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Simultaneous Production and Functionalization of Boron Nitride Nanosheets by Sugar-Assisted Mechanochemical Exfoliation
Chen, Shaohua; Xu, Runzhang; Liu, Jiaman; Zou, Xiaolong; Qiu, Ling; Kang, Feiyu; Liu, Bilu; Cheng, Hui-Ming
2019-03-08
Source PublicationADVANCED MATERIALS
ISSN0935-9648
Volume31Issue:10
AbstractDue to their extraordinary properties, boron nitride nanosheets (BNNSs) have great promise for many applications. However, the difficulty of their efficient preparation and their poor dispersibility in liquids are the current factors that limit this. A simple yet efficient sugar-assisted mechanochemical exfoliation (SAMCE) method is developed here to simultaneously achieve their exfoliation and functionalization. This method has a high actual exfoliation yield of 87.3%, and the resultant BNNSs are covalently grafted with sugar (sucrose) molecules, and are well dispersed in both water and organic liquids. A new mechanical force-induced exfoliation and chemical grafting mechanism is proposed based on experimental and density functional theory investigations. Thanks to the good dispersibility of the nanosheets, flexible and transparent BNNS/poly(vinyl alcohol) (PVA) composite films with multifunctionality is fabricated. Compared to pure PVA films, the composite films have a remarkably improved tensile strength and thermal dissipation capability. Noteworthy, they are flame retardant and can effectively block light from the deep blue to the UV region. This SAMCE production method has proven to be highly efficient, green, low cost, and scalable, and is extended to the exfoliation and functionalization of other two-dimensional (2D) materials including MoS2, WS2, and graphite.
Keyword2D materials boron nitride flexible thermal conductive composites functionalization mechanochemical exfoliation
Indexed BySCI
Language英语
WOS IDWOS:000460329300025
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:50[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81287
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Chen, Shaohua,Xu, Runzhang,Liu, Jiaman,et al. Simultaneous Production and Functionalization of Boron Nitride Nanosheets by Sugar-Assisted Mechanochemical Exfoliation[J]. ADVANCED MATERIALS,2019,31(10).
APA Chen, Shaohua.,Xu, Runzhang.,Liu, Jiaman.,Zou, Xiaolong.,Qiu, Ling.,...&Cheng, Hui-Ming.(2019).Simultaneous Production and Functionalization of Boron Nitride Nanosheets by Sugar-Assisted Mechanochemical Exfoliation.ADVANCED MATERIALS,31(10).
MLA Chen, Shaohua,et al."Simultaneous Production and Functionalization of Boron Nitride Nanosheets by Sugar-Assisted Mechanochemical Exfoliation".ADVANCED MATERIALS 31.10(2019).
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