and transfer efficiency due to the band structure realignment at the interface. The photocurrent density and the optimal photocurrent conversion efficiency obtained on the CuO nanorods/Cu₂O thin film heterostructure were 0.59 mA/cm² and 1.10% at 1.06 V vs. RHE, respectively. These results provide a promising route to fabricating earth-abundant copper-oxide-based photoelectrode for visible-light-driven hydrogen generation using a facile, low-cost, and scalable approach of combining electrodeposition and hydrothermal synthesis.
목차
Abstract
1. Introduction
2. Experimental Details
3. Results and Discussion
4. Conclusion
References
참고문헌 (19)
참고문헌 신청
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P.V. Kamat, Meeting the clean energy demand: Nanostructure architecture for sloar energy conversion, J. Phys. Chem. C 111 (2007) 2834- 2860.
Y, Yang, D. Xu, Q. Wu, P. Diao, Cu2O/CuO bilayered composite as a high-efficiency photocathode for photoelectrochemical hydrogen evolution reaction, Sci. Rep. 6 (2016) 30158.
A. Kudo, Y. Miseki, Heterogeneous photocatalyst materials for water splitting, Chem. Soc. Rev. 38 (2009) 253-278.
F.E. Osterloch, Inorganic nanostructures for photoelectrochemical and photocatalytic water splitting, Chem, Soc. Rev. 42 (2013) 2294-2320.
P.V. Kamat, Meeting the clean energy demand: Nanostructure architecture for sloar energy conversion, J. Phys. Chem. C 111 (2007) 2834- 2860.
Y, Yang, D. Xu, Q. Wu, P. Diao, Cu2O/CuO bilayered composite as a high-efficiency photocathode for photoelectrochemical hydrogen evolution reaction, Sci. Rep. 6 (2016) 30158.
A. Kudo, Y. Miseki, Heterogeneous photocatalyst materials for water splitting, Chem. Soc. Rev. 38 (2009) 253-278.
F.E. Osterloch, Inorganic nanostructures for photoelectrochemical and photocatalytic water splitting, Chem, Soc. Rev. 42 (2013) 2294-2320.
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