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- W2102882605 abstract "The present study revealed a surprising valence transformation of copper (Cu) in the sintering process of mixtures of copper chloride dihydrate (CuCl2·2H2O) with β-cyclodextrin (β-CD) in ambient atmosphere. Such a transformation in Cu valence states can be modulated by changing the initial molar ratio (IMR) of CuCl2·2H2O to β-CD in the mixtures. Firstly, as the value of IMR decreased, the content of cuprous chloride (CuCl) decreased, while the content of cupric oxide (CuO) increased gradually. That is to say, there is an unambiguous IMR-dependence of the contents of CuCl and CuO formed. However, such a controllable valence transformation from Cu(II) to Cu(I) to Cu(II) did not happen in nitrogen atmosphere. Secondly, the in situ composite of CuCl and CuO produced a highly ordered structure of self-assembled nanowires, intertwined, with a diameter of 30 to 50 nm. Furthermore, electronic structural analysis provided direct evidence that the Cu–Cl and Cu–O bonds in this composite material were simultaneously impaired by self-assembled growth. Finally, we noticed that the photoluminescence property of CuCl was regulated through the formation of composites with CuO. In addition, this in situ composite synthesis technique was used to modify the magnetic property of CuO. Furthermore, the anomalous ferromagnetic behaviour of the CuO nanocrystal was observed and explained. In short, this work not only demonstrates a flexible and easily controllable valence transformation of Cu, but also provides a novel approach for constructing inorganic nanocomposite materials. We believe that the implications of these findings are important and make significant contributions to the development of inorganic chemistry and material science." @default.
- W2102882605 created "2016-06-24" @default.
- W2102882605 creator A5005859555 @default.
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- W2102882605 date "2012-01-01" @default.
- W2102882605 modified "2023-09-25" @default.
- W2102882605 title "A controllable transformation in copper valence states and its applications" @default.
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- W2102882605 doi "https://doi.org/10.1039/c2dt11666a" @default.
- W2102882605 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22200050" @default.
- W2102882605 hasPublicationYear "2012" @default.
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