期刊
DALTON TRANSACTIONS
卷 44, 期 20, 页码 9496-9505出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5dt01042j
关键词
-
资金
- 973 key program of the MOST [2010CB933501, 2012CB821705]
- Chinese Academy of Sciences [KJCX2-YW-319, KJCX2-EW-H01]
- National Natural Science Foundation of China [21373221, 21221001, 91122027, 51172232, 21403236]
- Natural Science Foundation of Fujian Province [2012J06006, 2011HZ0001-1, 2006L2005, 2009HZ0004-1, 2009HZ0005-1, 2007HZ0001-1]
The hydrothermal reactions of a mixture of (NH4)(6)Mo7O24 center dot 4H(2)O, Cu(Ac)(2)center dot H2O and 3-bpo ligands at different temperatures result in the isolation of two novel inorganic-organic hybrid materials containing different but related isopolymolybdate units, [Cu(3-bpo)(H2O)(Mo4O13)]center dot 3H(2)O (1) and [Cu-2(3-bpo)(2)(Mo6O20)] (2). The {Mo4O13}(n) chains in 1 and unprecedented [Mo6O20](4-) isopolyhexamolybdate anions in 2 are linked by octahedral Cu2+ ions into two-dimensional hybrid layers. Interestingly, 3-bpo ligands in both 1 and 2 are located on either side of these hybrid layers and serve as arched footbridges to link Cu(II) ions in the layer via pyridyl N-donors, and at the same time connect these hybrid layers into 3D supramolecular frameworks via weak Mo center dot center dot center dot N-oxadiazole bonds. Another important point for 1 is that water clusters are filled in the 1D channels surrounded by isopolytetramolybdate units. In addition, dye adsorption and photocatalytic properties of 1 and magnetic properties of 1-2 have been investigated. The results indicated that complex 1 is not only a good heterogeneous photocatalyst in the degradation of methyl orange (MO) and methylene blue (MB), but also has high absorption capacity of MB at room temperature and can selectively capture MB molecules from binary mixtures of MB/MO or MB/RhB. All MB molecules absorbed on 1 can be completely released and photodegraded in the presence of adequate peroxide. The temperature dependence of magnetic susceptibility revealed that complex 2 exhibits anti-ferromagnetic ordering at about 5 K, and a spin-flop transition was observed at about 5.8 T at 2 K, indicating metamagnetic-like behaviour from antiferromagnetic to ferromagnetic phases.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据