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Marx C, Endriss J, Klopfer M, Reichel W, Strakos C, Weihrich R. Half antiperovskites VII – DFT modelling of shandites that are isoelectronic to Co
3
Sn
2
S
2. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202100195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Clara Marx
- Institute for Materials Resource Management University of Augsburg Am Technologiezentrum 8 D-86159 Augsburg Germany
| | - Jan Endriss
- Institute for Materials Resource Management University of Augsburg Am Technologiezentrum 8 D-86159 Augsburg Germany
| | - Maxi Klopfer
- Institute for Materials Resource Management University of Augsburg Am Technologiezentrum 8 D-86159 Augsburg Germany
| | - Werner Reichel
- Institute for Materials Resource Management University of Augsburg Am Technologiezentrum 8 D-86159 Augsburg Germany
| | - Christian Strakos
- Institute for Materials Resource Management University of Augsburg Am Technologiezentrum 8 D-86159 Augsburg Germany
| | - Richard Weihrich
- Institute for Materials Resource Management University of Augsburg Am Technologiezentrum 8 D-86159 Augsburg Germany
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2
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Tang L, Gou S, He Y, Liu L, Fang S, Duan W, Liu T. An efficient chitosan-based adsorption material containing phosphoric acid and amidoxime groups for the enrichment of Cu(II) and Ni(II) from water. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115815] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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3
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Mangelis P, Vaqueiro P, Powell AV. Improved Thermoelectric Performance through Double Substitution in Shandite-Type Mixed-Metal Sulfides. ACS APPLIED ENERGY MATERIALS 2020; 3:2168-2174. [PMID: 32226925 PMCID: PMC7093842 DOI: 10.1021/acsaem.9b02272] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Substitution of tin by indium in shandite-type phases, A3Sn2S2 with mixed Co/Fe occupancy of the A-sites is used to tune the Fermi level within a region of the density of states in which there are sharp, narrow bands of predominantly metal d-character. Materials of general formula Co2.5+x Fe0.5-x Sn2--yIn y S2 (x = 0, 0.167; 0.0 ≤ y ≤ 0.7) have been prepared by solid-state reaction and the products characterized by powder X-ray diffraction. Electrical-transport property data reveal that the progressive depopulation of the upper conduction band as tin is replaced by indium increases the electrical resistivity, and the weakly temperature-dependent ρ(T) becomes more semiconducting in character. Concomitant changes in the negative Seebeck coefficient, the temperature dependence of which becomes increasingly linear, suggests the more highly substituted materials are n-type degenerate semiconductors. The power factors of the substituted phases, while increased, exhibit a weak temperature dependence. The observed reductions in thermal conductivity are principally due to reductions in the charge-carrier contribution on hole doping. A maximum figure-of-merit of (ZT)max = 0.29 is obtained for the composition Co2.667Fe0.333Sn1.6In0.4S2 at 573 K: among the highest values for an n-type sulfide at this temperature.
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Thakur G, Vir P, Guin SN, Shekhar C, Weihrich R, Sun Y, Kumar N, Felser C. Intrinsic Anomalous Hall Effect in Ni-Substituted Magnetic Weyl Semimetal Co 3Sn 2S 2. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2020; 32:1612-1617. [PMID: 32116410 PMCID: PMC7045698 DOI: 10.1021/acs.chemmater.9b05009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/22/2020] [Indexed: 05/30/2023]
Abstract
Topological Weyl semimetals have recently attracted considerable attention among materials scientists as their properties are predicted to be protected against perturbations such as lattice distortion and chemical substitution. However, any experimental proof of such robustness is still lacking. In this study, we experimentally demonstrate that the topological properties of the ferromagnetic kagomé compound Co3Sn2S2 are preserved upon Ni substitution. We systematically vary the Ni content in Co3Sn2S2 single crystals and study their magnetic and anomalous transport properties. For the intermediate Ni substitution, we observe a remarkable increase in the coercive field while still maintaining significant anomalous Hall conductivity. The large anomalous Hall conductivity of these compounds is intrinsic, consistent with first-principles calculations, which proves its topological origin. Our results can guide further studies on the chemical tuning of topological materials for better understanding.
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Affiliation(s)
- Gohil
S. Thakur
- Max-Planck-Institute
für Chemische Physik Fester Stoffe, 01187 Dresden, Germany
| | - Praveen Vir
- Max-Planck-Institute
für Chemische Physik Fester Stoffe, 01187 Dresden, Germany
| | - Satya N. Guin
- Max-Planck-Institute
für Chemische Physik Fester Stoffe, 01187 Dresden, Germany
| | - Chandra Shekhar
- Max-Planck-Institute
für Chemische Physik Fester Stoffe, 01187 Dresden, Germany
| | - Richard Weihrich
- Universität
Augsburg, IMRM, Universitätsstraße
2, 86135 Augsburg, Germany
| | - Yan Sun
- Max-Planck-Institute
für Chemische Physik Fester Stoffe, 01187 Dresden, Germany
| | - Nitesh Kumar
- Max-Planck-Institute
für Chemische Physik Fester Stoffe, 01187 Dresden, Germany
| | - Claudia Felser
- Max-Planck-Institute
für Chemische Physik Fester Stoffe, 01187 Dresden, Germany
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Li G, Xu Q, Shi W, Fu C, Jiao L, Kamminga ME, Yu M, Tüysüz H, Kumar N, Süß V, Saha R, Srivastava AK, Wirth S, Auffermann G, Gooth J, Parkin S, Sun Y, Liu E, Felser C. Surface states in bulk single crystal of topological semimetal Co 3Sn 2S 2 toward water oxidation. SCIENCE ADVANCES 2019; 5:eaaw9867. [PMID: 31453332 PMCID: PMC6697436 DOI: 10.1126/sciadv.aaw9867] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 07/10/2019] [Indexed: 05/19/2023]
Abstract
The band inversion in topological phase matters bring exotic physical properties such as the topologically protected surface states (TSS). They strongly influence the surface electronic structures of the materials and could serve as a good platform to gain insight into the surface reactions. Here we synthesized high-quality bulk single crystals of Co3Sn2S2 that naturally hosts the band structure of a topological semimetal. This guarantees the existence of robust TSS from the Co atoms. Co3Sn2S2 crystals expose their Kagome lattice that constructed by Co atoms and have high electrical conductivity. They serves as catalytic centers for oxygen evolution process (OER), making bonding and electron transfer more efficient due to the partially filled orbital. The bulk single crystal exhibits outstanding OER catalytic performance, although the surface area is much smaller than that of Co-based nanostructured catalysts. Our findings emphasize the importance of tailoring TSS for the rational design of high-activity electrocatalysts.
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Affiliation(s)
- Guowei Li
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
- Corresponding author. (G.L.); (Y.S.); (E.L.); (C.F.)
| | - Qiunan Xu
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Wujun Shi
- School of Physical Science and Technology, ShanghaiTech University, 201203 Shanghai, China
| | - Chenguang Fu
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Lin Jiao
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Machteld E. Kamminga
- Zernike Institute for Advanced Materials, University of Groningen, 9747 AG, Groningen, Netherlands
| | - Mingquan Yu
- Max Planck Institute for Coal Research, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Harun Tüysüz
- Max Planck Institute for Coal Research, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Nitesh Kumar
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Vicky Süß
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Rana Saha
- Max Planck Institute for Microstructure Physics, 06120 Halle, Germany
| | | | - Steffen Wirth
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Gudrun Auffermann
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Johannes Gooth
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
| | - Stuart Parkin
- Max Planck Institute for Microstructure Physics, 06120 Halle, Germany
| | - Yan Sun
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
- Corresponding author. (G.L.); (Y.S.); (E.L.); (C.F.)
| | - Enke Liu
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- Corresponding author. (G.L.); (Y.S.); (E.L.); (C.F.)
| | - Claudia Felser
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
- Corresponding author. (G.L.); (Y.S.); (E.L.); (C.F.)
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Weihrich R, Pöttgen R, Pielnhofer F. From Laboratory Press to Spins with Giant Effects. Angew Chem Int Ed Engl 2018; 57:15642-15644. [PMID: 30378228 DOI: 10.1002/anie.201811456] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Indexed: 11/11/2022]
Abstract
Parallelly aligned spins in Co-Kagome nets have provided several reasons for researchers to celebrate: Liu et al. and Wang et al. have reported discoveries of unique combinations of properties: Sn2 Co3 S2 =Co3 Sn2 S2 =SnCo3/2 S exhibits giant anomalous Hall effects that exceed those of known materials by orders of magnitude. For this laboratory curiosity, a specific electronic topology has been discovered in the predicted half-metal ferromagnetic S= 1 / 2 state that makes it a fascinating example of the novel group of magnetic Weyl semimetals. We present a chemical view on this compound that was little understood for a long time, but that is now also studied with respect to skyrmion lattices and thermoelectrics.
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Affiliation(s)
- Richard Weihrich
- Universität Augsburg, Institut für Materials Ressource Management, Universitätsstraße 2, 86135, Augsburg, Germany
| | - Rainer Pöttgen
- WWU Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149, Münster, Germany
| | - Florian Pielnhofer
- Universität Regensburg, Institut für Anorganische Chemie, Universitätsstraße 31, 93053, Regensburg, Germany
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Weihrich R, Pöttgen R, Pielnhofer F. Von der Laborpresse zu Spins mit riesigen Effekten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811456] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Richard Weihrich
- Universität Augsburg; Institut für Materials Ressource Management; Universitätsstraße 2 86135 Augsburg Deutschland
| | - Rainer Pöttgen
- WWU Münster; Institut für Anorganische und Analytische Chemie; Corrensstraße 30 48149 Münster Deutschland
| | - Florian Pielnhofer
- Universität Regensburg; Institut für Anorganische Chemie; Universitätsstraße 31 93053 Regensburg Deutschland
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Mangelis P, Vaqueiro P, Jumas JC, da Silva I, Smith RI, Powell AV. The effect of electron and hole doping on the thermoelectric properties of shandite-type Co 3 Sn 2 S 2. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.04.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Yang Z, Qian K, Lv J, Yan W, Liu J, Ai J, Zhang Y, Guo T, Zhou X, Xu S, Guo Z. Encapsulation of Fe3O4 Nanoparticles into N, S co-Doped Graphene Sheets with Greatly Enhanced Electrochemical Performance. Sci Rep 2016; 6:27957. [PMID: 27296103 PMCID: PMC4906393 DOI: 10.1038/srep27957] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 05/27/2016] [Indexed: 11/21/2022] Open
Abstract
Particular N, S co-doped graphene/Fe3O4 hybrids have been successfully synthesized by the combination of a simple hydrothermal process and a subsequent carbonization heat treatment. The nanostructures exhibit a unique composite architecture, with uniformly dispersed Fe3O4 nanoparticles and N, S co-doped graphene encapsulant. The particular porous characteristics with many meso/micro holes/pores, the highly conductive N, S co-doped graphene, as well as the encapsulating N, S co-doped graphene with the high-level nitrogen and sulfur doping, lead to excellent electrochemical performance of the electrode. The N-S-G/Fe3O4 composite electrode exhibits a high initial reversible capacity of 1362.2 mAhg−1, a high reversible specific capacity of 1055.20 mAhg−1 after 100 cycles, and excellent cycling stability and rate capability, with specific capacity of 556.69 mAhg−1 when cycled at the current density of 1000 mAg−1, indicating that the N-S-G/Fe3O4 composite is a promising anode candidate for Li-ion batteries.
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Affiliation(s)
- Zunxian Yang
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Kun Qian
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Jun Lv
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Wenhuan Yan
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Jiahui Liu
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Jingwei Ai
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Yuxiang Zhang
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Tailiang Guo
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Xiongtu Zhou
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Sheng Xu
- National &Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, P. R. China
| | - Zaiping Guo
- Institute for Superconducting &Electronic Materials, University of Wollongong, NSW 2522, Australia.,School of Mechanical, Materials &Mechatronics Engineering, University of Wollongong, NSW 2522, Australia
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Rommel SM, Krach A, Peter P, Weihrich R. Conversion Reactions of Solids: From a Surprising Three-Step Mechanism towards Directed Product Formation. Chemistry 2016; 22:6333-9. [DOI: 10.1002/chem.201505209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Stefan Michael Rommel
- Institute for Materials Resource Management; University of Augsburg; Universitätsstraße 1a 86159 Augsburg Germany
- Institute of Inorganic Chemistry; University of Regensburg; Universitätsstraße 31 93040 Regensburg Germany
| | - Alexander Krach
- Institute of Inorganic Chemistry; University of Regensburg; Universitätsstraße 31 93040 Regensburg Germany
| | - Philipp Peter
- Institute of Inorganic Chemistry; University of Regensburg; Universitätsstraße 31 93040 Regensburg Germany
| | - Richard Weihrich
- Departement of Chemistry; TU Munich; Lichtenbergstr. 4 85474 Garching Germany
- Institute of Inorganic Chemistry; University of Regensburg; Universitätsstraße 31 93040 Regensburg Germany
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Rommel SM, Weihrich R. Reaction of Ni2+and SnS as a Way to Form Ni@SnS and Sn2Ni3S2Nanocrystals: Control of Product Formation and Shape. Chemistry 2015; 21:9863-7. [DOI: 10.1002/chem.201500498] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Indexed: 11/09/2022]
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12
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Skinner WM, Qian G, Buckley AN. Electronic environments in Ni3Pb2S2 (shandite) and its initial oxidation in air. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2013.07.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Wagler J, Brendler E, Langer T, Pöttgen R, Heine T, Zhechkov L. Ylenes in the M(II)→Si(IV) (M=Si, Ge, Sn) coordination mode. Chemistry 2010; 16:13429-34. [PMID: 21110325 DOI: 10.1002/chem.201002191] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The reaction of the methimazolyl (mt, i.e., 2-mercapto-1-methylimidazolide) substituted silane Si(mt)(4) with SnCl(2) and GeCl(2) in dioxane affords the paddlewheel-shaped complexes [ClSi(μ-mt)(4)MCl] (M=Sn (1) and Ge (2), respectively). These compounds represent the first crystallographically characterized hexacoordinate silicon complexes comprising a Sn or Ge atom in the Si coordination sphere. An attempt to synthesize the related silicon compound 3 [ClSi(μ-mt)(4)SiCl] instead afforded the trisilane [ClSi(μ-mt)(4)Si-SiCl(3)] (3a), which provides the first crystallographic evidence for the feasibility of oligosilanes with adjacent hexacoordinate Si atoms. One of the hexacoordinate Si atoms of 3a features the unprecedented (Si(2)S(4))Si skeleton. Natural bonding orbital (NBO) analyses of compounds 1, 2, 3a (and the target compound 3) revealed characteristics of M(II)→Si(IV) (for 2 and 3) or M(I)→Si(IV) (for 3a) dative bonding in the systems with M=Si and Ge, whereas compound 1 exhibits a covalent Sn(III)-Si(III) bond.
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Affiliation(s)
- Jörg Wagler
- Institut für Anorganische Chemie, TU Bergakademie Freiberg, 09596 Freiberg, Germany.
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Weihrich R, Matar SF, Eyert V, Rau F, Zabel M, Andratschke M, Anusca I, Bernert T. Structure, ordering, and bonding of half antiperovskites: PbNi3/2S and BiPd3/2S. PROG SOLID STATE CH 2007. [DOI: 10.1016/j.progsolidstchem.2007.01.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Weihrich R, Anusca I. Half Antiperovskites. III. Crystallographic and Electronic Structure Effects in Sn2−xInxCo3S2. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200500524] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhuang Z, Peng Q, Zhuang J, Wang X, Li Y. Controlled Hydrothermal Synthesis and Structural Characterization of a Nickel Selenide Series. Chemistry 2006; 12:211-7. [PMID: 16259035 DOI: 10.1002/chem.200500724] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A series of nickel selenides (NiSe2 microcrystals, Ni(1-x)Se and Ni3Se2 microspheres) has been successfully synthesized through a convenient, low-temperature hydrothermal method. A good nucleation and growth environment has been created by forming a uniform and transparent solution reaction system. The compositions (including the x value of Ni(1-x)Se), phase structures, as well as the morphologies of nickel selenides, can be controlled by adjusting the Ni/Se ratio of the raw materials, the pH, the reaction temperatures and times, and so forth. The newly produced Se microspheres in the system have been used as both reactant and in situ template to the Ni(1-x)Se microspheres. It is found that Ni(1-x)Se microspheres act as the intermediate precursor during the formation of Ni3Se2 microspheres. Under certain conditions, hexagonal NiSe microspheres can be converted into rhombohedral NiSe nanowires in solution. The formation mechanisms of a series of nickel selenides has been investigated in detail by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses. This work has provided a general, simple, and effective method to control the composition, phase structure, and morphology of metal selenides in aqueous solution, which will be important for inorganic synthesis methodology and further applications of selenides.
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Affiliation(s)
- Zhongbin Zhuang
- Department of Chemistry and the Key Laboratory of Atomic and Molecular Nanosciences (National Center for Nanoscience and Nanotechnology Ministry of Education, China), Tsinghua University, Beijing, 100084, P.R. China
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Weihrich R, Anusca I, Zabel M. Halbantiperowskite: Zur Struktur der Shandite M3/2AS (M = Co, Ni; A = In, Sn) und ihren Typ-Antitypbeziehungen. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200400561] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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