Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/655
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Razali, MH | en_US |
dc.contributor.author | Noor, AFM | en_US |
dc.contributor.author | Yusoff, M. | en_US |
dc.date.accessioned | 2021-01-28T01:46:20Z | - |
dc.date.available | 2021-01-28T01:46:20Z | - |
dc.date.issued | 2020-02 | - |
dc.identifier.issn | 1533-4880 | - |
dc.identifier.uri | http://hdl.handle.net/123456789/655 | - |
dc.description | Web of Science | en_US |
dc.description.abstract | In this study, a series of copper-ion-doped titanium dioxide (Cu-ion-doped TiO2) nanotubes (NTs) were synthesized via a hydrothermal method by the concentration variation of doped Cu ions (0.00, 0.50, 1.00, 2.50, and 5.00 mmol). In addition, the samples were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), nitrogen gas adsorption measurements, and ultraviolet-visible (UV-Vis) diffuse-reflectance spectroscopy. The photocatalytic activity of the Cu-ion-doped TiO2 NTs was investigated for the degradation of methyl orange (MO) under sunlight. The results obtained from the structural and morphological studies revealed that, at low concentrations of Cu-doped TiO2 NTs, Cu is incorporated into the interstitial positions of the TiO2 lattice, affording a new phase of TiO2 (hexagonal) instead of the anatase TiO2 (tetragonal) observed for undoped TiO2 NTs. EDX analysis confirmed the presence of Cu in the TiO2-based photocatalyst. All of the investigated samples exhibited a hollow fibrous-like structure, indicative of an NT morphology. The inner and outer diameters of the NTs were 4 nm and 10 nm, respectively. The photocatalysts exhibited a large surface area due to the NT morphology and a type IV isotherm and H3 hysteresis, corresponding to the mesopores and slit-shaped pores. The Cu-ion-doped TiO2 NTs were excited by sunlight because of their low bandgap energy; and after the incorporation of Cu ions into the interstitial positions of the TiO2 lattice, the NTs exhibited high visible-light activity owing to the low bandgap. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER SCIENTIFIC PUBLISHERS | en_US |
dc.relation.ispartof | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | en_US |
dc.subject | Copper Ion | en_US |
dc.subject | Doping | en_US |
dc.subject | TiO2 | en_US |
dc.subject | Degradation | en_US |
dc.subject | Photocatalyst | en_US |
dc.title | Physicochemical Properties of a Highly Efficient Cu-Ion-Doped TiO2 Nanotube Photocatalyst for the Degradation of Methyl Orange Under Sunlight | en_US |
dc.type | International | en_US |
dc.identifier.doi | 10.1166/jnn.2020.16944 | - |
dc.description.page | 965-972 | en_US |
dc.volume | 20(2) | en_US |
dc.description.type | Article | en_US |
dc.description.impactfactor | 1.134 | en_US |
dc.description.quartile | Q4 | en_US |
item.fulltext | No Fulltext | - |
item.openairetype | International | - |
item.languageiso639-1 | en | - |
item.grantfulltext | none | - |
crisitem.author.dept | Universiti Malaysia Kelantan | - |
Appears in Collections: | Faculty of Bioengineering and Technology - Journal (Scopus/WOS) |
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