The requisite to obtain reduced graphene oxide as an individual sheet and to maintain it in the reduced form introduces a new way of manipulative nanocomposite systems (e.g., semiconductor or metal nanoparticle and graphene composite). Herein, we developed a simple suitable UV-.assisted photocatalytic reduction method to prepare the most viable nanocomposite ZnO/RGO. Graphene oxide undergoes reduction reaction in ethanol- water system as it accepts electrons from UV irradiated semiconductor (ZnO), and subsequently characterized using different standard techniques. The presence of graphene in the composites were confirmed by X-ray diffraction (XRD), Raman, FTIR, SEM, TEM, and X-ray photoelectron spectroscopy (XPS) analysis. The highly efficient ZnO/RGO nanocomposite exhibited enhanced photocatalytic degradation performance for the degradation of methylene blue, with a maximum removal rate of (∼80%) as compared with pure ZnO nanoparticles (∼68%). This effective increase in degradation were caused by the prevention of electron–hole pair recombination in ZnO with the introduction of RGO. These findings suggest that the synthesized ZnO/RGO nanocomposite via photocatalytic approach not only offers UV-assisted reduction technique, but also open up a new way to obtain photoactive graphene-semiconductors, which could be effectively used in various application.
Oligomer-cross-linked gelatine-based hydrogels are valuable tools for drug and cell delivery due to their extracellular matrix-like properties that can be adjusted by the composition of the oligomer and the degree of cross-linking.
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