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Gao Y, Xiao M, Zou H, Nurwono G, Zgonc D, Birch Q, Nadagouda MN, Park JO, Blotevogel J, Liu C, Hoek EMV, Mahendra S. Laccase Immobilized on Arginine-Functionalized Boron Nitride Nanosheets for Enhanced Atrazine Degradation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 39132890 DOI: 10.1021/acs.est.4c02849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Enzyme-mediated systems have been widely employed for the biotransformation of environmental contaminants. However, the catalytic performance of free enzymes is restricted by the rapid loss of their catalytic activity, stability, and reusability. In this work, we developed an enzyme immobilization platform by elaborately anchoring fungal laccase onto arginine-functionalized boron nitride nanosheets (BNNS-Arg@Lac). BNNS-Arg@Lac showcased ∼75% immobilization yield and enhanced stability against fluctuating pH values and temperatures, along with remarkable reusability across six consecutive cycles, outperforming free natural laccase (nlaccase). A model pollutant, atrazine, was selected for a proof-of-concept demonstration, given the substantial environmental and public health concerns in agriculture runoff. BNNS-Arg@Lac-catalyzed atrazine degradation rate was nearly twice that of nlaccase. Moreover, BNNS-Arg@Lac consistently demonstrated superior atrazine degradation in synthetic agricultural wastewater and various mediator systems compared to nlaccase. Comprehensive product analysis unraveled distinct degradation pathways for BNNS-Arg@Lac and nlaccase. Overall, this research provides a foundation for the future development of enzyme-nanomaterial hybrids for degrading environmental chemicals and may unlock new potential for green and efficient resource recovery and waste management strategies.
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Affiliation(s)
- Yifan Gao
- Department of Civil and Environmental Engineering, University of California, Los Angeles, 580 Portola Plaza, Los Angeles, California 90095, United States
| | - Minhao Xiao
- Department of Civil and Environmental Engineering, University of California, Los Angeles, 580 Portola Plaza, Los Angeles, California 90095, United States
| | - Haiyuan Zou
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Glenn Nurwono
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - David Zgonc
- Department of Civil and Environmental Engineering, University of California, Los Angeles, 580 Portola Plaza, Los Angeles, California 90095, United States
| | - Quinn Birch
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Mallikarjuna N Nadagouda
- Office of Research & Development Center for Environmental Solutions & Emergency Response, United States Environmental Protection Agency, 26 W. Martin Luther King Drive, Cincinnati, Ohio 45268, United States
| | - Junyoung O Park
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, 5531 Boelter Hall, Los Angeles, California 90095, United States
| | - Jens Blotevogel
- CSIRO Environment, Waite Campus, Urrbrae, SA 5064, Australia
| | - Chong Liu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Eric M V Hoek
- Department of Civil and Environmental Engineering, University of California, Los Angeles, 580 Portola Plaza, Los Angeles, California 90095, United States
| | - Shaily Mahendra
- Department of Civil and Environmental Engineering, University of California, Los Angeles, 580 Portola Plaza, Los Angeles, California 90095, United States
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Tang B, Cao M, Yang Y, Guan J, Yao Y, Yi J, Dong J, Wang T, Wang L. Synthesis of KH550-Modified Hexagonal Boron Nitride Nanofillers for Improving Thermal Conductivity of Epoxy Nanocomposites. Polymers (Basel) 2023; 15:polym15061415. [PMID: 36987196 PMCID: PMC10058683 DOI: 10.3390/polym15061415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/03/2023] [Accepted: 03/11/2023] [Indexed: 03/16/2023] Open
Abstract
In this work, KH550 (γ-aminopropyl triethoxy silane)-modified hexagonal boron nitride (BN) nanofillers were synthesized through a one-step ball-milling route. Results show that the KH550-modified BN nanofillers synthesized by one-step ball-milling (BM@KH550-BN) exhibit excellent dispersion stability and a high yield of BN nanosheets. Using BM@KH550-BN as fillers for epoxy resin, the thermal conductivity of epoxy nanocomposites increased by 195.7% at 10 wt%, compared to neat epoxy resin. Simultaneously, the storage modulus and glass transition temperature (Tg) of the BM@KH550-BN/epoxy nanocomposite at 10 wt% also increased by 35.6% and 12.4 °C, respectively. The data calculated from the dynamical mechanical analysis show that the BM@KH550-BN nanofillers have a better filler effectiveness and a higher volume fraction of constrained region. The morphology of the fracture surface of the epoxy nanocomposites indicate that the BM@KH550-BN presents a uniform distribution in the epoxy matrix even at 10 wt%. This work guides the convenient preparation of high thermally conductive BN nanofillers, presenting a great application potential in the field of thermally conductive epoxy nanocomposites, which will promote the development of electronic packaging materials.
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Affiliation(s)
- Bolin Tang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Miao Cao
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yaru Yang
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Jipeng Guan
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yongbo Yao
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Jie Yi
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Jun Dong
- Nanotechnology Research Institute, School of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Tianle Wang
- Zhejiang Provincial Key Laboratory for Cutting Tools, School of Materials Science and Engineering, Taizhou University, Taizhou 318000, China
- College of Chemical and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
- Correspondence: (T.W.); (L.W.)
| | - Luxiang Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
- Correspondence: (T.W.); (L.W.)
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Amino Acid-Assisted Sand-Milling Exfoliation of Boron Nitride Nanosheets for High Thermally Conductive Thermoplastic Polyurethane Composites. Polymers (Basel) 2022; 14:polym14214674. [DOI: 10.3390/polym14214674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
Boron nitride nanosheets (BNNSs) show excellent thermal, electrical, optical, and mechanical properties. They are often used as fillers in polymers to prepare thermally conductive composites, which are used in the production of materials for thermal management, such as electronic packaging. Aside from the van der Waals force, there are some ionic bond forces between hexagonal boron nitride (h-BN) layers that result in high energy consumption and make BNNSs easily agglomerate. To overcome this issue, L-lysine (Lys) was first employed as a stripping assistant for preparing graft-functionalized BNNSs via mechanical sand-milling technology, and the obtained Lys@BNNSs can be added into thermoplastic polyurethane (TPU) by solution mixing and hot-pressing methods to prepare thermally conductive composites. This green and scalable method of amino acid-assisted sand-milling can not only exfoliate the bulk h-BN successfully into few-layer BNNSs but also graft Lys onto the surface or edges of BNNSs through Lewis acid–base interaction. Furthermore, benefiting from Lys’s highly reactive groups and biocompatibility, the compatibility between functionalized BNNSs and the TPU matrix is significantly enhanced, and the thermal conductivity and mechanical properties of the composite are remarkably increased. When the load of Lys@BNNSs is 3 wt%, the thermal conductivity and tensile strength of the obtained composites are 90% and 16% higher than those of the pure TPU, respectively. With better thermal and mechanical properties, Lys@BNNS/TPU composites can be used as a kind of heat dissipation material and have potential applications in the field of thermal management materials.
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Wu N, Yang W, Li H, Che S, Gao C, Jiang B, Li Z, Xu C, Wang X, Li Y. Amino acid functionalized boron nitride nanosheets towards enhanced thermal and mechanical performance of epoxy composite. J Colloid Interface Sci 2022; 619:388-398. [DOI: 10.1016/j.jcis.2022.03.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/01/2022] [Accepted: 03/25/2022] [Indexed: 10/18/2022]
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Li S, Lu X, Lou Y, Liu K, Zou B. The Synthesis and Characterization of h-BN Nanosheets with High Yield and Crystallinity. ACS OMEGA 2021; 6:27814-27822. [PMID: 34722981 PMCID: PMC8552327 DOI: 10.1021/acsomega.1c03406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/24/2021] [Indexed: 05/06/2023]
Abstract
Nowadays, boron nitride (BN) has attracted a great deal of attention due to its physical and chemical properties, such as high-temperature resistance, oxidation resistance, heat conduction, electrical insulation, and neutron absorption. The unique lamellar, reticular, and tubular morphologies and physicochemical properties of BN make it attractive in the fields of adsorption, catalysis, hydrogen storage, thermal conduction, insulation, dielectric substrate of electronic devices, radiation protection, polymer composites, medicine, etc. Based on this, we propose a novel method to produce boron nitride nanosheets (BNNSs) by a two-step method. The structure and morphology of the prepared BNNSs were characterized by scanning electron microscopy, transmission electron microscopy, atomic force microscopy, XRD, FTIR, etc. The results showed that the prepared BNNSs had high crystallinity and the stripping efficiency of h-BN as well as the performance and yield of BNNSs had been improved, and the cost and environmental pollution of BNNS preparation had been reduced accordingly.
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Affiliation(s)
- Shaocheng Li
- Department of Chemical Engineering, Eastern Liaoning University, Dandong 118001, China
| | - Xianlang Lu
- Department of Chemical Engineering, Eastern Liaoning University, Dandong 118001, China
| | - Yanda Lou
- Department of Chemical Engineering, Eastern Liaoning University, Dandong 118001, China
| | - Kejun Liu
- Department of Chemical Engineering, Eastern Liaoning University, Dandong 118001, China
| | - Benxue Zou
- Department of Chemical Engineering, Eastern Liaoning University, Dandong 118001, China
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Gautam C, Chelliah S. Methods of hexagonal boron nitride exfoliation and its functionalization: covalent and non-covalent approaches. RSC Adv 2021; 11:31284-31327. [PMID: 35496870 PMCID: PMC9041435 DOI: 10.1039/d1ra05727h] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 08/26/2021] [Indexed: 12/31/2022] Open
Abstract
The exfoliation of two-dimensional (2D) hexagonal boron nitride nanosheets (h-BNNSs) from bulk hexagonal boron nitride (h-BN) materials has received intense interest owing to their fascinating physical, chemical, and biological properties. Numerous exfoliation techniques offer scalable approaches for harvesting single-layer or few-layer h-BNNSs. Their structure is very comparable to graphite, and they have numerous significant applications owing to their superb thermal, electrical, optical, and mechanical performance. Exfoliation from bulk stacked h-BN is the most cost-effective way to obtain large quantities of few layer h-BN. Herein, numerous methods have been discussed to achieve the exfoliation of h-BN, each with advantages and disadvantages. Herein, we describe the existing exfoliation methods used to fabricate single-layer materials. Besides exfoliation methods, various functionalization methods, such as covalent, non-covalent, and Lewis acid-base approaches, including physical and chemical methods, are extensively described for the preparation of several h-BNNS derivatives. Moreover, the unique and potent characteristics of functionalized h-BNNSs, like enhanced solubility in water, improved thermal conductivity, stability, and excellent biocompatibility, lead to certain extensive applications in the areas of biomedical science, electronics, novel polymeric composites, and UV photodetectors, and these are also highlighted.
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Affiliation(s)
- Chandkiram Gautam
- Advanced Glass and Glass Ceramics Research Laboratory, Department of Physics, University of Lucknow Lucknow 226007 Uttar Pradesh India
| | - Selvam Chelliah
- Department of Pharmaceutical Sciences, Texas Southern University Houston USA
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Shang Z, Ding D, Wang X, Liu B, Chen Y, Gong L, Liu Z, Zhang Q. High thermal conductivity of self‐healing polydimethylsiloxane elastomer composites by the orientation of boron nitride nano sheets. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5467] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Zhihui Shang
- School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Macromolecular Science and Technology, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Northwestern Polytechnical University Xi'an China
| | - Dongliang Ding
- School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Macromolecular Science and Technology, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Northwestern Polytechnical University Xi'an China
| | - Xu Wang
- School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Macromolecular Science and Technology, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Northwestern Polytechnical University Xi'an China
| | - Bingru Liu
- Queen Mary University of London Engineering School Northwestern Polytechnical University Xi'an China
| | - Yanhui Chen
- School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Macromolecular Science and Technology, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Northwestern Polytechnical University Xi'an China
| | - Lei Gong
- Ningbo Institute of Northwestern Polytechnical University Ningbo China
- Institute of Flexible Electronics Northwestern Polytechnical University Xi'an China
| | - Zhenguo Liu
- Ningbo Institute of Northwestern Polytechnical University Ningbo China
- Institute of Flexible Electronics Northwestern Polytechnical University Xi'an China
| | - Qiuyu Zhang
- School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Macromolecular Science and Technology, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology Northwestern Polytechnical University Xi'an China
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Wang B, Ji H, Zhang X, Qu X. Preparation of boron nitride nanosheets via polyethyleneimine assisted sand milling: towards thermal conductivity and insulation applications. RSC Adv 2021; 11:38374-38382. [PMID: 35493264 PMCID: PMC9044043 DOI: 10.1039/d1ra05878a] [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: 08/03/2021] [Accepted: 11/13/2021] [Indexed: 11/21/2022] Open
Abstract
The PEI-grafted boron nitride nanosheets were successfully prepared via sand-milling process, which were doped into thermoplastic polyurethane matrix for better in-plane thermal conductivity while maintaining insulation properties.
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Affiliation(s)
- Bing Wang
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Haifeng Ji
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Xiaojie Zhang
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
| | - Xiongwei Qu
- Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, Hebei University of Technology, 8 Guangrong Street, Tianjin, 300130, P. R. China
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