Facile synthesis and unique photocatalytic property of niobium pentoxide hollow spheres and the high optoelectronic performance of their nanofilm.
In this paper, monodisperse poly(styrene-co-acrylmide) (PSAM)/Nb2O5 hybrid hollow spheres were synthesized using a hollowing mechanism similar to the Kirkendall effect. When these hybrid hollow spheres were calcinated at different temperatures, totally different structures, pseudohexagonal TT phase hollow Nb2O5 spheres, and orthorhombic T phase short rods were obtained. Both of them exhibited stronger photocatalytic activity than the commercial Nb2O5, especially the as-obtained Nb2O5 hollow spheres displayed significantly enhanced photocatalytic property and auto-accelerated photocatalytic kinetics compared to the commercial TiO2 (P25). Moreover, the Nb2O5 hollow sphere-based nanofilm fabricated using oil-water interfacial self-assembly presented excellent UV photodetective performance.
Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, the Advanced Coatings Research Center of MEC, Fudan University, Shanghai 200433, PR China.
Wei
W
Li
Rui
R
Gao
Min
M
Chen
Shuxue
S
Zhou
Limin
L
Wu
D002384:Catalysis; D004581:Electronics; D007700:Kinetics; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures; D009556:Niobium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D055668:Photochemical Processes; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature
D010087:Oxides; D009556:Niobium; C073337:niobium pentoxide
Hollow sphere; Kinetics; Niobium pentoxide; Photodegradation; Photodetector