NDLI: Hydrothermal synthesis of 3D urchin-like Ag/TiO$_{2}$/reduced graphene oxide composites and its enhanced photocatalytic performance

Content Provider	Springer Nature Link
Author	Liu, Yuhuan Zhou, Yi Yang, Luyue Wang, Yutang Wu, Yiwei Li, Chaocheng Lu, Jun
Copyright Year	2016
Abstract	Innovative 3D urchin-like ternary TiO$_{2}$ composites, which combine Ag nanoparticles with graphene, have been successfully synthesized through a simple hydrothermal method. This process employed nontoxic and mild dihydrate sodium citrate as a reducing agent. During the hydrothermal process, graphene oxide and AgNO$_{3}$ were reduced to reduced graphene oxide (RGO) and Ag, respectively. Subsequently, they were grown on the surface of rutile TiO$_{2}$ with a 3D urchin-like microsphere (1.5 μm). The as-prepared 3D urchin-like composites were characterized by X-ray diffraction, SEM and TEM. These techniques were also employed to ensure the morphology of urchin-like and rutile phase of TiO$_{2}$. FT-IR, Raman spectroscopy and XPS characterization demonstrated the successful reduction in AgNO$_{3}$ and graphite oxide to metallic Ag and RGO. The UV–visible spectrum of the ternary composite displayed strong absorption in the visible light region, which was attributed to the efficient electron transport of well-dispersed Ag nanoparticles (20–40 nm) and the formation of Ti–O–C bond between graphene and titania. The synthesized urchin-like ternary composite exhibited enhanced photocatalytic activity (98.7 %) for Rhodamine B degradation. This work provides a very convenient chemical route to the scalable production of Ag/TiO$_{2}$/RGO ternary composite photocatalyst for potential applications in solving the environmental problems and energy issues. Also, the proposed mechanism underlying the photocatalytic degradation of Rhodamine B dyes was discussed.Fourier transform infrared (FTIR) spectra of pure UT, UTG and Ag–UTG composite. The scheme of proposed mechanism for the photocatalytic degradation of RhB on Ag–UTG.
Starting Page	1
Ending Page	13
Page Count	13
File Format	PDF
ISSN	13880764
Journal	Journal of Nanoparticle Research
Volume Number	18
Issue Number	9
e-ISSN	1572896X
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-09-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Urchin-like TiO$_{2}$ Reduced graphene oxide Ag Photocatalytic Nanostructure Environmental applications Nanotechnology Inorganic Chemistry Characterization and Evaluation of Materials Physical Chemistry Optics, Lasers, Photonics, Optical Devices
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Atomic and Molecular Physics, and Optics Condensed Matter Physics Bioengineering Modeling and Simulation

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