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P-doped TiO2 Nanofibers Decorated with Ag Nanoparticles for Enhanced Photocatalytic Activity under Simulated Solar Light
Authors
F. Aftab
S.N. Arshad
+4 more
Hatice Duran
S. Ghafoor
K. Kirchhoff
A. Rauf
Publication date
1 November 2020
Publisher
'Wiley'
Doi
Cite
Abstract
We report the synthesis of titania nanofibers (TNF) of ?195 nm mean diameter doped with phosphorus through one-pot electrospinning followed by decoration of Ag nanoparticles (NPs). The Ag NPs of ?8 nm size on 2 % P-doped TNFs (Ag-PTNFs) showed excellent photocatalytic activity for the reduction of Cr(VI), under simulated solar light, with ?100 % conversion to Cr(III) in 90 min at pH 3 with a pseudo-first order rate constant of 0.085 min?1 that is 96.5 % higher than TNFs. The Ag-PTNFs also exhibited excellent photodegradation of methylene blue with pseudo-first order rate constant of 0.052 min?1 which is 82.7 % better than TNFs. The enhanced photocatalytic performance of Ag-PTNFs is attributed to the reduced band-gap, increased charge separation and reduced recombination rates. A proposed photocatalytic mechanism based on the synergistic effect of both Ag and P doping is presented which highlights the potential of these composite materials for water remediation. © 2020 Wiley-VCH Gmb
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Last time updated on 09/12/2020