Investigation of the influence of Eu, Yb, and Eu:Yb codoping on ZnO highly-crystalline nanofibers prepared by electrospinning method.
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| Title: | Investigation of the influence of Eu, Yb, and Eu:Yb codoping on ZnO highly-crystalline nanofibers prepared by electrospinning method. |
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| Authors: | Zaborowska, Marta1 (AUTHOR) marta.zaborowska@polsl.pl, Tański, Tomasz1 (AUTHOR), Matysiak, Wiktor2 (AUTHOR), Skóra, Paweł3 (AUTHOR) |
| Source: | Materials Research Bulletin. Dec2023, Vol. 168, pN.PAG-N.PAG. 1p. |
| Subjects: | Rare earth metals, Photon upconversion, Nanofibers, Electrospinning, Polyacrylonitriles, Cellulose acetate, Energy bands, Zinc oxide |
| Abstract: | • undoped and Eu,Yb-doped nanofibers with high rare earth metals concentration. • SEM, TEM, XRD, Raman, XPS, FTIR and UV/Vis results has been analyzed. • influence of Eu, Yb and Eu:Yb cooping on ZnO was investigated. • reduction of Eg value from 3.02 eV for pure ZnO nanofibers to 2.55 eV for ZnO:Eu:Yb. • potential application as photon upconversion material for photocatalysis was proposed. Facile synthesis method of undoped and rare earth metals (REM) doped (RE = Yb, Eu and Eu:Yb) one-dimensional ZnO nanostructures with high REM concentration using electrospinning followed by calcination at 500 °C were carried out. One-dimensional (1D) ceramic nanostructures were characterized in terms of morphology, structure, and optical properties. The analysis carried out revealed highly crystalline nature of ZnO wurtzite structure and hybrid nanofibers with a mixture of crystalline phases. High-resolution X-Ray Photon Spectroscopy spectra confirmed successful Eu and Yb modification of ZnO lattice revealing the existence of Eu2+, Eu3+ and Yb3+ ions. The optical properties results showed reduction in optical energy band gap from 3.02 eV to 2.55 eV for undoped and Eu:Yb doped ZnO 1D nanostructures, respectively. The influence of Eu, Yb, and Eu:Yb codoping on ZnO electrospun nanostructures was investigated, and potential application of such obtained nanofibers was proposed as photon upconversion material for photocatalysis. [Display omitted] [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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