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Efficient and robust photocatalysts based on {P2W18} modified by an Ag complex†
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-02-12 00:00:00 , DOI: 10.1039/c8dt00229k Xiao-ying Fan 1, 2, 3, 4, 5 , Heng Guo 1, 2, 3, 4, 5 , Jing-hua Lv 1, 2, 3, 4, 5 , Kai Yu 1, 2, 3, 4, 5 , Zhan-hua Su 1, 2, 3, 4, 5 , Lu Wang 5, 6, 7, 8 , Chun-mei Wang 1, 2, 3, 4, 5 , Bai-bin Zhou 1, 2, 3, 4, 5
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-02-12 00:00:00 , DOI: 10.1039/c8dt00229k Xiao-ying Fan 1, 2, 3, 4, 5 , Heng Guo 1, 2, 3, 4, 5 , Jing-hua Lv 1, 2, 3, 4, 5 , Kai Yu 1, 2, 3, 4, 5 , Zhan-hua Su 1, 2, 3, 4, 5 , Lu Wang 5, 6, 7, 8 , Chun-mei Wang 1, 2, 3, 4, 5 , Bai-bin Zhou 1, 2, 3, 4, 5
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Two novel Wells–Dawson polyoxometalate-based compounds, (H2bimb)2[{Ag1.5(bimb)1.5}(P2W18O62)] (1), (H2bimb)2[Ag(bimb)]0.5[Ag(eim)2]0.5[P2W18O62]·H3O (2) (bimb = 1,4-bis(imidazole-l-yl)butane, eim = ethyl(imidazole)), have been synthesized under hydrothermal conditions and characterized by IR, thermogravimetric, XRD and single-crystal X-ray diffraction analyses. In compound 1, two “U”-type bimb ligands are connected together via π interactions of Ag–C to form a ring unit. The ring unit alternately links with the “Z”-type bimb via an Ag–N bond to form an infinite Z-shaped {Ag4(bimb)3}n chain. The adjacent two {P2W18} clusters bonded to two Ag1 ions on two adjacent Z-shaped chains to form an inorganic dimer linker, which further joins the Z-shaped chains together, resulting in unique organic–inorganic alternating 2-D layers. Adjacent 2D layers are further aggregated together via Ag–O bonds between the Dawson cluster and the Z-type chain on different layers to yield a 3-D network with a new topology {103}2{10}{4·102}4{42·104}2. In compound 2, the eim ligand was synthesized in situ from bimb, which acts as a small molecular ligand to alter the structure and adjust the catalytic activity of compound 2. Each Ag2 connects with the bimb ligand to form a linear {Ag(bimb)} chain. Adjacent chains are bonded together via the bimb ligand to generate a supermolecule 2-D layer, in which a Dawson dimer cluster as a guest molecule is embedded in both sides of the layer through supermolecule interactions. Such 2-D layers are further supported by Ag(eim)2 units leading to 3D supermolecule nets. In addition, the compounds exhibit excellent electrocatalytic behavior and better photocatalytic degradation capability for typical dyes than other Wells–Dawson POMs.
中文翻译：
由Ag复合物改性的 {P 2 W 18 }高效高效的光催化剂†
两种基于Wells-Dawson的多金属氧酸盐的新型化合物，（H 2 bimb）2 [{Ag 1.5（bimb）1.5 }（P 2 W 18 O 62）]（1），（H 2 bimb）2 [Ag（bimb）] 0.5 [Ag（eim）2 ] 0.5 [P 2 W 18 O 62 ]·H 3 O（2）（bimb = 1,4-双（咪唑-1-基）丁烷，eim =乙基（咪唑）），具有该化合物在水热条件下合成，并通过红外，热重分析，XRD和单晶X射线衍射分析进行了表征。在复合如图1所示，两个“ U”型二键配位体通过Ag–C的π相互作用连接在一起，形成一个环单元。环单元通过Ag–N键与“ Z”型支链交替连接，形成无限的Z形{Ag 4（bimb）3 } n链。相邻的两个{P 2 W 18 }团簇与两个相邻的Z形链上的两个Ag1离子结合形成一个无机二聚体连接子，进一步将Z形链连接在一起，从而形成独特的有机-无机交替二维层。相邻的2D层进一步聚合在一起经由Dawson群集和不同层上的Z型链之间的Ag–O键产生具有新拓扑的3-D网络{10 3 } 2 {10} {4·10 2 } 4 {4 2 ·10 4 } 2。在化合物2中，eim配体是由bimb原位合成的，它用作小分子配体，可改变结构并调节化合物2的催化活性。每个Ag2与Bimb配体连接形成线性{Ag（bimb）}链。相邻链通过Bimb配体产生超分子2-D层，其中Dawson二聚体簇作为客体分子通过超分子相互作用嵌入该层的两侧。此类2-D层进一步由形成3D超分子网的Ag（eim）2单元支撑。此外，与其他Wells-Dawson POM相比，该化合物对典型染料具有出色的电催化性能和更好的光催化降解能力。
更新日期：2018-02-12
中文翻译：
由Ag复合物改性的 {P 2 W 18 }高效高效的光催化剂†
两种基于Wells-Dawson的多金属氧酸盐的新型化合物，（H 2 bimb）2 [{Ag 1.5（bimb）1.5 }（P 2 W 18 O 62）]（1），（H 2 bimb）2 [Ag（bimb）] 0.5 [Ag（eim）2 ] 0.5 [P 2 W 18 O 62 ]·H 3 O（2）（bimb = 1,4-双（咪唑-1-基）丁烷，eim =乙基（咪唑）），具有该化合物在水热条件下合成，并通过红外，热重分析，XRD和单晶X射线衍射分析进行了表征。在复合如图1所示，两个“ U”型二键配位体通过Ag–C的π相互作用连接在一起，形成一个环单元。环单元通过Ag–N键与“ Z”型支链交替连接，形成无限的Z形{Ag 4（bimb）3 } n链。相邻的两个{P 2 W 18 }团簇与两个相邻的Z形链上的两个Ag1离子结合形成一个无机二聚体连接子，进一步将Z形链连接在一起，从而形成独特的有机-无机交替二维层。相邻的2D层进一步聚合在一起经由Dawson群集和不同层上的Z型链之间的Ag–O键产生具有新拓扑的3-D网络{10 3 } 2 {10} {4·10 2 } 4 {4 2 ·10 4 } 2。在化合物2中，eim配体是由bimb原位合成的，它用作小分子配体，可改变结构并调节化合物2的催化活性。每个Ag2与Bimb配体连接形成线性{Ag（bimb）}链。相邻链通过Bimb配体产生超分子2-D层，其中Dawson二聚体簇作为客体分子通过超分子相互作用嵌入该层的两侧。此类2-D层进一步由形成3D超分子网的Ag（eim）2单元支撑。此外，与其他Wells-Dawson POM相比，该化合物对典型染料具有出色的电催化性能和更好的光催化降解能力。
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