Abstract
In this paper, the flexible polyacrylonitrile (PAN) nanofibers are used as carriers to prepare one-dimensional bismuth oxyiodide-silver iodide (BiOI-AgI) photocatalyst. PAN-BiOI-AgI is prepared on the surface of electrospun PAN nanofibers by alternate growth method and subsequent ion exchange method at room temperature. The results of XRD, TEM, XPS, and UV-Vis diffuse reflectance spectroscopy indicate the heterojunctions formation. The flexible PAN-BiOI-AgI heterojunction fibers show higher photocatalytic degradation efficiency for rhodamine B than PAN-BiOI or PAN-AgI. The enhanced photocatalytic performance is attributed to that the heterojunction improves the photo-generated electron-hole separation efficiency. After 60 min of visible light irradiation, the degradation efficiency is greater than 95%. Free radical capture experiments show that•O2- and h+ are the main groups involved in the oxidation reaction.
Original language | English |
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Pages (from-to) | 1031-1042 |
Number of pages | 12 |
Journal | Optical Materials Express |
Volume | 12 |
Issue number | 3 |
Early online date | 15 Feb 2022 |
DOIs | |
Publication status | Published - 1 Mar 2022 |