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- W2388702944 abstract "The visible light photocatalytic activity of sodium bismuthate was evaluated by bleaching malachite green( MG) solution. A 97% removal rate of the MG( 20 mg·L- 1) was achieved in 17 min with sodium bismuthate,substantialy higher than those with TiO2( 28%) and Bi2WO6( 44%). Sodium bismuthate was reused 6-times for dye degradation without significant deactivation,and insignificant change of XRD pattern was observed between the original and the resured sample. During the course of MG degradation,the intensity of the solution UV / VIS maximum absorption band diminished concomitantly with a blue shifts in a its wavelength; Eight low small molecular weight degradation intermediates were identified by GC / MS; Four groups of MG demethylated intermediates were determined by LC / MS / MS,suggesting the main MG visible light photocatalytic degradation mechanism was chromophore cleavage and demethylation. The effect of sodium bismuthate dosage and MG initial concentration on the dye degradation was investigated. The results indicated that the reaction rate increased with increasing the catalyst dosage and decreasing MG initial concentration when sodium bismuthate was less than 3 g·L- 1." @default.
- W2388702944 created "2016-06-24" @default.
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- W2388702944 date "2013-01-01" @default.
- W2388702944 modified "2023-09-23" @default.
- W2388702944 title "Visible light-driven photocatalytic degradation of malachite green over sodium bismuthate" @default.
- W2388702944 hasPublicationYear "2013" @default.
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