Synthesis and characterization of ZNO: CU and AG bimetallics nanoparticles by sol gel method

Abstract

Different weight ratios of Cu-silver-doped and non-doped ZnO nanoparticles were created, By using XRD, FTIR, UV-visible spectroscopy, FESEM, and EDS the presence of nanoparticles in the sol-gel (ZnO) and (ZnO: Ag and Cu) techniques was confirmed, the JCPDS standard card for Zn (01-080-0074) validated the hexagonal ZnO structure by X-ray diffraction for (ZnO) and (ZnO:Ag and Cu). we calculated the average crystal size of all the produced samples, and we observe that the crystal size grows as the ratio of copper and silver doping rises. According to the FTIR data, O-H expansion is responsible for the expected distinctive absorption band in the vicinity of (3090-3665 cm). Because KBr quickly absorbs CO, it is possible that the peaks in the range (1550-1630 cm) are caused by the KBr utilized. These peaks are related to the stretching vibrations of C=O that are symmetric and asymmetric. The stretching vibration of the ZnO bond can be seen in the form of a prominent peak in the (350–780 cm) range. When Ag and Cu are entered to the doped ZnO samples, the peak strength declines, indicating the start of Ag and Cu clusters on the surface of ZnO nanoparticles. The bond position was shifted as a result of alteration in bond length brought about by the substitution of Ag+ ions at the ZnO lattice sites. According to the UV-VIS measurements, pure ZnO has a peak at 370 nm that becomes red at 569 nm. With increasing concentrations of Ag and Cu, the nanocomposites show high absorption in the visible region because the peaks shift monotonously to longer wavelengths and cause the energy gap value to decrease by 3, 2.958, 2.76, 2.74, 2.69, and 2.5 eV, respectively. According to the FESEM data from IMAGE J, the nanoparticles have a spherical or nearly spherical form. Zn, Ag, and Cu elements may be seen in the EDS data.