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Gul Z, Ullah S, Khan S, Ullah H, Khan MU, Ullah M, Ali S, Altaf AA. Recent Progress in Nanoparticles Based Sensors for the Detection of Mercury (II) Ions in Environmental and Biological Samples. Crit Rev Anal Chem 2024; 54:44-60. [PMID: 35290138 DOI: 10.1080/10408347.2022.2049676] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
To maintain a green and sustainable environment for human beings, rapid detection of potentially toxic heavy metals like mercury (Hg(II)) has attracted great attention. Recently, sensors have been designed which can selectively detect Hg(II) over other common available cations and give a naked eye or fluorometric response. In the last two decades, the trend is shifting from bulky organic chemosensors toward nanoparticles due to their rapid response, low cost, eco-friendly and easy synthesis. In this review, promising nanoparticles-based sensors for Hg(II) detection are discussed. The nano-sensors are functionalized with nucleotide or other suitable materials which coordinate with Hg(II) ions and give clear color or fluorescence change. The operational mechanisms are discussed focusing on its four basic types. The nanoparticles-based sensors are even able to detect Hg in three different oxidation states (Hg(II), Hg(I) and Hg(0)). Recently, the trend has been shifted from ordinary nanoparticles to magnetic nanoparticles to simultaneously detect and remove Hg(II) ions from environmental samples. Furthermore, the nano-sensors for Hg(II) are compared with each other and with the reported organic chemosensors.
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Affiliation(s)
- Zarif Gul
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Shaheed Ullah
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Sikandar Khan
- Department of Chemistry, University of Malakand, Chakdara, Pakistan
| | - Hayat Ullah
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Misbah Ullah Khan
- Center for Nano-Science, University of Okara, Okara, Punjab, Pakistan
| | - Munzer Ullah
- Department of Biochemistry, University of Okara, Okara, Punjab, Pakistan
| | - Shujat Ali
- College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou, PR China
| | - Ataf Ali Altaf
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
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Gul Z, Iqbal A, Shoukat J, Anila A, Rahman R, Ullah S, Zeeshan M, Ashiq MS, Altaf AA. Nanoparticles Based Sensors for Cyanide Ion Sensing, Basic Principle, Mechanism and Applications. Crit Rev Anal Chem 2023:1-15. [PMID: 38117472 DOI: 10.1080/10408347.2023.2295511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Rapidly detecting potentially toxic ions such as cyanide is paramount to maintaining a sustainable and environmentally friendly ecosystem for living organisms. In recent years, molecular sensors have been developed to detect cyanide ions, which provide a naked-eye or fluorometric response, making them an ideal choice for cyanide sensing. Nanosensors, on the other hand, have become increasingly popular over the last two decades due water solubility, quick reaction times, environmental friendliness, and straightforward synthesis. Researchers have designed many nanosensors and successfully utilized them for the detection of cyanide ions in various environmental samples. The majority of these sensors use gold and silver-based nanosensors because cyanide ions have a high affinity for these metals ions and coordinate through covalent bonds. These metal nanoparticles are typically combined or coated with fluorescent materials, which quench their fluorescence. However, adding cyanide ions etches out the metal nanoparticles, restoring their fluorescence/color. This principle has been followed by most nanosensors used for cyanide ion sensing. In this review, different nanosensors and their sensing mechanisms are discussed in relation to cyanide ions. The primary purpose is to compare the sensing abilities of these sensors, mainly their sensitivity, advantages, application and to find out research gaps for future work. In this review paper, the development made in nanosensors in the last thirteen years (2010-2023) was discussed and the nanosensors for cyanide ions were compared with molecular sensors while the nanosensors with the excellent limit of detection were highlighted.
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Affiliation(s)
- Zarif Gul
- Departments of Chemistry, Government Degree College Gulabad, Gulabad, Khyber Pakhtunkhwa, Pakistan
| | - Aqsa Iqbal
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Javeria Shoukat
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Anila Anila
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
| | - Rafia Rahman
- Department of Biological sciences, National University of Medical Science, Rawalpindi, Punjab, Pakistan
| | - Shaheed Ullah
- Department of Chemistry, Kohsar University, Murree, Punjab, Pakistan
| | - Muhammad Zeeshan
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | | | - Ataf Ali Altaf
- Department of Chemistry, University of Okara, Okara, Punjab, Pakistan
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Dimitriou C, Psathas P, Solakidou M, Deligiannakis Y. Advanced Flame Spray Pyrolysis (FSP) Technologies for Engineering Multifunctional Nanostructures and Nanodevices. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:3006. [PMID: 38063702 PMCID: PMC10707979 DOI: 10.3390/nano13233006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 09/06/2024]
Abstract
Flame spray pyrolysis (FSP) is an industrially scalable technology that enables the engineering of a wide range of metal-based nanomaterials with tailored properties nanoparticles. In the present review, we discuss the recent state-of-the-art advances in FSP technology with regard to nanostructure engineering as well as the FSP reactor setup designs. The challenges of in situ incorporation of nanoparticles into complex functional arrays are reviewed, underscoring FSP's transformative potential in next-generation nanodevice fabrication. Key areas of focus include the integration of FSP into the technology readiness level (TRL) for nanomaterials production, the FSP process design, and recent advancements in nanodevice development. With a comprehensive overview of engineering methodologies such as the oxygen-deficient process, double-nozzle configuration, and in situ coatings deposition, this review charts the trajectory of FSP from its foundational roots to its contemporary applications in intricate nanostructure and nanodevice synthesis.
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Affiliation(s)
| | | | | | - Yiannis Deligiannakis
- Laboratory of Physical Chemistry of Materials & Environment, Department of Physics, University of Ioannina, 45110 Ioannina, Greece
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Chrystie RSM. A Review on 1-D Nanomaterials: Scaling-Up with Gas-Phase Synthesis. CHEM REC 2023; 23:e202300087. [PMID: 37309743 DOI: 10.1002/tcr.202300087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/04/2023] [Indexed: 06/14/2023]
Abstract
Nanowire-like materials exhibit distinctive properties comprising optical polarisation, waveguiding, and hydrophobic channelling, amongst many other useful phenomena. Such 1-D derived anisotropy can be further enhanced by arranging many similar nanowires into a coherent matrix, known as an array superstructure. Manufacture of nanowire arrays can be scaled-up considerably through judicious use of gas-phase methods. Historically, the gas-phase approach however has been extensively used for the bulk and rapid synthesis of isotropic 0-D nanomaterials such as carbon black and silica. The primary goal of this review is to document recent developments, applications, and capabilities in gas-phase synthesis methods of nanowire arrays. Secondly, we elucidate the design and use of the gas-phase synthesis approach; and finally, remaining challenges and needs are addressed to advance this field.
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Affiliation(s)
- Robin S M Chrystie
- Department of Chemical Engineering, King Fahd University of Petroleum & Minerals, KFUPM Box 5050, Dhahran, 31261, Saudi Arabia
- IRC for Membranes & Water Security, King Fahd University of Petroleum & Minerals, KFUPM Box 5051, Dhahran, 31261, Saudi Arabia
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Zindrou A, Belles L, Solakidou M, Boukos N, Deligiannakis Y. Non-graphitized carbon/Cu 2O/Cu 0 nanohybrids with improved stability and enhanced photocatalytic H 2 production. Sci Rep 2023; 13:13999. [PMID: 37634030 PMCID: PMC10460407 DOI: 10.1038/s41598-023-41211-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023] Open
Abstract
Cu2O is a highly potent photocatalyst, however photocorrosion stands as a key obstacle for its stability in photocatalytic technologies. Herein, we show that nanohybrids of Cu2O/Cu0 nanoparticles interfaced with non-graphitized carbon (nGC) constitute a novel synthesis route towards stable Cu-photocatalysts with minimized photocorrosion. Using a Flame Spray Pyrolysis (FSP) process that allows synthesis of anoxic-Cu phases, we have developed in one-step a library of Cu2O/Cu0 nanocatalysts interfaced with nGC, optimized for enhanced photocatalytic H2 production from H2O. Co-optimization of the nGC and the Cu2O/Cu0 ratio is shown to be a key strategy for high H2 production, > 4700 μmoles g-1 h-1 plus enhanced stability against photocorrosion, and onset potential of 0.234 V vs. RHE. After 4 repetitive reuses the catalyst is shown to lose less than 5% of its photocatalytic efficiency, while photocorrosion was < 6%. In contrast, interfacing of Cu2O/Cu0 with graphitized-C is not as efficient. Raman, FT-IR and TGA data are analyzed to explain the undelaying structural functional mechanisms where the tight interfacing of nGC with the Cu2O/Cu0 nanophases is the preferred configuration. The present findings can be useful for wider technological goals that demand low-cost engineering, high stability Cu-nanodevices, prepared with industrially scalable process.
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Affiliation(s)
- Areti Zindrou
- Laboratory of Physical Chemistry of Materials & Environment, Department of Physics, University of Ioannina, Ioannina, Greece
| | - Loukas Belles
- Laboratory of Physical Chemistry of Materials & Environment, Department of Physics, University of Ioannina, Ioannina, Greece
| | - Maria Solakidou
- Laboratory of Physical Chemistry of Materials & Environment, Department of Physics, University of Ioannina, Ioannina, Greece
| | - Nikos Boukos
- Institute of Nanoscience and Nanotechnology (INN), NCSR Demokritos, 15310, Athens, Greece
| | - Yiannis Deligiannakis
- Laboratory of Physical Chemistry of Materials & Environment, Department of Physics, University of Ioannina, Ioannina, Greece.
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Zindrou A, Deligiannakis Y. Quantitative In Situ Monitoring of Cu-Atom Release by Cu 2O Nanocatalysts under Photocatalytic CO 2 Reduction Conditions: New Insights into the Photocorrosion Mechanism. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111773. [PMID: 37299676 DOI: 10.3390/nano13111773] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 05/18/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023]
Abstract
Cu2O is among the most promising photocatalysts for CO2 reduction, however its photocorrosion remains a standalone challenge. Herein, we present an in situ study of the release of Cu ions from Cu2O nanocatalysts under photocatalytic conditions in the presence of HCO3 as a catalytic substrate in H2O. The Cu-oxide nanomaterials were produced by Flame Spray Pyrolysis (FSP) technology. Using Electron Paramagnetic Resonance (EPR) spectroscopy in tandem with analytical Anodic Stripping Voltammetry (ASV), we monitored in situ the Cu2+ atom release from the Cu2O nanoparticles in comparison with CuO nanoparticles under photocatalytic conditions. Our quantitative, kinetic data show that light has detrimental effect on the photocorrosion of Cu2O and ensuing Cu2+ ion release in the H2O solution, up to 15.7% of its mass. EPR reveals that HCO3 acts as a ligand of the Cu2+ ions, promoting the liberation of {HCO3-Cu} complexes in solution from Cu2O, up to 27% of its mass. HCO3 alone exerted a marginal effect. XRD data show that under prolonged irradiation, part of Cu2+ ions can reprecipitate on the Cu2O surface, creating a passivating CuO layer that stabilizes the Cu2O from further photocorrosion. Including isopropanol as a hole scavenger has a drastic effect on the photocorrosion of Cu2O nanoparticles and suppresses the release of Cu2+ ions to the solution. Methodwise, the present data exemplify that EPR and ASV can be useful tools to help quantitatively understand the solid-solution interface photocorrosion phenomena for Cu2O.
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Affiliation(s)
- Areti Zindrou
- Laboratory of Physical Chemistry of Materials & Environment, Department of Physics, University of Ioannina, 45110 Ioannina, Greece
| | - Yiannis Deligiannakis
- Laboratory of Physical Chemistry of Materials & Environment, Department of Physics, University of Ioannina, 45110 Ioannina, Greece
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Huang M, Cao X, Zhang J, Liu H, Lu J, Yi D, Ma Y. Mesosphere of Carbon-Shelled Copper Nanoparticles with High Conductivity and Thermal Stability via Direct Carbonization of Polymer Soft Templates. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7536. [PMID: 36363127 PMCID: PMC9654284 DOI: 10.3390/ma15217536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Copper nanoparticle (Cu NP) is a promising replacement for noble metal nanoparticles due to its high electrical conductivity and low cost. However, Cu NPs are relatively active compared to noble metals, and current ways of protecting Cu NPs from oxidation by encapsulation have severe drawbacks, such as a long reaction time and complicated processes. Here, a facial and effective method to prepare the mesosphere of carbon-shelled copper nanoparticles (Cu@MC) was demonstrated, and the resulting Cu@MC was both highly electrically conductive and thermally stable. Cu@organic (100 nm) was first synthesized by the reduction of Cu ions with poly (vinyl pyrrolidone) (PVP) and sodium poly ((naphthalene-formaldehyde) sulfonate) (Na-PNFS) as soft templates. Then, the carbon shells were obtained by in situ carbonization of the polymer soft templates. The Cu@organic and Cu@MC showed an anti-oxidation ability up to 175 and 250 °C in the air atmosphere, respectively. Furthermore, the Cu@MC exhibited excellent volume resistivity of 7.2 × 10-3 Ω·cm under 20 MPa, and showed promising application potential in electric sensors and devices.
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Affiliation(s)
- Min Huang
- School of Material Science and Engineering, Central South University, Changsha 410083, China
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xinyu Cao
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jingnan Zhang
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Huiqun Liu
- School of Material Science and Engineering, Central South University, Changsha 410083, China
| | - Jiaxin Lu
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Danqing Yi
- School of Material Science and Engineering, Central South University, Changsha 410083, China
| | - Yongmei Ma
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Hirano T, Kikkawa J, Shimokuri D, Nandiyanto ABD, Ogi T. Sinter-Necked, Mixed Nanoparticles of Metallic Tungsten and Tungsten Oxide Produced in Fuel-Rich Methane/Air Tubular Flames. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2021. [DOI: 10.1252/jcej.21we009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tomoyuki Hirano
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University
| | - Jun Kikkawa
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University
| | - Daisuke Shimokuri
- Mechanical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University
| | | | - Takashi Ogi
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University
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Prakash V, Kumari A, Kaur H, Kumar M, Gupta S, Bala R. Green synthesis, characterization and antimicrobial activities of Copper nanoparticles from the rhizomes extract of Picrorhiza kurroa. Pharm Nanotechnol 2021; 9:298-306. [PMID: 34514996 DOI: 10.2174/2211738509666210910142027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/24/2021] [Accepted: 07/12/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Green synthesized nanoparticles from the solvent extract of various plant parts show better biological activities as compared to parent solvent plant extract. Traditionally rhizomes of Picrorhiza kurroa are used to cure various diseases like diarrhea, fever, jaundice, eye infection, skin problems, asthma, arthritis, cancer, diabetes, gastrointestinal problems. OBJECTIVES Present study describes the synthesis of copper nanoparticles from a hydroethanolic extract of P. kurroa rhizomes (CuNPs-Pk) and their evaluation for antimicrobial activities against gram-negative, gram-positive bacterial, and fungal strains. METHODS The solution of copper sulfate and hydroethanolic extract of rhizomes of P. kurroa was mixed with help of a magnetic stirrer at 60°C temperature for 1 h. The blue color of CuSO4.5H2O changed to brownish-black colored copper nanoparticles within 10 minutes. These nanoparticles were centrifuged at 4000 rpm for 20 min, washed with ethanol, followed by deionized water, dried, and were characterized by Ultra violet-visible (UV-Vis) absorption spectra, Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (TEM). Different concentrations of hydroethanolic extract of Picrorhiza kurroa rhizomes (HEEPk), CuNPs-Pk and copper oxide nanoparticles (bare CuO) ranging from 100-400 ppm had been studied against selected bacterial and fungal strains by using the well plate diffusion method. Ciprofloxin and fluconazole were used as standard and Dimethyl sulfoxide (DMSO) as a control for selected strains. RESULTS The UV-Vis spectral studies confirmed the surface plasmon resonance of green-synthesized CuNPs-Pk. The particle size was found to be 275-285 nm. FTIR analysis of biosynthesis nanoparticles have been confirm the presence of various functional groups (flavonoids, glycosides, tannins, phenols). SEM and TEM of biosynthesized nanoparticles have predicted their spheric al shape and their size (20-40 nm) and These particles have shown effective antimicrobial activities against selected pathogenic organisms viz. Escherichia coli, Staphylococcus aureus, and Aspergillus niger than that of HEEPk and bare CuO. CONCLUSIONS The CuNPs-Pk show effective antimicrobial activities against bacterial and fungal pathogens as compared to HEEPk and bare CuO.
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Affiliation(s)
- Vinit Prakash
- Department of Chemistry, M.M. University, Sadopur-Ambala (134007), Haryana. India
| | - Anjana Kumari
- Department of Chemistry, M.M. University, Sadopur-Ambala (134007), Haryana. India
| | - Harpreet Kaur
- Department of Chemistry, M.M. University, Sadopur-Ambala (134007), Haryana. India
| | - Manoj Kumar
- Department of Chemistry, M.M. University, Sadopur-Ambala (134007), Haryana. India
| | - Sumeet Gupta
- M.M. College of Pharmacy, M.M. University, Mullana (133203), Haryana . India
| | - Ritu Bala
- Department of Chemistry, Guru Nanak Dev University (143005), Amritsar . India
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Han Y, Varadarajan A, Kim T, Zheng G, Kitani K, Kelliher A, Rikakis T, Park YL. Smart Skin: Vision-Based Soft Pressure Sensing System for In-Home Hand Rehabilitation. Soft Robot 2021; 9:473-485. [PMID: 34415805 PMCID: PMC9232239 DOI: 10.1089/soro.2020.0083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We introduce a novel in-home hand rehabilitation system for monitoring hand motions and assessing grip forces of stroke patients. The overall system is composed of a sensing device and a computer vision system. The sensing device is a lightweight cylindrical object for easy grip and manipulation, which is covered by a passive sensing layer called "Smart Skin." The Smart Skin is fabricated using soft silicone elastomer, which contains embedded microchannels partially filled with colored fluid. When the Smart Skin is compressed by grip forces, the colored fluid rises and fills in the top surface display area. Then, the computer vision system captures the image of the display area through a red-green-blue camera, detects the length change of the liquid through image processing, and eventually maps the liquid length to the calibrated force for estimating the gripping force. The passive sensing mechanism of the proposed Smart Skin device works in conjunction with a single camera setup, making the system simple and easy to use, while also requiring minimum maintenance effort. Our system, on one hand, aims to support home-based rehabilitation therapy with minimal or no supervision by recording the training process and the force data, which can be automatically conveyed to physical therapists. In contrast, the therapists can also remotely instruct the patients with their training prescriptions through online videos. This study first describes the design, fabrication, and calibration of the Smart Skin, and the algorithm for image processing, and then presents experimental results from the integrated system. The Smart Skin prototype shows a relatively linear relationship between the applied force and the length change of the liquid in the range of 0-35 N. The computer vision system shows the estimation error <4% and a relatively high stability in estimation under different hand motions.
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Affiliation(s)
- Yuanfeng Han
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland, USA
| | - Aadith Varadarajan
- Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
| | - Taekyoung Kim
- Department of Mechanical Engineering, Institute of Advanced Machines and Design, Institute of Engineering Research, Seoul National University, Seoul, Korea
| | - Gang Zheng
- Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
| | - Kris Kitani
- Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
| | - Aisling Kelliher
- Department of Computer Science, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Thanassis Rikakis
- Department of Bioengineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Yong-Lae Park
- Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA.,Department of Mechanical Engineering, Institute of Advanced Machines and Design, Institute of Engineering Research, Seoul National University, Seoul, Korea
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Aghaee Sarbarze S, Latifi M, Rasouli M, Rousselot S, Dollé M, Chaouki J. Pulse‐assisted fluidization of nanoparticles: Case of lithium iron phosphate material. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Samira Aghaee Sarbarze
- Process Engineering Advanced Research Lab (PEARL), Chemical Engineering Department Polytechnique Montréal Montréal Québec Canada
- NeoCtech Corp Montréal Québec Canada
| | - Mohammad Latifi
- Process Engineering Advanced Research Lab (PEARL), Chemical Engineering Department Polytechnique Montréal Montréal Québec Canada
- NeoCtech Corp Montréal Québec Canada
| | - Majid Rasouli
- Process Engineering Advanced Research Lab (PEARL), Chemical Engineering Department Polytechnique Montréal Montréal Québec Canada
- Dupont Canada Kingston Ontario Canada
| | - Steeve Rousselot
- Department of Chemistry, Faculty of Arts and Sciences University of Montréal Montréal Québec Canada
| | - Mickaël Dollé
- Department of Chemistry, Faculty of Arts and Sciences University of Montréal Montréal Québec Canada
| | - Jamal Chaouki
- Process Engineering Advanced Research Lab (PEARL), Chemical Engineering Department Polytechnique Montréal Montréal Québec Canada
- NeoCtech Corp Montréal Québec Canada
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Abstract
The synthesis of nanomaterials, with characteristic dimensions of 1 to 100 nm, is a key component of nanotechnology. Vapor-phase synthesis of nanomaterials has numerous advantages such as high product purity, high-throughput continuous operation, and scalability that have made it the dominant approach for the commercial synthesis of nanomaterials. At the same time, this class of methods has great potential for expanded use in research and development. Here, we present a broad review of progress in vapor-phase nanomaterial synthesis. We describe physically-based vapor-phase synthesis methods including inert gas condensation, spark discharge generation, and pulsed laser ablation; plasma processing methods including thermal- and non-thermal plasma processing; and chemically-based vapor-phase synthesis methods including chemical vapor condensation, flame-based aerosol synthesis, spray pyrolysis, and laser pyrolysis. In addition, we summarize the nanomaterials produced by each method, along with representative applications, and describe the synthesis of the most important materials produced by each method in greater detail.
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Affiliation(s)
- Mohammad Malekzadeh
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Mark T Swihart
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. and RENEW Institute, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
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Tegenaw A, Sorial GA, Sahle-Demessie E, Han C. Role of water chemistry on stability, aggregation, and dissolution of uncoated and carbon-coated copper nanoparticles. ENVIRONMENTAL RESEARCH 2020; 187:109700. [PMID: 32480027 PMCID: PMC8573777 DOI: 10.1016/j.envres.2020.109700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 04/21/2020] [Accepted: 05/18/2020] [Indexed: 06/11/2023]
Abstract
Intentional or accidental release of copper nanoparticles (Cu-NPs) from consumer products during manufacturing, use, and end-of-life management could pose health and ecological risks. This paper presents a detailed study on the role of water chemistry on the fate of uncoated and carbon-coated Cu-NPs dispersed in aqueous cetyltrimethylammonium bromide (CTAB) surfactant in the presence and absence of humic acids (HAs). A range of water chemistry and HAs had minimum impact on hydrodynamic diameter and zeta-potential values of uncoated and carbon-coated Cu-NPs. The water pH significantly (p < 0.001) affected the aggregation of uncoated Cu-NPs unlike that of carbon-coated Cu-NPs; however, the presence of HAs increased the stability of uncoated Cu-NPs. Although CTAB is considered as an efficient dispersant to stabilize Cu-NPs, the effect descended with time for uncoated Cu-NPs. The dissolution of Cu over time decreased with increasing pH for both uncoated (0.5-50% weight) and carbon-coated (0.5-40% weight) Cu-NPs. However, carbon-coated Cu-NPs exhibited significant dissolution (p < 0.001) at neutral pH than uncoated Cu-NPs may be due to the additional carbon it acquired during coating. Increasing HAs concentration from 0 to 15 mg L-1 at pH 5.5 inhibited aggregations but enhanced dissolution of the uncoated and carbon-coated Cu-NPs. These findings inform risk analysis of Cu-NPs including how Cu-NPs fate, mobility and bioavailability are modulated by particles coating and dispersant, HAs presence, water chemistry and exposure time in dispersion media.
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Affiliation(s)
- Ayenachew Tegenaw
- Environmental Engineering Program, Department of Chemical and Environmental Engineering, College of Engineering and Applied Science, University of Cincinnati, 701 Engineering Research Center, 2901 Woodside Drive P.O. Box 210012, Cincinnati, OH, 45221-0012, United States
| | - George A Sorial
- Environmental Engineering Program, Department of Chemical and Environmental Engineering, College of Engineering and Applied Science, University of Cincinnati, 701 Engineering Research Center, 2901 Woodside Drive P.O. Box 210012, Cincinnati, OH, 45221-0012, United States.
| | - Endalkachew Sahle-Demessie
- U.S. Environmental Protection Agency, Office of Research and Development, Center for Environmental Solution and Emergency Response, 26 W. Martin Luther Drive, Cincinnati, OH, 45268, United States
| | - Changseok Han
- Department of Environmental Engineering, College of Engineering, INHA University, 100 Inharo, Nam-gu Incheon, 22212, South Korea
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The Effect of Nanosizing on the Oxidation of Partially Oxidized Copper Nanoparticles. MATERIALS 2020; 13:ma13122878. [PMID: 32604933 PMCID: PMC7345119 DOI: 10.3390/ma13122878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/22/2020] [Accepted: 06/25/2020] [Indexed: 11/16/2022]
Abstract
Copper nanoparticles are of great interest in various applications, such as catalysis, cooling fluids, conductive inks or for their antibacterial activity. In this paper, the thermal behavior of copper nanoparticles was studied using thermogravimetry, differential thermal analysis and differential scanning calorimetry. Original Cu samples as well as the products of oxidation were analysed by X-ray diffraction, scanning/transmission electron microscopy and energy dispersive spectroscopy. A step-by-step oxidation mechanism during the oxidation of Cu nano-powders was observed. The Cu-nano oxidation starts slightly above 150 °C when bulk copper does not yet react. The dominant oxidation product in the first step is Cu2O while CuO was identified as the final state of oxidation. Our results confirm an easier oxidation process of Cu-nano than Cu-micro particles, which must be attributed to kinetic not thermodynamic aspects of oxidation reactions.
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16
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One-Step Synthesis of Graphene, Copper and Zinc Oxide Graphene Hybrids via Arc Discharge: Experiments and Modeling. COATINGS 2020. [DOI: 10.3390/coatings10040308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this paper, we report on a modified arc process to synthetize graphene, copper and zinc oxide graphene hybrids. The anode was made of pure graphite or graphite mixed with metals or metal oxides. After applying a controlled direct current, plasma is created in the interelectrode region and the anode is consumed by eroding. Continuous and abundant flux of small carbon, zinc or copper species, issued from the anode at a relatively high temperature, flows through the plasma and condenses in the vicinity of a water-cooled cathode leading to few-layered graphene sheets and highly ordered carbon structures. When the graphite rod is filled with copper or zinc oxide nanoparticles, few layers of curved graphene films were anchored with spherical Cu and ZnO nanoparticles leading to a one-step process synthesis of graphene hybrids, which combine the synergetic properties of graphene along with nanostructured metals or semiconducting materials. The as-prepared samples were characterized by Raman spectroscopy, X-ray diffraction (XRD), spatially resolved electron energy loss spectroscopy (EELS), energy filtered elemental mapping and transmission electron microscopy (TEM). In addition to the experimental study, numerical simulations were performed to determine the velocity, temperature and chemical species distributions in the arc plasma under specific graphene synthesis conditions, thereby providing valuable insight into growth mechanisms.
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Yue H, Marasini S, Ahmad MY, Ho SL, Cha H, Liu S, Jang YJ, Tegafaw T, Ghazanfari A, Miao X, Chae KS, Chang Y, Lee GH. Carbon-coated ultrasmall gadolinium oxide (Gd2O3@C) nanoparticles: Application to magnetic resonance imaging and fluorescence properties. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124261] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Yang G, Gao Q, Yang S, Yin S, Cai X, Yu X, Zhang S, Fang Y. Strong adsorption of tetracycline hydrochloride on magnetic carbon-coated cobalt oxide nanoparticles. CHEMOSPHERE 2020; 239:124831. [PMID: 31526986 DOI: 10.1016/j.chemosphere.2019.124831] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/05/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
The overuse of antibiotics, including tetracycline hydrochloride (TC), seriously threatens human health and ecosystems. In this work, magnetic carbon-coated cobalt oxide nanoparticles (CoO@C) were prepared by one-step annealing method and used as an adsorbent for efficient removal of TC from aqueous solution. The characteristic of the materials was studied by SEM, TEM, and XRD, revealing CoO nanoparticles (≤10 nm) were coated by carbon layer. Several influencial parameters, such as annealing temperature and pH on adsorption of TC, were explored, and found that the maximum adsorption capacity of CoO@C on TC reached as high as 769.43 mg g-1. Furthermore, CoO@C displayed excellent stability and reusability. After four repeated use of the adsorbent, the adsorption capacity still remained at 90% of the initial capacity. The pseudo-second order model and Temkin model proved that it was an exothermic chemical adsorption process. Furthermore, after analysis of FT-IR, Zeta-potential, XPS, the positive charge on the surface of CoO@C forms a strong electrostatic interaction with TC, and in addition, a surface bond is formed between the adsorbent and the TC molecule. This work provides a novel and efficient adsorbent for the purification of TC-containing wastewater.
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Affiliation(s)
- Guanrong Yang
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510643, China
| | - Qiongzhi Gao
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510643, China
| | - Siyuan Yang
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510643, China
| | - Shiheng Yin
- Analytical and Testing Center, South China University of Technology, Guangzhou, 510640, PR China
| | - Xin Cai
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510643, China
| | - Xiaoyuan Yu
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510643, China
| | - Shengsen Zhang
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510643, China.
| | - Yueping Fang
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510643, China
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Roy NK, Behera D, Dibua OG, Foong CS, Cullinan MA. A novel microscale selective laser sintering (μ-SLS) process for the fabrication of microelectronic parts. MICROSYSTEMS & NANOENGINEERING 2019; 5:64. [PMID: 34567614 PMCID: PMC8433322 DOI: 10.1038/s41378-019-0116-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/25/2019] [Accepted: 09/13/2019] [Indexed: 05/27/2023]
Abstract
One of the biggest challenges in microscale additive manufacturing is the production of three-dimensional, microscale metal parts with a high enough throughput to be relevant for commercial applications. This paper presents a new microscale additive manufacturing process called microscale selective laser sintering (μ-SLS) that can produce true 3D metal parts with sub-5 μm resolution and a throughput of greater than 60 mm3/hour. In μ-SLS, a layer of metal nanoparticle ink is first coated onto a substrate using a slot die coating system. The ink is then dried to produce a uniform nanoparticle layer. Next, the substrate is precisely positioned under an optical subsystem using a set of coarse and fine nanopositioning stages. In the optical subsystem, laser light that has been patterned using a digital micromirror array is used to heat and sinter the nanoparticles into the desired patterns. This set of steps is then repeated to build up each layer of the 3D part in the μ-SLS system. Overall, this new technology offers the potential to overcome many of the current limitations in microscale additive manufacturing of metals and become an important process in microelectronics packaging applications.
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Affiliation(s)
- Nilabh K. Roy
- Department of Mechanical Engineering, The University of Texas at Austin, 204 E. Dean Keeton St, Austin, TX 78712 USA
| | - Dipankar Behera
- Department of Mechanical Engineering, The University of Texas at Austin, 204 E. Dean Keeton St, Austin, TX 78712 USA
| | - Obehi G. Dibua
- Department of Mechanical Engineering, The University of Texas at Austin, 204 E. Dean Keeton St, Austin, TX 78712 USA
| | - Chee S. Foong
- NXP Semiconductors, 6501W William Cannon Dr, Austin, TX 78735 US
| | - Michael A. Cullinan
- Department of Mechanical Engineering, The University of Texas at Austin, 204 E. Dean Keeton St, Austin, TX 78712 USA
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20
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Synthesis, characterization and pharmacological potential of green synthesized copper nanoparticles. Bioprocess Biosyst Eng 2019; 42:1769-1777. [DOI: 10.1007/s00449-019-02173-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/23/2019] [Accepted: 07/11/2019] [Indexed: 10/26/2022]
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Chen C, Cheng S, Shi T, Zhong Y, Huang Y, Li J, Liao G, Tang Z. Size Distribution Control of Copper Nanoparticles and Oxides: Effect of Wet-Chemical Redox Cycling. Inorg Chem 2019; 58:2533-2542. [PMID: 30702867 DOI: 10.1021/acs.inorgchem.8b03125] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work, we studied the effect of liquid-phase redox cycling on the size of Cu nanoparticles and oxides. The mixed solution of sodium hydroxide and ammonium persulfate was applied as the oxidation system at room temperature, and ascorbic acid was used as reduction agent at 80 °C in the cycling process. It was found that pristine copper particles with average size of around 800 nm and wide distribution from 300 to 1300 nm could be turned into the resulting particles with the average size of around 162.3 nm with the distribution from 75 to 250 nm after 5 redox cycles. It was also observed that uniform copper oxide nanowires formed after 5 oxidation cycles could be easily reduced into fine copper nanoparticles. The critical tuning factors including the precursor size, morphology, defects, reaction time, and the way of adding oxidant were investigated. It was suggested that the synergetic driving effect of chemical reduction and nanostructure thermodynamic instability in solution accounted for the size reformation of the copper nanoparticles. This proposed method of size-shrinking could be developed as a general strategy for large-scale tuning the properties of copper nanoparticles for wide applications and extended to other metal particles as well.
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22
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Luo W, Charara M, Saha MC, Liu Y. Fabrication and characterization of porous CNF/PDMS nanocomposites for sensing applications. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-00958-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Pandian PM, Pandurangan A. Copper nanoparticles anchored onto boron-doped graphene nanosheets for use as a high performance asymmetric solid-state supercapacitor. RSC Adv 2019; 9:3443-3461. [PMID: 35548687 PMCID: PMC9088218 DOI: 10.1039/c8ra08762h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/03/2019] [Indexed: 12/19/2022] Open
Abstract
There is a high demand for high energy and power density in the field of energy storage devices. To rectify these limitations, a novel asymmetric solid-state supercapacitor (ASSC) was designed and fabricated using a copper anchored boron doped graphene nanosheet (CuBG) as a negative electrode and reduced graphene nanoplatelets as a positive electrode with H2SO4/PVA as the quasi-solid electrolyte. The CuBG was prepared using a two step hydrothermal process followed by pyrolysis at different temperatures using chemical vapour deposition (CVD), using copper sulphate (CuSO4) and boron-trioxide (B2O3) as precursors, for doping in graphene oxide. Owing to the remarkable structure and morphology of Cu nanoparticles on nanosheets of boron intercalated with graphene oxide, the nanosheets exhibit a high specific capacitance of 483 Fg-1 at 1 Ag-1 with a capacitance retention of 96% after 5000 cycles, respectively, in a two-electrode system. In addition, the designed and fabricated solid state ASSC device of rGO//CuBG exhibited a high energy and power density of 132.5 W h kg-1 and 1000 W kg-1, respectively, in a wide potential window of 2.0 V, with an excellent stability, retaining 91% of its initial specific capacitance after 5000 cycles. The electrochemical capacitance of CuBG was also evaluated in a three and two electrode system using a KOH and KOH/PVA solid electrolyte respectively. A specific capacitance of 87.5 Fg-1 was achieved at 1 Ag-1 using the fabricated asymmetric device with a 31.1 W h kg-1 energy density at a corresponding power density of 800 W kg-1 and an 85% capacitance was retained after 5000 cycles. The kinetics of the interfacial charge transport phenomena were analysed using a Nyquist plot of the electrochemical impedance analysis.
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Affiliation(s)
- P Muthu Pandian
- Department of Chemistry, Anna University Chennai 600 025 Tamil Nadu India +91 44 22200660 +91 44 22358653
| | - A Pandurangan
- Department of Chemistry, Anna University Chennai 600 025 Tamil Nadu India +91 44 22200660 +91 44 22358653
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24
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Phytotoxic and Genotoxic Effects of Copper Nanoparticles in Coriander ( Coriandrum sativum-Apiaceae). PLANTS 2019; 8:plants8010019. [PMID: 30646494 PMCID: PMC6358933 DOI: 10.3390/plants8010019] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 12/30/2018] [Accepted: 01/05/2019] [Indexed: 12/13/2022]
Abstract
Engineered metal nanoparticles have been widely used in several applications that may lead to increased exposure to the environment. In this study, we assessed the phytotoxic effect of various concentrations of copper nanoparticles CuNP, (200, 400 and 800 mg/L) on coriander (Coriandrum sativum) plants grown hydroponically. C. sativum plants treated with CuNP demonstrated decreased biomass and root length in comparison to control untreated plants. Additionally, decreased levels of photosynthetic pigments (chlorophyll a and b) were also seen in C. sativum plants treated with CuNP, as well as damage to the C. sativum root plasma membrane as demonstrated by Evan’s blue dye and increased electrolyte leakage. Moreover, our results exhibited increased levels of H2O2 and MDA on C. Sativum plants treated with CuNP. X-Ray Fluorescence (XRF) analysis confirmed that C. sativum treated with CuNP accumulated the latter in plant root tissues. Random amplified polymorphic DNA (RAPD) analysis confirmed the genotoxic effect of CuNP, which altered the C. sativum genome. This was shown by the different banding pattern of RAPD. Overall, our results exhibited that CuNP is toxic to C. sativum plants.
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25
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Buss L, Meierhofer F, Bianchi Neto P, França Meier H, Fritsching U, Noriler D. Impact of co-flow on the spray flame behaviour applied to nanoparticle synthesis. CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.23386] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lizoel Buss
- Process & Chemical Engineering Division; Leibniz Institute for Materials Engineering IWT; Bremen, HB Germany
- Department of Chemical Engineering; University of Blumenau; Blumenau, SC Brazil
| | - Florian Meierhofer
- Process & Chemical Engineering Division; Leibniz Institute for Materials Engineering IWT; Bremen, HB Germany
| | - Pedro Bianchi Neto
- Department of Chemical Engineering; University of Blumenau; Blumenau, SC Brazil
| | - Henry França Meier
- Process & Chemical Engineering Division; Leibniz Institute for Materials Engineering IWT; Bremen, HB Germany
| | - Udo Fritsching
- Process & Chemical Engineering Division; Leibniz Institute for Materials Engineering IWT; Bremen, HB Germany
- Department of Particles and Process Engineering; University of Bremen; Bremen, HB Germany
| | - Dirceu Noriler
- School of Chemical Engineering; University of Campinas; SP, Brazil
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26
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Khashan KS, Jabir MS, Abdulameer FA. Preparation and characterization of copper oxide nanoparticles decorated carbon nanoparticles using laser ablation in liquid. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1742-6596/1003/1/012100] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Taheri Kal-Kashvandi A, M. Heravi M, Ahmadi S, Hosseinnejad T. Copper Nanoparticles in Polyvinyl Alcohol–Acrylic Acid Matrix: An Efficient Heterogeneous Catalyst for the Regioselective Synthesis of 1,4-Disubstituted 1,2,3-Triazoles via Click Reaction. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0811-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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28
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Hofer CJ, Grass RN, Schneider EM, Hendriks L, Herzog AF, Zeltner M, Günther D, Stark WJ. Water dispersible surface-functionalized platinum/carbon nanorattles for size-selective catalysis. Chem Sci 2018; 9:362-367. [PMID: 29629105 PMCID: PMC5868313 DOI: 10.1039/c7sc03785f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 10/27/2017] [Indexed: 12/12/2022] Open
Abstract
Selective dealloying of metal nanoparticles results in rattle-type hollow carbon nanoshells enclosing platinum nanoparticles, which are able to perform size-selective catalysis. Selective functionalization of the outer graphene-like carbon surface prevents agglomeration and leads to well dispersible nanocatalysts in aqueous solutions. The synthesis starts with the production of nanoparticles with a cobalt-platinum-alloy core surrounded by graphene-like carbon via reducing flame spray synthesis. After surface functionalization, simultaneous pore formation in the shell-wall and dissolution of the cobalt results in platinum encapsulated in hollow carbon nanospheres. Catalytic oxidation of differently sized sugars (glucose and maltoheptaose) reveales size-selective catalytic properties of these platinum nanorattles.
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Affiliation(s)
- Corinne J Hofer
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Robert N Grass
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Elia M Schneider
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Lyndsey Hendriks
- Laboratory of Inorganic Chemistry , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland
| | - Antoine F Herzog
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Martin Zeltner
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
| | - Detlef Günther
- Laboratory of Inorganic Chemistry , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland
| | - Wendelin J Stark
- Institute for Chemical and Bioengineering , ETH Zurich , Vladimir-Prelog-Weg 1 , 8093 Zurich , Switzerland .
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29
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Andreani T, Nogueira V, Pinto VV, Ferreira MJ, Rasteiro MG, Silva AM, Pereira R, Pereira CM. Influence of the stabilizers on the toxicity of metallic nanomaterials in aquatic organisms and human cell lines. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 607-608:1264-1277. [PMID: 28732404 DOI: 10.1016/j.scitotenv.2017.07.098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 07/11/2017] [Accepted: 07/11/2017] [Indexed: 06/07/2023]
Abstract
In this study, following a systematic approach, we used aquatic species (bacteria Vibrio fischeri and microalgae Raphidocelis subcapitata) and different human cell lines (Caco-2, HepG2, SV-80 and HaCaT) representing different tissues and exposure pathways, to investigate how two organic stabilizers (PVA and DMSO) used for NMs dispersion influence their physicochemical properties, the persistence of metals in suspension and the toxicity/ecotoxicity of two metallic NMs (nano-Ag and nano-Cu). Although the stabilizers are expected to contribute to improve the dispersion and stability of NMs, the results obtained clearly showed that no similar changes in toxicity and morphological properties of the nano-Ag can be expected after its stabilization with PVA. Thus, regarding human cell lines, the reduction in the average size of the PVA-nano-Ag was followed by a reduction or maintenance of its toxicity, but the opposite was observed for the aquatic species tested since an increase in the average size enhanced its toxicity. As far as nano-Cu is considered DMSO contributed for a better dispersion of this nanomaterial, however this was not translated in a similar toxicity/ecotoxicity modification. In summary, even for nano-Cu, for which few or no data exists regarding its toxicity after stabilization with organic compounds, it was confirmed with consistent data, that the toxicity of metallic NMs is a complex combination of average size, chemical composition, solubilization or persistence in suspension of the metallic forms, interaction with test medium components and sensitivity of test species and cell lines. The combination of all of these factors makes the toxicity of metallic NMs unpredictable and points for the need of an extensive evaluation of each new formulation.
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Affiliation(s)
- Tatiana Andreani
- Centro de Investigação em Química da Universidade do Porto, Departamento de Química e Bioquímica, Rua do Campo Alegre, 4169-007 Porto, Portugal; CITAB - Centre for Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, UTAD, Vila Real, Portugal.
| | - Verónica Nogueira
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; CIMAR - Interdisciplinary Center of Marine and Environmental Research, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - Vera V Pinto
- Centro de Investigação em Química da Universidade do Porto, Departamento de Química e Bioquímica, Rua do Campo Alegre, 4169-007 Porto, Portugal; Centro Tecnológico do Calçado de Portugal, Rua de Fundões - Devesa Velha, 3700-121 São João Madeira, Portugal
| | - Maria José Ferreira
- Centro Tecnológico do Calçado de Portugal, Rua de Fundões - Devesa Velha, 3700-121 São João Madeira, Portugal
| | - Maria Graça Rasteiro
- Department of Chemical Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
| | - Amélia M Silva
- CITAB - Centre for Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, UTAD, Vila Real, Portugal; Department of Biology and Environment, University of Tras-os-Montes e Alto Douro, UTAD, Quinta de Prados, P-5001-801 Vila Real, Portugal
| | - Ruth Pereira
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; CIMAR - Interdisciplinary Center of Marine and Environmental Research, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - Carlos M Pereira
- Centro de Investigação em Química da Universidade do Porto, Departamento de Química e Bioquímica, Rua do Campo Alegre, 4169-007 Porto, Portugal
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Green Synthesis of Copper Nanoparticles Using Alchornea laxiflora Leaf Extract and Their Catalytic Application for Oxidative Desulphurization of Model Oil. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE 2017. [DOI: 10.1007/s40995-017-0404-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Taran M, Rad M, Alavi M. Antibacterial Activity of Copper Oxide (CuO) Nanoparticles Biosynthesized by Bacillus sp. FU4: Optimization of Experiment Design. PHARMACEUTICAL SCIENCES 2017. [DOI: 10.15171/ps.2017.30] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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32
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Liu B, Shao Y, Xiang X, Zhang F, Yan S, Li W. Highly efficient one-step synthesis of carbon encapsulated nanocrystals by the oxidation of metal π-complexes. NANOTECHNOLOGY 2017; 28:325603. [PMID: 28614068 DOI: 10.1088/1361-6528/aa7995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Various carbon encapsulated nanocrystals, including MnS and MnO, Cr2O3, MoO2, Fe7S8 and Fe3O4, and ZrO2, are prepared in one step and in situ by a simple and highly efficient synthesis approach. The nanocrystals have an equiaxed morphology and a median size smaller than 30 nm. Tens and hundreds of these nanocrystals are entirely encapsulated by a wormlike amorphous carbon shell. The formation of a core-shell structure depends on the strongly exothermic reaction of metal π-complexes with ammonium persulfate in an autoclave at below 200 °C. During the oxidation process, the generated significant amounts of heat will destroy the molecular structure of the metal π-complex and cleave the ligands into small carbon fragments, which further transform into an amorphous carbon shell. The central metal atoms are oxidized to metal oxide/sulfide nanocrystals. The formation of a core-shell structure is independent of the numbers of ligands and carbon atoms as well as the metal types, implying that any metal π-complex can serve as a precursor and that various carbon encapsulated nanocrystals can be synthesized by this method.
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Affiliation(s)
- Boyang Liu
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, People's Republic of China
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Waser O, Brenner O, Groehn AJ, Pratsinis SE. Process Design for Size-Controlled Flame Spray Synthesis of Li4Ti5O12 and Electrochemical Performance. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/cpe-2017-0005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Inexpensive synthesis of electroceramic materials is required for efficient energy storage. Here the design of a scalable process, flame spray pyrolysis (FSP), for synthesis of size-controlled nanomaterials is investigated focusing on understanding the role of air entrainment (AE) during their aerosol synthesis with emphasis on battery materials. The AE into the enclosed FSP reactor is analysed quantitatively by computational fluid dynamics (CFD) and calculated temperatures are verified by Fourier transform infrared spectroscopy (FTIR). Various Li4Ti5O12 (LTO) particle compositions are made and characterized by N2 adsorption, electron microscopy and X-ray diffraction while the electrochemical performance of LTO is tested at various charging rates. Increasing AE decreases recirculation in the enclosing tube leading to lower reactor temperatures and particle concentrations by air dilution as well as shorter and narrower residence time distributions. As a result, particle growth by coagulation - coalescence decreases leading to smaller primary particles that are mostly pure LTO exhibiting high C-rate performance with more than 120 mAh/g galvanostatic specific charge at 40C, outperforming commercial LTO. The effect of AE on FSP-made particle characteristics is demonstrated also in combustion synthesis of LiFePO4 and ZrO2.
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35
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Chawla M, Randhawa JK, Siril PF. Calcination temperature as a probe to tune the non-enzymatic glucose sensing activity of Cu–Ni bimetallic nanocomposites. NEW J CHEM 2017. [DOI: 10.1039/c6nj03920k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A seven-fold increase in the glucose sensing activity of CuO–NiO bimetallic nanocomposites was induced via calcination.
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Affiliation(s)
- Mohit Chawla
- Advanced Materials Research Centre
- School of Basic Sciences
- Indian Institute of Technology Mandi
- Mandi
- India
| | | | - Prem Felix Siril
- Advanced Materials Research Centre
- School of Basic Sciences
- Indian Institute of Technology Mandi
- Mandi
- India
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Li YF, Dong FX, Chen Y, Zhang XL, Wang L, Bi YG, Tian ZN, Liu YF, Feng J, Sun HB. As-grown graphene/copper nanoparticles hybrid nanostructures for enhanced intensity and stability of surface plasmon resonance. Sci Rep 2016; 6:37190. [PMID: 27872494 PMCID: PMC5131648 DOI: 10.1038/srep37190] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 10/26/2016] [Indexed: 11/08/2022] Open
Abstract
The transfer-free fabrication of the high quality graphene on the metallic nanostructures, which is highly desirable for device applications, remains a challenge. Here, we develop the transfer-free method by direct chemical vapor deposition of the graphene layers on copper (Cu) nanoparticles (NPs) to realize the hybrid nanostructures. The graphene as-grown on the Cu NPs permits full electric contact and strong interactions, which results in a strong localization of the field at the graphene/copper interface. An enhanced intensity of the localized surface plasmon resonances (LSPRs) supported by the hybrid nanostructures can be obtained, which induces a much enhanced fluorescent intensity from the dye coated hybrid nanostructures. Moreover, the graphene sheets covering completely and uniformly on the Cu NPs act as a passivation layer to protect the underlying metal surface from air oxidation. As a result, the stability of the LSPRs for the hybrid nanostructures is much enhanced compared to that of the bare Cu NPs. The transfer-free hybrid nanostructures with enhanced intensity and stability of the LSPRs will enable their much broader applications in photonics and optoelectronics.
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Affiliation(s)
- Yun-Fei Li
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Feng-Xi Dong
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Yang Chen
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Xu-Lin Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Lei Wang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Yan-Gang Bi
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Zhen-Nan Tian
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Yue-Feng Liu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Jing Feng
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
| | - Hong-Bo Sun
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
- College of Physics, Jilin University, 2699 Qianjin Street, Changchun, 130012, People’s Republic of China
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37
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Thermal evolution study of nonmetallic impurities and surface passivation of Cu nanopowders produced via a DC thermal plasma synthesis. ADV POWDER TECHNOL 2016. [DOI: 10.1016/j.apt.2016.05.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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38
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Hofer CJ, Grass RN, Zeltner M, Mora CA, Krumeich F, Stark WJ. Hollow Carbon Nanobubbles: Synthesis, Chemical Functionalization, and Container-Type Behavior in Water. Angew Chem Int Ed Engl 2016; 55:8761-5. [DOI: 10.1002/anie.201602745] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Corinne J. Hofer
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Robert N. Grass
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Martin Zeltner
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Carlos A. Mora
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Frank Krumeich
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
| | - Wendelin J. Stark
- Institute for Chemical and Bioengineering; ETH Zurich; Vladimir-Prelog-Weg 1 8093 Zurich Switzerland
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39
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Hofer CJ, Grass RN, Zeltner M, Mora CA, Krumeich F, Stark WJ. Kohlenstoff-Nanobläschen: Synthese, chemische Funktionalisierung und containerartiges Verhalten in Wasser. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Corinne J. Hofer
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Robert N. Grass
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Martin Zeltner
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Carlos A. Mora
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Frank Krumeich
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
| | - Wendelin J. Stark
- Institut für Chemie- und Bioingenieurwissenschaften; ETH Zürich; Vladimir-Prelog-Weg 1 8093 Zürich Schweiz
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40
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Kwon J, Cho H, Eom H, Lee H, Suh YD, Moon H, Shin J, Hong S, Ko SH. Low-Temperature Oxidation-Free Selective Laser Sintering of Cu Nanoparticle Paste on a Polymer Substrate for the Flexible Touch Panel Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11575-82. [PMID: 27128365 DOI: 10.1021/acsami.5b12714] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Copper nanomaterials suffer from severe oxidation problem despite the huge cost effectiveness. The effect of two different processes for conventional tube furnace heating and selective laser sintering on copper nanoparticle paste is compared in the aspects of chemical, electrical and surface morphology. The thermal behavior of the copper thin films by furnace and laser is compared by SEM, XRD, FT-IR, and XPS analysis. The selective laser sintering process ensures low annealing temperature, fast processing speed with remarkable oxidation suppression even in air environment while conventional tube furnace heating experiences moderate oxidation even in Ar environment. Moreover, the laser-sintered copper nanoparticle thin film shows good electrical property and reduced oxidation than conventional thermal heating process. Consequently, the proposed selective laser sintering process can be compatible with plastic substrate for copper based flexible electronics applications.
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Affiliation(s)
- Jinhyeong Kwon
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Hyunmin Cho
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Hyeonjin Eom
- Surface Technology R&BD Group, Korea Institute of Industrial Technology (KITECH) , 156 Gaetbeol-ro, Yeonsu-gu, Incheon, 21999, Korea
| | - Habeom Lee
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Young Duk Suh
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Hyunjin Moon
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Jaeho Shin
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Sukjoon Hong
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Seung Hwan Ko
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
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41
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Guo M, Zhao Y, Zhang F, Xu L, Yang H, Song X, Bu Y. Reduced graphene oxide-stabilized copper nanocrystals with enhanced catalytic activity and SERS properties. RSC Adv 2016. [DOI: 10.1039/c6ra05186c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The as-obtained Cu/rGO hybrids possess excellent air stability, a higher catalytic efficiency to the reduction of p-nitrophenol and exhibit surface-enhanced Raman scattering activity.
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Affiliation(s)
- Meizhen Guo
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- P. R. China
| | - Youcheng Zhao
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- P. R. China
| | - Fengying Zhang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- P. R. China
| | - Li Xu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- P. R. China
| | - Hongfang Yang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- P. R. China
| | - Xinyu Song
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- P. R. China
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- P. R. China
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43
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Viswan A, Chou H, Sakudo A, Nagatsu M. Bioconjugation efficiency of plasma-functionalized carbon-encapsulated iron nanoparticles with biotin–avidin system. Biomed Phys Eng Express 2015. [DOI: 10.1088/2057-1976/1/4/045104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Dual yolk-shell structure of carbon and silica-coated silicon for high-performance lithium-ion batteries. Sci Rep 2015; 5:10908. [PMID: 26039972 PMCID: PMC4454089 DOI: 10.1038/srep10908] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 05/05/2015] [Indexed: 12/23/2022] Open
Abstract
Silicon batteries have attracted much attention in recent years due to their high theoretical capacity, although a rapid capacity fade is normally observed, attributed mainly to volume expansion during lithiation. Here, we report for the first time successful synthesis of Si/void/SiO2/void/C nanostructures. The synthesis strategy only involves selective etching of SiO2in Si/SiO2/C structures with hydrofluoric acid solution. Compared with reported results, such novel structures include a hard SiO2-coated layer, a conductive carbon-coated layer, and two internal void spaces. In the structures, the carbon can enhance conductivity, the SiO2layer has mechanically strong qualities, and the two internal void spaces can confine and accommodate volume expansion of silicon during lithiation. Therefore, these specially designed dual yolk-shell structures exhibit a stable and high capacity of 956 mA h g−1 after 430 cycles with capacity retention of 83%, while the capacity of Si/C core-shell structures rapidly decreases in the first ten cycles under the same experimental conditions. The novel dual yolk-shell structures developed for Si can also be extended to other battery materials that undergo large volume changes.
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45
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Polukhin VA, Vatolin NA. Stability and thermal evolution of transition metal and silicon clusters. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4411] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Kim C, Lee G, Rhee C, Lee M. Expeditious low-temperature sintering of copper nanoparticles with thin defective carbon shells. NANOSCALE 2015; 7:6627-6635. [PMID: 25794325 DOI: 10.1039/c5nr00956a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The realization of air-stable nanoparticles, well-formulated nanoinks, and conductive patterns based on copper is a great challenge in low-cost and large-area flexible printed electronics. This work reports the synthesis of a conductively interconnected copper structure via thermal sintering of copper inks at a low temperature for a short period of time, with the help of thin defective carbon shells coated onto the copper nanoparticles. Air-stable copper/carbon core/shell nanoparticles (typical size ∼23 nm, shell thickness ∼1.0 nm) are prepared by means of an electric explosion of wires. Gaseous oxidation of the carbon shells with a defective structure occurs at 180 °C, impacting the choice of organic solvents as well as the sintering conditions to create a crucial neck formation. Isothermal oxidation and reduction treatment at 200 °C for only about 10 min yields an oxide-free copper network structure with an electrical resistivity of 25.1 μΩ cm (14.0 μΩ cm at 250 °C). Finally, conductive copper line patterns are achieved down to a 50 μm width with an excellent printing resolution (standard deviation ∼4.0%) onto a polyimide substrate using screen printing of the optimized inks.
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Affiliation(s)
- Changkyu Kim
- Nuclear Materials Development Division, Korea Atomic Energy Research Institute, Daeduk-daero, Dukjin-dong, Yuseong-gu, Daejeon 305-353, Republic of Korea.
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48
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Mukasyan AS, Manukyan KV. Combustion/micropyretic synthesis of atomically thin two-dimensional materials for energy applications. Curr Opin Chem Eng 2015. [DOI: 10.1016/j.coche.2014.08.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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49
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Catalytic and fluorescence studies with copper nanoparticles synthesized in polysorbates of varying hydrophobicity. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.11.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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50
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Hussain N, Gogoi P, Azhaganand VK, Shelke MV, Das MR. Green synthesis of stable Cu(0) nanoparticles onto reduced graphene oxide nanosheets: a reusable catalyst for the synthesis of symmetrical biaryls from arylboronic acids under base-free conditions. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01229a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Cu(0) nanoparticle-rGO composites exhibit excellent catalytic activity for the synthesis of symmetrical biaryls from arylboronic acids under microwave irradiation.
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Affiliation(s)
- Najrul Hussain
- Materials Science Division
- CSIR-North East Institute of Science and Technology
- Jorhat-785006
- India
- Academy of Scientific and Innovative Research
| | - Pranjal Gogoi
- Medicinal Chemistry Division
- CSIR-North East Institute of Science and Technology
- Jorhat-785006
- India
- Academy of Scientific and Innovative Research
| | - Vedi Kuyil Azhaganand
- Physical and Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Manjusha V. Shelke
- Physical and Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
- Academy of Scientific and Innovative Research
| | - Manash R. Das
- Materials Science Division
- CSIR-North East Institute of Science and Technology
- Jorhat-785006
- India
- Academy of Scientific and Innovative Research
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