In:
Journal of Chemical Research, SAGE Publications, Vol. 45, No. 11-12 ( 2021-11), p. 1076-1082
Abstract:
To improve the photocatalytic activity of TiO 2 , a series of NiO–TiO 2 nanotubes (NTbs) is prepared by impregnating TiO 2 nanotubes in a solution of NiCl 2 ·6H 2 O at different concentrations. Self-organized TiO 2 nanotubes are prepared by a two-step anodization process. Scanning electron microscopy images show that large particle agglomerates are formed for higher precursor concentrations, and X-ray energy-dispersive spectroscopy results indicate that the atomic percentages of Ni in the NiO–TiO 2 NTbs prepared with precursor concentrations of 100 and 300 mM are 1.95% and 4.23%, respectively. Electronic lifetime measurements show that the recombination rate of photogenerated electron–hole pairs is lower for NiO–TiO 2 NTbs compared to that of TiO 2 . Specifically, the recombination rate of the sample prepared at 50 mM is the lowest, which is associated with the longest electron lifetime. Compared to unmodified TiO 2 nanotubes, NiO–TiO 2 NTbs exhibit improved results for the photocatalytic degradation of rhodamine B.
Type of Medium:
Online Resource
ISSN:
1747-5198
,
2047-6507
DOI:
10.1177/17475198211056285
Language:
English
Publisher:
SAGE Publications
Publication Date:
2021
detail.hit.zdb_id:
3010810-X
Permalink
