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Ursaki V, Braniste T, Zalamai V, Rusu E, Ciobanu V, Morari V, Podgornii D, Ricci PC, Adelung R, Tiginyanu I. Aero-ZnS prepared by physical vapor transport on three-dimensional networks of sacrificial ZnO microtetrapods. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2024; 15:490-499. [PMID: 38711580 PMCID: PMC11070954 DOI: 10.3762/bjnano.15.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 04/15/2024] [Indexed: 05/08/2024]
Abstract
Aeromaterials represent a class of increasingly attractive materials for various applications. Among them, aero-ZnS has been produced by hydride vapor phase epitaxy on sacrificial ZnO templates consisting of networks of microtetrapods and has been proposed for microfluidic applications. In this paper, a cost-effective technological approach is proposed for the fabrication of aero-ZnS by using physical vapor transport with Sn2S3 crystals and networks of ZnO microtetrapods as precursors. The morphology of the produced material is investigated by scanning electron microscopy (SEM), while its crystalline and optical qualities are assessed by X-ray diffraction (XRD) analysis and photoluminescence (PL) spectroscopy, respectively. We demonstrate possibilities for controlling the composition and the crystallographic phase content of the prepared aerogels by the duration of the technological procedure. A scheme of deep energy levels and electronic transitions in the ZnS skeleton of the aeromaterial was deduced from the PL analysis, suggesting that the produced aerogel is a potential candidate for photocatalytic and sensor applications.
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Affiliation(s)
- Veaceslav Ursaki
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
- Academy of Sciences of Moldova, Chisinau, Republic of Moldova
| | - Tudor Braniste
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Victor Zalamai
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Emil Rusu
- Institute of Electronic Engineering and Nanotechnology „D. Ghitu”, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Vladimir Ciobanu
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Vadim Morari
- Institute of Electronic Engineering and Nanotechnology „D. Ghitu”, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Daniel Podgornii
- Institute of Applied Physics, State University of Moldova, Chisinau, Republic of Moldova
| | | | - Rainer Adelung
- Department of Material Science, Kiel University, Kiel, Germany
| | - Ion Tiginyanu
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
- Academy of Sciences of Moldova, Chisinau, Republic of Moldova
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Wolff N, Braniste T, Krüger H, Mangelsen S, Islam MR, Schürmann U, Saure LM, Schütt F, Hansen S, Terraschke H, Adelung R, Tiginyanu I, Kienle L. Synthesis and Nanostructure Investigation of Hybrid β-Ga 2 O 3 /ZnGa 2 O 4 Nanocomposite Networks with Narrow-Band Green Luminescence and High Initial Electrochemical Capacity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207492. [PMID: 36782364 DOI: 10.1002/smll.202207492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/20/2023] [Indexed: 05/04/2023]
Abstract
The material design of functional "aero"-networks offers a facile approach to optical, catalytical, or and electrochemical applications based on multiscale morphologies, high large reactive area, and prominent material diversity. Here in this paper, the synthesis and structural characterization of a hybrid β-Ga2 O3 /ZnGa2 O4 nanocomposite aero-network are presented. The nanocomposite networks are studied on multiscale with respect to their micro- and nanostructure by X-ray diffraction (XRD) and transmission electron microscopy (TEM) and are characterized for their photoluminescent response to UV light excitation and their electrochemical performance with Li-ion conversion reaction. The structural investigations reveal the simultaneous transformation of the precursor aero-GaN(ZnO) network into hollow architectures composed of β-Ga2 O3 and ZnGa2 O4 nanocrystals with a phase ratio of ≈1:2. The photoluminescence of hybrid aero-β-Ga2 O3 /ZnGa2 O4 nanocomposite networks demonstrates narrow band (λem = 504 nm) green light emission of ZnGa2 O4 under UV light excitation (λex = 300 nm). The evaluation of the metal-oxide network performance for electrochemical application for Li-ion batteries shows high initial capacities of ≈714 mAh g-1 at 100 mA g-1 paired with exceptional rate performance even at high current densities of 4 A g-1 with 347 mAh g-1 . This study provides is an exciting showcase example of novel networked materials and demonstrates the opportunities of tailored micro-/nanostructures for diverse applications a diversity of possible applications.
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Affiliation(s)
- Niklas Wolff
- Synthesis and Real Structure, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
- Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian-Albrechts-Platz 4, D-24118, Kiel, Germany
| | - Tudor Braniste
- National Center for Materials Study and Testing, Technical University of Moldova, Stefan cel Mare 168, Chisinau, MD-2004, Moldova
| | - Helge Krüger
- Functional Nanomaterials, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
| | - Sebastian Mangelsen
- Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian-Albrechts-Platz 4, D-24118, Kiel, Germany
- Solid State Chemistry and Catalysis, Department of Inorganic Chemistry, Kiel University, Max-Eyth-Straße 2, D-24118, Kiel, Germany
| | - Md Redwanul Islam
- Synthesis and Real Structure, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
| | - Ulrich Schürmann
- Synthesis and Real Structure, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
- Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian-Albrechts-Platz 4, D-24118, Kiel, Germany
| | - Lena M Saure
- Functional Nanomaterials, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
| | - Fabian Schütt
- Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian-Albrechts-Platz 4, D-24118, Kiel, Germany
- Functional Nanomaterials, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
| | - Sandra Hansen
- Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian-Albrechts-Platz 4, D-24118, Kiel, Germany
- Functional Nanomaterials, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
| | - Huayna Terraschke
- Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian-Albrechts-Platz 4, D-24118, Kiel, Germany
- Solid State Chemistry and Catalysis, Department of Inorganic Chemistry, Kiel University, Max-Eyth-Straße 2, D-24118, Kiel, Germany
| | - Rainer Adelung
- Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian-Albrechts-Platz 4, D-24118, Kiel, Germany
- Functional Nanomaterials, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
| | - Ion Tiginyanu
- National Center for Materials Study and Testing, Technical University of Moldova, Stefan cel Mare 168, Chisinau, MD-2004, Moldova
- Academy of Sciences of Moldova, Stefan cel Mare av. 1, Chisinau, MD-2001, Moldova
| | - Lorenz Kienle
- Synthesis and Real Structure, Department of Material Science, Kiel University, Kaiserstraße 2, D-24143, Kiel, Germany
- Kiel Nano, Surface and Interface Science (KiNSIS), Kiel University, Christian-Albrechts-Platz 4, D-24118, Kiel, Germany
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