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Wang J, Sun S, Li X, Fei G, Wang Z, Xia H. Selective Laser Sintering of Polydimethylsiloxane Composites. 3D PRINTING AND ADDITIVE MANUFACTURING 2023; 10:684-696. [PMID: 37609593 PMCID: PMC10440645 DOI: 10.1089/3dp.2021.0105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Conductive silicone elastomer carbon nanotubes (CNTs) composites possess potential applications in a variety of fields, including electronic skin, wearable electronics, and human motion detection. Based on a novel self-made covalent adaptable network (CANs) of polydimethylsiloxane (PDMS) containg dynamic steric-hindrance pyrazole urea bond (PDMS-CANs), CNTs wrapped PDMS-CANs (CNTs@PDMS-CANs) powders were prepared by a liquid phase adsorption and deposition, and were successfully used for selective laser sintering (SLS) three-dimensional printing. SLS-printed PDMS-CANs/CNTs nanocomposites possess high electrical conductivity and low percolation threshold as SLS is one kind of quasi-static processing, which leads to the formation of conductive segregated CNTs network by using the PDMS powders with special CNTs wrapped structure. The introduction of dynamic pyrazole urea bond endows the materials self-healing capability under electrothermal and photothermal stimulus. In addition, due to the resistance difference of the damaged and intact areas, crack diagnosing can be realized by infrared thermograph under electricity. In an application demonstration in strain sensor, the composite exhibits a regular cyclic electrical resistance change at cyclic compression and bending, indicating a relative high reliability.
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Affiliation(s)
- Jinzhi Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, China
| | - Shaojie Sun
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, China
| | - Xue Li
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, China
| | - Guoxia Fei
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, China
| | - Zhanhua Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, China
| | - Hesheng Xia
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, China
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Al-Harbi N, Hussein MA, Al-Hadeethi Y, Felimban RI, Tayeb HH, Bedaiwi NMH, Alosaimi AM, Bekyarova E, Chen M. Bioactive hybrid membrane-based cellulose acetate/bioactive glass/hydroxyapatite/carbon nanotubes nanocomposite for dental applications. J Mech Behav Biomed Mater 2023; 141:105795. [PMID: 37001249 DOI: 10.1016/j.jmbbm.2023.105795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/28/2023]
Abstract
The present work aimed to fabricate a set of hybrid bioactive membrane in the form of bio-nanocomposite films for dental applications using the casting dissolution procedures. The formulation of the targeted materials was consisting of cellulose acetate/bioactive glass/hydroxyapatite/carbon nanotubes with a general abbreviation CA-HAP-BG-SWCNTs. The nanocomposites were characterized using XRD, FTIR, SEM-EDX and Raman spectroscopy. XRD, FTIR and SEM characters confirm the nanocomposites formation with good compatibility. The fabricated materials had a semi crystalline structure. The mechanical and thermal properties, as well as contact angle and bioactivity of the fabricated nanocomposites were investigated. The SEM images for showed beehive-like architectures with a thicker frame for the second material. All fabricated materials showed good thermal behaviors. Furthermore, the agar diffusion antimicrobial study showed that the prepared nanocomposites do not exhibit an antibacterial activity against five pathogenic bacterial strains. Additionally, cytotoxicity of a dental nanocomposite filling agent was evaluated. Vero normal cells were incubated with test materials for 72h at 37 °C and 5% CO2. Cell viability was detected using a SRB assay. All nanocomposites were mildly to non-cytotoxic to Vero cells at high concentration in contrast to the inhibitory effect of doxorubicin which was added at 10-fold lower concertation than the nanocomposites. Hence, the proposed nanocomposite is promising candidates for dental applications.
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Affiliation(s)
- Nuha Al-Harbi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Kingdom of Saudi Arabia; Department of Physics, Umm AL-Qura University, Makkah, Saudi Arabia
| | - Mahmoud A Hussein
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71516, Egypt.
| | - Yas Al-Hadeethi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - Raed I Felimban
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; 3D Bioprinting Unit, Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hossam H Tayeb
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; Nanomedicine Unit, Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Nada M H Bedaiwi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Kingdom of Saudi Arabia; Department of Physics, University of Tabuk, Duba University College, Tabuk, 71491, Kingdom of Saudi Arabia
| | - Abeer M Alosaimi
- Department of Chemistry, Faculty of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Elena Bekyarova
- Department of Chemical & Environmental Engineering, Center for Nanoscale Science and Engineering, University California Riverside, Riverside, CA, 92521, USA
| | - Mingguag Chen
- Physical Secience and Enginerring Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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Electrochemically Activated CNT Sheet as a Cathode for Zn-CO2 Batteries. Int J Mol Sci 2022; 23:ijms232012602. [PMID: 36293460 PMCID: PMC9604323 DOI: 10.3390/ijms232012602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 11/17/2022] Open
Abstract
High demand for electrochemical storage devices is increasing the need for high-performance batteries. A Zn-CO2 battery offers a promising solution for CO2 reduction as well as energy storage applications. For this study, a Zn-CO2 battery was fabricated using a Carbon Nanotube (CNT) sheet as a cathode and a Zn plate as an anode. The electrochemical activation technique was used to increase the surface area of the CNT electrode by roughly 4.5 times. Copper (Cu) as a catalyst was then deposited onto the activated CNT electrode using electrodeposition method and different Cu loadings were investigated to optimize CO2 reduction. The final assembled Zn-CO2 battery has a 1.6 V output voltage at a current density of 0.063 mA/cm2, which is higher than most devices reported in the literature. This study demonstrates the importance of activation process which enabled more catalyst loading on the cathode resulted in additional active sites for electroreduction process. This paper presents the activated CNT sheet as a promising cathode material for Zn-CO2 batteries.
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Mousavi SF, Roein Z, Hekmatara SH. Multi-walled carbon nanotubes wrapped with polyvinylpyrrolidone can control the leaf yellowing of Alstroemeria cut flowers. Sci Rep 2022; 12:14232. [PMID: 35987917 PMCID: PMC9392740 DOI: 10.1038/s41598-022-18642-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 08/17/2022] [Indexed: 11/09/2022] Open
Abstract
The rapid yellowing of the leaves on cut flowers with leafy stems severely limits their vase life and commercial value. In this study, the effect of a composite of multi-walled carbon nanotubes (MWCNTs) and polyvinyl pyrrolidone (PVP) on the longevity of cut Alstroemeria flowers (Alstroemeria hybrida) was investigated to obtain a solution to this problem. A range of MWCNTs/PVP composite concentrations (0, 3, 6, and 9 mg L-1) was applied in a vase solution (for 24 h) as pulse treatments. Our findings indicate that the composite of MWCNTs and PVP exhibits excellent dispersibility in a vase solution. The results demonstrate that a 3 mg L-1 MWCNTs/PVP concentration was the most effective, extending the vase life of cut Alstroemeria flowers by up to 27 days. Pulsing with MWCNTs/PVP delayed the onset of floret abscission and leaf yellowing by 5 and 18 days, respectively. Additionally, when MWCNTs/PVP solution was applied to cut stems, water uptake remained consistently greater than that of the control. Additionally, MWCNTs/PVP increased the total chlorophyll content, soluble protein content, and POX enzyme activity of leaves while decreasing the malondialdehyde (MDA) content. The results indicate that this composite exhibited antimicrobial activity against gram-positive and -negative bacteria, particularly at a concentration of 3 mg L-1. This study demonstrated that adding MWCNTs/PVP to a vase solution of Alstroemeria cut flowers increased their longevity with minimal leaf yellowing symptoms compared to untreated cut stems. As a result, this nanocomposite can be used safely and effectively in vase solutions and in combination with other preservatives.
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Affiliation(s)
- Seyedeh Farzaneh Mousavi
- Department of Horticultural Sciences, Faculty of Agriculture, Ilam University, P.O. Box 69315-516, Ilam, Iran
| | - Zeynab Roein
- Department of Horticultural Sciences, Faculty of Agriculture, Ilam University, P.O. Box 69315-516, Ilam, Iran.
| | - Seyedeh Hoda Hekmatara
- Department of Physics, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
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Sheng J, Li Y. Applications of Carbon Nanotubes in Oxygen Electrocatalytic Reactions. ACS APPLIED MATERIALS & INTERFACES 2022; 14:20455-20462. [PMID: 34346228 DOI: 10.1021/acsami.1c08104] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Oxygen electrocatalytic reactions are essential for fuel cells and metal-air batteries. With their unique structure and properties, carbon nanotubes (CNTs) have found important applications in both oxygen reduction and evolution reactions. Herein, this perspective discusses the advantages and the recent progress of using CNTs as metal-free catalysts, catalyst supports, and free-standing electrodes in electrocatalysts. The future research directions and challenges toward the practical applications of CNT-based catalysts are highlighted.
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Affiliation(s)
- Jian Sheng
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yan Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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Tuning wettability and electrical conductivity of single-walled carbon nanotubes by the modified Hummers method. Sci Rep 2022; 12:4358. [PMID: 35288607 PMCID: PMC8921219 DOI: 10.1038/s41598-022-08343-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 03/01/2022] [Indexed: 11/29/2022] Open
Abstract
Partial oxidation of nanocarbon materials is one of the most straightforward methods to improve their compatibility with other materials, which widens its application potential. This work studied how the microstructure and properties of high crystallinity single-walled carbon nanotubes (SWCNTs) can be tailored by applying the modified Hummers method. The influence of temperature (0, 18, 40 °C), reaction time (0 min to 7 h), and the amount of KMnO4 oxidant was monitored. The results showed that depending on the oxidation conditions, the electronic characteristics of the material could be adjusted. After optimizing the parameters, the SWCNTs were much more conductive (1369 ± 84 S/cm with respect to 283 ± 32 S/cm for the untreated material). At the same time, the films made from them exhibited hydrophilic character of the surface (water contact angle changed from 71° to 27°).
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Removal of anionic and cationic dyes from wastewater by adsorption using multiwall carbon nanotubes. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.01.010] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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The production and application of carbon nanomaterials from high alkali silicate herbaceous biomass. Sci Rep 2020; 10:2563. [PMID: 32054919 PMCID: PMC7018825 DOI: 10.1038/s41598-020-59481-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 01/29/2020] [Indexed: 12/04/2022] Open
Abstract
Herein, value-added materials such as activated carbon and carbon nanotubes were synthesized from low-value Miscanthus × giganteus lignocellulosic biomass. A significant drawback of using Miscanthus in an energy application is the melting during the combustion due to its high alkali silicate content. An application of an alternative approach was proposed herein for synthesis of activated carbon from Miscanthus × giganteus, where the produced activated carbon possessed a high surface area and pore volume of 0.92 cm3.g−1 after two activation steps using phosphoric acid and potassium hydroxide. The SBET of the raw biomass, after first activation and second activation methods showed 17, 1142 and 1368 m2.g−1, respectively. Transforming this otherwise waste material into a useful product where its material properties can be utilized is an example of promoting the circular economy by valorising waste lignocellulosic biomass to widely sought-after high surface area activated carbon and subsequently, unconventional multi-walled carbon nanotubes. This was achieved when the activated carbon produced was mixed with nitrogen-based material and iron precursor, where it produced hydrophilic multi-wall carbon nanotubes with a contact angle of θ = 9.88°, compared to the raw biomass. synthesised materials were tested in heavy metal removal tests using a lead solution, where the maximum lead absorption was observed for sample AC-K, with a 90% removal capacity after the first hour of testing. The synthesis of these up-cycled materials can have potential opportunities in the areas of wastewater treatment or other activated carbon/carbon nanotube end uses with a rapid cycle time.
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Osman AI, Blewitt J, Abu-Dahrieh JK, Farrell C, Al-Muhtaseb AH, Harrison J, Rooney DW. Production and characterisation of activated carbon and carbon nanotubes from potato peel waste and their application in heavy metal removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:37228-37241. [PMID: 31745803 PMCID: PMC6937222 DOI: 10.1007/s11356-019-06594-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/24/2019] [Indexed: 06/04/2023]
Abstract
Herein, activated carbon (AC) and carbon nanotubes (CNTs) were synthesised from potato peel waste (PPW). Different ACs were synthesised via two activation steps: firstly, with phosphoric acid (designated PP) and then using potassium hydroxide (designated PK). The AC produced after the two activation steps showed a surface area as high as 833 m2 g-1 with a pore volume of 0.44 cm3 g-1, where the raw material of PPW showed a surface area < 4 m2 g-1. This can help aid and facilitate the concept of the circular economy by effectively up-cycling and valorising waste lignocellulosic biomass such as potato peel waste to high surface area AC and subsequently, multi-walled carbon nanotubes (MWCNTs). Consequently, MWCNTs were prepared from the produced AC by mixing it with the nitrogen-based material melamine and iron precursor, iron (III) oxalate hexahydrate. This produced hydrophilic multi-wall carbon nanotubes (MWCNTs) with a water contact angle of θ = 14.97 °. Both AC and CNT materials were used in heavy metal removal (HMR) where the maximum lead absorption was observed for sample PK with a 84% removal capacity after the first hour of testing. This result signifies that the synthesis of these up-cycled materials can have applications in areas such as wastewater treatment or other conventional AC/CNT end uses with a rapid cycle time in a two-fold approach to improve the eco-friendly synthesis of such value-added products and the circular economy from a significant waste stream, i.e., PPW. Graphical abstract .
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Affiliation(s)
- Ahmed I Osman
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, Northern Ireland.
- Chemistry Department, Faculty of Science-Qena, South Valley University, Qena, 83523, Egypt.
| | - Jacob Blewitt
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, Northern Ireland
| | - Jehad K Abu-Dahrieh
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, Northern Ireland
| | - Charlie Farrell
- South West College, Cookstown, Co., Tyrone, BT80 8DN, Northern Ireland, UK
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Belfast, BT9 5AH, Northern Ireland, UK
| | - Ala'a H Al-Muhtaseb
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat, Oman
| | - John Harrison
- South West College, Cookstown, Co., Tyrone, BT80 8DN, Northern Ireland, UK
| | - David W Rooney
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, Northern Ireland.
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Kumanek B, Przypis Ł, Wróbel PS, Krzywiecki M, Walczak KZ, Janas D. Convenient but powerful method to dope single-walled carbon nanotube films with iodonium salts. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01133-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Bento FR, Corradini PG, Mascaro LH. Inexpensive methodology for obtaining flexible SnO2-single-walled carbon nanotube composites for lithium-ion battery anodes. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04283-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Krukiewicz K, Janas D, Vallejo-Giraldo C, Biggs MJ. Self-supporting carbon nanotube films as flexible neural interfaces. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.10.157] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Turek E, Wasiak T, Stando G, Janas D. Probing the mechanics of aqueous two-phase extraction using large diameter single-walled carbon nanotubes. NANOTECHNOLOGY 2018; 29:405704. [PMID: 30004027 DOI: 10.1088/1361-6528/aad359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We have demonstrated that large diameter (1.8 ± 0.4 nm) carbon nanotubes (CNTs) can be separated by means of the aqueous two-phase extraction (ATPE). This rapid and convenient tool has enabled us to isolate fractions of particular CNT diameter distribution. We have shown how a range of parameters can be used to fine tune the characteristics of the isolated material. Interestingly, by varying the pH of the medium, we have suppressed the extraction of low diameter CNTs and only large diameter CNTs were obtained. A number of other factors such as selected surfactant concentration steps, temperature or amount of starting CNT material have been found to have a significant effect on the end result of the CNT differentiation. The findings have provided us with more insight regarding the underlying mechanics of ATPE for processing polydisperse CNT mixtures.
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Affiliation(s)
- Edyta Turek
- Department of Chemistry, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland
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