Easily Prepared Graphene Anchored PVDF-hydrolized Cellulose Photocatalytic Composite

Description

Graphene-like metal oxide photocatalyst (G-Mox) was prepared in a low-cost single step carbonization process. Photocatalytic polymeric composites were prepared by phase separation technique. Hydrolyzed cellulose-PVDF (Phc) solution prepared from textile waste was mixed with PVDF. Physicochemical and structural properties of powder and composites were characterized by X ray diffractometer, SEM, FT-IR analysis. Photoluminescence and surface area analysis of photocatalyst were carried out with contact angle measurements. The photocatalytic properties of the synthesized composites were evaluated using the methyl orange (MO) as a model pollutant. The highest decolorization percentage was obtained as 91.8% with the Phc-20 composite. XRD diffraction patterns provide very descriptive information about the prepared composite. 2 theta=37, 48, 55 and 68º, which indicate TiO2 existence of the anatase phase in high compatibility with JCPDS files Anatase:21-1272 in the G-TiO2 and Ge-TiO2-Fe structure. The presence of cellulose in the diffraction pattern of Phc is evident from the sharp 22.7º with peaks in the range of 14-17º. In addition, the distinct peaks observed around 18 and 20º indicate the contribution of alpha phase PVDF. The crystal structure of the Phc composite showed great similarity to the our previous study. In the composites, starting from Phc-5, the 2theta=27º graphite peak emerged with TiO2 and graphene peaks. This value became most evident in Phc-30, which contains the highest solid.

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These data were obtained by analyzing the composites directly on the X-ray diffraction device. The crystallinity of powders and composites were investigated by x-ray diffractometer (XRD, Rigaku 2000) at 2θ:2º-70º with 2º/min scanning speed. The data was evaluated by converting it into a chart in Excel.

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