Issue 5, 2015

One-dimensional Bi2O3 QD-decorated BiVO4 nanofibers: electrospinning synthesis, phase separation mechanism and enhanced photocatalytic performance

Abstract

In this work, we design and successfully fabricate novel Bi2O3 quantum dot (QD)-decorated BiVO4 nanofibers by a direct heat treatment of as-spun fibers. The Bi2O3 QDs with a size of 5–15 nm are well dispersed on the surface of the BiVO4 nanofibers with a diameter of 400–700 nm to form a Bi2O3 QD-decorated BiVO4 nanofiber photocatalyst. Based on the phase separation mechanism and the properties of solvents, a possible formation process of the Bi2O3 QD-decorated BiVO4 nanofibers has been proposed. The BiVO4 nanofibers decorated with Bi2O3 QDs exhibit much better photocatalytic performance than pure BiVO4 nanofibers. Photocurrent responses and electrochemical impedance spectra prove that decorating BiVO4 nanofibers with very small Bi2O3 QDs can effectively promote the separation of photoinduced carriers, which is beneficial for photocatalytic properties. More significantly, this work is relevant to environmental purification and photoelectrochemistry.

Graphical abstract: One-dimensional Bi2O3 QD-decorated BiVO4 nanofibers: electrospinning synthesis, phase separation mechanism and enhanced photocatalytic performance

Supplementary files

Article information

Article type
Paper
Submitted
24 Sep 2014
Accepted
25 Nov 2014
First published
25 Nov 2014

RSC Adv., 2015,5, 3767-3773

Author version available

One-dimensional Bi2O3 QD-decorated BiVO4 nanofibers: electrospinning synthesis, phase separation mechanism and enhanced photocatalytic performance

C. Lv, G. Chen, J. Sun, C. Yan, H. Dong and C. Li, RSC Adv., 2015, 5, 3767 DOI: 10.1039/C4RA11065J

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