Photo-Induced Phase Transition of CdZnS Based Nanocomposite at Room Temperature Under Solar Irradiation
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Photo-induced phase transition (PIPT) of CdZnS based nanocomposites that was performed at the room temperature under the solar light illumination is reported here for the first time. CdZnS particles were decorated on reduced graphene oxide (RGO) with a solvothermal process and consequently RGO-CdZnS-5%Pt nanocomposites (PC) have been synthesized as zinc blende (cubic) phase of CdZnS. Zinc blende structure (cubic) of CdZnS components of PC was turned to wurtzite (hexagonal) crystal structure with PIPT during the photocatalytic hydrogen evolution reaction. The band gap of the photocatalyst decreased from 2.42 to 2.19 eV and the hydrogen evolution rate increased from 37.3 to 184.0 µ mol h−1 due to the PIPT process.
KeywordsPhoto-induced phase transition Metal chalcogenides Hydrogen production Photocatalyst
This work was supported by Marmara University BAPKO (Project No. FEN-C-DRP-131217-0675) and The Scientific and Technological Research Council of Turkey, TUBITAK (Project No. 116M567).
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