Rapid Microwave-Assisted Synthesis of CdS/Graphene/MoSx Tunable Heterojunctions and Their Application in Photocatalysis |
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| Authors: | Iordanis Tzanidis Feidias Bairamis Dr Lamprini Sygellou Dr Konstantinos S Andrikopoulos Prof Apostolos Avgeropoulos Prof Ioannis Konstantinou Prof Dimitrios Tasis |
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| Institution: | 1. Department of Chemistry, University of Ioannina, Ioannina, 45110 Greece;2. Institute of Chemical Engineering Sciences, Foundation of Research and Technology Hellas, Rio Patras, 26504 Greece;3. Department of Materials Science Engineering, University of Ioannina, Ioannina, 45110 Greece |
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| Abstract: | Nanoscale two-dimensional nanostructures have shown great potential as functional components in photocatalysis. Here, investigations on the synthesis of heterostructured hybrids, comprised of 0D CdS nanoparticles as semiconductor and 2D/2D graphene/MoSx as co-catalyst, are reported. The approach involves a rapid microwave-assisted reaction in autoclave conditions, by adopting either a one-step or a two-step protocol. The chemical speciation of the nanocomposites was found to depend strongly on the compounding conditions of the precursor substances. The photocatalytic activity was assessed by monitoring the photodegradation rate of 4-nitrophenol in solution using simulated solar light irradiation. The photocatalytic activity of the hybrids may be attributed to a combination of beneficial characteristics, strongly related to the chemical speciation of the composite components. Moreover, intimate contacts of the latter result in efficient heterojunctions. Overall, the present study provides valuable insight into the development of functional heterostructured photocatalysts comprised of two-dimensional nanomaterials. |
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| Keywords: | graphene hydrothermal synthesis microwave chemistry nanostructured materials photocatalysis |
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