A facile chemical exfoliation method to obtain large size boron nitride nanosheets

Du, Miao; Wu, Yongzhong; Hao, Xiaopeng

doi:10.1039/c2ce26446c

Cited by 202 publications

(146 citation statements)

References 25 publications

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“…5a (similar to the data of BN before thermal exfoliation, not shown here) could be ascribed to the exposure of BNNSs to atmosphere or the XPS measurements, which is common for XPS analysis. 15 Besides, FT-IR and Raman analyses were further used to characterize the lattice vibration modes of the BNNSs. In the FT-IR spectrum shown in Figure 6(a), only two peaks centered at 1381 cm -1 and 815 cm -1 can be observed, assigned to in-plane B-N stretching (in-plane ring vibration, the E 1u mode) and B-N bending (out-of-plane vibration, A 2u mode), respectively.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Hexagonal Boron Nitride Nanosheets by Using a Simple Thermal Exfoliation Process

Chen

2016

J Chinese Chemical Soc

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A simple and inexpensive method to exfoliate boron nitride powder to form boron nitride nanosheets (BNNSs) with few layers was achieved by using a physically thermal process. The obtained BNNSs were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), IR spectroscopy, and Raman spectroscopy. The size distribution of the sheets and average sheet size is in the range of 80-380 nm and 200 ± 62 nm, respectively, and the pure phase h-BN products were confirmed. XPS result showed the B/N atomic ratio to be 0.99. In addition, the BNNSs can well disperse in aqueous solution to form a cloudy suspension and importantly, can remain suspended for 1 month without precipitate, which would have good potential in a wide range of applications.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Hexagonal Boron Nitride Nanosheets by Using a Simple Thermal Exfoliation Process

Chen

2016

J Chinese Chemical Soc

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“…For example, BNNSs can be used as a two-dimensional filler, [5] nonwetting coatings, [6] field emitters, [7] and an ideal substrate for high-quality graphene electronics. [13][14][15] The published studies on the possible magnetic properties of fluorinated BNNSs (F-BNNSs) or boron nitride nanotubes (F-BNNTs) are of theoretical nature. In recent experimental studies, monolayer and few-layer BNNSs have been successfully prepared from bulk h-BN powder by the mechanical milling method, [9] chemical vapour deposition, [10,11] molten hydroxides method, [12] and chemical-solution-derived method.…”

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confidence: 99%

One‐Step Exfoliation and Fluorination of Boron Nitride Nanosheets and a Study of Their Magnetic Properties

Wang

et al. 2014

Angew Chem Int Ed

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A novel, simple, and efficient method for the preparation of the fluorinated hexagonal boron nitride nanosheets (F-BNNSs) and the corresponding magnetic properties is presented. A one-step route is used to exfoliate and fluorinate the BNNSs by ammonium fluoride (NH4F) from hexagonal boron nitride (h-BN) powder. Through related instrument characterizations and theoretical calculations, we confirm that large-area and few-layer F-BNNSs were successfully produced by this method, which can be attributed to a fluorination-assisted exfoliation mechanism from the bulk h-BN in NH4F. More intriguingly, we initially verified that the as-prepared F-BNNSs exhibit ferromagnetic characteristics, which would have good potential applications in spintronic devices.

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“…In addition, the prominent peaks implicated in h-BN structure and reflection peak of (002) and (004) were manifested at 26.4° and 54.8°, respectively, as shown in XRD spectrum of Fig. S3(b)34. After etching, on the other hand, the two peaks (44.4° and 51.9°) corresponded to the (111) and (200) planes of the nickel disappeared in the XRD spectrum, implying the removal of nickel catalyst35.…”

Section: Discussionmentioning

confidence: 87%

Facile Synthesis of Highly Crystalline and Large Areal Hexagonal Boron Nitride from Borazine Oligomers

Park

Seo

Cho

et al. 2017

Sci Rep

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A novel and facile synthetic method for h-BN films from borazine oligomer (B3N3H4)x precursors has been developed. This method only includes spin-coating of borazine oligomer onto nickel catalysts and a subsequent annealing step. Large areal and highly crystalline h-BN films were obtained. The stoichiometric B/N ratio of borazine oligomer precursor was preserved in the final h-BN product such that it was close to 1 as revealed by XPS. Catalytic effect of nickel for h-BN formation was clearly demonstrated by lowering crystallization temperature compared to the growth condition in the absence of catalyst. The graphene field effect transistor (GFET) characterization has proved the high quality synthesis of h-BN films, showing the shift of neutrality point and the increase of the mobility. This method can also provide functional h-BN coating on various surfaces by annealing Ni-coated borazine oligomer films and subsequent removal of Ni catalyst.

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A facile chemical exfoliation method to obtain large size boron nitride nanosheets

Cited by 202 publications

References 25 publications

Fabrication of Hexagonal Boron Nitride Nanosheets by Using a Simple Thermal Exfoliation Process

Fabrication of Hexagonal Boron Nitride Nanosheets by Using a Simple Thermal Exfoliation Process

One‐Step Exfoliation and Fluorination of Boron Nitride Nanosheets and a Study of Their Magnetic Properties

Facile Synthesis of Highly Crystalline and Large Areal Hexagonal Boron Nitride from Borazine Oligomers

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