Enhanced photoelectrochemical properties of NiO nanoparticles-decorated TiO2 nanotube arrays for water splitting

Vertically oriented titanium dioxide nanotube arrays (TNTAs) decorated with NiO nanoparticles (NPs) were successfully fabricated using two-step electrochemical anodization. An ultrasound-assisted deposition method was used to homogeneously loading the NiO NPs into the TNTAs, resulting in a NiO/TNTAs...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2020-07, Vol.31 (13), p.10707-10714
Main Authors: Jasim, Marwah Mohammed, Dakhil, Osama Abdul Azeez, Hussein, Emad H., Abdullah, Hussein I.
Format: Article
Language:English
Subjects:
Anatase
Arrays
Characterization and Evaluation of Materials
Chemistry and Materials Science
Diameters
Electrodes
Materials Science
Nanoparticles
Nanotubes
Nickel oxides
Optical and Electronic Materials
Titanium dioxide
Ultrasonic testing
Wall thickness
Water splitting
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Vertically oriented titanium dioxide nanotube arrays (TNTAs) decorated with NiO nanoparticles (NPs) were successfully fabricated using two-step electrochemical anodization. An ultrasound-assisted deposition method was used to homogeneously loading the NiO NPs into the TNTAs, resulting in a NiO/TNTAs junction electrode. X-ray diffraction reveals that the TNTAs and NiO/TNTAs showed anatase structures. Also, SEM images confirm that the nanotubes have a nominal length of 3.57 µm and approximately equal wall thickness and diameters; 55.51 nm and 17.64 nm, respectively. The NiO/TNTAs junction electrode exhibited high visible light photo-response that enhances the photoelectrochemical activity. Accordingly, the incident photon-to-current conversion efficiency of NiO/TNTAs was estimated to be 86.89% in comparison to the pure TNTAs whose efficiency was equal to 29.62%. In conclusion, the NiO/TNTAs junction fabricated by a simple, cost-effective, and applicable cell is a promising clean renewable source for the water-splitting applications.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-03620-3