Fabrication of CaGa2O4 nanofibers by electrospinning and CaGa2O4-assisted photodegradation of crystal violet in aqueous dispersions under visible light illumination

CaGa2O4 nanofibers were prepared by electrospinning technology. The morphology and structure of as-prepared CaGa2O4 nanofibers were characterized by scanning electron microscopy and X-ray diffraction, respectively. Based on the three-flux approximation, the direct band gap of CaGa2O4 nanofibers was...

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Published inThe Journal of physics and chemistry of solids Vol. 73; no. 1; pp. 73 - 78
Main Authors Zhou, Jian-Gang, Zhang, Zhao-Chun, Zheng, Hou-Li
Format Journal Article
LanguageEnglish
Published 01.01.2012
Subjects
Crystals
Dispersions
Electrospinning
Illumination
Mathematical models
Nanofibers
Photodegradation
Transformations
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Abstract CaGa2O4 nanofibers were prepared by electrospinning technology. The morphology and structure of as-prepared CaGa2O4 nanofibers were characterized by scanning electron microscopy and X-ray diffraction, respectively. Based on the three-flux approximation, the direct band gap of CaGa2O4 nanofibers was estimated from the UV-vis diffuse reflectance spectroscopy. From the results obtained in the photodegradation experiments, it is observed that the photodegradation of crystal violet can take place under exposure to visible light in aqueous CaGa2O4 dispersions. Mechanistically, crystal violet absorbs visible light radiation and self-sensitizes its own oxidative transformation. At low concentrations of crystal violet, the suitability of Langmuir model to describe the photoadsorption phenomenon has been checked.
AbstractList CaGa2O4 nanofibers were prepared by electrospinning technology. The morphology and structure of as-prepared CaGa2O4 nanofibers were characterized by scanning electron microscopy and X-ray diffraction, respectively. Based on the three-flux approximation, the direct band gap of CaGa2O4 nanofibers was estimated from the UV-vis diffuse reflectance spectroscopy. From the results obtained in the photodegradation experiments, it is observed that the photodegradation of crystal violet can take place under exposure to visible light in aqueous CaGa2O4 dispersions. Mechanistically, crystal violet absorbs visible light radiation and self-sensitizes its own oxidative transformation. At low concentrations of crystal violet, the suitability of Langmuir model to describe the photoadsorption phenomenon has been checked.
Author Zhang, Zhao-Chun
Zhou, Jian-Gang
Zheng, Hou-Li
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Snippet CaGa2O4 nanofibers were prepared by electrospinning technology. The morphology and structure of as-prepared CaGa2O4 nanofibers were characterized by scanning...
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SubjectTerms Crystals
Dispersions
Electrospinning
Illumination
Mathematical models
Nanofibers
Photodegradation
Transformations
Title Fabrication of CaGa2O4 nanofibers by electrospinning and CaGa2O4-assisted photodegradation of crystal violet in aqueous dispersions under visible light illumination
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