title: P25-graphene hydrogels: room-temperature synthesis and application for removal of methylene blue from aqueous solution.
abstract: Herein we report a room-temperature synthesis of chemically bonded TiO2 (P25)-graphene composite hydrogels and their use as high performance visible light photocatalysts. The three-dimensional (3D) TiO2-carbon composite exhibits a significant enhancement in the reaction rate in the decontamination of methylene blue, compared to the bare P25. The 3D P25-graphene hydrogel is much easier to prepare and apply as a macroscopic device, compared to the 2D P25-graphene sheets. This work could provide new insights into the room-temperature synthesis of graphene-based materials. As a kind of the novel 3D graphene-based composite, the obtained high performance P25-graphene gel could be widely used in the environmental protection issues.
authors.affiliation: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, PR China.
authors.forename: Chengyi
authors.initials: C
authors.lastname: Hou
authors.forename: Qinghong
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yaogang
authors.initials: Y
authors.lastname: Li
authors.forename: Hongzhi
authors.initials: H
authors.lastname: Wang
mesh_terms: D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry / Q000528:radiation effects; D052918:Environmental Restoration and Remediation / Q000379:methods*; D006108:Graphite / Q000737:chemistry*; D020100:Hydrogels / Q000138:chemical synthesis*; D008027:Light; D008751:Methylene Blue / Q000737:chemistry / Q000528:radiation effects; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon / Q000737:chemistry / Q000648:ultrastructure; D010782:Photolysis; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014025:Titanium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000528:radiation effects; D018508:Water Purification / Q000379:methods; D014961:X-Ray Diffraction
chemical_list: D004396:Coloring Agents; D020100:Hydrogels; D037742:Nanotubes, Carbon; D012996:Solutions; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D006108:Graphite; D014025:Titanium; D008751:Methylene Blue