20 Result(s)
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Ghafar Ali
Materials Science
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Article
Synthesis of Graphite Doped TiO2 Nanotubes, and Their Structural, Electronic, and Photocatalytic Characterization
Self-organized and vertically oriented TiO2 nanotubes (TNTs) were synthesized via anodization of Ti sheet in a glycerol-based used electrolyte. Graphite (Gt) is doped in TNTs by physical vapor deposition (PVD) un...
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Article
Electrodeposition-assisted formation of anodized TiO2–CuO heterojunctions for solar water splitting
The anatase phase titanium dioxide nanotubes (ATNTs) are investigated for photocatalytic water splitting with and without the formation of copper oxide (CuO) heterojunctions. ATNTs have been grown on titanium ...
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Open AccessRetraction Note to: A Comparative Study of the Toxicity of Polyethylene Glycol–Coated Cobalt Ferrite Nanospheres and Nanoparticles
An amendment to this paper has been published and can be accessed via the original article.
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Article
Open AccessRETRACTED ARTICLE: A Comparative Study of the Toxicity of Polyethylene Glycol–Coated Cobalt Ferrite Nanospheres and Nanoparticles
We present a comparative study of the toxicity of polyethylene glycol (PEG)–coated cobalt ferrite nanoparticles and nanospheres. Nanoparticles were prepared by hydrothermal method while nanospheres were prepar...
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Correction to: Morphological evolution of ZnO nanostructures with hydrothermal oxidation time and their electrochemical glucose sensing properties
In Figure 3 (a) the axis title as well as units are inadvertently mentioned as “Wavenumber (cm−1)”, which should be read as “Wavelength (nm)”. In the same Figure, the peak labels are mistakenly mentioned with uni...
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Article
Morphological evolution of ZnO nanostructures with hydrothermal oxidation time and their electrochemical glucose sensing properties
In this work, zinc oxide (ZnO) nanostructures have been grown from electrodeposited Zn thin film followed by hydrothermal oxidation. The Zn layer was grown on copper (Cu) substrate at room temperature and then...
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Article
Role of temperature and NiO addition in improving photocatalytic properties of TiO2 nanotubes
Self-organized TiO2 nanotubes (TiNTs) have been synthesized by electrochemical anodization in an electrolyte containing ethylene glycol, ammonium fluoride, and de-ionized water at 40 V for 3 h. TiNTs were then an...
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Open AccessFabrication of Uniform Nanoporous Oxide Layers on Long Cylindrical Zircaloy Tubes by Anodization Using Multi-Counter Electrodes
We have presented a method to prepare a uniform anodic nanoporous oxide film on the surface of a cylindrical zircaloy (Zr) tube. The distribution of the electric field around the Zr tube determines the distrib...
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Open AccessControlled Fabrication of Nanoporous Oxide Layers on Zircaloy by Anodization
We have presented a mechanism to explain why the resulting oxide morphology becomes a porous or a tubular nanostructure when a zircaloy is electrochemically anodized. A porous zirconium oxide nanostructure is ...
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Article
Open AccessSynthesis of flake-like graphene from nickel-coated polyacrylonitrile polymer
Graphene can be synthesized from polyacrylonitrile (PAN) polymer through pyrolysis. A metal catalyst such as nickel (Ni) is required for the conversion of the polymer to graphene. The metal catalysts can be pl...
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Open AccessFormation of self-organized Zircaloy-4 oxide nanotubes in organic viscous electrolyte via anodization
This work reports the formation of self-organized Zircaloy-4 (Zr-4) oxide nanotubes in viscous organic ethylene glycol (EG) electrolyte containing a small amount of fluoride salt and deionized (DI) water via a...
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Article
Open AccessTuning electronic and magnetic properties of partially hydrogenated graphene by biaxial tensile strain: a computational study
Using density functional theory calculations, we have investigated the effects of biaxial tensile strain on the electronic and magnetic properties of partially hydrogenated graphene (PHG) structures. Our study...
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Article
Open AccessLiFePO4 microcrystals as an efficient heterogeneous Fenton-like catalyst in degradation of rhodamine 6G
We present a novel heterogeneous Fenton-like catalyst of LiFePO4 (LFP). LFP has been widely used as an electrode material of a lithium ion battery, but we observed that commercial LFP (LFP-C) could act as a good ...
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Article
Open AccessFabrication of cobalt-nickel binary nanowires in a highly ordered alumina template via AC electrodeposition
Cobalt-nickel (Co-Ni) binary alloy nanowires of different compositions were co-deposited in the nanopores of highly ordered anodic aluminum oxide (AAO) templates from a single sulfate bath using alternating cu...
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Article
Formation of hierarchical TiO2 nanoporous structure from free-standing TiO2 nanotubes layers
Hierarchical TiO2 nanoporous structures with tailored porosity have been fabricated by simply annealing of free-standing TiO2 nanotubes (TNTs) layers in the presence of in situ trapped F-species. The hierarchical...
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Article
Open AccessImprovement in the photoelectrochemical responses of PCBM/TiO2 electrode by electron irradiation
The photoelectrochemical (PEC) responses of electron-irradiated [6, 6]-phenyl-C61-butyric acid methyl ester (PCBM)/TiO2 electrodes were evaluated in a PEC cell. By coating PCBM on TiO2 nanoparticle film, the ligh...
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Article
Open AccessImproved conversion efficiency of Ag2S quantum dot-sensitized solar cells based on TiO2 nanotubes with a ZnO recombination barrier layer
We improve the conversion efficiency of Ag2S quantum dot (QD)-sensitized TiO2 nanotube-array electrodes by chemically depositing ZnO recombination barrier layer on plain TiO2 nanotube-array electrodes. The optica...
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Open AccessFabrication of complete titania nanoporous structures via electrochemical anodization of Ti
We present a novel method to fabricate complete and highly oriented anodic titanium oxide (ATO) nano-porous structures with uniform and parallel nanochannels. ATO nano-porous structures are fabricated by anodi...
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Article
Open AccessStable Field Emitters for a Miniature X-ray Tube Using Carbon Nanotube Drop Drying on a Flat Metal Tip
Stable carbon nanotube (CNT) field emitters for a vacuum-sealed miniature X-ray tube have been fabricated. The field emitters with a uniform CNT coating are prepared by a simple drop drying of a CNT mixture so...
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Article
Open AccessSynthesis and Photocatalytic Activity of Anatase TiO2 Nanoparticles-coated Carbon Nanotubes
A simple and straightforward approach to prepare TiO2-coated carbon nanotubes (CNTs) is presented. Anatase TiO2 nanoparticles (NPs) with the average size ~8 nm were coated on CNTs from peroxo titanic acid (PTA) p...
