title: Enhanced activity of bismuth-compounded TiO(2) nanoparticles for photocatalytically degrading rhodamine B solution.
abstract: TiO(2) nanoparticles compounded with different amounts of bismuth were prepared by a sol-gel method, and the effects of compounding bismuth on the phase transformation, photoinduced charge separation and photocatalytic activity for degrading rhodamine B solution were mainly investigated, along with enhancement mechanism of photocatalytic activity of TiO(2) nanoparticles by compounding bismuth species. It can be confirmed that, by means of X-ray diffraction (XRD), surface photovoltage spectroscopy (SPS) and ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS), compounding bismuth can extend the optical response, and effectively inhibit the phase transformation process from anatase to rutile, consequently greatly improving the anatase crystallinity so as to promote the photoinduced charge separation. These factors are responsible for the increase in the photocatalytic activity of TiO(2) compounded with an appropriate amount of bismuth species.
authors.affiliation: The Laboratory of Physical Chemistry, School of Chemistry and Material Sciences, Heilongjiang University, Harbin, PR China.
authors.forename: Jia
authors.initials: J
authors.lastname: Wang
authors.forename: Liqiang
authors.initials: L
authors.lastname: Jing
authors.forename: Lianpeng
authors.initials: L
authors.lastname: Xue
authors.forename: Yichun
authors.initials: Y
authors.lastname: Qu
authors.forename: Honggang
authors.initials: H
authors.lastname: Fu
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D002384:Catalysis; D005456:Fluorescent Dyes; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D010777:Photochemistry; D012235:Rhodamines / Q000737:chemistry*; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D005456:Fluorescent Dyes; D012235:Rhodamines; D012996:Solutions; C009495:titanium dioxide; D014025:Titanium; C029773:rhodamine B; D001729:Bismuth