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Fialkova S, Yarmolenko S, Krishnaswamy A, Sankar J, Shanov V, Schulz MJ, Desai S. Nanoimprint Lithography for Next-Generation Carbon Nanotube-Based Devices. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1011. [PMID: 38921886 PMCID: PMC11206719 DOI: 10.3390/nano14121011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/18/2024] [Accepted: 06/05/2024] [Indexed: 06/27/2024]
Abstract
This research reports the development of 3D carbon nanostructures that can provide unique capabilities for manufacturing carbon nanotube (CNT) electronic components, electrochemical probes, biosensors, and tissue scaffolds. The shaped CNT arrays were grown on patterned catalytic substrate by chemical vapor deposition (CVD) method. The new fabrication process for catalyst patterning based on combination of nanoimprint lithography (NIL), magnetron sputtering, and reactive etching techniques was studied. The optimal process parameters for each technique were evaluated. The catalyst was made by deposition of Fe and Co nanoparticles over an alumina support layer on a Si/SiO2 substrate. The metal particles were deposited using direct current (DC) magnetron sputtering technique, with a particle ranging from 6 nm to 12 nm and density from 70 to 1000 particles/micron. The Alumina layer was deposited by radio frequency (RF) and reactive pulsed DC sputtering, and the effect of sputtering parameters on surface roughness was studied. The pattern was developed by thermal NIL using Si master-molds with PMMA and NRX1025 polymers as thermal resists. Catalyst patterns of lines, dots, and holes ranging from 70 nm to 500 nm were produced and characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Vertically aligned CNTs were successfully grown on patterned catalyst and their quality was evaluated by SEM and micro-Raman. The results confirm that the new fabrication process has the ability to control the size and shape of CNT arrays with superior quality.
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Affiliation(s)
- Svitlana Fialkova
- NSF Engineering Research Center for Revolutionizing Metallic Biomaterials, North Carolina A&T State University, Greensboro, NC 27411, USA; (S.F.); (S.Y.); (J.S.)
| | - Sergey Yarmolenko
- NSF Engineering Research Center for Revolutionizing Metallic Biomaterials, North Carolina A&T State University, Greensboro, NC 27411, USA; (S.F.); (S.Y.); (J.S.)
| | - Arvind Krishnaswamy
- College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, OH 45221, USA; (A.K.); (V.S.); (M.J.S.)
| | - Jagannathan Sankar
- NSF Engineering Research Center for Revolutionizing Metallic Biomaterials, North Carolina A&T State University, Greensboro, NC 27411, USA; (S.F.); (S.Y.); (J.S.)
- Center for Excellence in Product Design and Advanced Manufacturing, North Carolina A & T State University, Greensboro, NC 27411, USA
| | - Vesselin Shanov
- College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, OH 45221, USA; (A.K.); (V.S.); (M.J.S.)
| | - Mark J. Schulz
- College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, OH 45221, USA; (A.K.); (V.S.); (M.J.S.)
| | - Salil Desai
- NSF Engineering Research Center for Revolutionizing Metallic Biomaterials, North Carolina A&T State University, Greensboro, NC 27411, USA; (S.F.); (S.Y.); (J.S.)
- Center for Excellence in Product Design and Advanced Manufacturing, North Carolina A & T State University, Greensboro, NC 27411, USA
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2
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Grabarczyk M, Wlazłowska E, Wawruch A. Stripping Voltammetry with Nanomaterials-based Electrode in the Environmental Analysis of Trace Concentrations of Tin. Chemphyschem 2024; 25:e202300633. [PMID: 37921492 DOI: 10.1002/cphc.202300633] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/04/2023]
Abstract
A method for the voltammetric determination of tin using a multiwall carbon nanotubes/spherical glassy carbon (CNTs/SGC) electrode is described. The new procedure is based on the adsorptive accumulation of the Sn(II)-cupferron complex on a CNTs/SGC electrode modified with a lead film, followed by electrochemical reduction of the adsorbed species. The optimal experimental conditions include the use of 0.10 mol L-1 acetate buffer (pH 5.7), 4.0×10-4 M cupferron and 1.0×10-4 M Pb(II). The peak current is proportional to the concentration of Sn(II) over the range of 1.0×10-9 -1.0×10-7 M and the detection limit is 3.1×10-10 M for a 95 s accumulation time. The proposed method was used to determine tin in real samples and certified reference materials.
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Affiliation(s)
- Malgorzata Grabarczyk
- Department of Analytical Chemistry, Institution of Chemical Sciences, Maria Curie-Sklodowska University, 20-031, Lublin, Poland
| | - Edyta Wlazłowska
- Department of Analytical Chemistry, Institution of Chemical Sciences, Maria Curie-Sklodowska University, 20-031, Lublin, Poland
| | - Agnieszka Wawruch
- Department of Analytical Chemistry, Institution of Chemical Sciences, Maria Curie-Sklodowska University, 20-031, Lublin, Poland
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Basma REMOUGUI C, BRAHIMI N, MOUMENI H, NEMAMCHA A. Structural, electronic, nonlinear optical properties and spectroscopic study of noble metals doped C60 fullerene using M06-2X. COMPUT THEOR CHEM 2023. [DOI: 10.1016/j.comptc.2023.114114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Tiwari S, Lochab A, Jindal K, Saxena R. Determination of Chromium in Contaminated Water Samples Using Chemically Modified Nanoadsorbent: A Computational and Experimental Study. ChemistrySelect 2023. [DOI: 10.1002/slct.202203316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- Shelja Tiwari
- Department of Chemistry Kirori Mal College University of Delhi Delhi 110007 India
| | - Amit Lochab
- Department of Chemistry Kirori Mal College University of Delhi Delhi 110007 India
| | - Kajal Jindal
- Department of Physics Kirori Mal College University of Delhi Delhi 110007 India
| | - Reena Saxena
- Department of Chemistry Kirori Mal College University of Delhi Delhi 110007 India
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Qasim M, Clarkson AN, Hinkley SFR. Green Synthesis of Carbon Nanoparticles (CNPs) from Biomass for Biomedical Applications. Int J Mol Sci 2023; 24:ijms24021023. [PMID: 36674532 PMCID: PMC9863453 DOI: 10.3390/ijms24021023] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 01/07/2023] Open
Abstract
In this review, we summarize recent work on the "green synthesis" of carbon nanoparticles (CNPs) and their application with a focus on biomedical applications. Recent developments in the green synthesis of carbon nanoparticles, from renewable precursors and their application for environmental, energy-storage and medicinal applications are discussed. CNPs, especially carbon nanotubes (CNTs), carbon quantum dots (CQDs) and graphene, have demonstrated utility as high-density energy storage media, environmental remediation materials and in biomedical applications. Conventional fabrication of CNPs can entail the use of toxic catalysts; therefore, we discuss low-toxicity manufacturing as well as sustainable and environmentally friendly methodology with a focus on utilizing readily available biomass as the precursor for generating CNPs.
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Affiliation(s)
- Muhammad Qasim
- Department of Anatomy, Brain Health Research Centre and Brain Research New Zealand, University of Otago, Dunedin 9054, New Zealand
| | - Andrew N. Clarkson
- Department of Anatomy, Brain Health Research Centre and Brain Research New Zealand, University of Otago, Dunedin 9054, New Zealand
- Correspondence: (A.N.C.); (S.F.R.H.); Tel.: +64-3-279-7326 (A.N.C.); +64-4-463-0052 (S.F.R.H)
| | - Simon F. R. Hinkley
- Ferrier Research Institute, Victoria University of Wellington, Wellington 5012, New Zealand
- Correspondence: (A.N.C.); (S.F.R.H.); Tel.: +64-3-279-7326 (A.N.C.); +64-4-463-0052 (S.F.R.H)
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Chen Y, Wang X, Lin H, Vogel F, Li W, Cao L, Lin Z, Zhang P. Low-density polyethylene-derived carbon nanotubes from express packaging bags waste as electrode material for supercapacitors. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Facile Synthesis of ZIF-67 for the Adsorption of Methyl Green from Wastewater: Integrating Molecular Models and Experimental Evidence to Comprehend the Removal Mechanism. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238385. [PMID: 36500484 PMCID: PMC9735897 DOI: 10.3390/molecules27238385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/13/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022]
Abstract
Organic dyes with enduring colors which are malodorous are a significant source of environmental deterioration due to their virulent effects on aquatic life and lethal carcinogenic effects on living organisms. In this study, the adsorption of methyl green (MG), a cationic dye, was achieved by using ZIF-67, which has been deemed an effective adsorbent for the removal of contaminants from wastewater. The characterization of ZIF-67 was done by FTIR, XRD, and SEM analysis. The adsorption mechanism and characteristics were investigated with the help of control batch experiments and theoretical studies. The systematical kinetic studies and isotherms were sanctioned with a pseudo-second-order model and a Langmuir model (R2 = 0.9951), confirming the chemisorption and monolayer interaction process, respectively. The maximum removal capacities of ZIF-67 for MG was 96% at pH = 11 and T = 25 °C. DFT calculations were done to predict the active sites in MG by molecular electrostatic potential (MEP). Furthermore, both Molecular dynamics and Monte Carlo simulations were also used to study the adsorption mechanism.
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Gubbi Shivarathri P, Rajappa S, Kalenahally Swamygowda D, Chattanahalli Devendrachari M, Makri Nimbegondi Kotresh H. Green mechanochemical route for the synthesis of carboxy-rich polyaniline/multiwalled carbon nanotubes composite as a competent adsorbent for cationic dyes. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2135541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Poornima Gubbi Shivarathri
- Department of Chemistry, Acharya Institute of Technology, Bangalore, India
- Department of Chemistry, New Horizon College of Engineering, Bangalore, India
| | - Shwetha Rajappa
- Department of Chemistry, Acharya Institute of Technology, Bangalore, India
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Abstract
Carbon nanotubes (CNTs) have long been at the forefront of materials research, with applications ranging from composites for increased tensile strength in construction and sports equipment to transistor switches and solar cell electrodes in energy applications. There remains untapped potential still when it comes to energy and data transmission, with our group having previously demonstrated a working ethernet cable composed of CNT fibers. Material composition, electrical resistance, and electrical capacitance all play a strong role in the making of high-quality microphone and headphone cables, and the work herein describes the formation of a proof-of-concept CNT audio cable. Testing was done compared to commercial cables, with frequency response measurements performed for further objective testing. The results show performance is on par with commercial cables, and the CNTs being grown from waste plastics as a carbon source further adds to the value proposition, while also being environmentally friendly.
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Gangoli VS, Mahy T, Yick T, Niu Y, Palmer RE, Orbaek White A. Upcycling of face masks to application-rich multi- and single-walled carbon nanotubes. CARBON LETTERS 2022; 32:1681-1688. [PMCID: PMC9523627 DOI: 10.1007/s42823-022-00398-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/22/2022] [Accepted: 08/08/2022] [Indexed: 06/19/2023]
Abstract
We report the use of face mask materials as a carbon precursor for the synthesis of multi- and single-walled carbon nanotubes (CNTs) in an open-loop chemical recycling process. Novel surgical mask precursors were suspended in toluene and injected into a chemical vapor deposition reactor previously optimized for CNT production using liquid injection. The CNTs were collected and characterized using resonant Raman spectroscopy, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) before being turned into fibrils that were tested for electrical conductance. Once confirmed and repeated for statistical accuracy, a CNT-based Ethernet cable was manufactured and tested using iPerf3 for uplink and downlink speeds exceeding broadband standards worldwide. Radial breathing modes from Raman spectroscopy indicate single walled CNTs (SWCNTs) with diameters ranging from 0.8 to 1.55 nm and this matches well with TEM observations of SWCNTs with 1.5 nm diameter. This work pushes the horizon of feedstocks useful for CNT and SWCNT production in particular; this work demonstrates upcycling of materials fated for disposal into materials with positive net value and plenty of real-world applications.
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Affiliation(s)
- Varun Shenoy Gangoli
- Energy Safety Research Institute, Swansea University Bay Campus, Swansea, SA1 8EN UK
- Department of Chemical Engineering, Swansea University Bay Campus, Swansea, SA1 8EN UK
| | - Thomas Mahy
- Energy Safety Research Institute, Swansea University Bay Campus, Swansea, SA1 8EN UK
| | - Tim Yick
- Energy Safety Research Institute, Swansea University Bay Campus, Swansea, SA1 8EN UK
| | - Yubiao Niu
- Nanomaterials Lab, Mechanical Engineering, Faculty of Science and Engineering, Swansea University, Bay Campus, Swansea, SA1 8EN UK
| | - Richard E. Palmer
- Nanomaterials Lab, Mechanical Engineering, Faculty of Science and Engineering, Swansea University, Bay Campus, Swansea, SA1 8EN UK
| | - Alvin Orbaek White
- Energy Safety Research Institute, Swansea University Bay Campus, Swansea, SA1 8EN UK
- Department of Chemical Engineering, Swansea University Bay Campus, Swansea, SA1 8EN UK
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Kanu NJ, Bapat S, Deodhar H, Gupta E, Singh GK, Vates UK, Verma GC, Pandey V. An Insight into Processing and Properties of Smart Carbon Nanotubes Reinforced Nanocomposites. SMART SCIENCE 2021. [DOI: 10.1080/23080477.2021.1972913] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Nand Jee Kanu
- Mechanical Engineering, S. V. National Institute of Technology, Surat, India
- Mechanical Engineering, JSPM Narhe Technical Campus, Pune, India
| | - Saurabh Bapat
- Mechanical Engineering, JSPM Narhe Technical Campus, Pune, India
| | - Harshad Deodhar
- Mechanical Engineering, JSPM Narhe Technical Campus, Pune, India
| | - Eva Gupta
- Electrical Engineering, ASET, Amity University, Noida, India
- Electrical Engineering, TSSM’s Bhivrabai Sawant College of Engineering and Research, Pune, India
| | - Gyanendra Kumar Singh
- Mechanical Design and Manufacturing Engineering, Adama Science and Technology University, Adama, Ethiopia
| | | | - Girish C. Verma
- Mechanical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Vivek Pandey
- Thermal and Aerospace Engineering, Adama Science and Technology University, Adama, Ethiopia
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