Fabrication of ZnO and TiO2 Combined Activated Carbon Nanocomposite and Adsorption Enhanced Synergetic Photocatalytic Effe

Enhanced photocatalytic degradation of methylene blue by reduced graphene-oxide/titanium dioxide/zinc oxide ternary nanocomposites

“…The photocatalytic activity is enhanced remarkably due to the vital role of rGO. Unexpectedly, for RGTZ nanocomposite, the ZnO PL spectra are only seen; at first site, the reason could not be predicted; later it was understood from a recent report of Chun Cheng et al, where he observed and reported the same phenomenon for TiO 2 -ZnO hybrid [17]; thus we conclude that this strong emission observed in the PL spectrum of RGTZ nanocomposite nanostructures may be attributed due to enhanced charge transfer/separation process. The PL spectra of RGTZ with visible broadband emission were induced by structuredependent defects in ZnO nanorods.…”

“…or by preparing nanocomposites utilizing activated carbon [13], CNT [14], graphene [15] based TiO 2 hybrid, in order to effectively degrade the dye effluents. Despite TiO 2 , ZnO is a promising photocatalyst [16] and it has been widely used for photocatalytic degradation of pollutant; furthermore researchers also prepared TiO 2 /ZnO binary nanocomposite in order to acquire the best from each metal oxide [17,18]. Apart from this duo, recently graphene and graphene-oxide is yet another excellent entrant in the photocatalysis field, which supports the duo in attaining effective degradation as it scavenges and shuttles electron; thus recombination issue can be minimized tremendously [15].…”