Photocatalytic Oxidation Of Wastewater Contaminated With Phenolic Compounds Usinggraphene/Tio2 Nanocomposite
A Graphene oxide (GO) was prepared using modified Hummer`s method starting from graphite. GO was impregnated on commercial nanoparticles P25 TiO2(GoTi) After that, reduced GOTi was obtained by (a) hydrogen gas at different temperatures or (b) hydrazine hydrate in microwave using a cyclic technique or (c) Solvo thermal reduction. Characterization of all materials used were carried out using bulk and surface techniques e.g. XPS, XRD, Raman Spectroscopy, FTIR, SEM, UV-Vis diffuse reflectance, BET. The photocatalysis behavior of as-prepared nanocomposite were tested towards the phenolic compounds degradation and compared against commercial P25 TiO2 in presence and absence of H2O2. The study revealed that the TiO2 –supported RGO showing much higher performance than P25 TiO2 in presence of H2O2. Figure 1 shows the phenol degradation (20 ppm) in presences of different prepared catalysts.