title: Graphene-supported CoPc/TiO₂synthesized by sol-gel-hydrothermal method with enhanced photocatalytic activity for degradation of the typical gas of landfill exhaust.
abstract: This work was focused on the enhanced photocatalytic activity of cobalt phthalocyanine (CoPc)/TiO₂under visible light irradiation supported on reduced graphene oxide (RGO). A series of RGO/CoPc/TiO₂nanocomposites were synthesized via sol-gel-hydrothermal method. The photocatalysts were characterized by X-ray diffraction, BET surface area, Scanning electron microscopy, Raman spectra, Fourier transform infrared spectra, UV-Vis spectra and Photoluminescence spectra. The results demonstrated that the TiO₂existed as anatase phase both of CoPc/TiO₂and RGO/CoPc/TiO₂composites, and the absorption range in visible light of RGO/CoPc/TiO₂composites were broadened further. The photodegradation results of diethyl sulfide, the typical gas of landfill exhaust, under visible light revealed that RGO/CoPc/TiO₂nanocomposites exhibited much higher photocatalytic activity than CoPc/TiO₂and pure TiO₂, indicating the ideal amount of RGO was 7.5 wt.%, the optimal amount of 7.5% RGO/CoPc/TiO₂composite on each plat was 0.3g and the degradation efficiency of diethyl sulfide was about 90%.
authors.affiliation: a School of Chemistry and Biological Engineering , University of Science and Technology Beijing , Beijing , P.R. China.
authors.forename: Xiao-Fen
authors.initials: XF
authors.lastname: Fan
authors.forename: Jie-Min
authors.initials: JM
authors.lastname: Liu
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control*; D002384:Catalysis; D005740:Gases / Q000737:chemistry; D006108:Graphite; D007211:Indoles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010782:Photolysis; D013440:Sulfides / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry; D018505:Waste Management
chemical_list: D000393:Air Pollutants; D005740:Gases; D007211:Indoles; D009942:Organometallic Compounds; D013440:Sulfides; C009495:titanium dioxide; C063633:cobalt phthalocyanine; D006108:Graphite; C051751:diethyl sulfide; D014025:Titanium