Nanosize TiO 2,Y 2 O 3/TiO 2 particles were prepared by the sol-gel process. The structur e was characterized by means of XRD,TEM. The photoelectric properties of the nan oparticles were studied by PL. The thickness a...Nanosize TiO 2,Y 2 O 3/TiO 2 particles were prepared by the sol-gel process. The structur e was characterized by means of XRD,TEM. The photoelectric properties of the nan oparticles were studied by PL. The thickness and the surface of the carboxymethy l cellulose film was measured by SEM. Based on a model reaction, the photocataly tic degradation of methylene blue with positive charge was investigated in TiO 2, Y2O3/TiO 2 nanopowder composite films irradiated by UV lamp. The results revealed that the degradation process belonged to the first-order k inetic reaction.展开更多
基金Support Foundation of Fujian Education Bureau( K04026) Support Foundation of Fujian Development &Reformation Committee(04FJSD)
文摘Nanosize TiO 2,Y 2 O 3/TiO 2 particles were prepared by the sol-gel process. The structur e was characterized by means of XRD,TEM. The photoelectric properties of the nan oparticles were studied by PL. The thickness and the surface of the carboxymethy l cellulose film was measured by SEM. Based on a model reaction, the photocataly tic degradation of methylene blue with positive charge was investigated in TiO 2, Y2O3/TiO 2 nanopowder composite films irradiated by UV lamp. The results revealed that the degradation process belonged to the first-order k inetic reaction.