title: Sonochemical synthesis and photocatalytic activity of meso- and macro-porous TiO(2) for oxidation of toluene.
abstract: Meso-and macro-porous TiO(2) were synthesized by ultrasonic induced solvothermal method. Octadecylamine as a soft template was used to direct the formation of porous structure. The as-prepared porous TiO(2) was characterized by low angle and wide angle X-ray diffraction, N(2) adsorption-desorption isotherms and BET surface area. The energy influence of ultrasound and heat and concentration of nitric acid for post extraction on formation of porous structure were investigated. The photocatalytic activities of TiO(2) were investigated by degrading toluene gas under UV light. The results revealed that proper energy facilitates the formation of porous structure and too low concentration of nitric acid cannot extract template from pores. The photocatalytic activities of TiO(2) with porous structure are higher than those of nonporous ones.
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS) (The State Key Laboratory of Rare Earth Materials Chemistry and Applications), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Yuntao
authors.initials: Y
authors.lastname: Wang
authors.forename: Lei
authors.initials: L
authors.lastname: Xie
authors.forename: Jie
authors.initials: J
authors.lastname: Zheng
authors.forename: Xingguo
authors.initials: X
authors.lastname: Li
mesh_terms: D002384:Catalysis; D017942:Nitric Acid; D010084:Oxidation-Reduction; D010777:Photochemistry / Q000379:methods*; D016062:Porosity; D014025:Titanium / Q000737:chemistry*; D014050:Toluene / Q000737:chemistry / Q000378:metabolism*; D014465:Ultrasonics; D014961:X-Ray Diffraction
chemical_list: C009495:titanium dioxide; D014050:Toluene; D017942:Nitric Acid; D014025:Titanium