Controlled hydrothermal growth and optical characterization of wide band gap Be x Zn1−x O nanorod arrays

Zeng, Chunyan; Zhang, Weixin; Li, Bin Bin; Xu, Xiaofeng; Souza, C. F. de; Ruda, Harry E.

doi:10.1007/s10853-013-7197-9

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Recently, electrochemical synthesis approach by anodization technique has been used to synthesize TiO2 nanostructures such as nanotubes [19], nanopores [20], and nanochannels [21]. Anodization of valve metals relies on the equilibrium between field-assisted oxide layer growth and the chemical etching action of fluoride ions [22].…”

Section: Introductionmentioning

confidence: 99%

Highly-Organized One-Dimensional Copper-Doped Titanium Dioxide Nanotubes for Photoelectrocatalytic Degradation of Acid Orange 52

Lopez

Cleofe

Cañal

et al. 2019

KEM

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Highly-organized one-dimensional arrays of copper-doped titanium dioxide nanotubes (Cu-TiNTs) were synthesized in a one-pot approach by double anodization of titanium sheets. Field-emission scanning electron microscopy showed that Cu-TiNTs have an average inner diameter of 52.13 nm, a wall thickness of 14.28 nm, and a tube length of 0.6401 μm. Fourier-transform infrared spectroscopy confirmed the presence of characteristic O-Ti-O bond of TiO2. X-ray fluorescence spectroscopy confirmed copper-doping with an average dopant loading of 0.0248%. Even at this low dopant loading, Cu-TiNTs were shown to be photo-active in degrading Acid Orange 52 (AO 52) under UV light illumination. The kinetic profiles of AO 52 photoelectrochemical degradation were best described by the pseudo-first-order kinetic model (R2 ≥ 0.991) with kinetic constants 9.42 x 10-3 min-1 for Cu-TiNTs as compared to 6.04 x 10-3 min-1 for pristine TiNTs. Overall, doping pristine TiNTs with Cu was shown to enhance its photoelectrocatalytic properties in degrading textile dyes such as AO 52.

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