Bài báo khoa học

Synthesis, characterization, photocatalytic, and antibacterial properties of Ag-doped ZnO nanoparticles were presented in this work. The nanoparticles were synthesized by the combustion method using polyvinyl alcohol (PVA) as an agent. The structure of nanoparticles were characterized using powder X-ray diffraction (XRD) and transmission electron microscopy (TEM). XRD revealed a single-phase hexagonal structure in all samples, except for the 5% Ag-doped ZnO. TEM indicated that most particles had a spherical shape, with grain sizes ranging from 10 to 30 nm in diameter. Scanning electron microscopy (SEM) showed the porous surface of the sample. Both the shape and grain size of the nanoparticles were influenced by the Ag ratio and annealing temperatures. Rhodamine B was used as a representative dye pollutant to assess photocatalytic activity. The results demonstrated that Ag-doped ZnO nanoparticles exhibited superior photocatalytic properties compared to pure ZnO nanoparticles, with the 3% Ag-ZnO sample showing the best photocatalytic and antibacterial activity.