P25-graphene composite as a high performance photocatalyst.

Herein we obtained a chemically bonded TiO(2) (P25)-graphene nanocomposite photocatalyst with graphene oxide and P25, using a facile one-step hydrothermal method. During the hydrothermal reaction, both of the reduction of graphene oxide and loading of P25 were achieved. The as-prepared P25-graphene photocatalyst possessed great adsorptivity of dyes, extended light absorption range, and efficient charge separation properties simultaneously, which was rarely reported in other TiO(2)-carbon photocatalysts. Hence, in the photodegradation of methylene blue, a significant enhancement in the reaction rate was observed with P25-graphene, compared to the bare P25 and P25-CNTs with the same carbon content. Overall, this work could provide new insights into the fabrication of a TiO(2)-carbon composite as high performance photocatalysts and facilitate their application in the environmental protection issues.

[1]  W. Sigmund,et al.  Photocatalytic Carbon‐Nanotube–TiO2 Composites , 2009 .

[2]  Ying Wang,et al.  Application of graphene-modified electrode for selective detection of dopamine , 2009 .

[3]  E. Bekyarova,et al.  Chemical modification of epitaxial graphene: spontaneous grafting of aryl groups. , 2009, Journal of the American Chemical Society.

[4]  G. Pan,et al.  Polymer Photovoltaic Cells Based on Solution‐Processable Graphene and P3HT , 2009 .

[5]  Krishnan Rajeshwar,et al.  Heterogeneous photocatalytic treatment of organic dyes in air and aqueous media , 2008 .

[6]  M. Rajamathi,et al.  CHEMICALLY MODIFIED GRAPHENE SHEETS PRODUCED BY THE SOLVOTHERMAL REDUCTION OF COLLOIDAL DISPERSIONS OF GRAPHITE OXIDE , 2008 .

[7]  Da Chen,et al.  Tuning Photoelectrochemical Performances of Ag−TiO2 Nanocomposites via Reduction/Oxidation of Ag , 2008 .

[8]  H. Fu,et al.  Efficient TiO2 Photocatalysts from Surface Hybridization of TiO2 Particles with Graphite‐like Carbon , 2008 .

[9]  Zhuang Liu,et al.  PEGylated nanographene oxide for delivery of water-insoluble cancer drugs. , 2008, Journal of the American Chemical Society.

[10]  P. Kamat,et al.  TiO2-graphene nanocomposites. UV-assisted photocatalytic reduction of graphene oxide. , 2008, ACS nano.

[11]  N. Peres,et al.  Fine Structure Constant Defines Visual Transparency of Graphene , 2008, Science.

[12]  S. Luo,et al.  Graphitized Carbon Nanotubes Formed in TiO2 Nanotube Arrays: A Novel Functional Material with Tube-in-Tube Nanostructure , 2008 .

[13]  Michael W. Cason,et al.  Combustion synthesis and characterization of nanocrystalline WO3. , 2008, Journal of the American Chemical Society.

[14]  Weiwei Cai,et al.  Graphene oxide papers modified by divalent ions-enhancing mechanical properties via chemical cross-linking. , 2008, ACS nano.

[15]  K. Müllen,et al.  Transparent, conductive graphene electrodes for dye-sensitized solar cells. , 2008, Nano letters.

[16]  R. Car,et al.  Single Sheet Functionalized Graphene by Oxidation and Thermal Expansion of Graphite , 2007 .

[17]  E. Williams,et al.  Atomic structure of graphene on SiO2. , 2007, Nano letters.

[18]  B. Dong,et al.  Preparation and electrochemical properties of Ag-modified TiO2 nanotube anode material for lithium–ion battery , 2007 .

[19]  Z. Zou,et al.  Low temperature preparation and visible light photocatalytic activity of mesoporous carbon-doped crystalline TiO2 , 2007 .

[20]  M. Toyoda,et al.  Carbon-coated anatase: the role of the carbon layer for photocatalytic performance , 2005 .

[21]  Andre K. Geim,et al.  Electric Field Effect in Atomically Thin Carbon Films , 2004, Science.

[22]  H. Kisch,et al.  Daylight photocatalysis by carbon-modified titanium dioxide. , 2003, Angewandte Chemie.

[23]  F. Wei,et al.  The large-scale production of carbon nanotubes in a nano-agglomerate fluidized-bed reactor , 2002 .

[24]  S. Martin,et al.  Environmental Applications of Semiconductor Photocatalysis , 1995 .

[25]  W. S. Hummers,et al.  Preparation of Graphitic Oxide , 1958 .