Shanghai Nanotechnlogy Promotion Center

Shanghai, China

Shanghai Nanotechnlogy Promotion Center

Shanghai, China

Time filter

Source Type

Yu K.,East China Normal University | Liu X.,China Jiliang University | Liu X.,Shanghai Nanotechnlogy Promotion Center | Li J.,East China Normal University | And 3 more authors.
Nanoscience and Nanotechnology Letters | Year: 2014

Bi2 WO6 -reduced graphene oxide (RGO) composites were successfully synthesized via microwaveassisted reduction of graphite oxide in Bi2 WO6 precursor solution using a microwave system. Their morphologies, structures, and photocatalytic performance in the degradation of Rhodamine B (RhB) were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV-vis absorption spectroscopy, and electrochemical impedance spectroscopy, respectively. The results show that the RGO addition can enhance the photocatalytic performance of Bi2 WO6 . Bi2 WO6 -RGO composite with 0.8 wt% RGO achieves a maximum RhB degradation rate at 240 min under visible light irradiation, much higher than that for Bi2 WO6 (72%). The enhanced photocatalytic performance is ascribed to the increased light absorption and the reduction in electron-hole pair recombination in Bi2 WO6 with the introduction of RGO. Copyright © 2014 American Scientific Publishers


Yu W.,East China Normal University | Liu X.,Shanghai Nanotechnlogy Promotion Center | Liu X.,China Jiliang University | Pan L.,East China Normal University | And 6 more authors.
Applied Surface Science | Year: 2014

F-doped TiO2(F-TiO2) were successfully synthesized using a modified sol-gel method. The morphologies,structures, and photocatalytic performance in the degradation of methylene blue (MB) were characterizedby scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV-vis absorptionspectroscopy, and electrochemical impedance spectra, respectively. The results show that F-TiO2exhibitsan enhanced photocatalytic performance in the degradation of MB with a maximum degradation rate of91% under visible light irradiation as compared with pure TiO2(32%). The excellent photocatalytic activityis due to the contribution from the increased visible light absorption, promoted separation of photo-generated electrons and holes as well as enhanced photocatalytic oxidizing species with the doping of Fin TiO2. © 2014 Elsevier B.V. All rights reserved.

Loading Shanghai Nanotechnlogy Promotion Center collaborators
Loading Shanghai Nanotechnlogy Promotion Center collaborators