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Song J, Jiang Y, Lu Y, Cao Y, Zhang Y, Fan L, Liu H, Gao G. A Forceful "Dendrite-Killer" of Polyoxomolybdate with Reusability Effectively Dominating Dendrite-Free Lithium Metal Anode. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301740. [PMID: 37312611 DOI: 10.1002/smll.202301740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/29/2023] [Indexed: 06/15/2023]
Abstract
In this work, a series of Mo-containing polyoxometalates (POMs) modified separators to inhibit the growth of lithium dendrites, and thus improving the lifespan and safety of the cells is proposed. When the deposited lithium forms dendrites and touches the separator, the optimized Dawson-type POM of (NH4 )6 [P2 Mo18 O62 ]·11H2 O (P2 Mo18 ) with the stronger oxidizability, acts like a "killer", is more inclined to oxidize Li0 into Li+ , thus weakening the lethality of lithium dendrites. The above process is accompanied by the formation of Lix [P2 Mo18 O62 ] (x = 6-10) in its reduced state. Converting to the stripping process, the reduced state Lix [P2 Mo18 O62 ] (x = 6-10) can be reoxidized to P2 Mo18 , which achieves the reusability of P2 Mo18 functional material. Meanwhile, lithium ions are released into the cell system to participate in the subsequent electrochemical cycles, thus the undesired lithium dendrites are converted into usable lithium ions to prevent the generation of "dead lithium". As a result, the Li//Li symmetrical cell with P2 Mo18 modified separator delivers exceptional cyclic stability for over 1000 h at 3 mA cm-2 and 5 mAh cm-2 , and the assembled Li-S full cell maintains superior reversible capacity of 600 mAh g-1 after 200 cycles at 2 C.
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Affiliation(s)
- Jian Song
- Collaborative Innovation Center of Metal Nanoclusters & Photo/Electro-Catalysis and Sensing, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
| | - Yuanyuan Jiang
- Collaborative Innovation Center of Metal Nanoclusters & Photo/Electro-Catalysis and Sensing, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
| | - Yizhong Lu
- Collaborative Innovation Center of Metal Nanoclusters & Photo/Electro-Catalysis and Sensing, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
| | - Yundong Cao
- Collaborative Innovation Center of Metal Nanoclusters & Photo/Electro-Catalysis and Sensing, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
| | - Yuxi Zhang
- Collaborative Innovation Center of Metal Nanoclusters & Photo/Electro-Catalysis and Sensing, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
| | - Linlin Fan
- Collaborative Innovation Center of Metal Nanoclusters & Photo/Electro-Catalysis and Sensing, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
| | - Hong Liu
- Collaborative Innovation Center of Metal Nanoclusters & Photo/Electro-Catalysis and Sensing, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
| | - Guanggang Gao
- Collaborative Innovation Center of Metal Nanoclusters & Photo/Electro-Catalysis and Sensing, School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China
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Heterostructure of polyoxometalate/zinc-iron-oxide nanoplates as an outstanding bifunctional electrocatalyst for the hydrogen and oxygen evolution reaction. J Colloid Interface Sci 2022; 618:419-430. [DOI: 10.1016/j.jcis.2022.03.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/17/2022] [Accepted: 03/23/2022] [Indexed: 11/18/2022]
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Hoseini AA, Farhadi S, Zabardasti A, Siadatnasab F. An organic-inorganic hybrid nanomaterial composed of a Dowson-type (NH 4) 6P 2Mo 18O 62 heteropolyanion and a metal-organic framework: synthesis, characterization, and application as an effective adsorbent for the removal of organic dyes. RSC Adv 2020; 10:40005-40018. [PMID: 35520823 PMCID: PMC9057490 DOI: 10.1039/d0ra07042d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 10/18/2020] [Indexed: 11/21/2022] Open
Abstract
In this work, an inorganic-organic hybrid nanomaterial, P2Mo18/MIL-101(Cr), based on Wells-Dawson-type (NH4)6P2Mo18O62 polyoxometalate (abbreviated as P2Mo18) and the MIL-101(Cr) metal-organic framework was fabricated by the reaction of (NH4)6P2Mo18O62, Cr(NO3)3·9H2O and terephthalic acid under hydrothermal conditions. The as-prepared recyclable nanohybrid was fully characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR) equipped with energy dispersive X-ray microanalysis (EDX), field emission scanning electron microscopy (FE-SEM), Raman spectroscopy and Brunauer-Emmett-Teller (BET) specific surface area studies. All the analyses confirmed the successful insertion of P2Mo18O62 6- heteropolyanion within the cavities of MIL-101(Cr). The encapsulated MIL-101(Cr) showed a considerable decrease in both pore volume and surface area compared with MIL-101(Cr) due to incorporation of the very large Dowson-type polyoxometalate into the three-dimensional porous MIL-101(Cr). The nanohybrid had a specific surface area of 800.42 m2 g-1. The adsorption efficiency of this nanohybrid for removal of methylene blue (MB), rhodamine B (RhB), and methyl orange (MO) from aqueous solutions was evaluated. Surprisingly, the composite not only presented a high adsorption capacity of 312.5 mg g-1 for MB, but also has the ability to rapidly remove 100% MB from a dye solution of 50 mg L-1 within 3 min. These results confirmed that this adsorbent is applicable in a wide pH range of 2-10. The nanohybrid showed rapid and selective adsorption for cationic MB and RhB dyes from MB/MO, MB/RhB, MO/RhB and MB/MO/RhB mixed dye solutions. The equilibrium adsorption data were better fitted by the Langmuir isotherm. Kinetics data indicate that the adsorption of the dye follows a pseudo-second order kinetics model. Also, this material could be effortlessly separated and recycled without any structural modification. Accordingly, it is an efficient adsorbent for removing cationic dyes.
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Affiliation(s)
- Akram-Alsadat Hoseini
- Department of Chemistry, Lorestan University Khorramabad 68151-433 Iran +98 66 33120618 +98 66 33120611
| | - Saeed Farhadi
- Department of Chemistry, Lorestan University Khorramabad 68151-433 Iran +98 66 33120618 +98 66 33120611
| | - Abedin Zabardasti
- Department of Chemistry, Lorestan University Khorramabad 68151-433 Iran +98 66 33120618 +98 66 33120611
| | - Firouzeh Siadatnasab
- Department of Chemistry, Lorestan University Khorramabad 68151-433 Iran +98 66 33120618 +98 66 33120611
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Choi JH, Kang TH, Bang Y, Lee JK, Song JC, Song IK. Effect of metal-substitution on the redox behaviors of mono-transition metal-substituted Wells–Dawson tungstoarsenates. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.02.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Raj G, Swalus C, Arendt E, Eloy P, Devillers M, Gaigneaux EM. Controlling the dispersion of supported polyoxometalate heterogeneous catalysts: impact of hybridization and the role of hydrophilicity-hydrophobicity balance and supramolecularity. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1749-59. [PMID: 25383286 PMCID: PMC4222433 DOI: 10.3762/bjnano.5.185] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 09/19/2014] [Indexed: 06/04/2023]
Abstract
The hybridization of polyoxometalates (POMs) through an organic-inorganic association offers several processing advantages in the design of heterogeneous catalysts. A clear understanding of the organization of these hybrid materials on solid surfaces is necessary to optimise their properties. Herein, we report for the first time the organization of Keggin phosphotungstic [PW12O40](3-) and Wells-Dawson (WD) phosphomolybdic [P2Mo18O62](6-) anions deposited on mica (hydrophilic), and highly oriented pyrolytic graphite (HOPG) (hydrophobic) surfaces. Next, the supramolecular organization of the organic-inorganic hybrid materials formed from the association of POM anions and dimethyldioctadecylammonium bromide (DODA) is investigated as a function of the hydrophilic or hydrophobic nature of the surfaces. The height of the Keggin-POM anions, measured with tapping mode (TM-AFM) is always in good agreement with the molecular dimension of symmetric Keggin-POM anions (ca. 1 nm). However, the asymmetric WD-POM anions form monolayer assemblies on the surfaces with the orientation of their long molecular axis (ca. 1.6 nm) depending on the hydrophilic or hydrophobic properties of the substrate. Namely, the long axis is parallel on mica, and perpendicular on HOPG. When hybridized with DODA, the organization of the hybrid material is dictated by the interaction of the alkyl side chains of DODA with the substrate surface. On HOPG, the DODA-POM hybrid forms small domains of epitaxially arranged straight nanorod structures with their orientation parallel to each other. Conversely, randomly distributed nanospheres are formed when the hybrid material is deposited on freshly cleaved mica. Finally, a UV-ozone treatment of the hybrid material allows one to obtain highly dispersed isolated POM entities on both hydrophilic and hydrophobic surfaces. The hybridization strategy to prevent the clustering of POMs on various supports would enable to develop highly dispersed POM-based heterogeneous catalysts with enhanced functionalities.
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Affiliation(s)
- Gijo Raj
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
- CEA Grenoble, INAC, UMR 5819 SPRAM (CEA/CNRS/UJF-Grenoble 1), Laboratoire d’Electronique Moléculaire, Organique et Hybride, 17 rue des Martyrs, 38054 Grenoble cedex 9, France
| | - Colas Swalus
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
| | - Eglantine Arendt
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
| | - Pierre Eloy
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
| | - Michel Devillers
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
| | - Eric M Gaigneaux
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
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