Effect of TiO2 morphology on structure of TiO2-graphene oxide nanocomposite synthesized via a one-step hydrothermal method

JOURNAL OF ALLOYS AND COMPOUNDS

卷:722

Article

Najafi, Maryam¹  Kermanpur, Ahmad¹  Rahimipour, Mohammad Reza²  Najafizadeh, Abbas¹ 

[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran

[2] Mat & Energy Res Ctr, Dept Ceram, Karaj 31787316, Iran

关键词: TiO2;    Graphene oxide;    Nanocomposite;    Hydrothermal method;    Nanowires;    Nanoparticles;   

DOI  :  10.1016/j.jallcom.2017.06.001

来源: Elsevier

【 摘 要 】

Titanium dioxide-graphene oxide (TiO2-GO) nanocomposites with different TiO2 morphologies were successfully fabricated by a facile, one-step hydrothermal method. The GO synthesized by the modified Hummer's method was employed as the base in composition with TiO2 using in-situ hydrothermal method. The nanowire (NW) and nanoparticle (NP) morphologies of TiO2 were grown up on the surface of the GO sheets, which was confirmed by FE-SEM and HR-TEM characterization techniques. XRD and Raman spectroscopy were revealed formation of the TiO2-GO nanocomposites with tetragonal structure and of the covalent bonds between the TiO2 nanostructures and GO sheets. The best photodegradation rate of methylene blue was found for the TiO2 NW-GO nanocomposite. The present results indicated that the graphene-based semiconductor nanocomposites can be successfully synthesized by the low cost, one-step hydrothermal approach. (C) 2017 Elsevier B.V. All rights reserved.

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