Novel synthesis of quaternary nanocomposites based on chemical vapor grown graphene for photocatalytic hydrogen evolution |
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Authors: | Shu Ye |
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Affiliation: | 1. Department of Advanced Materials Science &2. Engineering, Hanseo University, Chungnam, Korea |
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Abstract: | Pd-Pt/graphene-TiO2 nanocomposites were synthesized via a facile ultrasonic and hydrothermal method. For the functionalization of graphene, large area graphene obtained by chemical vapor deposition method was oxidized by 3-chloroperoxybenzoic acid. The functionalized graphene oxide was decorated with TiO2. And then, Pt and Pd nanoparticles were dispersed on graphene surface, simultaneously. The characterizations of “as-prepared” samples were studied by X-ray diffraction (XRD), transmission electron microscope (TEM), Raman, specific surface area (BET) and with energy dispersive X-ray (EDX). The photocatalytic activity of the Pd-Pt/graphene-TiO2 nanocomposite catalyst was evaluated by H2 evolution under UV light. Pd-Pt/graphene-TiO2 (Pd-Pt/G-TiO2) exhibited higher photocatalytic activities than control experimental group samples (TiO2, G-TiO2, Pd/G-TiO2 and Pt/G-TiO2) under UV light irradiation. |
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Keywords: | graphene Pd Pt XRD TEM Raman H2 evolution |
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