Abstract
ZnO/SnO and rGO-ZnO/SnO nanocomposites (NCs) were synthesized by chemical precipitation and one pot green synthesis methods. Graphene oxide prepared by Hummer’s method was converted to reduced graphene oxide (rGO) by using Alternanthera sessilis leaf extract. Fourier transform infrared spectroscopy, Raman spectra, and X-ray diffraction investigations all corroborated the NCs' known chemical composition. The composites' X-ray diffraction (XRD) spectra revealed diffraction peaks associated with hexagonal ZnO and tetragonal SnO. ZnO/SnO and rGO-ZnO/SnO NCs had optical band gaps of 3.6 and 3.45 eV. For both composites, Sn–O and Zn–O stretchings were recorded at 605 and 496 cm−1, respectively. The photo-degradation efficiencies of the ZnO/SnO and rGO-ZnO/SnO NCs against congo red dye under UV light were 80.3 % and 88.4 %, respectively. Excellent antibacterial activity was realized for rGO decorated ZnO/SnO NC.
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