Crystalline boron nitride nanosheets by sonication-assisted hydrothermal exfoliation
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摘要
A simple method to prepare two-dimensional hexagonal boron nitride(h-BN) scalably is essential for practical applications. Despite intense research in this area, high-yield production of two-dimensional h-BN with large size and high crystallinity is still a key challenge. In the present work, we propose a simple exfoliation process for boron nitride nanosheets(BNNSs) with high crystallinity by sonication-assisted hydrothermal method, via the synergistic effect of the high pressure, and cavitation of the sonication. Compared with the method only by sonication, the sonication-assisted hydrothermal method can get the fewer-layer BNNSs with high crystallinity.Meanwhile, it can reach higher yield of nearly 1.68%, as the hydrothermal method with the yield of only 0.12%. The simple sonication-assisted hydrothermal method has potential applications in exfoliating other layered materials, thus opening new ways to produce other layered materials in high yield and high crystallinity.
A simple method to prepare two-dimensional hexagonal boron nitride(h-BN) scalably is essential for practical applications. Despite intense research in this area, high-yield production of two-dimensional h-BN with large size and high crystallinity is still a key challenge. In the present work, we propose a simple exfoliation process for boron nitride nanosheets(BNNSs) with high crystallinity by sonication-assisted hydrothermal method, via the synergistic effect of the high pressure, and cavitation of the sonication. Compared with the method only by sonication, the sonication-assisted hydrothermal method can get the fewer-layer BNNSs with high crystallinity.Meanwhile, it can reach higher yield of nearly 1.68%, as the hydrothermal method with the yield of only 0.12%. The simple sonication-assisted hydrothermal method has potential applications in exfoliating other layered materials, thus opening new ways to produce other layered materials in high yield and high crystallinity.
A simple method to prepare two-dimensional hexagonal boron nitride(h-BN) scalably is essential for practical applications. Despite intense research in this area, high-yield production of two-dimensional h-BN with large size and high crystallinity is still a key challenge. In the present work, we propose a simple exfoliation process for boron nitride nanosheets(BNNSs) with high crystallinity by sonication-assisted hydrothermal method, via the synergistic effect of the high pressure, and cavitation of the sonication. Compared with the method only by sonication, the sonication-assisted hydrothermal method can get the fewer-layer BNNSs with high crystallinity.Meanwhile, it can reach higher yield of nearly 1.68%, as the hydrothermal method with the yield of only 0.12%. The simple sonication-assisted hydrothermal method has potential applications in exfoliating other layered materials, thus opening new ways to produce other layered materials in high yield and high crystallinity.
引文
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[18]Du M,Wu Y,Hao X.A facile chemical exfoliation method to obtain large size boron nitride nanosheets.Cryst Eng Comm2013,15:1782-1786.
[19]Coleman JN,Lotya M,O'Neill A,et al.Two-dimensional nanosheets produced by liquid exfoliation of layered materials.Science 2011,331:568-571.
[20]Gorbachev RV,Riaz I,Nair RR,et al.Hunting for monolayer boron nitride:Optical and Raman signatures.Small 2011,7:465-468.
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[24]Lee KH,Shin H-J,Lee J,et al.Large-scale synthesis of high-quality hexagonal boron nitride nanosheets for large-area graphene electronics.Nano Lett 2012,12:714-718.
[25]Liu X,Zheng M,Xiao K,et al.Simple,green and high-yield production of single-or few-layer graphene by hydrothermal exfoliation of graphite.Nanoscale 2014,6:4598-4603.
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[29]Zhu W,Gao X,Li Q,et al.Controlled gas exfoliation of boron nitride into few-layered nanosheets.Angew Chem Int Ed 2016,55:10766-10770.
[30]Lin Y,Williams TV,Xu T-B,et al.Aqueous dispersions of few-layered and monolayered hexagonal boron nitride nanosheets from sonication-assisted hydrolysis:Critical role of water.J Phys Chem C 2011,115:2679-2685.
[31]Mason TJ,Lorimer JP.Applied Sonochemistry:The Uses of Power Ultrasound in Chemistry and Processing.WileyVCH Verlag,Weinheim,2002.
[2]Xue Y,Zhang Q,Wang W,et al.Opening two-dimensional materials for energy conversion and storage:A concept.Adv Energy Mater 2017,7:1602684.
[3]Voiry D,Yang J,Kupferberg J,et al.High-quality graphene via microwave reduction of solution-exfoliated graphene oxide.Science 2016,353:1413-1416.
[4]Zheng Z,Cox M,Li B.Surface modification of hexagonal boron nitride nanomaterials:A review.J Mater Sci 2018,53:66-99.
[5]Li P,Shen H,Qian Z,et al.Facile fabrication of flexible layered GO/BNNS composite films with high thermal conductivity.J Mater Sci 2018,53:4189-4198
[6]Lin Y,Connell JW.Advances in 2D boron nitride nanostructures:Nanosheets,nanoribbons,nanomeshes,and hybrids with graphene.Nanoscale 2012,4:6908-6939.
[7]Li Q,Chen L,Gadinski MR,et al.Flexible hightemperature dielectric materials from polymer nanocomposites.Nature 2015,523:576-579.
[8]Lee D,Song SH.Ultra-thin ultraviolet cathodoluminescent device based on exfoliated hexagonal boron nitride.RSCAdv 2017,7:7831-7835.
[9]Marconnet AM,Yamamoto N,Panzer MA,et al.Thermal conduction in aligned carbon nanotube-polymer nanocomposites with high packing density.ACS Nano 2011,5:4818-4825.
[10]Xiao F,Naficy S,Casillas G,et al.Hydrogels:Edgehydroxylated boron nitride nanosheets as an effective additive to improve the thermal response of hydrogels.Adv Mater 2015,27:7247.
[11]Liu Z,Gong Y,Zhou W,et al.Ultrathin high-temperature oxidation-resistant coatings of hexagonal boron nitride.Nat Commun 2013,4:2541-2546.
[12]Lee D,Lee B,Park KH,et al.Scalable exfoliation process for highly soluble boron nitride nanoplatelets by hydroxideassisted ball milling.Nano Lett 2015,15:1238-1244.
[13]Li X,Hao X,Zhao M,et al.Exfoliation of hexagonal boron nitride by molten hydroxides.Adv Mater 2013,25:2200-2204.
[14]Rafiei-Sarmazdeh Z,Jafari SH,Ahmadi SJ,et al.Largescale exfoliation of hexagonal boron nitride with combined fast quenching and liquid exfoliation strategies.J Mater Sci2016,51:3162-3169.
[15]Liu L,Park J,Siegel DA,et al.Heteroepitaxial growth of two-dimensional hexagonal boron nitride templated by graphene edges.Science 2014,343:163-167.
[16]Sajjad M,Ahmadi M,Guinel MJ-F,et al.Large scale synthesis of single-crystal and polycrystalline boron nitride nanosheets.J Mater Sci 2013,48:2543-2549.
[17]Lotya M,Hernandez Y,King PJ,et al.Liquid phase production of graphene by exfoliation of graphite in surfactant/water solutions.J Am Chem Soc 2009,131:3611-3620.
[18]Du M,Wu Y,Hao X.A facile chemical exfoliation method to obtain large size boron nitride nanosheets.Cryst Eng Comm2013,15:1782-1786.
[19]Coleman JN,Lotya M,O'Neill A,et al.Two-dimensional nanosheets produced by liquid exfoliation of layered materials.Science 2011,331:568-571.
[20]Gorbachev RV,Riaz I,Nair RR,et al.Hunting for monolayer boron nitride:Optical and Raman signatures.Small 2011,7:465-468.
[21]Guo H,Gao J,Ishida N,et al.Characterization of twodimensional hexagonal boron nitride using scanning electron and scanning helium ion microscopy.Appl Phys Lett 2014,104:031607.
[22]Nemanich RJ,Solin SA,Martin RM.Light scattering study of boron nitride microcrystals.Phys Rev B 1981,23:6348-6354.
[23]Li C,Wang T,Wu Y,et al.Fabrication of two-dimensional nanosheets via water freezing expansion exfoliation.Nanotechnology 2014,25:495302.
[24]Lee KH,Shin H-J,Lee J,et al.Large-scale synthesis of high-quality hexagonal boron nitride nanosheets for large-area graphene electronics.Nano Lett 2012,12:714-718.
[25]Liu X,Zheng M,Xiao K,et al.Simple,green and high-yield production of single-or few-layer graphene by hydrothermal exfoliation of graphite.Nanoscale 2014,6:4598-4603.
[26]Modell M.Processing methods for the oxidation of organics in supercritical water.U.S.Patent 4,338,199.1982.
[27]Byrappa K,Adschiri T.Hydrothermal technology for nanotechnology.Prog Cryst Growth Ch 2007,53:117-166.
[28]Byrappa K,Yoshimura M.Handbook of Hydrothermal Technology.William Andrew,2012.
[29]Zhu W,Gao X,Li Q,et al.Controlled gas exfoliation of boron nitride into few-layered nanosheets.Angew Chem Int Ed 2016,55:10766-10770.
[30]Lin Y,Williams TV,Xu T-B,et al.Aqueous dispersions of few-layered and monolayered hexagonal boron nitride nanosheets from sonication-assisted hydrolysis:Critical role of water.J Phys Chem C 2011,115:2679-2685.
[31]Mason TJ,Lorimer JP.Applied Sonochemistry:The Uses of Power Ultrasound in Chemistry and Processing.WileyVCH Verlag,Weinheim,2002.