期刊
NANO RESEARCH
卷 7, 期 6, 页码 903-916出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-014-0452-9
关键词
WOx-ethylenediamine; nanowires; synchrotron-radiation; X-ray diffraction; heavy metal; water treatment; catalysis
类别
资金
- National Basic Research Program of China [2009CB930400]
- National Natural Science Foundation of China [NSFC 21121063]
- Chinese Academy of Sciences [GJHZ1224]
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
- CSIRO Office of the Chief Executive (OCE) Postdoctoral and Science Leader Schemes
- Australian Research Council [FT0990583]
Inorganic-organic hybrid WOx-ethylenediamine (WOx-EDA) nanowires have been produced by a simple, low-cost and high-yield solvothermal method. These WOx-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 WOx frameworks. In situ synchrotron-radiation X-ray diffraction is used to elucidate a possible formation mechanism of the hybrid WOx-EDA. The nanowire morphology, lamellar structure and abundant functional amino groups endow them with versatile abilities. For example, in heavy metal ion adsorption the WOx-EDA nanowires display exceptional adsorption capabilities of 925 mg.g(-1) for Pb2+ and 610 mg.g(-1) for UO22+. 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.
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