Facile synthesis of polyoxometalate-thionine composite via direct precipitation method and its photocatalytic activity for degradation of rhodamine B under visible light

Yanglijun You; Shuiying Gao; Zhen Yang; Minna Cao; Rong Cao

doi:10.1016/j.jcis.2011.09.017

Facile synthesis of polyoxometalate-thionine composite via direct precipitation method and its photocatalytic activity for degradation of rhodamine B under visible light

J Colloid Interface Sci. 2012 Jan 1;365(1):198-203. doi: 10.1016/j.jcis.2011.09.017. Epub 2011 Sep 17.

Authors

Yanglijun You¹, Shuiying Gao, Zhen Yang, Minna Cao, Rong Cao

Affiliation

¹ State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou 350002, China.

PMID: 21974924
DOI: 10.1016/j.jcis.2011.09.017

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.