The doped ZnO nanorods as a photocatalyst with different Eu contents were prepared by microwave assisted method and they were characterized by means of X-ray diffraction （XRD）, energy-dispersive X-ray spectroscopy ...The doped ZnO nanorods as a photocatalyst with different Eu contents were prepared by microwave assisted method and they were characterized by means of X-ray diffraction （XRD）, energy-dispersive X-ray spectroscopy （EDS）, UV-Vis spectroscopy, surface area Brunauer-Emmett-Teller （BET）, X-ray photoelectron spectroscopy （XPS）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The average crystallite size and band gap energy of Eu-doped ZnO were varied with the Eu content. The XRD pattern of Eu-doped ZnO indicated hexagonal crystal structure with an average crystallite size of 25 nm. The pres-ence of europium with trivalent state and its doping successfully into the crystal lattice of ZnO matrix were confirmed by XPS tech-nique. The photocatalytic activity of Eu-doped ZnO nanorods was evaluated for methyl orange degradation. The photocatalytic experi-ments showed^91%degradation of methyl orange over 0.2 mol.%Eu doped ZnO sample within 3 h under UV light （365 nm）.展开更多
基金Project supported by University Grants Commission(UGC),New Delhi,India(37-335/2009(SR))Department of Science and Technology(DST)of India(SR/S1/PC/0041/2010)
文摘The doped ZnO nanorods as a photocatalyst with different Eu contents were prepared by microwave assisted method and they were characterized by means of X-ray diffraction （XRD）, energy-dispersive X-ray spectroscopy （EDS）, UV-Vis spectroscopy, surface area Brunauer-Emmett-Teller （BET）, X-ray photoelectron spectroscopy （XPS）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The average crystallite size and band gap energy of Eu-doped ZnO were varied with the Eu content. The XRD pattern of Eu-doped ZnO indicated hexagonal crystal structure with an average crystallite size of 25 nm. The pres-ence of europium with trivalent state and its doping successfully into the crystal lattice of ZnO matrix were confirmed by XPS tech-nique. The photocatalytic activity of Eu-doped ZnO nanorods was evaluated for methyl orange degradation. The photocatalytic experi-ments showed^91%degradation of methyl orange over 0.2 mol.%Eu doped ZnO sample within 3 h under UV light （365 nm）.
