title: Facile synthesis of polyoxometalate-thionine composite via direct precipitation method and its photocatalytic activity for degradation of rhodamine B under visible light.
abstract: (TH)(3)PW(12) (TH=thionine, PW(12)=PW(12)O(40)(3-)) composite was prepared by direct precipitation of TH and PW(12). The (TH)(3)PW(12) was characterized via UV-vis spectrum, FT-IR, SEM, and BET surface area. PW(12) was intact during the precipitation process. The composite has a bar-like shape and relatively large surface area (Langmuir surface of (TH)(3)PW(12) was 31.59 m(2)g(-1), BET surface was 20.26 m(2)g(-1)). Using the material as the photocatalyst, rhodamine B (RhB) was efficiently bleached and mineralized under visible light irradiation (λ>420 nm). The kinetics of the photodecomposition follow the first-order reaction. The (TH)(3)PW(12) catalyst can be easily separated from the reaction system and has good stability for reuse.
authors.affiliation: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou 350002, China.
authors.forename: Yanglijun
authors.initials: Y
authors.lastname: You
authors.forename: Shuiying
authors.initials: S
authors.lastname: Gao
authors.forename: Zhen
authors.initials: Z
authors.lastname: Yang
authors.forename: Minna
authors.initials: M
authors.lastname: Cao
authors.forename: Rong
authors.initials: R
authors.lastname: Cao