Journal
CHEMOSPHERE
Volume 275, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.130052
Keywords
Tetracycline hydrochloride; Photocatalysis; Reduced graphene hydrogel; Quantum dots self-decoration; BiVO4
Categories
Funding
- National Natural Science Foundation of China [21908080]
- National Research Foundation of Korea (NRF) - Korea government (MIST) [2020R1C1C1011667, 2019R1A2C1002844, 2016R1A6A1A03012877]
- Natural Science Foundation of Jiangsu Province [BK20180884]
- National Research Foundation of Korea [2020R1C1C1011667] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study reports a novel composite photocatalyst BiVO4/rGH, which exhibited excellent photocatalytic efficiency for the degradation of tetracycline hydrochloride. The enhanced photocatalytic activity of BiVO4/rGH is attributed to the synergistic effects of the structure and the crucial role of active species.
In this study, we report the construction of a novel composite photocatalyst (BiVO4/rGH) composed of quantum dots (QDs) self-decorated BiVO4-nanoparticels (NPs) and reduced graphene hydrogel (rGH). The composite structures were prepared using an in-situ growth method. The BiVO4/rGH composite photocatalysts exhibited excellent photocatalytic efficiency for the degradation of tetracycline hydrochloride (TC center dot HCl). The promoted photocatalytic activity of the BiVO4/rGH is attributed to the synergetic effects of the unique structure involving QDs self-decorated BiVO4 NPs and a 3D network structure of rGH, which resulted in higher number of photogenerated charge carriers, surplus active sites, and enhanced charge separation. In addition, trapping measurements showed that center dot O-2(-) and h(+), as the main active species, play a crucial role in the degradation of TC center dot HCl over the composite photocatalyst. This study facilitates the design and construction of high efficiency hybrid photocatalysts with multifunctional materials for the removal of water pollutants. (C) 2021 Elsevier Ltd. All rights reserved.
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