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Chen K, Peng L, Fang Z, Lin X, Sun C, Qiu X. Dispersing boron nitride nanosheets with carboxymethylated cellulose nanofibrils for strong and thermally conductive nanocomposite films with improved water-resistance. Carbohydr Polym 2023; 321:121250. [PMID: 37739515 DOI: 10.1016/j.carbpol.2023.121250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 09/24/2023]
Abstract
BNNS (boron nitride nanosheets)-CNF (cellulose nanofibrils) nanocomposite films have attracted increasing attention for advanced thermal management applications. However, the nanocomposite films reported so far generally suffer from unsatisfactory overall performance, especially for thermal conductivity and tensile strength. In this work, a nanocomposite film with excellent overall performance was prepared by using CCNF1.2 (carboxymethylated CNF with 1.2 mmol·g-1 carboxyl content) simultaneously as effective dispersant and reinforcement matrix for BNNS. The high aspect ratio of CCNF1.2 is primarily responsible for its excellent dispersion capability for BNNS, which provides strong steric hindrance repulsion force. Meanwhile, CCNF1.2 manifests the strongest hydrophobic-hydrophobic interactions with BNNS, and its carboxyl groups completely interact with the -OH of BNNS by hydrogen bonding. As a result, the BNNS-CCNF1.2 film (50 wt% BNNS) exhibits compacted aligned structure and superior comprehensive performance (125.0 MPa tensile strength, 17.3 W·m-1·K-1 in-plane thermal conductivity, and improved water resistance). This work demonstrates the effectiveness of CCNF in improving the overall performance of BNNS-CNF films and paves the way for their practical application in the advanced thermal management of next-generation electronic devices.
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Affiliation(s)
- Kaihuang Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, PR China
| | - Liyuan Peng
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong, PR China
| | - Zhiqiang Fang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong, PR China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Panyu District, Guangzhou 510006, PR China.
| | - Xiaoqi Lin
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong, PR China
| | - Chuan Sun
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, PR China
| | - Xueqing Qiu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Waihuan Xi Road 100, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Panyu District, Guangzhou 510006, PR China.
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2
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Martínez-Jiménez C, Chow A, Smith McWilliams AD, Martí AA. Hexagonal boron nitride exfoliation and dispersion. NANOSCALE 2023; 15:16836-16873. [PMID: 37850487 DOI: 10.1039/d3nr03941b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
Research on hexagonal boron nitride (hBN) 2-dimensional nanostructures has gained traction due to their unique chemical, thermal, and electronic properties. However, to make use of these exceptional properties and fabricate macroscopic materials, hBN often needs to be exfoliated and dispersed in a solvent. In this review, we provide an overview of the many different methods that have been used for dispersing hBN. The approaches that will be covered in this review include solvents, covalent functionalization, acids and bases, surfactants and polymers, biomolecules, intercalating agents, and thermal expansion. The properties of the exfoliated sheets obtained and the dispersions are discussed, and an overview of the work in the field throughout the years is provided.
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Affiliation(s)
| | - Alina Chow
- Department of Chemistry, Rice University, Houston, TX, 77005, USA.
| | | | - Angel A Martí
- Department of Chemistry, Rice University, Houston, TX, 77005, USA.
- Department of Materials Science and Nanoengineering, Rice University, Houston, TX, 77005, USA
- Department of Bioengineering, Rice University, Houston, TX, 77005, USA
- Smalley-Curl Institute for Nanoscale Science and Technology, Rice University, Houston, TX, 77005, USA
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3
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Selopal GS, Abdelkarim O, Kaur J, Liu J, Jin L, Chen Z, Navarro-Pardo F, Manzhos S, Sun S, Yurtsever A, Zarrin H, Wang ZM, Rosei F. Surface engineering of two-dimensional hexagonal boron-nitride for optoelectronic devices. NANOSCALE 2023; 15:15810-15830. [PMID: 37743729 DOI: 10.1039/d3nr03864e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Two-dimensional hexagonal boron nitride (2D h-BN) is being extensively studied in optoelectronic devices due to its electronic and photonic properties. However, the controlled optimization of h-BN's insulating properties is necessary to fully explore its potential in energy conversion and storage devices. In this work, we engineered the surface of h-BN nanoflakes via one-step in situ chemical functionalization using a liquid-phase exfoliation approach. The functionalized h-BN (F-h-BN) nanoflakes were subsequently dispersed on the surface of TiO2 to tune the TiO2/QDs interface of the optoelectronic device. The photoelectrochemical (PEC) devices based on TiO2/F-h-BN/QDs with optimized addition of carbon nanotubes (CNTs) and scattering layers showed 46% improvement compared to the control device (TiO2/QDs). This significant improvement is attributed to the reduced trap/carrier recombination and enhanced carrier injection rate of the TiO2-CNTs/F-h-BN/QDs photoanode. Furthermore, by employing an optimized TiO2-CNTs/F-h-BN/QDs photoanode, QDs-sensitized solar cells (QDSCs) yield an 18% improvement in photoconversion efficiency. This represents a potential and adaptability of our approach, and pathway to explore surface-engineered 2D materials to optimize the interface of solar energy conversion and other emerging optoelectronic devices.
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Affiliation(s)
- Gurpreet Singh Selopal
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
- Department of Engineering, Faculty of Agriculture, Dalhousie University, Truro, B2N 5E3, NS, Canada.
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Omar Abdelkarim
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Jasneet Kaur
- Department of Chemical Engineering, Faculty of Engineering & Architectural Science, Toronto Metropolitan University, Toronto, M5B 2K3, ON, Canada
- Department of Physics and Yousef Haj-Ahmad Department of Engineering, Faculty of Mathematics and Science, Brock University, 1812 Sir Isaac Brock Way, St. Catharines L2S 3A1, ON, Canada
| | - Jiabin Liu
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Lei Jin
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Zhangsen Chen
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Fabiola Navarro-Pardo
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Sergei Manzhos
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Shuhui Sun
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Aycan Yurtsever
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
| | - Hadis Zarrin
- Department of Chemical Engineering, Faculty of Engineering & Architectural Science, Toronto Metropolitan University, Toronto, M5B 2K3, ON, Canada
| | - Zhiming M Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
- Institute for Advanced Study, Chengdu University, Chengdu, Sichuan, 610106, P. R. China
| | - Federico Rosei
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, J3X 1P7, QC, Canada.
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4
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Salah A, Ren HD, Al-Ansi N, Tan H, Yu F, Yanchun L, Thamer BM, Al-Salihy A, Zhao L, Li Y. Dispersing small Ru nanoparticles into boron nitride remodified by reduced graphene oxide for high-efficient electrocatalytic hydrogen evolution reaction. J Colloid Interface Sci 2023; 644:378-387. [PMID: 37120886 DOI: 10.1016/j.jcis.2023.04.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/16/2023] [Accepted: 04/20/2023] [Indexed: 05/02/2023]
Abstract
Ruthenium (Ru) electrocatalysts suffer from excessive aggregation during the hydrogen evolution reaction (HER), which hinders their practical application for hydrogen production. Hexagonal boron nitride (h-BN) is a potential carrier that could solve the above problem, but its wide band gap and low conductivity become obstacles. Herein, we provide a new, facile, low-cost, and effective strategy (killing two birds with one stone) to overcome the above issues. After modifying h-BN with reduced graphene oxide (rGO), a small amount of Ru nanoparticles (NPs) (2.2 %) are dispersed into BN with approximately uniform distribution and size control of Ru nanoparticles (∼3.85 nm). The strong synergy between Ru NPs and BN@C in the optimal Ru/BN@C (Ru wt.% = 2.22 %) electrocatalyst endows it an outstanding HER activity, with small HER overpotentials (η10 = 32 mV, 35 mV) and low Tafel slopes (33.89 mV dec-1, 37.66 mV dec-1) in both 1 M KOH and 0.5 M H2SO4 media, respectively, along with good long-term stability for 50 h. Based on density functional theory (DFT) calculations, the addition of Ru to BN has been successful in creating fresh active sites for H*, with good possible adsorption/desorption ability (ΔGH* = -0.24 eV) while preserving low water dissociation (ΔGb = 0.46 eV) in an alkaline environment. As a result, the Ru/BN composite exhibits outstanding HER activity in both acidic and alkaline conditions. Furthermore, this study provides, for the first time, a template-free strategy to develop a good and low-cost supporter (BN) for dispersing other noble metals and the formation of highly efficient HER/OER electrocatalysts.
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Affiliation(s)
- Abdulwahab Salah
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China; Department of Science Curricula and Teaching Methodologies, Faculty of Education, Sana'a University, Yemen
| | - Hong-Da Ren
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Nabilah Al-Ansi
- Faculty of Chemistry, National and Local United Engineering Laboratory for Power Batteries, Northeast Normal University, Changchun 130024, PR China
| | - Huaqiao Tan
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China.
| | - Feiyang Yu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Liu Yanchun
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Badr M Thamer
- Chemistry Department, Science College, King Saud University, Riyadh 11451, Saudi Arabia
| | - Adel Al-Salihy
- School of Chemistry and Chemical Engineering Harbin Institute of Technology, Harbin 150001, PR China
| | - Liang Zhao
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China.
| | - Yangguang Li
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China.
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5
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Wang FR, Sheng XX, Zhang M, Miao M, Liu JK, Liu JC, Ma YS, Liu PP. Design and enhanced anticorrosion performance of a Zn 5Mo 2O 11·5H 2O/ h-BN nanocomposite with labyrinth of nanopores. NANOSCALE 2023; 15:3199-3211. [PMID: 36723123 DOI: 10.1039/d2nr06846j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Zinc molybdate (ZMO) is a safe and effective grafting material for anticorrosion. Herein, we reported the synthesis of ZMO/h-BN with the labyrinth of capillary pores owing to the in situ growth of ZMO on flake hexagonal boron nitride (h-BN) using the hydrothermal method. The special morphological structure provided a tortuous path for aggressive species to the steel substrate, which extended and blocked the transmission of aggressive species, enhancing the physical corrosion barrier performance. In addition, the capillary pores of ZMO contributed to the competitive adsorption of Cl- in an electrolyte and reduced the diffusion of aggressive species, thus further delaying the corrosion process. Moreover, the capture of oxygen by forming a B-O bond with h-BN and the formation of a molybdate passive film are beneficial for the inhibition of cathodic and anodic reactions. As verified by electrochemical impedance spectroscopy (EIS), the anticorrosion performance of ZMO/h-BN coating increased by 49.58% and 130.72% compared with ZMO and epoxy resin (EP) coatings after immersing in a NaCl aqueous solution (3.50 wt%) for 72 h. This coating matrix provides an avenue for molybdate-based corrosion remediation.
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Affiliation(s)
- Feng-Rui Wang
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai, 200237, P.R. China.
| | - Xiao-Xiao Sheng
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai, 200237, P.R. China.
| | - Min Zhang
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai, 200237, P.R. China.
| | - Min Miao
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai, 200237, P.R. China.
| | - Jin-Ku Liu
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology (ECUST), Shanghai, 200237, P.R. China.
| | - Ji-Chang Liu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, P.R. China
| | - Yun-Sheng Ma
- Shandong Chambroad Holding Group Co., Ltd., Shandong Province, 256500, P.R. China.
| | - Peng-Peng Liu
- Shandong Chambroad Holding Group Co., Ltd., Shandong Province, 256500, P.R. China.
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6
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Sun J, Xiao X, Zhang Y, Cao W, Wang N, Gu L. Universal Method to Synergistically Exfoliate and Functionalize Boron Nitride Nanosheets with a Large Yield and High Concentration. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01263] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jiulong Sun
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Xinzhe Xiao
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Yumin Zhang
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Wanwan Cao
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Ning Wang
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen 518100, China
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Lin Gu
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
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7
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Gao J, Chen L, Wang H, Wu Y, Zhu X, Xiao Y, Gao W, Yin H. Membranes based on porous hexagonal boron nitride nanorods for ultrafast and effective molecular separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Meziani MJ, Sheriff K, Parajuli P, Priego P, Bhattacharya S, Rao AM, Quimby JL, Qiao R, Wang P, Hwu SJ, Wang Z, Sun YP. Advances in Studies of Boron Nitride Nanosheets and Nanocomposites for Thermal Transport and Related Applications. Chemphyschem 2021; 23:e202100645. [PMID: 34626067 DOI: 10.1002/cphc.202100645] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/30/2021] [Indexed: 01/10/2023]
Abstract
Hexagonal boron nitride (h-BN) and exfoliated nanosheets (BNNs) not only resemble their carbon counterparts graphite and graphene nanosheets in structural configurations and many excellent materials characteristics, especially the ultra-high thermal conductivity, but also offer other unique properties such as being electrically insulating and extreme chemical stability and oxidation resistance even at elevated temperatures. In fact, BNNs as a special class of 2-D nanomaterials have been widely pursued for technological applications that are beyond the reach of their carbon counterparts. Highlighted in this article are significant recent advances in the development of more effective and efficient exfoliation techniques for high-quality BNNs, the understanding of their characteristic properties, and the use of BNNs in polymeric nanocomposites for thermally conductive yet electrically insulating materials and systems. Major challenges and opportunities for further advances in the relevant research field are also discussed.
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Affiliation(s)
- Mohammed J Meziani
- Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA.,Department of Natural Sciences, Northwest Missouri State University, Maryville, Missouri, 64468, USA
| | - Kirkland Sheriff
- Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA
| | - Prakash Parajuli
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, South Carolina, 29634, USA
| | - Paul Priego
- Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA
| | - Sriparna Bhattacharya
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, South Carolina, 29634, USA
| | - Apparao M Rao
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, South Carolina, 29634, USA
| | - Jesse L Quimby
- Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA
| | - Rui Qiao
- Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061, USA
| | - Ping Wang
- Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA
| | - Shiou-Jyh Hwu
- Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA
| | - Zhengdong Wang
- Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA
| | - Ya-Ping Sun
- Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA
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Brljak N, Knecht MR, Walsh TR. Controlling the Orientation and Viscoelasticity of Materials-Binding Peptides on Hexagonal Boron Nitride Using Fatty Acids. J Phys Chem B 2021; 125:10621-10628. [PMID: 34505506 DOI: 10.1021/acs.jpcb.1c05446] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The adsorption of materials-binding peptides to technologically relevant 2D nanosheets of h-BN could be transformative for both property modulation and materials applications. To enhance binding, integration of non-natural functionalities into the biomolecule could prove to be important. However, very little is understood regarding the impact of these biomolecular structural alterations on the binding, which could influence the affinity and surface-adsorbed structures. Here, the effect of fatty acid incorporation site and carbon chain length is investigated using the BP7 peptide, previously identified with affinity for h-BN. The peptide was modified at either the N- or C-terminus with a fatty acid chain length of 6-12 carbons long. The binding affinity and bio-overlayer viscoelasticity are quantified using quartz crystal microbalance analysis. While fatty acid conjugation did not substantially affect the affinity of the resultant biomolecules, it did alter the viscoelasticity of the biomolecular overlayer on the h-BN surface based upon the carbon chain length and incorporation site. Molecular dynamics simulations demonstrate interplay between enthalpic and entropic effects in modifying the overlayer viscoelasticity. The simulations predict that C-terminal conjugation promotes the enhancement of upright adsorbed states, compared with the N-terminal case, with this effect most pronounced for the 10-carbon chain.
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Affiliation(s)
- Nermina Brljak
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, United States
| | - Marc R Knecht
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, United States.,Dr. J.T. Macdonald Foundation Biomedical Nanotechnology Institute, University of Miami, UM Life Science Technology Building, 1951 NW Seventh Avenue, Suite 475, Miami, Florida 33136, United States
| | - Tiffany R Walsh
- Institute for Frontier Materials, Deakin University, Waurn Ponds, 3216 Victoria, Australia
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10
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Xie WQ, Lu ZW, He CC, Yang XB, Zhao YJ. Theoretical study of tunable magnetism of two-dimensional MnSe 2through strain, charge, and defect. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:215803. [PMID: 33588397 DOI: 10.1088/1361-648x/abe64c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Abstract
Two-dimensional transition metal dichalcogenide MnSe2(2D-MnSe2) with Curie temperature approximate to 300 K has a significant spintronic application on thin-film devices. We demonstrate theoretically a tunable magnetic transition of 2D-MnSe2between anti-ferromagnetic (AFM) metal and ferromagnetic (FM) half metal as strain increasing. Mechanism of that transition involves a competition betweend-p-dthrough-bond andd-ddirect interaction in 2D-MnSe2. Hole doping is an alternative way to enhance the stability of FM coupling. Adsorption (including Li, Na, Cl and F) and vacancy (Mn and Se) studies confirm that the controllable magnetism of 2D-MnSe2is related to both interaction competition and charge doping. Tensile strains can greatly amplify through-bond interaction and exchange parameters, resulting in a sharp increase of Curie temperature.
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Affiliation(s)
- Wen-Qiang Xie
- Department of Physics, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Zhi-Wei Lu
- Department of Physics, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Chang-Chun He
- Department of Physics, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Xiao-Bao Yang
- Department of Physics, South China University of Technology, Guangzhou 510640, People's Republic of China
- Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510640, People's Republic of China, Tel: +86-20-87110426; Fax: +86-20-87112837
| | - Yu-Jun Zhao
- Department of Physics, South China University of Technology, Guangzhou 510640, People's Republic of China
- Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510640, People's Republic of China, Tel: +86-20-87110426; Fax: +86-20-87112837
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11
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Kaur J, Malekkhouyan A, Selopal GS, Wang ZM, Rosei F, Zarrin H. Bidirectional Superionic Conduction in Surface-Engineered 2D Hexagonal Boron Nitrides. ACS APPLIED MATERIALS & INTERFACES 2021; 13:6532-6544. [PMID: 33499606 DOI: 10.1021/acsami.0c21234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We designed functionalized hexagonal boron nitride (FhBN) nanoflakes with high proton conductivity in both in- and through-plane directions as next generation polymer electrolyte membranes (PEMs) for energy storage and conversion systems. The synthesis and functionalization of hBN nanoflakes with sulfonic acid (SA) groups are obtained by one-step and in situ liquid-phase exfoliation with excellent dispersibility and stability over a period of three months. The physico/chemical properties of FhBN nanoflakes were investigated by different spectroscopic and microscopic characterization, confirming chemical interactions between hBN lattice and SA groups. High concentrations (65 and 75 wt %) of FhBN nanoflakes composed with Nafion solution formed stable FhBN-Nafion nanocomposite PEMs, offering extra proton conduction sites, doubling ion-exchange capacity, and reducing the swelling ratio compared to those of Nafion. Our results demonstrate that both the in-plane and through-plane proton conductivities of FhBN-Nafion PEMs significantly improve under various conditions comparative to that of Nafion. The maximum values of both in- and through-plane conductivities for FhBN75%-Nafion PEM at 80% of humidity and 80 °C are 0.41 and 0.1 S·cm-1, respectively, which are 7 and 14 times higher than those of Nafion. The bidirectional superionic transport in highly concentrated FhBN PEMs is responsible for outstanding properties, useful for electrochemical energy devices.
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Affiliation(s)
- Jasneet Kaur
- Nano-Engineering Laboratory of Energy & Environmental Technologies, Department of Chemical Engineering, Faculty of Engineering & Architectural Science, Ryerson University, Toronto, Ontario M5B 2K3, Canada
| | - Adel Malekkhouyan
- Nano-Engineering Laboratory of Energy & Environmental Technologies, Department of Chemical Engineering, Faculty of Engineering & Architectural Science, Ryerson University, Toronto, Ontario M5B 2K3, Canada
| | - Gurpreet S Selopal
- Centre for Energy, Materials and Telecommunications, Institut National de La Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Quebec J3X 1S2, Canada
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 0610054, P.R. China
| | - Zhiming M Wang
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 0610054, P.R. China
| | - Federico Rosei
- Centre for Energy, Materials and Telecommunications, Institut National de La Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Quebec J3X 1S2, Canada
- Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 0610054, P.R. China
| | - Hadis Zarrin
- Nano-Engineering Laboratory of Energy & Environmental Technologies, Department of Chemical Engineering, Faculty of Engineering & Architectural Science, Ryerson University, Toronto, Ontario M5B 2K3, Canada
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Gu C, Lu C, Gao YX, Tan P, Peng SS, Liu XQ, Sun LB. Hybridization with Ti 3C 2T x MXene: An Effective Approach to Boost the Hydrothermal Stability and Catalytic Performance of Metal-Organic Frameworks. Inorg Chem 2021; 60:1380-1387. [PMID: 33428392 DOI: 10.1021/acs.inorgchem.0c02589] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal-organic frameworks (MOFs) have attracted increasing research enthusiasm owing to their tunable functionality, diverse structure characteristics, and large surface area. However, poor hydrothermal stability restricts the utilization of some MOFs in practical applications. Our work aims at improving the hydrothermal stability of a representative MOF, namely, HKUST-1, by incorporating a two-dimensional material Ti3C2Tx MXene for the first time. A new type of hybrid material is synthesized through the hybridization of HKUST-1 and Ti3C2Tx, and the obtained hybrids show improved hydrothermal stability as well as catalytic performance. The porosity of hybrids is enhanced when incorporating an appropriate amount of Ti3C2Tx, and the surface area can reach 1380 m2·g-1, while the pristine HKUST-1 is 1210 m2·g-1. After the hydrothermal treatment (hot water vapor, 70 °C), the structure of hybrid materials maintains well, while the framework of HKUST-1 is severely destroyed. When catalyzing the ring-opening reaction of styrene oxide, the conversion reaches 76.7% only for 20 min, which is much higher than that of pure HKUST-1 (23.1% for 20 min). More importantly, the catalytic activity could recover without loss even after six cycles. Our hybrid materials are promising in practical catalytic applications due to their excellent hydrothermal stability, catalytic activity, and reusability.
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Affiliation(s)
- Chen Gu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Cong Lu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yu-Xia Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Peng Tan
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Song-Song Peng
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiao-Qin Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Lin-Bing Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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Maity CK, Sahoo S, Verma K, Behera AK, Nayak GC. Facile functionalization of boron nitride (BN) for the development of high-performance asymmetric supercapacitors. NEW J CHEM 2020. [DOI: 10.1039/c9nj06284j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ternary composites based on functionalized BN, a carbonaceous material, and PANI are developed for real-time asymmetric supercapacitor application.
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Affiliation(s)
| | - Sumanta Sahoo
- Department of Chemistry
- IIT (ISM) Dhanbad
- Dhanbad
- India
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14
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Hexagonal and Cubic Boron Nitride in Bulk and Nanosized Forms and Their Capacitive Behavior. ChemElectroChem 2019. [DOI: 10.1002/celc.201901328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Wu D, Shen X, Liu J, Wang C, Liang Y, Fu XZ, Luo JL. Electrochemical exfoliation from an industrial ingot: ultrathin metallic bismuth nanosheets for excellent CO 2 capture and electrocatalytic conversion. NANOSCALE 2019; 11:22125-22133. [PMID: 31720649 DOI: 10.1039/c9nr07863k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Formic acid (or formate) is a liquid fuel and chemical feedstock, and it is considered as one of the most useful value-added reductive products from electrochemical CO2 conversion. Green metallic Bi nanosheets are believed be a promising candidate for formic acid production in CO2 electroreduction. However, the complexity of their preparation with a low yield hinders their practical application on a large scale. Herein, we report that by using a cheap and commonly used industrial ingot, phase-pure two-dimensional bismuth nanosheets are fabricated on a large scale by a rapid electrochemical cathodic exfoliation method. In addition to featuring abundant active sites, the obtained Bi nanosheets possess exceptionally high adsorption capacity to CO2 compared to its bulk counterpart, resulting in remarkable enhancement in CO2 electroreduction with high selectivity toward formic acid over a wide range of negative potentials, high current density and satisfactory durability. This facile strategy opens a promising avenue for massive fabrication of metallic Bi nanosheets with excellent electrocatalytic performance for large-scale commercial utilization of CO2.
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Affiliation(s)
- Dan Wu
- College of Materials Science and Engineering, Shenzhen University, 1066 Xueyuan Ave., Shenzhen, China.
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Zhang X, Luo X, Zheng X, Wu X, Xu H. Protonation-Assisted Exfoliation of N-Containing 2D Conjugated Polymers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1903643. [PMID: 31478337 DOI: 10.1002/smll.201903643] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/16/2019] [Indexed: 06/10/2023]
Abstract
Ultrathin 2D conjugated polymer nanosheets are an emerging class of photocatalysts for solar-to-chemical energy conversion. Until now, the majority of ultrathin 2D polymer photocatalysts are produced through exfoliation of layered polymers. Unfortunately, it still remains a great challenge to exfoliate layered polymers into ultrathin nanosheets with high yields. In this work, a liquid-phase protonation-assisted exfoliation is demonstrated to enable remarkably improved exfoliation yields of various 2D N-containing conjugated polymers such as g-C3 N4 , C2 N, and aza-CMP. The exfoliation yields are only 2-15% in pure water whereas they can be substantially improved to 41-56% in 12 m HCl. The exfoliated ultrathin nanosheets possess average thicknesses less than 5 nm and can be easily dispersed in aqueous solutions. More importantly, the exfoliated nanosheets exhibit significantly enhanced photocatalytic activity toward photocatalytic water splitting compared to their bulk counterparts. Further characterizations and computational calculations reveal that protonation of the heterocyclic nitrogen sites in the conjugated polymer frameworks can lead to strong hydrogen bonding between the polymer surfaces and water molecules, resulting in facilitated exfoliation of polymers into the liquid phase. This study unveils an important protocol toward producing ultrathin 2D N-containing conjugated polymer nanosheets for future solar energy conversion.
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Affiliation(s)
- Xinlei Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Xiao Luo
- Hefei National Laboratory of Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Xusheng Zheng
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Xiaojun Wu
- Hefei National Laboratory of Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Hangxun Xu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
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