Luminescence Intensity Enhancement of Copper Doped Hydronium Alunite Synthesized under Hydrothermal Conditions Using Sulfates Solution

A novel phosphor, copper doped hydronium alunite ((H3O)Al3(SO4)2(OH)6:Cu), exhibiting a blue photoluminescence peak at a wavelength of 420 nm was successfully synthesized from aluminum and copper sulfates solution under hydrothermal condition (240 °C, 60 min). The measurement of XRD revealed that the obtained products were single phase with a crystal structure of (H3O)Al3(SO4)2(OH)6. Luminescence intensity of (H3O)Al3(SO4)2(OH)6:Cu synthesized from sulfates solution was 6.2 times higher than that from an aluminum nitrate solution mixed with an elemental sulfur and a copper nitrate solution. The increase of luminescence intensity was resulted from an improvement of the crystallinity of (H3O)Al3(SO4)2(OH)6.

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An investigation of polyhedral deformation in two mixed-metal diarsenates: SrZnAs2O7and BaCuAs2O7

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229615005616 ◽

2015 ◽

Vol 71 (4) ◽

pp. 330-337 ◽

Cited By ~ 2

Author(s):

Sabina Kovač ◽

Ljiljana Karanović ◽

Tamara Đorđević

Keyword(s):

Crystal Structure ◽

Single Crystal ◽

General Formula ◽

Three Dimensional ◽

X Ray Diffraction ◽

Hydrothermal Conditions ◽

X Ray ◽

Open Framework ◽

Geometrical Characteristics ◽

Barium Copper

Two isostructural diarsenates, SrZnAs2O7(strontium zinc diarsenate), (I), and BaCuAs2O7[barium copper(II) diarsenate], (II), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction. The three-dimensional open-framework crystal structure consists of corner-sharingM2O5(M2 = Zn or Cu) square pyramids and diarsenate (As2O7) groups. Each As2O7group shares its five corners with five differentM2O5square pyramids. The resulting framework delimits two types of tunnels aligned parallel to the [010] and [100] directions where the large divalent nine-coordinatedM1 (M1 = Sr or Ba) cations are located. The geometrical characteristics of theM1O9,M2O5and As2O7groups of known isostructural diarsenates, adopting the general formulaM1IIM2IIAs2O7(M1II= Sr, Ba, Pb;M2II= Mg, Co, Cu, Zn) and crystallizing in the space groupP21/n, are presented and discussed.

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A 2-D Zn(II) coordination polymer based on 4,5-imidazoledicarboxylate and bis(benzimidazole) ligands: synthesis, crystal structure and fluorescence properties

Zeitschrift für Naturforschung B ◽

10.1515/znb-2021-0003 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Xinzhao Xia ◽

Lixian Xia ◽

Geng Zhang ◽

Yuxuan Jiang ◽

Fugang Sun ◽

...

Keyword(s):

Crystal Structure ◽

Coordination Polymer ◽

Zigzag Chain ◽

Supramolecular Framework ◽

X Ray Diffraction ◽

Hydrothermal Conditions ◽

Hydrogen Bond Interaction ◽

X Ray ◽

New Type ◽

Solid State Fluorescence

Abstract In this work, a new type of zinc(II) coordination polymer {[Zn(HIDC)(BBM)0.5]·H2O} n (Zn-CP) was synthesized using 4,5-imidazoledicarboxylic acid (H3IDC) and 2,2-(1,4-butanediyl)bis-1,3-benzimidazole (BBM) under hydrothermal conditions. Its structure has been characterized by infrared spectroscopy, elemental analysis and single crystal X-ray diffraction analysis. The Zn(II) ion is linked by the HIDC2− ligand to form a zigzag chain by chelating and bridging, and then linked by BBM to form a layered network structure. Adjacent layers are further connected by hydrogen bond interaction to form a 3-D supramolecular framework. The solid-state fluorescence performance of Zn-CP shows that compared with free H3IDC ligand, its fluorescence intensity is significantly enhanced.

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Synthesis and crystal structure of carbonate cancrinite Na8[AlSiO4]6CO3(H2O)3.4, grown under low-temperature hydrothermal conditions

Microporous and Mesoporous Materials ◽

10.1016/s1387-1811(99)00046-3 ◽

1999 ◽

Vol 30 (2-3) ◽

pp. 347-358 ◽

Cited By ~ 35

Author(s):

K. Hackbarth ◽

Th.M. Gesing ◽

M. Fechtelkord ◽

F. Stief ◽

J.-Ch. Buhl

Keyword(s):

Crystal Structure ◽

Low Temperature ◽

Hydrothermal Conditions ◽

Synthesis And Crystal Structure

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Synthesis and crystal structure of a new polymorph of potassium europium(III) bis(sulfate) monohydrate, KEu(SO4)2·H2O

Acta Crystallographica Section E Crystallographic Communications ◽

10.1107/s2056989018000567 ◽

2018 ◽

Vol 74 (2) ◽

pp. 242-245 ◽

Cited By ~ 1

Author(s):

Avijit Kumar Paul

Keyword(s):

Crystal Structure ◽

Topological Analysis ◽

Structural Connectivity ◽

Three Dimensional ◽

Dimensional Structure ◽

Monoclinic Space Group ◽

Hydrothermal Conditions ◽

Metal Sulfate ◽

Synthesis And Crystal Structure ◽

Trigonal Prismatic

The mixed-metal sulfate, KEu(SO4)2·H2O, has been obtained as a new polymorph using hydrothermal conditions. The crystal structure is isotypic with NaCe(SO4)2·H2O and shows a three-dimensional connectivity of the tetrahedral sulfate units with EuIII and KI ions. Tricapped trigonal–prismatic EuO9 units and square-antiprismatic KO8 units link the SO4 tetrahedra, building the three-dimensional structure. Topological analysis reveals the existence of two nodes with 6- and 10-connected nets. The compound was previously reported [Kazmierczak & Höppe (2010). J. Solid State Chem. 183, 2087–2094] in the monoclinic space group P21/c with a similar structural connectivity and coordination environments to the present compound.

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Reaction of uranyl nitrate with carboxylic diacids under hydrothermal conditions. Crystal structure of complexes with l(+)-tartaric and oxalic acids

Polyhedron ◽

10.1016/j.poly.2006.07.024 ◽

2007 ◽

Vol 26 (1) ◽

pp. 101-106 ◽

Cited By ~ 59

Author(s):

Pierre Thuéry

Keyword(s):

Crystal Structure ◽

Uranyl Nitrate ◽

Hydrothermal Conditions ◽

Oxalic Acids

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Influence of Cu(NO3)2 content used in thermal shock method on the photocatalytic activity of Cu-Modified ZnO nanoparticles

Science and Technology Development Journal - Natural Sciences ◽

10.32508/stdjns.v5i2.1042 ◽

2021 ◽

Vol 5 (3) ◽

pp. first

Author(s):

Thế Luân Nguyễn ◽

Tiến Khoa Lê ◽

Châu Ngọc Hoàng ◽

Hữu Khánh Hưng Nguyễn ◽

Thị Kiều Xuân Huỳnh

Keyword(s):

Crystal Structure ◽

Methylene Blue ◽

Photocatalytic Activity ◽

Thermal Shock ◽

Photoelectron Spectroscopy ◽

Copper Content ◽

Uv Light ◽

Copper Nitrate ◽

X Ray ◽

Doped Zno

The Cu doped ZnO photocatalysts were prepared on ZnO substrate modified with copper nitrate by thermal shock method with different ratio % molar Cu : Zn = 0.3, 0.5, 1.0, 2.0 and 5.0 in order to study the impacts of copper content on the photocatalytic activity of ZnO under both UV and Vis light irradiation. The crystal structure, morphology bulk and surface were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Their photocatalytic activities were studied via time-dependent degradation of methylene blue in aqueous solution. The results exhibit that crystal structure and morphology of Cu doped ZnO photocatalysts is not modified significally than ZnO original but surface charateristicschanged greatly. The photocatalyst was doped with copper content under 2% showed formation of Cu species. These samples perform photocatalytic activity higher than ZnO. The CuNZO-0.05-500 had the highest rate constants for methylene blue degradation (kUV = 6,901 h-1, kVIS = 0,224 h-1), which are about 2.2 times and 1.3 times higher than unmodified ZnO under UV light and Vis light, respectively. However, the CuNZO-5.0-500 which had the formation of CuO phase and unchangeable ZnO's surface has photocatalytic activity similar to pure ZnO.

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A new form of NaMnAsO4

Acta Crystallographica Section E Crystallographic Communications ◽

10.1107/s2056989019008065 ◽

2019 ◽

Vol 75 (7) ◽

pp. 969-971

Author(s):

Matthias Weil ◽

Théo Veyer

Keyword(s):

Crystal Structure ◽

Manganese Oxide ◽

Trigonal Bipyramid ◽

Framework Structure ◽

Hydrothermal Conditions ◽

Coordination Numbers ◽

Distorted Octahedral Coordination ◽

Sodium Cations ◽

Distorted Octahedral ◽

New Form

A new form of NaMnAsO4, sodium manganese(II) orthoarsenate, has been obtained under hydrothermal conditions, and is referred to as the β-polymorph. In contrast to the previously reported orthorhombic α-polymorph that crystallizes in the olivine-type of structure and has one manganese(II) cation in a distorted octahedral coordination, the current β-polymorph contains two manganese(II) cations in [5]-coordination, intermediate between a square-pyramid and a trigonal bipyramid. In the crystal structure of β-NaMnAsO4, four [MnO5] polyhedra are linked through vertex- and edge-sharing into finite {Mn4O16} units strung into rows parallel to [100]. These units are linked through two distinct orthoarsenate groups into a framework structure with channels propagating parallel to the manganese oxide rows. Both unique sodium cations are situated inside the channels and exhibit coordination numbers of six and seven. β-NaMnAsO4 is isotypic with one form of NaCoPO4 and with NaCuAsO4.

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A novel single-phase white light emitting phosphor Ca9La(PO4)5(SiO4)F2:Dy3+: synthesis, crystal structure and luminescence properties

RSC Advances ◽

10.1039/c5ra23348h ◽

2016 ◽

Vol 6 (29) ◽

pp. 24577-24583 ◽

Cited By ~ 39

Author(s):

Haikun Liu ◽

Libing Liao ◽

Maxim S. Molokeev ◽

Qingfeng Guo ◽

Yuanyuan Zhang ◽

...

Keyword(s):

Crystal Structure ◽

High Temperature ◽

Solid State ◽

White Light ◽

Single Phase ◽

Luminescence Properties ◽

Light Emitting ◽

State Technology

A novel single-phase white light emitting phosphor Ca9La(PO4)5(SiO4)F2:Dy3+ was prepared through traditional high-temperature solid state technology.

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A first Mn member in the struvite morphotropic series, CsMn(H2O)6(PO4): hydrothermal synthesis, crystal structure and interconnections within the family of related phosphates

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229618009798 ◽

2018 ◽

Vol 74 (8) ◽

pp. 936-943

Author(s):

Galina V. Kiriukhina ◽

Olga V. Yakubovich ◽

Ekaterina M. Kochetkova ◽

Olga V. Dimitrova ◽

Anatoliy S. Volkov

Keyword(s):

Crystal Structure ◽

Ionic Radius ◽

The Novel ◽

X Ray Diffraction ◽

Unit Cell Parameters ◽

Hydrothermal Conditions ◽

X Ray ◽

Cell Parameters ◽

Structural Relationships ◽

The Family

Caesium manganese hexahydrate phosphate, CsMn(H2O)6(PO4), was synthesized under hydrothermal conditions. Its crystal structure was determined from single-crystal X-ray diffraction data. The novel phase crystallizes in the hexagonal space group P63 mc and represents the first manganese member in the struvite morphotropic series, AM(H2O)6(TO4). Its crystal structure is built from Mn(H2O)6 octahedra and PO4 tetrahedra linked into a framework via hydrogen bonding. The large Cs atoms are encapsulated in the framework cuboctahedral cavities. It is shown that the size of the A + ionic radius within the morphotropic series AM(H2O)6(XO4) results is certain types of crystal structures and affects the values of the unit-cell parameters. Structural relationships with Na(H2O)Mg(H2O)6(PO4) and the mineral hazenite, KNa(H2O)2Mg2(H2O)12(PO4)2, are discussed.

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