A Systematic Research on the Synthesis, Structures, and Application in Photocatalysis of Cluster-Based Coordination Complexes
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- 作者：Wei Meng ; Zhouqing Xu ; Jie Ding ; Dongqing Wu ; Xiao Han ; Hongwei Hou ; Yaoting Fan
- 刊名：Crystal Growth & Design
- 出版年：2014
- 出版时间：February 5, 2014
- 年：2014
- 卷：14
- 期：2
- 页码：730-738
- 全文大小：685K
- ISSN：1528-7505
文摘
To search for effective photocatalysts in the field of cluster-based coordination complexes, we synthesized {[Cd2(dcpp)(beb)2 (H2O)]路H2O}n (1), [Cd2(dcpp)(bmb)(H2O)2]n (2), {[Cd2(dcpp)(2,2鈥?bipy)(H2O)2]路2H2O}n (3), and {[Cd2(dcpp)(4,4鈥?bipy)0.5(H2O)3]路H2O}n (4) by utilizing a butterfly-shaped multidentate carboxylic acid (4,5-di(4鈥?carboxylphenyl)phthalic acid) (H4dcpp)) and N-donor ligands (1,4-bis(2-ethylbenzimidazol-1-ylmethyl) benzene (beb), 1,4-bis(2-methylbenzimidazol-1-ylmethyl) benzene (bmb), 2,2鈥?bipyridine (2,2鈥?bipy), 4,4鈥?bipyridine (4,4鈥?bipy)). Complexes 1鈥?b>4 are constructed based on different SBUs. Complexes 1 and 2 possess three-dimensional (3D) pillar-layered frameworks based on noncluster-type SBUs and dinuclear Cd2 clusters units, respectively. Complex 3 is a 3D porous structure building on Cd4 clusters SBUs. Complex 4 is constructed from rare infinite botryoid-like Cd cluster chains and exhibits a 3D complicated framework. The research on optical energy gaps of complexes 1鈥?b>4 indicates that these complexes are potential semiconductive materials. Moreover, complexes 1鈥?b>4 are applied to catalyze the reaction of photocatalytic degradation of methylene orange (MO) under high-pressure mercury lamp irradiation. Excitingly, they exhibit good photocatalytic properties in the presence of H2O2, and the degradation rates for 1鈥?b>4 increase from 43% (without photocatalyst) to 97, 78, 85, and 67%, respectively, after 100 min of irradiation. The photoluminescent properties of complexes 1鈥?b>4 were also studied.