NDLI: Preparation of Yb, N, and F doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$ composite films for visible-light photocatalytic degradation of organic dyes

Content Provider	Springer Nature Link
Author	Lu, Chunxiao Chen, Yang Tang, Liang Wei, Shengnan Song, Yahui Wang, Jun
Copyright Year	2017
Abstract	Several up-conversion luminescent materials (Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$, Yb doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$, Yb and N co-doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$, Yb and F co-doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$, and Yb, N, and F co-doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$) were synthesized using sol–gel method. The corresponding TiO$_{2}$ composite films (Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$, Yb doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$, Yb and N co-doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$, Yb and F co-doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$, and Yb, N, and F co-doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$) were prepared by sol–gel dip-coating method and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDX). The UV–Vis absorption and PL spectra of Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$ were also determined. The visible-light photocatalytic activity of the synthesized materials was evaluated in the degradation of Azo Fuchsine (AF) dye in aqueous solution. The concentration of the dye was monitored by UV–Vis spectroscopy. Some key factors, such as layer number, heat-treatment temperature and time on the photocatalytic activity of Yb, N, and F co-doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$ composite films were studied. The doping of Yb, N, and F into Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$ significantly enhanced the visible-light photocatalytic activity of Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$ composite film in the degradation of organic dyes. The experiments also indicated that the Yb, N, and F co-doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$ composite film has a good visible-light photocatalytic activity to degrade other organic dyes under visible-light irradiation.
Starting Page	1345
Ending Page	1357
Page Count	13
File Format	PDF
ISSN	00360244
Journal	Russian Journal of Physical Chemistry
Volume Number	91
Issue Number	7
e-ISSN	1531863X
Language	English
Publisher	Pleiades Publishing
Publisher Date	2017-06-15
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	up-conversion luminescence Yb, N, and F doped Er$^{3+}$:Y$_{3}$Al$_{5}$O$_{12}$/TiO$_{2}$ composite films visiblelight photocatalytic activity organic dyes degradation Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

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