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Ravi A, Mulkapuri S, Das SK. Hydroxylated Polyoxometalate with Cu(II)- and Cu(I)-Aqua Complexes: A Bifunctional Catalyst for Electrocatalytic Water Splitting at Neutral pH. Inorg Chem 2023; 62:12650-12663. [PMID: 37233196 DOI: 10.1021/acs.inorgchem.3c00423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A sole inorganic framework material [Li(H2O)4][{CuI(H2O)1.5} {CuII(H2O)3}2{WVI12O36(OH)6}]·N2·H2S·3H2O (1) consisting of a hydroxylated polyoxometalate (POM) anion, {WVI12O36(OH)6}6-, a mixed-valent Cu(II)- and Cu(I)-aqua cationic complex species, [{CuI(H2O)1.5}{CuII(H2O)3}2]5+, a Li(I)-aqua complex cation, and three solvent molecules, has been synthesized and structurally characterized. During its synthesis, the POM cluster anion gets functionalized with six hydroxyl groups, i.e., six WVI-OH groups per cluster unit. Moreover, structural and spectral analyses have shown the presence of H2S and N2 molecules in the concerned crystal lattice, formed from "sulfate-reducing ammonium oxidation (SRAO)". Compound 1 functions as a bifunctional electrocatalyst exhibiting oxygen evolution reaction (OER) by water oxidation and hydrogen evolution reaction (HER) by water reduction at the neutral pH. We could identify that the hydroxylated POM anion and copper-aqua complex cations are the functional sites for HER and OER, respectively. The overpotential, required to achieve a current density of 1 mA/cm2 in the case of HER (water reduction), is found to be 443 mV with a Faradaic efficiency of 84% and a turnover frequency of 4.66 s-1. In the case of OER (water oxidation), the overpotential needed to achieve a current density of 1 mA/cm2 is obtained to be 418 mV with a Faradaic efficiency of 80% and turnover frequency of 2.81 s-1. Diverse electrochemical controlled experiments have been performed to conclude that the title POM-based material functions as a true bifunctional catalyst for electrocatalytic HER as well as OER at the neutral pH without catalyst reconstruction.
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Affiliation(s)
- Athira Ravi
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
| | - Sateesh Mulkapuri
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
| | - Samar K Das
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
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Duvanova E, Krasnou I, Krumme A, Mikli V, Radio S, Rozantsev GM, Karpichev Y. Development of Functional Composite Cu(II)-Polyoxometalate/PLA with Antimicrobial Properties. Molecules 2022; 27:molecules27082510. [PMID: 35458709 PMCID: PMC9025916 DOI: 10.3390/molecules27082510] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/02/2022] [Accepted: 04/08/2022] [Indexed: 12/04/2022] Open
Abstract
Novel composite self-disinfecting films of polylactic acid (PLA) filled with nanosized particles of double sodium–copper(II) paratungstate B Na2Cu3(CuOH)2[W12O40(OH)2]·32H2O (POM) were developed. The solvent casting (POM/PLA film) and solvent-free melt extrusion methods (Extr. POM/PLA film) were applied for film preparation. The copper (II) ion release to water from both types of the films after 10 days at different temperatures demonstrated that the PLA matrix acts as a diffusion barrier, and the resulting concentration of released copper in water at room temperature remained low, at 0.79% for POM/PLA film and 0.51% for Extr. POM/PLA film. The POM-containing films reveals a significant inhibitory effect against E. coli ATCC 25922 in the agar diffusion test. The numbers of CFUs in washes of the films after incubation for 24 h were found to be 3.6 log CFU mL–1 (POM/PLA film) and 4.1 log CFU mL–1 (Extr. POM/PLA film). The films combine the antibacterial properties of POM and a bio-based polymer matrix, which makes them a prospective coating material for applications in hospital indoor environments. Excellent thermal stability of POM gives a technological advantage for industrial manufacturing to allow the processing of novel composite material in the solvent free (molten) state.
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Affiliation(s)
- Ella Duvanova
- Department of Chemistry and Biotechnology, Tallinn University of Technology (TalTech), 12618 Tallinn, Estonia;
- Research Laboratory “Chemistry of Polyoxometalates and Complex Oxide Systems”, Vasyl’ Stus Donetsk National University, 21027 Vinnytsia, Ukraine; (S.R.); (G.M.R.)
| | - Illia Krasnou
- Department of Materials and Environmental Technology, Tallinn University of Technology (TalTech), 19086 Tallinn, Estonia; (I.K.); (A.K.); (V.M.)
| | - Andres Krumme
- Department of Materials and Environmental Technology, Tallinn University of Technology (TalTech), 19086 Tallinn, Estonia; (I.K.); (A.K.); (V.M.)
| | - Valdek Mikli
- Department of Materials and Environmental Technology, Tallinn University of Technology (TalTech), 19086 Tallinn, Estonia; (I.K.); (A.K.); (V.M.)
| | - Serhii Radio
- Research Laboratory “Chemistry of Polyoxometalates and Complex Oxide Systems”, Vasyl’ Stus Donetsk National University, 21027 Vinnytsia, Ukraine; (S.R.); (G.M.R.)
| | - Georgiy M. Rozantsev
- Research Laboratory “Chemistry of Polyoxometalates and Complex Oxide Systems”, Vasyl’ Stus Donetsk National University, 21027 Vinnytsia, Ukraine; (S.R.); (G.M.R.)
| | - Yevgen Karpichev
- Department of Chemistry and Biotechnology, Tallinn University of Technology (TalTech), 12618 Tallinn, Estonia;
- Correspondence:
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Srinivasan BR, Kundaikar SA, Morajkar SM, Näther C, Bensch W. Synthesis, crystal structure and properties of hepta(ammonium) penta(1H-imidazol-3-ium) paratungstate B tetrahydrate. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1965996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | | | | | - Christian Näther
- Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Kiel, Germany
| | - Wolfgang Bensch
- Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Kiel, Germany
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Gumerova NI, Dobrov A, Roller A, Rompel A. Iron(II) and copper(II) paratungstates B: a single-crystal X-ray diffraction study. Acta Crystallogr C Struct Chem 2018; 74:1252-1259. [PMID: 30398176 PMCID: PMC6218883 DOI: 10.1107/s2053229618010021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/11/2018] [Indexed: 11/22/2022] Open
Abstract
Paratungstate B is a common isopolytungstate (IPOT) built of the [W12O40(OH)2]10- anion and exhibits a cluster-like construction of 12 W-centred distorted octahedra. Due to a high surface charge density, the paratungstate anion acts as a multidentate ligand forming high-dimensional extended structures, which exhibit unique catalytic and magnetic properties. Two new paradodecatungstate B compounds decorated by iron(II) or copper(II), namely Na5Fe2.5[W12O40(OH)2]·36H2O (Na5Fe2.5paraB) and Na4Cu3[W12O40(OH)2]·28H2O (Na4Cu3paraB), have been synthesized by a convenient aqueous solution method, and structurally characterized by single-crystal and powder X-ray diffraction, IR spectroscopy, elemental analysis and thermogravimetric analysis. Both compounds crystallize in the triclinic P-1 space group. In both compounds, the [W12O40(OH)2]10- polyanion acts as a multidentate ligand that links transition-metal and sodium cations, forming a three-dimensional framework.
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Affiliation(s)
- Nadiia I. Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Anatolie Dobrov
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Alexander Roller
- Universität Wien, Fakultät für Chemie, Zentrum für Röntgenstrukturanalyse, Währinger Strasse 42, Wien 1090, Austria
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
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von Allmen KD, Grundmann H, Linden A, Patzke GR. Synthesis and Characterization of 0D–3D Copper-Containing Tungstobismuthates Obtained from the Lacunary Precursor Na9[B-α-BiW9O33]. Inorg Chem 2016; 56:327-335. [DOI: 10.1021/acs.inorgchem.6b02217] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kim D. von Allmen
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Henrik Grundmann
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Anthony Linden
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Greta R. Patzke
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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Poimanova OY, Radio SV, Bilousova KY, Khaustov DV, Baumer VN, Rozantsev GM. Phase formation in the system Co2+–WO42−–H+–C3H7ON–H2O. Synthesis, crystal structure, and characterization of cobalt(II) decatungstate [Co(C3H7NO)5]2[W10O32]. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1090563] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Olena Yu. Poimanova
- Faculty of Chemistry, Department of Inorganic Chemistry, Donetsk National University, Donetsk, Ukraine
| | - Sergii V. Radio
- Faculty of Chemistry, Department of Inorganic Chemistry, Donetsk National University, Donetsk, Ukraine
- Faculty of Chemistry, Department of Inorganic Chemistry, Donetsk National University, Vinnytsia, Ukraine
| | - Katerina Ye. Bilousova
- Faculty of Chemistry, Department of Inorganic Chemistry, Donetsk National University, Donetsk, Ukraine
| | - Danil V. Khaustov
- Faculty of Chemistry, Department of Inorganic Chemistry, Donetsk National University, Donetsk, Ukraine
| | - Vyacheslav N. Baumer
- State Scientific Institution “Institute for Single Crystals” of NAS of Ukraine, Kharkov, Ukraine
- Faculty of Chemistry, Department of Inorganic Chemistry, V.N. Karazin National University, Kharkiv, Ukraine
| | - Georgiy M. Rozantsev
- Faculty of Chemistry, Department of Inorganic Chemistry, Donetsk National University, Donetsk, Ukraine
- Faculty of Chemistry, Department of Inorganic Chemistry, Donetsk National University, Vinnytsia, Ukraine
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Wu L, Yang W, Dong X, Yu C, Liu B, Yan Y, Hu H, Xue G. A pure inorganic 2-D framework based on paradodecatungstate and Mn 2+ ions: syntheses, structure, and properties. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1046851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Lizhou Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Department of Chemistry, Northwest University, Xi’an, PR China
- Department of Chemistry and Chemical Engineering, Ankang University, Ankang, PR China
| | - Wen Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Department of Chemistry, Northwest University, Xi’an, PR China
| | - Xinbo Dong
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Department of Chemistry, Northwest University, Xi’an, PR China
| | - Chengxing Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Department of Chemistry, Northwest University, Xi’an, PR China
| | - Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Department of Chemistry, Northwest University, Xi’an, PR China
| | - Yonghong Yan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Department of Chemistry, Northwest University, Xi’an, PR China
| | - Huaiming Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Department of Chemistry, Northwest University, Xi’an, PR China
| | - Ganglin Xue
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Department of Chemistry, Northwest University, Xi’an, PR China
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Radio SV, Melnik NA, Ivantsova ES, Baumer VN. Crystal structure of double sodium-copper(II) paratungstate B: Na2Cu3(CuOH)2[W12O40(OH)2]·32H2O. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476614050126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Cui K, Li F, Xu L, Wang Y, Sun Z, Fu H. A 3D all-inorganic architecture based on the [H2W12O42]10− building block with different alkaline-earth metal linkers: crystal structures, surface photovoltage and photoluminescent properties. CrystEngComm 2013. [DOI: 10.1039/c3ce40222c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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