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Rapid Microwave‐Assisted Synthesis of CdS/Graphene/MoS x Tunable Heterojunctions and Their Application in Photocatalysis
Author(s) -
Tzanidis Iordanis,
Bairamis Feidias,
Sygellou Lamprini,
Andrikopoulos Konstantinos S.,
Avgeropoulos Apostolos,
Konstantinou Ioannis,
Tasis Dimitrios
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202000131
Subject(s) - photocatalysis , materials science , photodegradation , heterojunction , graphene , nanomaterials , nanotechnology , nanocomposite , nanostructure , semiconductor , nanoparticle , catalysis , nanoscopic scale , chemical engineering , optoelectronics , chemistry , organic chemistry , engineering
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/MoS x 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.