Ethanol sensing properties of CuO nanowires prepared by an oxidation reaction

Raksa, Phathaitep; Gardchareon, Atcharawon; Chairuangsri, Torranin; Mangkorntong, Pongsri; Mangkorntong, N.; Choopun, Supab

doi:10.1016/j.ceramint.2008.01.028

Cited by 130 publications

(49 citation statements)

References 12 publications

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“…Figure 7 shows the UVvis spectrum of the hierarchical CuO nanoarchitectures prepared at 120 °C for 24 h, which has a broad absorption band centered at about 660 nm. Compared with the reported value for bulk CuO (E g = 1.2 eV) [28], an obvious blue-shift can be seen. The blue-shift can be attributed to the quantum size effect because of the very small size of the CuO nanorods.…”

Section: Methodsmentioning

confidence: 62%

Facile synthesis and characterization of hierarchical CuO nanoarchitectures by a simple solution route

Wang¹,

Meng²,

Liu³

et al. 2009

Cryst. Res. Technol.

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The controlled synthesis of hierarchical CuO nanomaterials in a solution phase has been realized with high yield at low temperature using copper acetate hydrate and NaOH as starting materials with the assistance of surfactant under hydrothermal conditions. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultraviolet-visible spectroscopy (UV-Vis) were used to characterize the products. It was shown that the hierarchical CuO nanoarchitectures were formed through aggregation of tiny single-crystal CuO nanorods. Experiments demonstrated that the morphology of CuO products was significantly influenced by hydrothermal temperature and reaction time. A rational growth mechanism based on oriented attachment was proposed for the selective formation of the hierarchical CuO nanoarchitectures. Our work demonstrated the growth of hierarchical CuO nanoarchitectures built from onedimentional nanorods through a one-step solution-phase chemical route under controlled conditions. In addition, The UV-Vis spectrum of the hierarchical CuO nanoarchitectures showed large blue shift because of the quantum size effect.

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Section: Methodsmentioning

confidence: 62%

Facile synthesis and characterization of hierarchical CuO nanoarchitectures by a simple solution route

Wang¹,

Meng²,

Liu³

et al. 2009

Cryst. Res. Technol.

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show abstract

“…6 shows the absorption spectrum of the as-deposited CuO thin film, which shows an onset of absorption at about 425 nm, corresponds to the band gap energy (E g ) of $2.9 eV. Compared with the reported value of E g for bulk CuO (E g ¼1.2 eV) [15], a blue-shift in band gap energy by an amount of 1.7 eV is evident here, which is due to the quantum confinement effect exerted by the nanosize crystals. Fig.…”

Section: Uv-vis Studiesmentioning

confidence: 89%

Chemical synthesis of mesoporous CuO from a single precursor: Structural, optical and electrical properties

Maji¹,

Mukherjee²,

Mondal³

et al. 2010

Journal of Solid State Chemistry

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“…Nanostructures of Cu x O for ethanol vapour sensing can be prepared by several techniques such as thermal oxidation [19][20][21], hydrothermal [22][23][24][25], chemical vapour deposition [9], DC reactive magnetron sputtering [26,27] and solvothermal techniques [28,29]. However, amongst these techniques, RF magnetron sputtering has several advantages such as high control over the deposition parameters (e.g.…”

Section: Introductionmentioning

confidence: 99%