Abstract
We investigated photocatalytic and adsorption properties of silica (SiO2), bismuth (Bi) modified silica and bismuth silicate (Bi4(SiO4)3) nanofibers. Nanofiber average diameter was ~150nm and length was several micrometers. The bandgap of SiO2 decreased with increased Bi content and its value was 3.7eV for Bi4(SiO4)3. The Bi-modified photocatalyst (nanofibers) exhibited enhanced degradation efficiency as compared to pure nanofibers. The pseudo first order kinetic model explained the photocatalytic kinetics of the photocatalyst with rate constants of 0.081min−1 and 0.406min−1 for SiO2 and Bi4(SiO4)3 nanofibers, respectively.
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