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Kong F, Yan J, Zhang C, Yang W, Wang K, Zhang C, Shao T. High Performance Epoxy Composites Containing Nanofiller Modified by Plasma Bubbles. ACS APPLIED MATERIALS & INTERFACES 2023; 15:16009-16016. [PMID: 36926814 DOI: 10.1021/acsami.2c23275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The thermal conductivity of polymer materials is a fundamental parameter in the field of high-voltage electrical insulation. When the operating frequency and power for electrical equipment or electronic devices increase significantly, the internal heat will increase dramatically, and the accumulation of heat will further lead to insulation failure and serious damage of the whole system. The addition of filler with high thermal conductivity into polymer is a common solution. However, the interfacial thermal resistance between filler and bulk materials is the major obstacle to improve thermal conductivity. Herein, in order to reduce the interfacial thermal resistance, nanofillers are modified by plasma technology. The surface modification of nano-Al2O3 is carried out using plasma bubbles with three atmospheres (Ar, Ar+O2, air) as well as coupling agent. The situation of surface grafting before and after the modification is characterized using FTIR, XPS, and SEM. The effect of the mechanism of modification on the thermal conductivity and reaction pathway is investigated. The results showed that the thermal conductivity after plasma modification is increased significantly. Especially, the thermal conductivity is increased by 35% for the sample modified by Ar+O2 atmosphere. This results because more hydroxyl is introduced on the filler surface by the plasma bubbles, which enhance the interface compatibility between filler and epoxy. In addition, surface insulation performance for the modified samples also is enhanced by 14%. This is associated with the change of surface resistance and trap distribution. These results provide potential support for the development of fabrication for high performance epoxy composites.
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Affiliation(s)
- Fei Kong
- State Key Laboratory of Advanced Power Transmission Technology, State Grid Smart Grid Research Institute Co. Ltd, Beijing, 102209, China
- Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jingyi Yan
- Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Chuansheng Zhang
- Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Yang
- State Key Laboratory of Advanced Power Transmission Technology, State Grid Smart Grid Research Institute Co. Ltd, Beijing, 102209, China
| | - Kun Wang
- State Key Laboratory of Advanced Power Transmission Technology, State Grid Smart Grid Research Institute Co. Ltd, Beijing, 102209, China
| | - Cheng Zhang
- Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tao Shao
- Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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In Vitro and In Vivo Cytotoxicity of Boron Nitride Nanotubes: A Systematic Review. NANOMATERIALS 2022; 12:nano12122069. [PMID: 35745407 PMCID: PMC9229602 DOI: 10.3390/nano12122069] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 12/17/2022]
Abstract
Boron nitride nanotubes (BNNTs) are an exciting class of nanomaterials due to their unique chemical and physical characteristics. In recent decades, BNNTs have gained huge attention in research and development for various applications, including as nano-fillers for composites, semiconductor devices, hydrogen storage, and as an emerging material in biomedical and tissue engineering applications. However, the toxicity of BNNTs is not clear, and the biocompatibility is not proven yet. In this review, the role of BNNTs in biocompatibility studies is assessed in terms of their characteristics: cell viability, proliferation, therapeutic outcomes, and genotoxicity, which are vital elements for their prospective use in biomedical applications. A systematic review was conducted utilising the databases Scopus and Web of Science (WOS) (2008-2022). Additional findings were discovered manually by snowballing the reference lists of appropriate reviews. Only English-language articles were included. Finally, the significant analysis and discussion of the chosen articles are presented.
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Meng Q, Han S, Liu T, Ma J, Ji S, Dai J, Kang H, Ma J. Noncovalent Modification of Boron Nitrite Nanosheets for Thermally Conductive, Mechanically Resilient Epoxy Nanocomposites. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03133] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Qingshi Meng
- College of Aerospace Engineering, Shenyang Aerospace University, 37 Daoyi South Avenue, Shenyang, Liaoning 110136, China
| | - Sensen Han
- College of Aerospace Engineering, Shenyang Aerospace University, 37 Daoyi South Avenue, Shenyang, Liaoning 110136, China
| | - Tianqing Liu
- NICM Health Research Institute, Western Sydney University, Westmead 2145, Australia
| | - Jian Ma
- Administrative Department, Shenyang Aerospace University, 37 Daoyi South Avenue, Shenyang, Liaoning 110136, China
| | - Shude Ji
- College of Aerospace Engineering, Shenyang Aerospace University, 37 Daoyi South Avenue, Shenyang, Liaoning 110136, China
| | - Jiabin Dai
- University of South Australia, UniSA STEM, Mawson Lakes, SA 5095, Australia
| | - Hailan Kang
- School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China
| | - Jun Ma
- College of Aerospace Engineering, Shenyang Aerospace University, 37 Daoyi South Avenue, Shenyang, Liaoning 110136, China
- University of South Australia, UniSA STEM, Mawson Lakes, SA 5095, Australia
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Wang R, Zhang D, Liu C. DFT study of the adsorption of 2,3,7,8-tetrachlorodibenzo-p-dioxin on pristine and Ni-doped boron nitride nanotubes. CHEMOSPHERE 2017; 168:18-24. [PMID: 27776234 DOI: 10.1016/j.chemosphere.2016.10.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/25/2016] [Accepted: 10/13/2016] [Indexed: 06/06/2023]
Abstract
Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are highly toxic to humans and the environment. Developing efficient methods to detect or remove these pollutants is particularly important and urgent. Boron nitride nanotubes (BNNTs) with low dimension and high surface-to-volume ratio might be one of promising materials for the adsorption of PCDD/Fs. Here we present a density functional theory (DFT) study on the interaction of the pristine and Ni doped (8,0) single-walled BNNTs with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), the most toxic congener among PCDD/F family. The calculated results show that the pristine BNNT intrinsically interacts with TCDD via physisorption with π-π stacking interaction, in contrast, the Ni-doped BNNT presents much higher reactivities toward TCDD. The impurity Ni atom plays a crucial role for capturing TCDD molecule. We also find that the Ni doping introduces the local electronic states within the band gap of the BNNT and induces magnetism in the doped systems. The present results are expected to provide useful guidance for the potential application of BNNTs as adsorption materials for detecting or removing dioxin pollutants.
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Affiliation(s)
- Ruoxi Wang
- Criminal Scientific and Technological Department, Shandong Police College, Jinan, 250014, PR China
| | - Dongju Zhang
- Institute of Theoretical Chemistry, Shandong University, Jinan, 250100, PR China.
| | - Chengbu Liu
- Institute of Theoretical Chemistry, Shandong University, Jinan, 250100, PR China
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Rahman MM, Sultana I, Chen Z, Srikanth M, Li LH, Dai XJ, Chen Y. Ex situ electrochemical sodiation/desodiation observation of Co₃O₄ anchored carbon nanotubes: a high performance sodium-ion battery anode produced by pulsed plasma in a liquid. NANOSCALE 2015; 7:13088-13095. [PMID: 26176997 DOI: 10.1039/c5nr03335g] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Liquid plasma, produced by nanosecond pulses, provides an efficient and simple way to fabricate a nanocomposite architecture of Co3O4/CNTs from carbon nanotubes (CNTs) and clusters of Co3O4 nanoparticles in deionized water. The crucial feature of the composite's structure is that Co3O4 nanoparticle clusters are uniformly dispersed and anchored to CNT networks in which Co3O4 guarantees high electrochemical reactivity towards sodium, and CNTs provide conductivity and stabilize the anode structure. We demonstrated that the Co3O4/CNT nanocomposite is capable of delivering a stable and high capacity of 403 mA h g(-1) at 50 mA g(-1) after 100 cycles where the sodium uptake/extract is confirmed in the way of reversible conversion reaction by adopting ex situ techniques. The rate capability of the composite is significantly improved and its reversible capacity is measured to be 212 mA h g(-1) at 1.6 A g(-1) and 190 mA h g(-1) at 3.2 A g(-1), respectively. Due to the simple synthesis technique with high electrochemical performance, Co3O4/CNT nanocomposites have great potential as anode materials for sodium-ion batteries.
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Affiliation(s)
- Md Mokhlesur Rahman
- Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia.
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