Preparation and photo-catalytic performance of β2-SiW11/PANI/TiO2 photo-catalyst. Issue 24 (11th November 2020)

• Record Type: Journal Article
• Authors: Yang, Mingrui; Ma, Ronghua; Chen, Lin; Zhang, Chengli; Cao, Rui; Wen, Qi
• Is Part Of: Journal of coordination chemistry. Volume 73:Issue 24(2020)
• Page Start: 3420
• Page End: 3430
• Publication Date: 2020-11-11
• Subjects: Heteropoly tungstate -- TiO2 -- photo-catalytic performance -- methylene blue; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2020.1849641
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: Using heteropoly tungstate β2 -K8 SiW11 O39 xH2 O as the active component, the tungstate was loaded on PANI/TiO2 by the dipping method to prepare a composite photo-catalyst β2 -SiW11 /PANI/TiO2 . The new ternary composite material, β2 -SiW11 /PANI/TiO2, was characterized by IR, UV, TG, XPS, XRD and SEM. Meanwhile, the degradation of methylene blue solution was used as a probe reaction to evaluate the photo-catalytic performance of β2 -SiW11 /PANI/TiO2 . The effect of solution pH and amount of composite material on photo-catalytic activity was investigated. Compared with TiO2 and silicate, the composite material β2 -SiW11 /PANI/TiO2 as photo-catalyst exhibited enhanced photo-catalytic performance due to the synergic effect between TiO2 and heteropoly tungstate. Under optimum conditions, 92.58% of the dye was decomposed in 150 min. Our present findings will have a profound effect on the use of β2 -SiW11 /PANI/TiO2 composite as photo-catalytic material. Graphical Abstract: