title: Photocatalytic oxidation of gas-phase elemental mercury by nanotitanosilicate fibers.
abstract: Photocatalytic fibers were generated from the continuous evaporation of titanium tetraisopropoxide with tetraethyl orthosilicate through a flame burner. The morphology, the crystal form, and the components of the nanotitanosilicate fibers were analyzed by Raman spectroscopy, Field emission-scanning electron microscope, X-ray diffraction, and Brunauer-Emmett-Teller surface area analysis. The nanotitanosilicates prepared by three different carrier gases (air, N(2), and Ar) were tested for their photocatalytic ability to remove/oxidize gas-phase elemental mercury. Under UV black light, the Hg(0) capture efficiencies were 78%, 86%, and 85% for air, N(2), and Ar, respectively. For air, the value was close to 90%, even under household fluorescent light. The Hg(0) capture efficiency by nanotitanosilcate was measured under fluorescent light, UV black light, and sunlight.
authors.affiliation: Department of Chemical Engineering, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea.
authors.forename: Seok Ho
authors.initials: SH
authors.lastname: Jeon
authors.forename: Yujin
authors.initials: Y
authors.lastname: Eom
authors.forename: Tai Gyu
authors.initials: TG
authors.lastname: Lee
mesh_terms: D002384:Catalysis; D008628:Mercury / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D010083:Oxidants, Photochemical / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D010083:Oxidants, Photochemical; D017640:Silicates; D014025:Titanium; D008628:Mercury