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Gu J, Duan F, Liu S, Cha W, Lu J. Phase Engineering of Nanostructural Metallic Materials: Classification, Structures, and Applications. Chem Rev 2024; 124:1247-1287. [PMID: 38259248 DOI: 10.1021/acs.chemrev.3c00514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Metallic materials are usually composed of single phase or multiple phases, which refers to homogeneous regions with distinct types of the atom arrangement. The recent studies on nanostructured metallic materials provide a variety of promising approaches to engineer the phases at the nanoscale. Tailoring phase size, phase distribution, and introducing new structures via phase transformation contribute to the precise modification in deformation behaviors and electronic structures of nanostructural metallic materials. Therefore, phase engineering of nanostructured metallic materials is expected to pave an innovative way to develop materials with advanced mechanical and functional properties. In this review, we present a comprehensive overview of the engineering of heterogeneous nanophases and the fundamental understanding of nanophase formation for nanostructured metallic materials, including supra-nano-dual-phase materials, nanoprecipitation- and nanotwin-strengthened materials. We first review the thermodynamics and kinetics principles for the formation of the supra-nano-dual-phase structure, followed by a discussion on the deformation mechanism for structural metallic materials as well as the optimization in the electronic structure for electrocatalysis. Then, we demonstrate the origin, classification, and mechanical and functional properties of the metallic materials with the structural characteristics of dense nanoprecipitations or nanotwins. Finally, we summarize some potential research challenges in this field and provide a short perspective on the scientific implications of phase engineering for the design of next-generation advanced metallic materials.
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Affiliation(s)
- Jialun Gu
- Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Fenghui Duan
- Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Sida Liu
- Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Laboratory for Multiscale Mechanics and Medical Science, SV LAB, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
| | - Wenhao Cha
- Faculty of Georesources and Materials Engineering, RWTH Aachen University, Aachen 52056, Germany
| | - Jian Lu
- Department of Mechanical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
- CityU-Shenzhen Futian Research Institute, No. 3, Binglang Road, Futian District, Shenzhen 518000, China
- Centre for Advanced Structural Materials, City University of Hong Kong Shenzhen Research Institute, Greater Bay Joint Division, Shenyang National Laboratory for Materials Science, Shenzhen 518000, China
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Hussain A, Lou B, Bushira FA, Xia S, Liu F, Guan Y, Chen W, Xu G. Ultrafast Response and High Selectivity of Diethylamine Gas Sensors at Room Temperature Using MOF-Derived 1D CuO Nano-Ellipsoids. Anal Chem 2023; 95:17568-17576. [PMID: 37988575 DOI: 10.1021/acs.analchem.3c02890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Environmental and health monitoring requires low-cost, high-performance diethylamine (DEA) sensors. Materials based on metal-organic frameworks (MOFs) can detect hazardous gases due to their large specific surface area, many metal sites, unsaturated sites, functional connectivity, and easy calcination to remove the scaffold. However, developing facile materials with high sensitivity and selectivity in harsh environments for accurate DEA detection at a low detection limit (LOD) at room temperature (RT) is challenging. In this study, p-type semiconducting porous CuOx sensing materials were synthesized using a simple solvothermal process and annealed in an argon atmosphere at three different temperatures (x = 400, 600, and 800 °C). Significant variations in particle size, specific area, crystallite size, and shape were noticed when the annealing temperature was elevated. Cu-MIL-53 annealed at 400 °C (CuO-400) has a typical nanoellipsoid (NEs) shape with a length of 61.5 nm and a diameter of 33.2 nm. Surprisingly, CuO-400 NEs showed an excellent response to DEA with an ultra-LOD (Rg/Ra = 7.3 @ 100 ppb, 55% relative humidity), excellent selectivity and sensitivity (Rg/Ra = 236 @ 15 ppm), exceptional long-term stability and repeatability, and a fast response/recovery period at RT, outperforming most previously reported materials. CuO-400 NEs have outstanding gas-sensing characteristics due to their high porosity, 1D nanostructure, unsaturated Cu sites (Cu+ and Cu2+), large specific surface area, and numerous oxygen vacancies. This study presents a generic approach to produce future CuO derived from Cu-MOFs-sensitive materials, revealing new insights into the design of effective sensors for environmental monitoring at RT.
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Affiliation(s)
- Altaf Hussain
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of Science and Technology of China, No. 96 Jinzhai Road, Hefei 230026, Anhui, P. R. China
| | - Baohua Lou
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of Science and Technology of China, No. 96 Jinzhai Road, Hefei 230026, Anhui, P. R. China
| | - Fuad Abduro Bushira
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of Science and Technology of China, No. 96 Jinzhai Road, Hefei 230026, Anhui, P. R. China
| | - Shiyu Xia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of Science and Technology of China, No. 96 Jinzhai Road, Hefei 230026, Anhui, P. R. China
| | - Fangshuo Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of Science and Technology of China, No. 96 Jinzhai Road, Hefei 230026, Anhui, P. R. China
| | - Yiran Guan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of Science and Technology of China, No. 96 Jinzhai Road, Hefei 230026, Anhui, P. R. China
| | - Wei Chen
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of Science and Technology of China, No. 96 Jinzhai Road, Hefei 230026, Anhui, P. R. China
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, Guangxi, P. R. China
| | - Guobao Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of Science and Technology of China, No. 96 Jinzhai Road, Hefei 230026, Anhui, P. R. China
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Structural, Spectroscopic, and Thermal Decomposition Features of [Carbonatotetraamminecobalt(III)] Iodide—Insight into the Simultaneous Solid-Phase Quasi-Intramolecular Redox Reactions. INORGANICS 2023. [DOI: 10.3390/inorganics11020068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
[κ2-O,O′-Carbonatotetraamminecobalt(III)] iodide, or [Co(NH3)4CO3]I, named in this paper as compound 1, was prepared and characterized comprehensively with spectroscopic (IR, Raman and UV) and single-crystal X-ray diffraction methods. Compound 1 was orthorhombic, and isomorphous with the analogous bromide. The four ammonia ligands and the carbonate anion were coordinated to the central cobalt cation in a distorted octahedral geometry. The carbonate ion formed a four-membered symmetric planar chelate ring. The complex cations were bound to each other by N-H···O hydrogen bonds and formed zigzag sheets via an extended 2D hydrogen bond network. The complex cations and iodide ions were arranged into ion pairs and each cation bound its iodide pair through three hydrogen bonds. The thermal decomposition started with the oxidation of the iodide ion by CoIII in the solid phase resulting in [Co(NH3)4CO3] and I2. This intermediate CoII-complex in situ decomposed into Co3O4 and C-N bond containing intermediates. In inert atmosphere, CO or C-N bond containing compounds, and also, due to the in situ decomposition of CoCO3 intermediate, Co3O4 was formed. The quasi-intramolecular solid-phase redox reaction of [Co(NH3)4CO3] might have resulted in the formation of C-N bond containing compounds with substoichiometric release of ammonia and CO2 from compound 1. The C-N bond containing intermediates reduced Co3O4 into CoO and Co, whereas in oxygen-containing atmosphere, the end-product was Co3O4, even at 200 °C, and the endothermic ligand loss reaction coincided with the consecutive exothermic oxidation processes.
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Synthesis and characterization of copper manganate-decorated zirconium dioxide nanoparticles and its photocatalytic application. APPLIED NANOSCIENCE 2023. [DOI: 10.1007/s13204-023-02774-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Catalytic Properties of the Spinel-Like CuxMn3−xO4 Copper Manganese Oxides—An Overview. Catalysts 2023. [DOI: 10.3390/catal13010129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Copper manganese oxide spinels and related (multiphase) materials with the formula CuxMn3−xO4 are the active catalysts in a wide variety of industrially important processes due to their great diversity in their phase relations, metal ion valence/site distribution, and chemical properties. In this review, we summarize the preparation methods and their effects on the composition, properties, and catalytic properties of various CuxMn3−xO4 catalysts with various Cu/Mn ratios. The main summarized catalytic reactions are the oxidation of carbon monoxide, nitrogen oxide, and hydrogen sulfide and the oxidative removal of organic solvents such as benzene, toluene, and xylene from the air. Some industrially important reactions (steam reforming of methanol or synthesis gas) and the manufacture of organic chemicals (methyl formate, propylene oxide, and benzyl alcohol) catalyzed by CuxMn3−xO4 spinels are also reviewed.
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[Hexaamminecobalt(III)] Dichloride Permanganate—Structural Features and Heat-Induced Transformations into (CoII,MnII)(CoIII,MnIII)2O4 Spinels. INORGANICS 2022. [DOI: 10.3390/inorganics10120252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We synthesized and characterized (IR, Raman, UV, SXRD) hexaamminecobalt(III) dichloride permanganate, [Co(NH3)6]Cl2(MnO4) (compound 1) as the precursor of Co–Mn–spinel composites with atomic ratios of Co:Mn = 1:1 and 1:3. The 3D−hydrogen bond network includes N–HO–Mn and N–HCl interactions responsible for solid-phase redox reactions between the permanganate anions and ammonia ligands. The temperature-limited thermal decomposition of compound 1 under the temperature of boiling toluene (110 ∘C) resulted in the formation of (NH4)4Co2Mn6O12. which contains a todorokite-like manganese oxide network (MnII4MnIII2O1210−). The heat treatment products of compounds 1 and [Co(NH3)5Cl](MnO4)2 (2) synthesized previously at 500 ∘C were a cubic and a tetragonal spinel with Co1.5Mn1.5O4 and CoMn2O4 composition, respectively. The heating of the decomposition product of compounds 1 and 2 that formed under refluxing toluene (a mixture with an atomic ratio of Co:Mn = 1:1 and 1:2) and after aqueous leaching ((NH4)4Co2Mn6O12, 1:3 Co:Mn atomic ratio in both cases) at 500 ∘C resulted in tetragonal Co0.75Mn2.25O4 spinels. The Co1.5Mn1.5O4 prepared from compound 1 at 500 ∘C during the solid-phase decomposition catalyzes the degradation of Congo red with UV light. The decomposition rate of the dye was found to be nine times faster than in the presence of the tetragonal CoMn2O4 spinel prepared in the solid-phase decomposition of compound 2. The todorokite-like intermediate prepared from compound 1 under N2 at 115 ∘C resulted in a 54 times faster degradation of Congo red, which is a great deal faster than the same todorokite-like phase that formed from compound 2 under N2.
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The Synthesis of Cu–Mn–Al Mixed-Oxide Combustion Catalysts by Co-Precipitation in the Presence of Starch: A Comparison of NaOH with Organic Precipitants. Catalysts 2022. [DOI: 10.3390/catal12101159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Cu–Mn mixed oxides are well known as active combustion catalysts. The common method for their synthesis is based on co-precipitation, with NaOH as a precipitant, and is burdened with the possibility of introducing undesired Na contamination. This work describes the use of two organic bases, tetrabutylammonium hydroxide and choline hydroxide, as precipitating agents in a novel alkali-free route for Cu–Mn–Al catalyst synthesis. To obtain fine crystalline precursors, which are considered advantageous for the preparation of active catalysts, co-precipitation was carried out in the presence of starch gel. Reference materials prepared with NaOH in the absence of starch were also obtained. Mixed oxides were produced by calcination at 450 °C. The precursors contained MnCO3 doped with Cu and Al, and an admixture of amorphous phases. Those prepared in the presence of starch were less crystalline and retained biopolymer residues. The combustion of these residues during calcination enhanced the formation of larger amounts of the Cu1.5Mn1.5O4 spinel phase, with better crystallinity in comparison to catalysts prepared from conventionally synthesized precursors. Tests of toluene combustion demonstrated that the catalysts prepared with starch performed better than those obtained in starch-free syntheses, and that the mixed oxides obtained by the alkali-free route were more active than catalysts prepared with NaOH. Catalytic data are discussed in terms of property–performance relationships.
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Béres KA, Homonnay Z, Kvitek L, Dürvanger Z, Kubikova M, Harmat V, Szilágyi F, Czégény Z, Németh P, Bereczki L, Petruševski VM, Pápai M, Farkas A, Kótai L. Thermally Induced Solid-Phase Quasi-Intramolecular Redox Reactions of [Hexakis(urea- O)iron(III)] Permanganate: An Easy Reaction Route to Prepare Potential (Fe,Mn)O x Catalysts for CO 2 Hydrogenation. Inorg Chem 2022; 61:14403-14418. [PMID: 36044722 PMCID: PMC9477215 DOI: 10.1021/acs.inorgchem.2c02265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Research on new reaction routes and precursors to prepare
catalysts
for CO2 hydrogenation has enormous importance. Here, we
report on the preparation of the permanganate salt of the urea-coordinated
iron(III), [hexakis(urea-O)iron(III)]permanganate
([Fe(urea-O)6](MnO4)3) via an affordable
synthesis route and preliminarily demonstrate the catalytic activity
of its (Fe,Mn)Ox thermal decomposition
products in CO2 hydrogenation. [Fe(urea-O)6](MnO4)3 contains O-coordinated urea ligands in octahedral
propeller-like arrangement around the Fe3+ cation. There
are extended hydrogen bond interactions between the permanganate ions
and the hydrogen atoms of the urea ligands. These hydrogen bonds serve
as reaction centers and have unique roles in the solid-phase quasi-intramolecular
redox reaction of the urea ligand and the permanganate anion below
the temperature of ligand loss of the complex cation. The decomposition
mechanism of the urea ligand (ammonia elimination with the formation
of isocyanuric acid and biuret) has been clarified. In an inert atmosphere,
the final thermal decomposition product was manganese-containing wuestite,
(Fe,Mn)O, at 800 °C, whereas in ambient air, two types of bixbyite
(Fe,Mn)2O3 as well as jacobsite (Fe,Mn)T-4(Fe,Mn)OC-62O4), with overall Fe to Mn stoichiometry of 1:3, were formed. These
final products were obtained regardless of the different atmospheres
applied during thermal treatments up to 350 °C. Disordered bixbyite
formed first with inhomogeneous Fe and Mn distribution and double-size
supercell and then transformed gradually into common bixbyite with
regular structure (and with 1:3 Fe to Mn ratio) upon increasing the
temperature and heating time. The (Fe,Mn)Ox intermediates formed under various conditions showed catalytic effect
in the CO2 hydrogenation reaction with <57.6% CO2 conversions and <39.3% hydrocarbon yields. As a mild solid-phase
oxidant, hexakis(urea-O)iron(III) permanganate, was
found to be selective in the transformation of (un)substituted benzylic
alcohols into benzaldehydes and benzonitriles. [Fe(urea-O)6](MnO4)3 is a selective solid-phase oxidant
of benzylic alcohols
into benzaldehydes and precursor in the preparation of (Fe,Mn)Ox catalysts for CO2 hydrogenation
into hydrocarbons. The urea ligands are in octahedral propeller-like
arrangement around the Fe3+ cation, and there are hydrogen
bonds between the permanganate anions and the urea ligands. A solid-phase
quasi-intramolecular redox reaction of the urea and the permanganate
resulted in (Fe,Mn)O, (Fe,Mn)2O3, and (Fe,Mn)T-4(Fe,Mn)OC-62O4 with an overall Fe to Mn stoichiometry of 1:3.
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Affiliation(s)
- Kende Attila Béres
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok krt. 2, H-1117 Budapest, Hungary.,György Hevesy PhD School of Chemistry, Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, H-1117 Budapest, Hungary
| | - Zoltán Homonnay
- György Hevesy PhD School of Chemistry, Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, H-1117 Budapest, Hungary
| | - Libor Kvitek
- Faculty of Science, Department of Physical Chemistry, Palacky University Olomouc, 17. Listopadu 12, Olomouc 77146, Czech Republic
| | - Zsolt Dürvanger
- Structural Chemistry and Biology Laboratory, Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, H-1117 Budapest, Hungary
| | - Martina Kubikova
- Faculty of Science, Department of Physical Chemistry, Palacky University Olomouc, 17. Listopadu 12, Olomouc 77146, Czech Republic
| | - Veronika Harmat
- Structural Chemistry and Biology Laboratory, Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, H-1117 Budapest, Hungary.,ELKH-ELTE Protein eModelling Research Group, Pázmány Péter s. 1/A, H-1117 Budapest, Hungary
| | - Fanni Szilágyi
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok krt. 2, H-1117 Budapest, Hungary.,Bay Zoltan Ltd. for Applied Research, Production Division (BAY-PROD), 1 Kondorfa, H-1116 Budapest, Hungary
| | - Zsuzsanna Czégény
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok krt. 2, H-1117 Budapest, Hungary
| | - Péter Németh
- Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, ELKH, Budaörsi street 45, H-1112 Budapest, Hungary
| | - Laura Bereczki
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok krt. 2, H-1117 Budapest, Hungary
| | - Vladimir M Petruševski
- Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje MK-1000, North Macedonia
| | - Mátyás Pápai
- Wigner Research Centre for Physics, H-1525 Budapest, P.O. Box 49, Hungary
| | - Attila Farkas
- Department of Organic Chemistry, Budapest University of Technology and Economics, Műegyetem rakpart 3, H-1111 Budapest, Hungary
| | - László Kótai
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok krt. 2, H-1117 Budapest, Hungary.,Deuton-X Ltd., Selmeci u. 89, H-2030, Érd, Hungary
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Multi-Centered Solid-Phase Quasi-Intramolecular Redox Reactions of [(Chlorido)Pentaamminecobalt(III)] Permanganate—An Easy Route to Prepare Phase Pure CoMn2O4 Spinel. INORGANICS 2022. [DOI: 10.3390/inorganics10020018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We synthesized and structurally characterized the previously unknown [Co(NH3)5Cl](MnO4)2 complex as the precursor of CoMn2O4. The complex was also deuterated, and its FT-IR, far-IR, low-temperature Raman and UV-VIS spectra were measured as well. The structure of the complex was solved by single-crystal X-ray diffraction and the 3D-hydrogen bonds were evaluated. The N-H…O-Mn hydrogen bonds act as redox centers to initiate a solid-phase quasi-intramolecular redox reaction even at 120 °C involving the Co(III) centers. The product is an amorphous material, which transforms into [Co(NH3)5Cl]Cl2, NH4NO3, and a todorokite-like solid Co-Mn oxide on treatment with water. The insoluble residue may contain {Mn4IIIMnIV2O12}n4n-, {Mn5IIIMnIVO12}n5n- or {MnIII6O12}n6n- frameworks, which can embed 2 × n (CoII and/or CoIII) cations in their tunnels, respectively, and 4 × n ammonia ligands are coordinated to the cobalt cations. The decomposition intermediates decompose on further heating via a series of redox reactions, forming a solid CoIIMIII2O4 spinel with an average size of 16.8 nm, and gaseous N2, N2O and Cl2. The CoMn2O4 prepared in this reaction has photocatalytic activity in Congo red degradation with UV light. Its activity strongly depends on the synthesis conditions, e.g., Congo red was degraded 9 and 13 times faster in the presence of CoMn2O4 prepared at 550 °C (in air) or 420 °C (under N2), respectively.
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Sreenivasulu N, Kumar UN, Madhav KMVV, Thomas T, Bhattacharya SS. Structural and Electrochemical Investigations on Nanocrystalline High Entropy Spinel Oxides for Battery‐Like Supercapacitor Applications. ChemistrySelect 2022. [DOI: 10.1002/slct.202104015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- N. Sreenivasulu
- Nano Functional Materials Technology Centre (NFMTC) Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai Tamil Nadu 600036 India
| | - U. Naveen Kumar
- Applied Nanostructures Engineering and Nanochemistry ANEN) Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai Tamil Nadu 600036 India
| | | | - Tiju Thomas
- Applied Nanostructures Engineering and Nanochemistry ANEN) Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai Tamil Nadu 600036 India
| | - S. S. Bhattacharya
- Nano Functional Materials Technology Centre (NFMTC) Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai Tamil Nadu 600036 India
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11
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Béres KA, Sajó IE, Lendvay G, Trif L, Petruševski VM, Barta-Holló B, Korecz L, Franguelli FP, László K, Szilágyi IM, Kótai L. Solid-Phase "Self-Hydrolysis" of [Zn(NH 3) 4MoO 4@2H 2O] Involving Enclathrated Water-An Easy Route to a Layered Basic Ammonium Zinc Molybdate Coordination Polymer. Molecules 2021; 26:4022. [PMID: 34209392 PMCID: PMC8272139 DOI: 10.3390/molecules26134022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/16/2022] Open
Abstract
An aerial humidity-induced solid-phase hydrolytic transformation of the [Zn(NH3)4]MoO4@2H2O (compound 1@2H2O) with the formation of [(NH4)xH(1-x)Zn(OH)(MoO4)]n (x = 0.92-0.94) coordination polymer (formally NH4Zn(OH)MoO4, compound 2) is described. Based on the isostructural relationship, the powder XRD indicates that the crystal lattice of compound 1@2H2O contains a hydrogen-bonded network of tetraamminezinc (2+) and molybdate (2-) ions, and there are cavities (O4N4(μ-H12) cube) occupied by the two water molecules, which stabilize the crystal structure. Several observations indicate that the water molecules have no fixed positions in the lattice voids; instead, the cavity provides a neighborhood similar to those in clathrates. The @ symbol in the notation is intended to emphasize that the H2O in this compound is enclathrated rather than being water of crystallization. Yet, signs of temperature-dependent dynamic interactions with the wall of the cages can be detected, and 1@2H2O easily releases its water content even on standing and yields compound 2. Surprisingly, hydrolysis products of 1 were observed even in the absence of aerial humidity, which suggests a unique solid-phase quasi-intramolecular hydrolysis. A mechanism involving successive substitution of the ammonia ligands by water molecules and ammonia release is proposed. An ESR study of the Cu-doped compound 2 (2#dotCu) showed that this complex consists of two different Cu2+(Zn2+) environments in the polymeric structure. Thermal decomposition of compounds 1 and 2 results in ZnMoO4 with similar specific surface area and morphology. The ZnMoO4 samples prepared from compounds 1 and 2 and compound 2 in itself are active photocatalysts in the degradation of Congo Red dye. IR, Raman, and UV studies on compounds 1@2H2O and 2 are discussed in detail.
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Affiliation(s)
- Kende Attila Béres
- Research Centre for Natural Sciences, Magyar Tudósok Krt 2, 1117 Budapest, Hungary; (K.A.B.); (G.L.); (L.T.); (L.K.); (F.P.F.)
| | - István E. Sajó
- Szentagothai Research Centre, Environmental Analytical and Geoanalytical Research Group, University of Pécs, Ifjúság Útja 20, 7624 Pécs, Hungary;
| | - György Lendvay
- Research Centre for Natural Sciences, Magyar Tudósok Krt 2, 1117 Budapest, Hungary; (K.A.B.); (G.L.); (L.T.); (L.K.); (F.P.F.)
| | - László Trif
- Research Centre for Natural Sciences, Magyar Tudósok Krt 2, 1117 Budapest, Hungary; (K.A.B.); (G.L.); (L.T.); (L.K.); (F.P.F.)
| | - Vladimir M. Petruševski
- Faculty of Natural Sciences and Mathematics, Ss. Cyryl and Methodius University, 1000 Skopje, North Macedonia;
| | - Berta Barta-Holló
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000 Novi Sad, Serbia;
| | - László Korecz
- Research Centre for Natural Sciences, Magyar Tudósok Krt 2, 1117 Budapest, Hungary; (K.A.B.); (G.L.); (L.T.); (L.K.); (F.P.F.)
| | - Fernanda Paiva Franguelli
- Research Centre for Natural Sciences, Magyar Tudósok Krt 2, 1117 Budapest, Hungary; (K.A.B.); (G.L.); (L.T.); (L.K.); (F.P.F.)
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem Rakpart 3, 1111 Budapest, Hungary;
| | - Krisztina László
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem Rakpart 3, 1111 Budapest, Hungary;
| | - Imre Miklós Szilágyi
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem Rakpart 3, 1111 Budapest, Hungary;
| | - László Kótai
- Research Centre for Natural Sciences, Magyar Tudósok Krt 2, 1117 Budapest, Hungary; (K.A.B.); (G.L.); (L.T.); (L.K.); (F.P.F.)
- Deuton-X Ltd., Selmeci u. 89, 2030 Érd, Hungary
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A Quasi-Intramolecular Solid-Phase Redox Reaction of Ammonia Ligands and Perchlorate Anion in Diamminesilver(I) Perchlorate. INORGANICS 2021. [DOI: 10.3390/inorganics9050038] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The reaction of ammoniacal AgNO3 solution (or aq. solution of [Ag(NH3)2]NO3) with aq. NaClO4 resulted in [Ag(NH3)2]ClO4 (compound 1). Detailed spectroscopic (correlation analysis, IR, Raman, and UV) analyses were performed on [Ag(NH3)2]ClO4. The temperature and enthalpy of phase change for compound 1 were determined to be 225.7 K and 103.04 kJ/mol, respectively. We found the thermal decomposition of [Ag(NH3)2]ClO4 involves a solid-phase quasi-intramolecular redox reaction between the perchlorate anion and ammonia ligand, resulting in lower valence chlorine oxyacid (chlorite, chlorate) components. We did not detect thermal ammonia loss during the formation of AgClO4. However, a redox reaction between the ammonia and perchlorate ion resulted in intermediates containing chlorate/chlorite, which disproportionated (either in the solid phase or in aqueous solutions after the dissolution of these decomposition intermediates in water) into AgCl and silver perchlorate. We propose that the solid phase AgCl-AgClO4 mixture eutectically melts, and the resulting AgClO4 decomposes in this melt into AgCl and O2. Thus, the final product of decomposition is AgCl, N2, and H2O. The intermediate (chlorite, chlorate) phases were identified by IR, XPS, and titrimetric methods.
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Béres KA, Petruševski V, Holló BB, Németh P, Fogaça L, Paiva Franguelli F, Farkas A, Menyhárd A, Szilágyi IM, Kótai L. AgNO
3
⋅NH
4
NO
3
– an enigmatic double‐salt type “decomposition intermediate” of diamminesilver(I) permanganate. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kende Attila Béres
- Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences, ELKH Magyar tudósok krt. 2 1117 Budapest Hungary
| | - Vladimir Petruševski
- Faculty of Natural Sciences and Mathematics Ss. Cyryl and Methodius University Skopje Macedonia
| | - Berta Barta Holló
- Department of Chemistry Biochemistry and Environmental Protection Faculty of Sciences University of Novi Sad Trg Dositeja Obradovića 3 21000 Novi Sad Serbia
| | - Péter Németh
- Institute for Geological and Geochemical Research Research Centre for Natural Sciences ELKH, Budaörsi street 45 1112 Budapest Hungary
- Research Institute of Biomolecular and Chemical Engineering University of Pannonia Egyetem út 10 8200 Veszprém Hungary
| | - Lara Fogaça
- Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences, ELKH Magyar tudósok krt. 2 1117 Budapest Hungary
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Műegyetem rakpart 3 1111 Budapest Hungary
| | - Fernanda Paiva Franguelli
- Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences, ELKH Magyar tudósok krt. 2 1117 Budapest Hungary
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Műegyetem rakpart 3 1111 Budapest Hungary
| | - Attila Farkas
- Department of Organic Chemistry Budapest University of Technology and Economics Műegyetem rakpart 3 1111 Budapest Hungary
| | - Alfréd Menyhárd
- Department of Physical Chemistry and Materials Science Budapest University of Technology and Economics Műegyetem rakpart 3 1111 Budapest Hungary
| | - Imre Miklós Szilágyi
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Műegyetem rakpart 3 1111 Budapest Hungary
| | - László Kótai
- Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences, ELKH Magyar tudósok krt. 2 1117 Budapest Hungary
- Deuton-X Ltd. Selmeci. U. 89 H-2030 Érd Hungary
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