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Versatile inorganic-organic hybrid WO x -ethylenediamine nanowires: Synthesis, mechanism and application in heavy metal ion adsorption and catalysis

Li, W., Xia, F., Qu, J., Li, P., Chen, D., Chen, Z., Yu, Y., Lu, Y., Caruso, R.A. and Song, W. (2014) Versatile inorganic-organic hybrid WO x -ethylenediamine nanowires: Synthesis, mechanism and application in heavy metal ion adsorption and catalysis. Nano Research, 7 (6). pp. 903-916.

Link to Published Version: http://dx.doi.org/10.1007/s12274-014-0452-9
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Abstract

Inorganic-organic hybrid WO x -ethylenediamine (WO x -EDA) nanowires have been produced by a simple, low-cost and high-yield solvothermal method. These WO x -EDA hybrid nanowires have unique lamellar mesostructures with an alternate stacking of an interconnected [WO6] octahedral layer and a monolayer of ethylenediamine molecules. This hybrid structure integrated the functionality of ethylenediamine with the stability of the WO x frameworks. In situ synchrotronradiation X-ray diffraction is used to elucidate a possible formation mechanism of the hybrid WO x -EDA. The nanowire morphology, lamellar structure and abundant functional amino groups endow them with versatile abilities. For example, in heavy metal ion adsorption the WO x -EDA nanowires display exceptional adsorption capabilities of 925 mg·g−1 for Pb2+ and 610 mg·g−1 for UO 2 2+ . The nanowires also show outstanding stability and activity as a heterogeneous base catalyst in the Knoevenagel condensation reaction at room temperature. The catalyst can be recycled and reused for 20 cycles with nearly 100% yields. This study provides a new strategy to design inorganic-organic hybrid materials, and offers a multifunctional material that is a highly efficient adsorbent and sustainable catalyst.

Publication Type: Journal Article
Publisher: Tsinghua University Press
URI: http://researchrepository.murdoch.edu.au/id/eprint/30447
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