TY - JOUR
T1 - Reduced graphene oxide-TiO2 nanocomposite with high photocatalystic activity for the degradation of rhodamine B
AU - Wang, Feng
AU - Zhang, Kan
PY - 2011/7/5
Y1 - 2011/7/5
N2 - Reduced graphene oxide-TiO2 (RGO-TiO2) nanocomposites have been successfully synthesized through a facile hydrothermal reaction with minor modification using graphene oxide (GO) and commercial P25 as starting materials in an ethanol-water solvent, followed by calcining temperature at 400 °C for 2 h in Ar. These nanocomposites prepared with different ratios of graphene oxide (GO) were characterized by BET surface area, X-ray diffraction (XRD), Raman spectroscopy, UV-vis diffuse reflectance spectroscopy (UV-vis DRS), Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Transmission Electron Microscopy (TEM) and ultraviolet-visible (UV-vis) absorption spectroscopy. The RGO-TiO2 nanocomposites exhibited much higher photocatalytic activity than bare P25 for the degradation of rhodamine B (Rh.B) in an aqueous solution. The improved photocatalytic activities may be attributed to increased adsorbability for Rh.B molecular, light absorption levels in visible region and charge transfer rate in the presence of a two-dimensional graphene network.
AB - Reduced graphene oxide-TiO2 (RGO-TiO2) nanocomposites have been successfully synthesized through a facile hydrothermal reaction with minor modification using graphene oxide (GO) and commercial P25 as starting materials in an ethanol-water solvent, followed by calcining temperature at 400 °C for 2 h in Ar. These nanocomposites prepared with different ratios of graphene oxide (GO) were characterized by BET surface area, X-ray diffraction (XRD), Raman spectroscopy, UV-vis diffuse reflectance spectroscopy (UV-vis DRS), Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Transmission Electron Microscopy (TEM) and ultraviolet-visible (UV-vis) absorption spectroscopy. The RGO-TiO2 nanocomposites exhibited much higher photocatalytic activity than bare P25 for the degradation of rhodamine B (Rh.B) in an aqueous solution. The improved photocatalytic activities may be attributed to increased adsorbability for Rh.B molecular, light absorption levels in visible region and charge transfer rate in the presence of a two-dimensional graphene network.
KW - Charge transfer
KW - Graphene oxide
KW - Hydrothermal reaction
KW - Photocatalytic activity
KW - Reduced graphene oxide-TiO nanocomposite
KW - Rhodamine B
UR - http://www.scopus.com/inward/record.url?scp=79960742344&partnerID=8YFLogxK
U2 - 10.1016/j.molcata.2011.05.026
DO - 10.1016/j.molcata.2011.05.026
M3 - Article
AN - SCOPUS:79960742344
SN - 1381-1169
VL - 345
SP - 101
EP - 107
JO - Journal of Molecular Catalysis A: Chemical
JF - Journal of Molecular Catalysis A: Chemical
IS - 1-2
ER -