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Issue 39, 2012
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Controllable fabrication and broadband near-infrared luminescence of various Ni2+-activated ZnAl2O4 nanostructures by a single-nozzle electrospinning technique

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Abstract

By finely tuning the electrospun parameters (feeding rate of solution, working voltage and distance, etc.) and concentration of inorganic salts, various ZnAl2O4 nanostructures (nanoparticles, nanonecklaces, nanofibers, nanotubes and hollow micromelts) were controllably synthesized by a single-nozzle electrospinning technique. The formation mechanisms of different ZnAl2O4 nanostructures, including ‘oriented attachment’ mechanism, ‘gas-push’ mechanism, etc., were proposed to elucidate the morphology of the nanostructures and microstructure evolvement process. The morphology and microstructure of calcined electrospun nanostructures were considered to be mainly dependent on two factors, i.e. concentration of inorganic salts and size of as-prepared electrospun nanofibers. Using Ni2+ ions as activators, broadband near infrared (NIR) emission covering 1000–1400 nm peaking at about 1176 nm was detected in Ni2+-doped ZnAl2O4 nanostructures. The broadband NIR emission at around 1.3 μm optical communication window with a long lifetime of ∼640 μs makes Ni2+-doped ZnAl2O4 nanostructures as a promising candidate for micro/nano-broadband optical amplifiers, fibers, etc.

Graphical abstract: Controllable fabrication and broadband near-infrared luminescence of various Ni2+-activated ZnAl2O4 nanostructures by a single-nozzle electrospinning technique

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Publication details

The article was received on 02 Jul 2012, accepted on 13 Aug 2012 and first published on 14 Aug 2012


Article type: Paper
DOI: 10.1039/C2CP42235B
Citation: Phys. Chem. Chem. Phys., 2012,14, 13594-13600
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    Controllable fabrication and broadband near-infrared luminescence of various Ni2+-activated ZnAl2O4 nanostructures by a single-nozzle electrospinning technique

    G. Dong, M. Liang, H. Qin, G. Chai, X. Zhang, Z. Ma, M. Peng and J. Qiu, Phys. Chem. Chem. Phys., 2012, 14, 13594
    DOI: 10.1039/C2CP42235B

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