Facile synthesis of 3D boron nitride nanoflowers composed of vertically aligned nanoflakes and fabrication of graphene-like BN by exfoliation
Facile synthesis of 3D boron nitride nanoflowers composed of vertically aligned nanoflakes and fabrication of graphene-like BN by exfoliation
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DOI：
10.1039/c0jm04503a
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发表时间：
2011-01-01
影响因子：
--
通讯作者：
Wang, Qilong
中科院分区：
文献类型：
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作者：
Lian, Gang;Zhang, Xiao;Wang, Qilong
在这里，我们提出了一种简便的固相方法，用于制备独特的 3D 六方氮化硼 (hBN) 纳米花，该纳米花由垂直排列的 BN 纳米薄片组成。通过适当改变反应时间可以很好地控制BN纳米花的生长过程，并且可以通过延迟释放机制来解释。这些BN纳米花具有良好的热稳定性和高比表面积。此外，组成纳米花的纳米片可以很容易地剥离成少层石墨烯类BN，并且很容易分散在强极性有机溶剂中。通过FTIR光谱和理论计算，认为BN纳米片和溶剂的相互作用主要引起类石墨烯BN的剥离。此外，类石墨烯BN薄膜表现出超疏水性，接触角为140度。
Here, we present a facile solid phase method for preparing unique, 3D hexagonal boron nitride (hBN) nanoflowers, which are composed of vertically aligned BN nanoflakes. The growth process of BN nanoflowers is well-controlled by appropriately changing the reaction times and can be explained by a delayed-release mechanism. These BN nanoflowers present good thermal stability and high specific surface area. In addition, the nanoflakes composing the nanoflowers can be easily exfoliated into few-layered graphene-like BN, which is readily dispersible in strong polar organic solvents. By FTIR spectra and theoretical calculation, it is believed that the interaction of BN nanosheet and solvent predominately induces the exfoliation of graphene-like BN. Furthermore, the graphene-like BN film displays superhydrophobicity with a contact angle of 140 degrees.