期刊
ACS NANO
卷 8, 期 10, 页码 9867-9873出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn504809n
关键词
boron nitride nanotubes; potassium splitting; boron nitride nanoribbons
类别
资金
- Air Force Research Laboratory through University Technology Corporation [09-S568-064-01-C1]
- Air Force Office of Scientific Research [FA9550-09-1-0581]
- Office of Naval Research MURI Graphene Program [N00014-09-1-1066]
- Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy [DE-AC02-05CH11231]
- Center of Integrated Nanomechanical Systems under NSF Grant [EED-0832819]
- NIMS [BE063]
- NSF through Nebraska MRSEC [DMR-0820521]
- EPSCoR [EPS-1004094]
- EPSCoR [1004094] Funding Source: National Science Foundation
- Office Of The Director [1004094] Funding Source: National Science Foundation
Boron nitride nanoribbons (BNNRs) are theorized to have interesting electronic and magnetic properties, but their high-yield synthesis remains challenging. Here we demonstrate that potassium-induced splitting of BN nanotubes (BNNTs) is an effective high-yield method to obtain bulk quantities of high-quality BNNRs if a proper precursor material is chosen. The resulting BNNRs are crystalline; many of them have a high aspect ratio and straight parallel edges. We have observed numerous few-layer and monolayer BNNRs; the multilayered ribbons predominantly have an AA' stacking. We present a detailed microscopy study of BNNRs that provides important insights into the mechanism of the formation of BNNRs from BNNTs. We also demonstrate that the BNNTs prepared by different synthetic approaches could exhibit dramatically different reactivities in the potassium splitting reaction, which highlights the need for future comparison studies of BN nanomaterials prepared using different methods to better understand their preparation-dependent physical and chemical properties.
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