Abstract
ABSTRACT Herein we obtain CdSe-TiO 2 composite, graphene-CdSe composite and graphene-TiO 2 composite by using a facile hydrothermal method. The as-prepared composites are characterized by Brunauer emmett Teller (BET) surface area measurement, X-ray diffraction (XRD), scanning electron microscopy (SEM) with an energy dispersive X-ray (EDX) analysis, transmission electron microscopy (TEM), UV-vis diffuse reflectance spectra (DRS). According to the decomposition results of methylene blue (MB) solution in dark, it can be observed that the graphene-CdSe composites show a very interesting character, self-decomposition effect of MB in dark. Keywords: Graphene, CdSe, Hydrothermal, UV-vis DRS, Self-decomposition INTRODUCTION In most of the industrial wastewater treatment works, adsorption by activated carbon, advanced chemical oxidation, enhanced coagulation and photochemical process are commonly employed technologies for removal of refractory pollutants from industrial wastes. Among of them, the advance of photochemical processes has made the decomposition of synthesized refractory organics sustainable, especially with the advent of semiconductor photocatalysts.
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