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Yingkou, China

He L.-J.,Yingkou University Zone | Zhang D.,Jilin University | Feng S.-H.,Jilin University | Zou B.,Jilin University | Chen G.,Jilin University
Chemical Research in Chinese Universities | Year: 2012

The perovskite-type AgTaO3 crystals were prepared by mild hydrothermal method and determined by powder X-ray diffraction. Rietveld refinement indicates that AgTaO3 crystallized in an orthorhombic system with the space group Pcmn. The lattice parameters are a=5.5822(1) nm, b=7.8522(2) nm and c=5.5347(1) nm, with α=β=γ= 90.0°. The compound was characterized by scanning electron microscopy(SEM), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy(HR-TEM) and UV-Vis diffuse reflectance spectrometry (UV-Vis DRS). The photocatalytic activity of AgTaO3 powder was evaluated by the degradation of Congo red under UV-light irradiation. The result shows that the titled compound has a high photocatalytic activity at room temperature and potential application in photocatalysis. Source


He L.-J.,Yingkou University Zone | Zhang D.,Jilin University | Feng S.-H.,Jilin University | Chen G.,Jilin University | Zou B.,Jilin University
Chemical Research in Chinese Universities | Year: 2012

Two perovskite-type fluorides K 2NaVF 6 and (NH 4) 3VF 6 were synthesized under mild hydrothermal conditions. The structures of the compounds were determined by means of powder X-ray diffraction analysis. The Rietveld refinement indicates that K2NaVF6 has a cubic elpasolite-type structure and crystallizes in space group Fm3m with lattice constant a=8.3180(2) nm. (NH 4) 3VF 6 has a cubic cryolite-type structure and crystallizes in space group Fm3 m with lattice parameter a=9.090(1) nm. The compounds were further characterized by scanning electron microscopy(SEM), thermogravimetric(TG) and differential thermal analysis(DTA). The variable temperature magnetic susceptibility of these two compounds was characterized for the first time and the result shows that the magnetic ordering is related to the crystallographic features and isolated magnetic unit with the temperature decreasing. Source


He L.-J.,Yingkou University Zone | Zhang D.,Jilin University | Feng S.-H.,Jilin University | Chen G.,Jilin University | Zou B.,Jilin University
Gongneng Cailiao/Journal of Functional Materials | Year: 2012

The perovskite-type AgNbO 3 crystals was prepared by mild hydrothermal method and determined by powder X-ray diffraction. Rietveld refinements indicate that AgNbO 3 crystallize in trigonal system with space group R-3C. The compounds were characterized by scanning electron microscopy (SEM), brunauer-emmet-teller surface area (BET), XPS, FT-IR and UV-Vis diffuse reflectance spectra (UV-Vis DRS). The photocatalytic activity of AgNbO 3 powders were evaluated by degradation of gentian violet under visible-light irradiation. The results show that the titled compounds have high photocatalytic activity at room temperature and potential future applications in photocatalysis. Source


Liu H.-Y.,Northeast Normal University | Liu H.-Y.,Yingkou University Zone | Ma J.-F.,Northeast Normal University | Liu Y.-Y.,Northeast Normal University | Yang J.,Northeast Normal University
CrystEngComm | Year: 2013

Eight new coordination polymers, namely, [Zn(m-bdc)(L)] (1), [Zn(NH 2-bdc)(L)] (2), [Zn3(p-bdc)3(L)]·2H 2O (3), [Zn3(btc)2(L)(H2O)] ·H2O (4), [Cd(o-bdc)(L)(H2O)] (5), [Cd(m-bdc)(L)] (6), [Cd(p-bdc)(L)(H2O)] (7) and [Cd2(btda)(L)] ·H2O (8) (m-H2bdc = 1,3-benzenedicarboxylic acid, NH2-H2bdc = 5-NH2-1,3-benzenedicarboxylic acid, p-H2bdc = 1,4-benzenedicarboxylic acid, H3btc = 1,3,5-benzenetricarboxylic acid, o-H2bdc = 1,2-benzenedicarboxylic acid, btda = 3,3′,4,4′-benzophenonetetracarboxylic dianhydride and L = 1,1′-(1,4-butanediyl)-bis[2-(3-pyridyl)benzimidazole]), have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction. Compounds 1 and 2 display bilayer structures. The neighboring layers of 2 are further linked by hydrogen-bonding interactions to form a 3D supramolecular architecture. Compound 3 shows a 3D 8-connected (3 6·410·511·6) topology. Compound 4 exhibits a 3D (3,4)-connected (5·7·8) 2(42·6·72·8) 2(42·52·6·7) 2(72·84) net. Compound 5 reveals a layer. The layers are further connected by π-π interactions to give rise to a 3D supramolecular architecture. Compound 6 shows a 3D framework with (3,5)-connected (42·6)(4·102) 2(43·6·84·102) topology. The structure of compound 7 is a 3D (3,4)-connected framework with (4·82)(4·9·10)2(42· 82·92·104) topology. Compound 8 displays a 3D (3,4)-connected (4·102)2(4 2·82·102)(42· 84)2 topology. Their photoluminescent behaviours have been investigated in detail. © 2013 The Royal Society of Chemistry. Source


Liu Y.-Y.,Northeast Normal University | Liu H.-Y.,Yingkou University Zone | Ma J.-F.,Northeast Normal University | Yang Y.,Northeast Normal University | Yang J.,Northeast Normal University
CrystEngComm | Year: 2013

Seven new coordination polymers, namely, [Zn2(o-bdc) 2(L)2]·H2O (1), [Cd2(o-bdc) 2(L)2]·6H2O (2), [Zn2(m-bdc) 2(L)(H2O)] (3), [Cd2(m-bdc)2(L)] ·2H2O (4), [Zn3(p-bdc)3(L) 2]·H2O (5), [Zn2(btec)(L) 2]·H2O (6) and [Cd2(btec)(L) 2]·H2O (7) (o-H2bdc = 1,2-benzenedicarboxylic acid, m-H2bdc = 1,3-benzenedicarboxylic acid, p-H2bdc = 1,4-benzenedicarboxylic acid, H4btec = 1,2,4,5-benzenetetracarboxylic acid and L = 1,3,5-tris(1H-1,2,4-triazol-1- ylmethyl)-2,4,6-trimethylbenzene) have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction. Compound 1 displays a 1D ladder structure. The neighboring ladders are further linked by π-π interactions to form a 2D supramolecular layer. Compound 2 shows a 3D (3,5)-connected framework with (63)(66·8 4) topology. Compound 3 exhibits a 2D layer structure. The layers are further connected by hydrogen-bonds to give rise to a 3D supramolecular architecture. Compound 4 shows a 3D (4,5)-connected (4·8 5)(44·62·84) 2 net. Compound 5 displays a 2D layer with self-penetrating characters. Hydrogen bonds among the water molecules and the p-bdc anions further link the layers into a 3D supramolecular architecture. Compound 6 displays a 2D sheet with dangling arms. Each sheet is threaded by the dangling arms of two others, leading to an unusual 3D polythreading framework. Compound 7 shows a 3D (3,4,5)-connected framework with (62·8) 2(65·8)(65·84· 10)2 topology. The photoluminescent properties of compounds 1-7 have been investigated in detail. © 2013 The Royal Society of Chemistry. Source

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