Characterization of GO and TiO2-GO composites prepared by using microwave technique

Graphene oxide (GO) and titanium dioxide-graphene oxide (TiO 2-GO) composites were prepared by microwave technique at power of 500 W and for 10 min. The crystalline structure, chemical structure and morphological of graphite, GO and TiO2-GO were investigated in this study. The morphology of GO and T...

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Main Authors: Patomnetikul C., Thongtem S., Narksitipan S.
格式: Conference or Workshop Item
語言:English
出版: SPIE 2014
在線閱讀:http://www.scopus.com/inward/record.url?eid=2-s2.0-84902828433&partnerID=40&md5=61da6fe58784a0f7ffab6c53ad11a5c5
http://cmuir.cmu.ac.th/handle/6653943832/4870
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機構: Chiang Mai University
語言: English
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總結:Graphene oxide (GO) and titanium dioxide-graphene oxide (TiO 2-GO) composites were prepared by microwave technique at power of 500 W and for 10 min. The crystalline structure, chemical structure and morphological of graphite, GO and TiO2-GO were investigated in this study. The morphology of GO and TiO2-GO composites were characterized by scanning electron microscopy (SEM). It showed that the TiO2-GO composites seem to consist of TiO2 particles aggregated on the top of graphene oxide layer. The strong peak in the XRD pattern of natural graphite appears at 2θ = 26.6°, corresponding with the interlayer spacing of 0.329 nm while the GO pattern shows a characteristic peak at 2θ = 11.8° is assigned to (002) inter-planar spacing of 0.736 nm, indicating the presence of oxygen-containing functional groups formed during oxidation. These groups cause the GO sheets to stack more loosely, and the interlayer spacing increases from 0.329 nm to 0.736 nm. Additionally, XRD pattern for the TiO 2-GO composites at 2θ = 25.3° can be ascribed to the anatase phase of TiO2 (JCPDF 21-1272), which is significantly different from the natural graphite and graphene oxide. © 2014 SPIE.