A novel construction of Z-scheme CuO/g-C3N4 heterojunction for visible-light-driven photocatalysis in natural seawater

George Tzvetkov; Joana Zaharieva; Martin Tsvetkov; Tony Spassov

doi:10.1117/12.2552240

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30 December 2019 A novel construction of Z-scheme CuO/g-C₃N₄ heterojunction for visible-light-driven photocatalysis in natural seawater

George Tzvetkov, Joana Zaharieva, Martin Tsvetkov, Tony Spassov

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Proceedings Volume 11332, International Conference on Quantum, Nonlinear, and Nanophotonics 2019 (ICQNN 2019); 113320B (2019) https://doi.org/10.1117/12.2552240
Event: International Conference on Quantum, Nonlinear, and Nanophotonics 2019 (ICQNN 2019), 2019, Sofia, Bulgaria

Abstract

In the present study a simple and convenient solution route to grow submicron-sized CuO structures onto the surface of g-C₃N₄ was demonstrated and the upgraded visible-light-driven photocatalytic activity of the as-prepared composite was revealed. The buildup of CuO_{(4.4 wt%.)}/g-C₃N₄ p-n heterojunction was successfully accomplished via two-step ammonia- evaporation-induced synthetic approach. The resulting inorganic/organic composite was characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, thermogravimetry, ultraviolet-visible diffuse reflectance spectroscopy and photoluminescence spectroscopy to examine its phase structure, valence state, microstructural, thermal and optical properties. Its photocatalytic efficiency was tested using Malachite Green photodegradation in natural seawater and the results indicated that CuO/g-C₃N₄ is much more active than the individual components in the photodegradation of MG. A plausible photocatalytic mechanism was also proposed.

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George Tzvetkov, Joana Zaharieva, Martin Tsvetkov, and Tony Spassov "A novel construction of Z-scheme CuO/g-C₃N₄ heterojunction for visible-light-driven photocatalysis in natural seawater", Proc. SPIE 11332, International Conference on Quantum, Nonlinear, and Nanophotonics 2019 (ICQNN 2019), 113320B (30 December 2019); https://doi.org/10.1117/12.2552240

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