In:
IOP Conference Series: Materials Science and Engineering, IOP Publishing, Vol. 701, No. 1 ( 2019-12-01), p. 012011-
Abstract:
GO/TiO 2 thin films have been synthesized from titanium (IV) isopropoxide (TTIP) by a sol-gel method. The films were deposited onto a glass substrate using spin coating deposition technique then were subjected to annealed process at 350 °C. The different amount of graphene oxide (GO) was added into the parent solution of sol in order to investigate the microstructure, topography, optical band gap and photocatalytic activity of the thin films. The prepared thin films were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), UV-VIS spectrophotometry and degradation of methylene blue (MB). AFM images reveal a rougher surface of GO/TiO 2 thin film than bare TiO 2 thin film due to GO particles. Moreover, the SEM images showed the formation of semispherical microstructure of bare TiO 2 changes to some larger combined molecules with GO addition. The UV–Vis spectrophotometer results show that with optical direct energy gap decreases from 3.30 to 3.18 eV after GO addition due to the effect of high surface roughness and bigger grain size. Furthermore, the optical results also indicated that GO improved the optical properties of TiO 2 in the visible range region.
Type of Medium:
Online Resource
ISSN:
1757-8981
,
1757-899X
DOI:
10.1088/1757-899X/701/1/012011
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2019
detail.hit.zdb_id:
2506501-4
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