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Zagorac J, Zagorac D, Šrot V, Ranđelović M, Pejić M, van Aken PA, Matović B, Schön JC. Synthesis, Characterization, and Electronic Properties of ZnO/ZnS Core/Shell Nanostructures Investigated Using a Multidisciplinary Approach. MATERIALS (BASEL, SWITZERLAND) 2022; 16:326. [PMID: 36614664 PMCID: PMC9822113 DOI: 10.3390/ma16010326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/23/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
ZnO/ZnS core/shell nanostructures, which are studied for diverse possible applications, ranging from semiconductors, photovoltaics, and light-emitting diodes (LED), to solar cells, infrared detectors, and thermoelectrics, were synthesized and characterized by XRD, HR-(S)TEM, and analytical TEM (EDX and EELS). Moreover, band-gap measurements of the ZnO/ZnS core/shell nanostructures have been performed using UV/Vis DRS. The experimental results were combined with theoretical modeling of ZnO/ZnS (hetero)structures and band structure calculations for ZnO/ZnS systems, yielding more insights into the properties of the nanoparticles. The ab initio calculations were performed using hybrid PBE0 and HSE06 functionals. The synthesized and characterized ZnO/ZnS core/shell materials show a unique three-phase composition, where the ZnO phase is dominant in the core region and, interestingly, the auxiliary ZnS compound occurs in two phases as wurtzite and sphalerite in the shell region. Moreover, theoretical ab initio calculations show advanced semiconducting properties and possible band-gap tuning in such ZnO/ZnS structures.
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Affiliation(s)
- Jelena Zagorac
- Materials Science Laboratory, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
- Centre of Excellence “Cextreme Lab”, Materials Science Laboratory, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - Dejan Zagorac
- Materials Science Laboratory, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
- Centre of Excellence “Cextreme Lab”, Materials Science Laboratory, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - Vesna Šrot
- Max Planck Institute for Solid State Research, Stuttgart Center for Electron Microscopy, 70569 Stuttgart, Germany
| | - Marjan Ranđelović
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Niš, 18000 Niš, Serbia
| | - Milan Pejić
- Materials Science Laboratory, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
- Centre of Excellence “Cextreme Lab”, Materials Science Laboratory, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - Peter A. van Aken
- Max Planck Institute for Solid State Research, Stuttgart Center for Electron Microscopy, 70569 Stuttgart, Germany
| | - Branko Matović
- Materials Science Laboratory, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
- Centre of Excellence “Cextreme Lab”, Materials Science Laboratory, “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - J. Christian Schön
- Nanoscale Science Department, Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
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In situ synthesis of hierarchically-assembled three-dimensional ZnS nanostructures and 3D printed visualization. Sci Rep 2022; 12:16955. [PMID: 36216856 PMCID: PMC9550785 DOI: 10.1038/s41598-022-21297-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/26/2022] [Indexed: 11/08/2022] Open
Abstract
Nanomaterials have gained enormous interest in improving the performance of energy harvest systems, biomedical devices, and high-strength composites. Many studies were performed fabricating more elaborate and heterogeneous nanostructures then the structures were characterized using TEM tomographic images, upgrading the fabrication technique. Despite the effort, intricate fabrication process, agglomeration characteristic, and non-uniform output were still limited to presenting the 3D panoramic views straightforwardly. Here we suggested in situ synthesis method to prepare complex and hierarchically-assembled nanostructures that consisted of ZnS nanowire core and nanoparticles under Ag2S catalyst. We demonstrated that the vaporized Zn and S were solidified in different shapes of nanostructures with the temperatures solely. To our knowledge, this is the first demonstration of synthesizing heterogeneous nanostructures, consisting of a nanowire from the vapor-liquid-solid and then nanoparticles from the vapor-solid grown mechanism by in situ temperature control. The obtained hierarchically-assembled ZnS nanostructures were characterized by various TEM technologies, verifying the crystal growth mechanism. Lastly, electron tomography and 3D printing enabled the nanoscale structures to visualize with centimeter scales. The 3D printing from randomly fabricated nanomaterials is rarely performed to date. The collaborating work could offer a better opportunity to fabricate advanced and sophisticated nanostructures.
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Atomic Layer Assembly Based on Sacrificial Templates for 3D Nanofabrication. MICROMACHINES 2022; 13:mi13060856. [PMID: 35744470 PMCID: PMC9229614 DOI: 10.3390/mi13060856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 02/04/2023]
Abstract
Three-dimensional (3D) nanostructures have attracted widespread attention in physics, chemistry, engineering sciences, and biology devices due to excellent functionalities which planar nanostructures cannot achieve. However, the fabrication of 3D nanostructures is still challenging at present. Reliable fabrication, improved controllability, and multifunction integration are desired for further applications in commercial devices. In this review, a powerful fabrication method to realize 3D nanostructures is introduced and reviewed thoroughly, which is based on atomic layer deposition assisted 3D assembly through various sacrificial templates. The aim of this review is to provide a comprehensive overview of 3D nanofabrication based on atomic layer assembly (ALA) in multifarious sacrificial templates for 3D nanostructures and to present recent advancements, with the ultimate aim to further unlock more potential of this method for nanodevice applications.
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Surface photosensitization of ZnO by ZnS to enhance the photodegradation efficiency for organic pollutants. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04643-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
AbstractIt is challenging to develop a material which has low cost, high activity, good stability and recyclability under light exposure. Apart from these properties, the photocatalyst should also have good visible region absorbance and low electron-hole pair recombination rate. Keeping all this in view, we have designed a simple scalable synthesis of ZnO–ZnS heterostructures for the photocatalytic treatment of industrial waste (p-nitrophenol and methyl orange). The ZnO–ZnS heterostructures are synthesized via a solvent-free route by thermal annealing of solid-state mixture of ZnO and thiourea (a sulphur source) which results in ZnO–ZnS core shell kind of heterostructure formation. The interface formation between the ZnO–ZnS heterostructure favored the band-gap reduction in comparison to the bare ZnO and ZnS nanoparticles. Further, these ZnO–ZnS heterostructures were utilized as a photocatalyst for the degradation of toxic phenolic molecules (p-nitrophenol) and harmful organic dyes (methyl orange) present in the water under the light exposure (> 390 nm).
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Zhu W, Cheng Y, Wang C, Pinna N, Lu X. Transition metal sulfides meet electrospinning: versatile synthesis, distinct properties and prospective applications. NANOSCALE 2021; 13:9112-9146. [PMID: 34008677 DOI: 10.1039/d1nr01070k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
One-dimensional (1D) electrospun nanomaterials have attracted significant attention due to their unique structures and outstanding chemical and physical properties such as large specific surface area, distinct electronic and mass transport, and mechanical flexibility. Over the past years, the integration of metal sulfides with electrospun nanomaterials has emerged as an exciting research topic owing to the synergistic effects between the two components, leading to novel and interesting properties in energy, optics and catalysis research fields for example. In this review, we focus on the recent development of the preparation of electrospun nanomaterials integrated with functional metal sulfides with distinct nanostructures. These functional materials have been prepared via two efficient strategies, namely direct electrospinning and post-synthesis modification of electrospun nanomaterials. In this review, we systematically present the chemical and physical properties of the electrospun nanomaterials integrated with metal sulfides and their application in electronic and optoelectronic devices, sensing, catalysis, energy conversion and storage, thermal shielding, adsorption and separation, and biomedical technology. Additionally, challenges and further research opportunities in the preparation and application of these novel functional materials are also discussed.
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Affiliation(s)
- Wendong Zhu
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Ya Cheng
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Ce Wang
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Nicola Pinna
- Institut für Chemie and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
| | - Xiaofeng Lu
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
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Baranowska-Korczyc A, Mackiewicz E, Ranoszek-Soliwoda K, Nejman A, Trasobares S, Grobelny J, Cieślak M, Celichowski G. A SnO 2 shell for high environmental stability of Ag nanowires applied for thermal management. RSC Adv 2021; 11:4174-4185. [PMID: 35424341 PMCID: PMC8694325 DOI: 10.1039/d0ra10040d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/14/2021] [Indexed: 01/06/2023] Open
Abstract
Since silver nanowires (AgNWs) show high infrared reflectance many studies present their applicability as thermal management products for various wearable textiles. However, their use for practical purposes is only partially evaluated, without focusing on improving their low atmospheric and liquid stability. This report describes a new approach for the topic and proposes a facile method of Ag nanowire passivation with a SnO2 layer for high environmental stability and retention of high infrared reflectance. The one-step passivation process of AgNWs was carried out in the presence of sodium stannate in an aqueous solution at 100 °C, and resulted in the formation of core/shell Ag/SnO2 nanowires. This study presents the morphological, chemical, and structural properties of Ag/SnO2NWs formed with a 14 nm thick SnO2 shell, consisting of 7 nm rutile-type crystals, covering the silver metallic core. The optical properties of the AgNWs changed significantly after shell formation, and the longitudinal and transverse modes in the surface plasmon resonance spectrum were red shifted as a result of the surrounding media dielectric constant changes. The passivation process protected the AgNWs from decomposition in air for over 4 months, and from dissolution in a KCN solution at concentrations up to 0.1 wt%. Moreover, the report shows the microwave irradiation effect on the shell synthesis and previously synthesised Ag/SnO2NWs. The post-synthesis irradiation, as well as the SnO2 shell obtained by microwave assistance, did not allow long-term stability to be achieved. The microwave-assisted synthesis process was also not fast enough to inhibit the formation of prismatic silver structures from the nanowires. The Ag/SnO2NWs with a shell obtained by a simple hydrolysis process, apart from showing high infra-red reflectance on the para-aramid fabric, are highly environmentally stable. The presented SnO2 shell preparation method can protect the AgNW's surface from dissolution or decomposition and facilitate the designing of durable smart wearable thermal materials for various conditions.
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Affiliation(s)
- Anna Baranowska-Korczyc
- The University of Lodz, Faculty of Chemistry, Department of Materials Technology and Chemistry Pomorska 163 90-236 Lodz Poland
| | - Ewelina Mackiewicz
- The University of Lodz, Faculty of Chemistry, Department of Materials Technology and Chemistry Pomorska 163 90-236 Lodz Poland
| | - Katarzyna Ranoszek-Soliwoda
- The University of Lodz, Faculty of Chemistry, Department of Materials Technology and Chemistry Pomorska 163 90-236 Lodz Poland
| | - Alicja Nejman
- ŁUKASIEWICZ-Textile Research Institute, Department of Chemical Textiles Technologies 5/15 Brzezinska Street 92-103 Lodz Poland
| | - Susana Trasobares
- Department of Materials Science and Metallurgical Engineering and Inorganic Chemistry, University of Cadiz 11003 Cadiz Spain
| | - Jarosław Grobelny
- The University of Lodz, Faculty of Chemistry, Department of Materials Technology and Chemistry Pomorska 163 90-236 Lodz Poland
| | - Małgorzata Cieślak
- ŁUKASIEWICZ-Textile Research Institute, Department of Chemical Textiles Technologies 5/15 Brzezinska Street 92-103 Lodz Poland
| | - Grzegorz Celichowski
- The University of Lodz, Faculty of Chemistry, Department of Materials Technology and Chemistry Pomorska 163 90-236 Lodz Poland
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7
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Baranowska-Korczyc A, Mackiewicz E, Ranoszek-Soliwoda K, Grobelny J, Celichowski G. Facile synthesis of SnO 2shell followed by microwave treatment for high environmental stability of Ag nanoparticles. RSC Adv 2020; 10:38424-38436. [PMID: 35517546 PMCID: PMC9057269 DOI: 10.1039/d0ra06159j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/01/2020] [Indexed: 11/21/2022] Open
Abstract
This study describes a new method for passivating Ag nanoparticles (AgNPs) with SnO2 layer and their further treatment by microwave irradiation. The one-step process of SnO2 layer formation was carried out by adding sodium stannate to the boiling aqueous AgNPs solution, which resulted in the formation of core@shell Ag@SnO2 nanoparticles. The coating formation was a tunable process, making it possible to obtain an SnO2 layer thickness in the range from 2 to 13 nm. The morphology, size, zeta-potential, and optical properties of the Ag@SnO2NPs were studied. The microwave irradiation significantly improved the environmental resistance of Ag@SnO2NPs, which remained stable in different biological solutions such as NaCl at 150 mM and 0.1 M, Tris-buffered saline buffer at 0.1 M, and phosphate buffer at pH 5.6, 7.0, and 8.0. Ag@SnO2NPs after microwave irradiation were also stable at biologically relevant pH values, both highly acidic (1.4) and alkaline (13.2). Moreover, AgNPs covered with a 13 nm-thick SnO2 layer were resistant to cyanide up to 0.1 wt%. The microwave-treated SnO2 shell can facilitate the introduction of AgNPs in various solutions and extend their potential application in biological environments by protecting the metal nanostructures from dissolution and aggregation. This study describes a new method for passivating Ag nanoparticles (AgNPs) with SnO2 layer and their further treatment by microwave irradiation.![]()
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Affiliation(s)
- Anna Baranowska-Korczyc
- Faculty of Chemistry
- Department of Materials Technology and Chemistry
- The University of Łódź
- Łódź 90-236
- Poland
| | - Ewelina Mackiewicz
- Faculty of Chemistry
- Department of Materials Technology and Chemistry
- The University of Łódź
- Łódź 90-236
- Poland
| | | | - Jarosław Grobelny
- Faculty of Chemistry
- Department of Materials Technology and Chemistry
- The University of Łódź
- Łódź 90-236
- Poland
| | - Grzegorz Celichowski
- Faculty of Chemistry
- Department of Materials Technology and Chemistry
- The University of Łódź
- Łódź 90-236
- Poland
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8
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Muthukumaran P, Ramya R, Thivya P, Wilson J, Ravi G. Nanocomposite based on restacked crystallites of β-NiS and Ppy for the determination of theophylline and uric acid on screen-printed electrodes. NEW J CHEM 2019. [DOI: 10.1039/c9nj04246f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesized calcinated β-NiS with a highly crystalline porous nature and mixed it with Ppy to prepare a nanocomposite, which exhibited high electrocatalytic activity and this was then used to detect theophylline and uric acid with high sensitivity and stability.
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Affiliation(s)
- P. Muthukumaran
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - R. Ramya
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - P. Thivya
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - J. Wilson
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - G. Ravi
- Photonic Crystals Lab
- Department of Physics
- Alagappa University
- Karaikudi-630004
- India
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9
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Facile and scalable production of heterostructured ZnS-ZnO/Graphene nano-photocatalysts for environmental remediation. Sci Rep 2018; 8:13401. [PMID: 30194393 PMCID: PMC6128855 DOI: 10.1038/s41598-018-31539-7] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 08/06/2018] [Indexed: 11/21/2022] Open
Abstract
A facile and eco-friendly strategy is described for the synthesis of ZnS-ZnO/graphene heterostructured nano-photocatalysts for the first time. This solvent-free and technologically scalable method involves solid-state mixing of graphite oxide (GO), Zn salt and surfeit yet non-toxic elemental sulfur using ball-milling followed by thermal annealing. The as-formed hybrids are composed of uniformly distributed in-situ formed ZnS-ZnO nanoparticles simultaneously within the thermally reduced GO (graphene) matrix. A series of hybrid compositions with varying content of ZnS/ZnO and graphene were prepared and thoroughly characterized. Further, the effect of heterostructure composition on the photocatalytic properties was investigated under visible-light illumination. The synergistic ZnS-ZnO/graphene hybridization promoted the band-gap narrowing compared to the pristine ZnS nanoparticles. The ZnS:ZnO composition was controlled by graphite oxide under thermal treatment and observed to be a crucial factor in enhancement of photocatalytic activity. As a proof of concept, the phase optimized and surface enhanced ZnS-ZnO/graphene nano-photocatalysts was tested towards visible light driven photocatalytic degradation of environmentally harmful organic dyes and toxic phenol molecules from aqueous media. The presented cost-effective strategy provides high potential in large-scale production of heterostructured nano-photocatalysts for environmental remediation and photocatalytic greener production of hydrogen.
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Cheng CC, Weng WC, Lin HI, Chiu JL, Jhao HY, Liao YTA, Yu CTR, Chen H. Fabrication and characterization of distinctive ZnO/ZnS core-shell structures on silicon substrates via a hydrothermal method. RSC Adv 2018; 8:26341-26348. [PMID: 35541952 PMCID: PMC9083076 DOI: 10.1039/c8ra04968h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 07/11/2018] [Indexed: 11/21/2022] Open
Abstract
A distinctive novel ZnO/ZnS core–shell structure on silicon was reported in this study. Compared with previous studies, ZnO nanorods encapsulated by 5 nm ZnS nanograins were observed using a scanning electron microscope. Furthermore, strong (111) cubic ZnS crystalline structures were confirmed using high resolution transmission electron microscopy, selected area diffraction, and X-ray diffraction. The optical properties changed and the antibacterial behaviors were suppressed as the ZnS shells were attached onto the ZnO nanorods. Moreover, the results also indicate that the hydrophobicity could be enhanced as more ZnS nanograins were wrapped onto the ZnO nanorods. The ZnO/ZnS core–shell structures in this research show promise for use in future optoelectronic and biomedical applications. A distinctive novel ZnO/ZnS core–shell structure on silicon was reported in this study.![]()
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Affiliation(s)
- Chin-Chi Cheng
- Department of Energy and Refrigerating Air-Conditioning Engineering Taipei, National Taipei University of Technology Taiwan Republic of China
| | - Wei Chih Weng
- Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University Taiwan Republic of China +886-49-2912238 +886-49-2910960
| | - Hsueh I Lin
- Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University Taiwan Republic of China +886-49-2912238 +886-49-2910960
| | - Jo Lun Chiu
- Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University Taiwan Republic of China +886-49-2912238 +886-49-2910960
| | - Hong-Yu Jhao
- Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University Taiwan Republic of China +886-49-2912238 +886-49-2910960
| | - Yu Ting Amber Liao
- Department of Applied Chemistry, National Chi Nan University Taiwan Republic of China
| | - Chang Tze Ricky Yu
- Department of Applied Chemistry, National Chi Nan University Taiwan Republic of China
| | - Hsiang Chen
- Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University Taiwan Republic of China +886-49-2912238 +886-49-2910960
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11
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Ramon-Marquez T, Medina-Castillo AL, Nagiah N, Fernandez-Gutierrez A, Fernandez-Sanchez JF. A multifunctional material based on co-electrospinning for developing biosensors with optical oxygen transduction. Anal Chim Acta 2018. [DOI: 10.1016/j.aca.2018.02.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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12
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Baranowska-Korczyc A, Kościński M, Coy EL, Grześkowiak BF, Jasiurkowska-Delaporte M, Peplińska B, Jurga S. ZnS coating for enhanced environmental stability and improved properties of ZnO thin films. RSC Adv 2018; 8:24411-24421. [PMID: 35539207 PMCID: PMC9082086 DOI: 10.1039/c8ra02823k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Accepted: 07/02/2018] [Indexed: 01/24/2023] Open
Abstract
Low environmental stability of ZnO nanostructures in hydrophilic systems is a crucial factor limiting their practical applications. ZnO nanomaterials need surface passivation with different water-insoluble compounds. This study describes a one-step passivation process of polycrystalline ZnO films with ZnS as a facile method of ZnO surface coating. A simple sulfidation reaction was carried out in gas-phase H2S and it resulted in formation of a ZnS thin layer on the ZnO surface. The ZnS layer not only inhibited the ZnO dissolving process in water but additionally improved its mechanical and electrical properties. After the passivation process, ZnO/ZnS films remained stable in water for over seven days. The electrical conductivity of the ZnO films increased about 500-fold as a result of surface defect passivation and the removal of oxygen molecules which can trap free carriers. The nanohardness and Young's modulus of the samples increased about 64% and 14%, respectively after the ZnS coating formation. Nanowear tests performed using nanoindentation methods revealed reduced values of surface displacements for the ZnO/ZnS system. Moreover, both ZnO and ZnO/ZnS films showed antimicrobial properties against Escherichia coli. ZnS coating improves mechanical, electrical, antibacterial properties and environmental stability of ZnO nanofilms.![]()
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Affiliation(s)
| | - Mikołaj Kościński
- NanoBioMedical Centre
- Adam Mickiewicz University
- PL-61614 Poznań
- Poland
- Department of Physics and Biophysics
| | - Emerson L. Coy
- NanoBioMedical Centre
- Adam Mickiewicz University
- PL-61614 Poznań
- Poland
| | | | | | - Barbara Peplińska
- NanoBioMedical Centre
- Adam Mickiewicz University
- PL-61614 Poznań
- Poland
| | - Stefan Jurga
- NanoBioMedical Centre
- Adam Mickiewicz University
- PL-61614 Poznań
- Poland
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13
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Zhang M, Zhao X, Zhang G, Wei G, Su Z. Electrospinning design of functional nanostructures for biosensor applications. J Mater Chem B 2017; 5:1699-1711. [DOI: 10.1039/c6tb03121h] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We summarize the recent advances in the electrospinning fabrication of hybrid polymer nanofibers decorated with functionalized nanoscale building blocks (NBBs) to obtain biosensors with better performances.
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Affiliation(s)
- Mingfa Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Xinne Zhao
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Guanghua Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Gang Wei
- Hybrid Materials Interfaces Group
- Faculty of Production Engineering
- University of Bremen
- D-28359 Bremen
- Germany
| | - Zhiqiang Su
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
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14
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Ranjith KS, Senthamizhan A, Balusamy B, Uyar T. Nanograined surface shell wall controlled ZnO–ZnS core–shell nanofibers and their shell wall thickness dependent visible photocatalytic properties. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02556k] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The core–shell form of ZnO–ZnS based heterostructural nanofibers (NF) has received increased attention for use as a photocatalyst owing to its potential for outstanding performance under visible irradiation.
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Affiliation(s)
| | - Anitha Senthamizhan
- UNAM – National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
| | - Brabu Balusamy
- UNAM – National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
| | - Tamer Uyar
- UNAM – National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
- Institute of Materials Science & Nanotechnology
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15
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Kandula S, Jeevanandam P. Synthesis of Cu2O@Ag Polyhedral Core-Shell Nanoparticles by a Thermal Decomposition Approach for Catalytic Applications. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501389] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Wang L, Huang X, Xia J, Zhu D, Li X, Meng X. Three dimensional ZnO nanotube arrays and their optical tuning through formation of type-II heterostructures. CrystEngComm 2016. [DOI: 10.1039/c6ce00148c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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