Photocatalytic degradation of textile dye X-3B using polyoxometalate-TiO2 hybrid materials.
Titanium dioxide functionalized with Keggin type polyoxometalate (POMs) [X(n+)W(12)O(40)]((8-n)-) (XW(12); X(n+)=P(5+), Si(4+), Ge(4+)) were prepared by sol-gel method. The Keggin structure and dispersion state of POMs were monitored by FT-IR and XRD. The composites showed higher photocatalytic activity than pure TiO(2), pure POMs or mechanical mixture of TiO(2) and POMs for X-3B degradation. Among the three POMs-TiO(2) hybrid materials, the reactivity was: PW(12)>SiW(12)>GeW(12). With different loading weights for the same POMs, the reactivity followed the order: 30wt.%>15wt.%>45wt.%.
Jin
Hongxiao
H
Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China.
Wu
Qingyin
Q
Pang
Wenqin
W
D001391:Azo Compounds / Q000737:chemistry*; D009282:Naphthalenesulfonates / Q000737:chemistry*; D010782:Photolysis; D014025:Titanium / Q000737:chemistry*; D017973:Tungsten Compounds / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods
D001391:Azo Compounds; D009282:Naphthalenesulfonates; C520101:Reactive brilliant red X-3B; D017973:Tungsten Compounds; C009495:titanium dioxide; D014025:Titanium