Abstract

    Photocatalysis is considered to be a green and promising technology for transforming organic contaminants into nontoxic products. In this work, the CuO/tourmaline composite with zero-dimensional/two-dimensional (0D/2D) CuO architecture was obtained via a facile hydrothermal process. CuO chemically interacted with tourmaline via Si-O-Cu bond. The specific surface area of the CuO/tourmaline composite (23.60 m² g^-1) was larger than that of pristine CuO (3.41 m² g^-1). Three predominant reactive species of superoxide radical (O₂^•-), hydroxyl radical (•OH), and h⁺ were generated by the CuO/tourmaline composite aqueous suspension system under light irradiation. The CuO/tourmaline composite exhibited excellent photocatalytic capacity for the decomposition of organic pollutants, which was ascribed to the increase in the quantity of adsorption-photoreactive sites and the efficient utilization of photoinduced charge carriers benefited from tourmaline. This study offered a facile strategy for the construction of 0D/2D CuO structure and the design of tourmaline-based functional composite photocatalysts for the treatment of organic contaminants in waster.

Keywords: Photoinduced charge separation; Photocatalytic activity; 0D/2D CuO; Specific surface area; Tourmaline

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Yu, C.; Wen, M.; Tong, Z.; Li, S.; Yin, Y.; Liu, X.; Li, Y.; Liang, T.; Wu, Z.; Dionysiou, D. D. Beilstein Arch. 2020, 20202. doi:10.3762/bxiv.2020.2.v1

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