Preparation of transparent BN films with superhydrophobic surface

Li, Guoxing; Liu, Yi; Wang, Bo; Song, Xuemei; Li, Er; Yan, Hui

doi:10.1016/j.apsusc.2008.01.170

Cited by 53 publications

(40 citation statements)

References 33 publications

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“…Indeed, both simulations and experiments recently demonstrate the weak hydrophobicity of BN layers due to the polarity of the B-N bond, 44,45 while modification of the surface roughness of BN thin films lead to the drastic increase of the CA from 67° to 159°. 46 Vertically grown BN nanotubes on silicon substrate also display super-hydrophobic bahavior. 44,47 Stability of the material properties over time, storage and use conditions is a key parameter for usability and lifetime of the material.…”

Section: Characterization Of Obtained Bn Nanotubesmentioning

confidence: 99%

Promising properties of ALD boron nitride nanotube mats for water purification

Hao

Marichy

Brioude

2017

Environ. Sci.: Nano

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Section: Characterization Of Obtained Bn Nanotubesmentioning

confidence: 99%

Promising properties of ALD boron nitride nanotube mats for water purification

Hao

Marichy

Brioude

2017

Environ. Sci.: Nano

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“…The water contact angle (WCA) measured on h‐BN film is only around 50°, which is significantly lower than the 86° predicted theoretically . The origination of this large variation is not clear, but the large amounts of defects in the h‐BN film fabricated by pulsed‐laser deposition and magnetron sputtering may be an important factor . Although polar BN bonds result in a sizable local in‐plane dipole moment, there is no notable dipoles normal to the ideal h‐BN plane, in sharp contrast to the surface of cubic BN surface .…”

Section: Introductionmentioning

confidence: 99%

Wettability of Supported Monolayer Hexagonal Boron Nitride in Air

Qiu

Liu

et al. 2016

Adv Funct Materials

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Hexagonal boron nitride (h‐BN), a wide band gap monolayer crystal with structure similar to graphene, is optically transparent with exceptionally high thermal and chemical stability, and should be ideal to serve as an atomically thin coating. However, limited by the challenges in fabricating h‐BN of high quality in large area, the wetting performance of h‐BN has seldom been studied. Here, it is shown that the water contact angle of freshly grown h‐BN film is nearly independent of the underlying materials as well as the h‐BN layer number, but increases gradually to a saturated stable value in air due to the spontaneous adsorption of airborne hydrocarbon. First‐principles calculations and molecular interaction modeling confirm that a monolayer h‐BN coating does efficiently tune the interaction of a water molecule with different substrates to a converging level. The saturated wettability of h‐BN coating is robust against variation of several factors, facilitating its practical applications.

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“…The measured CA is in agreement even slightly higher than typically reported values ranging from 50 to 67°. [44][45][46] Full spreading with CA ~ 0° is noted with organic solvent such as hexane and dichloromethane (Figure 5c) thus showing the lipophilic character of the film.…”

Section: Wetting Properties and Water Filtrationmentioning

confidence: 99%

A Novel Two‐Step Ammonia‐Free Atomic Layer Deposition Approach for Boron Nitride

et al. 2017

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Due to their high potential in energy and environment domains, synthetic approach allowing fabrication of high quality boron nitride (BN) structures in a controlled manner is of great interest. Herein, a two-step ammonia-free atomic layer deposition approach of BN, based on polymer derived ceramics chemistry is reported for the first time. Using trichloroborazine and hexamethyldisilazane as precursors, conformal pre-ceramic polymer layer is grown at low temperature, 80 °C, and then converted into dense hexagonal BN (h-BN). The present approach allows conformal and homogeneous deposition of h-BN films on various substrates with a thickness control at the atomic scale. It proves to be successful for fabricating various tuned BN nanostructures and composites that showed to be efficient in water purification. In particular, the obtained nanostructures demonstrate high hydrophobicity and they are investigated as water filter for organic/water separation. Good separation efficiency is demonstrated that highlights the high potential of such atomic layer deposition (ALD) structures in water treatment.

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Preparation of transparent BN films with superhydrophobic surface

Cited by 53 publications

References 33 publications

Promising properties of ALD boron nitride nanotube mats for water purification

Promising properties of ALD boron nitride nanotube mats for water purification

Wettability of Supported Monolayer Hexagonal Boron Nitride in Air

A Novel Two‐Step Ammonia‐Free Atomic Layer Deposition Approach for Boron Nitride

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