The novel CuO-SnO2 nanocomposite oxide photocatalysts were prepared by simple co-precipitation method, and characterized by X- ray diffraction, transmission electron microscopy, N2 adsorption-desorption measurement an...The novel CuO-SnO2 nanocomposite oxide photocatalysts were prepared by simple co-precipitation method, and characterized by X- ray diffraction, transmission electron microscopy, N2 adsorption-desorption measurement and UV-Vis diffuse reflectance spectroscopy. The photocatalytic activities of CuO-SnO2, evaluated using the photodegradation of Acid Blue 62 as a probe reaction under the irradiation of Xenon light, were also found to be related to the calcination temperature and the molar ratio of Cu to Sn. The maximum photocatalytic activity of the CuO-SnO2 photocatalyst was observed to be calcined at 500~C for 3 h （the molar ratio of Cu to Sn was 1：1） due to the sample with good crystallization and high surface area. It also showed much higher photocatalytic activity in treatment dye wastewater under simulated sunlight irradiation compared to Degussa P25 TiO2.展开更多
In order to explore the photocatalytic activity of the lanthanum and iodine co-doped TiO2,the degradation of acid blue 62 as a probe reaction under simulated sunlight irradiattion was investigated.A novel visible-ligh...In order to explore the photocatalytic activity of the lanthanum and iodine co-doped TiO2,the degradation of acid blue 62 as a probe reaction under simulated sunlight irradiattion was investigated.A novel visible-light-activated La/I/TiO2 nanocomposition photocatalyst was prepared using precipitation-diping method,and characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM）and UV-Vis diffuse reflectance spectroscopy（UV-Vis-DRS）.The photocatalytic efficiency of La/I/TiO2 was evaluated by the photodegradation of reactive acid blue 62 as a probe reaction under simulated sunlight irradiationt.Photocatalytic experiment results shows that the La/I co-doped TiO2 catalyst has higher photocatalytic activity than the standard Degussa P25,La-doped TiO2 and I-doped TiO2 photocatalysts under simulated sunlight irradiation,and the way of La/I co-doping extends the absorption spectra of TiO2 and shifts the absorption edge remarkably toward longer wavelength.展开更多
基金Project supported by the National Natural Science Foundation of China(No. 20677008)the Innovation Foundation of Donghua University for Doctors(No. 113-06-001900621).
文摘The novel CuO-SnO2 nanocomposite oxide photocatalysts were prepared by simple co-precipitation method, and characterized by X- ray diffraction, transmission electron microscopy, N2 adsorption-desorption measurement and UV-Vis diffuse reflectance spectroscopy. The photocatalytic activities of CuO-SnO2, evaluated using the photodegradation of Acid Blue 62 as a probe reaction under the irradiation of Xenon light, were also found to be related to the calcination temperature and the molar ratio of Cu to Sn. The maximum photocatalytic activity of the CuO-SnO2 photocatalyst was observed to be calcined at 500~C for 3 h （the molar ratio of Cu to Sn was 1：1） due to the sample with good crystallization and high surface area. It also showed much higher photocatalytic activity in treatment dye wastewater under simulated sunlight irradiation compared to Degussa P25 TiO2.
基金Foundation items： The Key Scientific and Technological Project of Shanghai, China （No. 09231202805） Shanghai Leading Academic Discipline Project, China （No. B604）
文摘In order to explore the photocatalytic activity of the lanthanum and iodine co-doped TiO2,the degradation of acid blue 62 as a probe reaction under simulated sunlight irradiattion was investigated.A novel visible-light-activated La/I/TiO2 nanocomposition photocatalyst was prepared using precipitation-diping method,and characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM）and UV-Vis diffuse reflectance spectroscopy（UV-Vis-DRS）.The photocatalytic efficiency of La/I/TiO2 was evaluated by the photodegradation of reactive acid blue 62 as a probe reaction under simulated sunlight irradiationt.Photocatalytic experiment results shows that the La/I co-doped TiO2 catalyst has higher photocatalytic activity than the standard Degussa P25,La-doped TiO2 and I-doped TiO2 photocatalysts under simulated sunlight irradiation,and the way of La/I co-doping extends the absorption spectra of TiO2 and shifts the absorption edge remarkably toward longer wavelength.
