Quantification of hexagonal boron nitride impurities in boron …
We propose and demonstrate that FTIR peak ratios of the transverse and buckling modes of mixed h-BN/BNNT samples can be used to calibrate and quantify h-BN content in any BNNT sample. Hopefully, this method enables as-received BNNTs to be quantifiably enriched from low purity commercial feedstocks, enabling future development and study of BNNTs ...
Fundamental structural study of hexagonal boron nitride (h-BN) …
2025年1月5日 · In-situ X-ray diffraction (XRD) for h-BN and BNNT at high temperatures (up to 800 °C) was performed using a SmartLab diffractometer (Rigaku) with a D/teX Ultra 250 detector. The XRD patterns were acquired using Cu Kα radiation (λ …
XRD pattern of the as-synthesized BNNTs. - ResearchGate
Cylinder- and bamboo-shaped boron nitride nanotubes (BNNTs) have been synthesized in large scale via a facile chemical vapor reaction route using ammonia borane as a precursor.
Purification of boron nitride nanotubes by functionalization and ...
2021年7月30日 · XRD analysis data of purified BNNTs, amorphous boron-removed BNNTs, raw BNNTs, and h-BN heat dissipating bioinspired composites for printed circuit board with thermal conductivity of 30 W/mK) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).
Quantitative Characterization of Structural and Mechanical …
2017年9月12日 · In this paper, we perform an extensive study of the impacts of high temperature exposure on the structural and mechanical properties of BNNTs with a full structural size spectrum from nano- to...
The XRD pattern of BN powder before and after microwave …
The XRD data confirmed 33.30% increase crystallite size in treated BN powder as compared to control. The surface area data showed 10.33% increment in surface area of treated BN as compared to...
XRD pattern of BNNT, EB and EB/BNNT composite
X-ray Diffraction (XRD), FTIR and Raman spectroscopy confirms the spinel NiCo2O4 structure having a single cubic phase with the Fd3m space group of synthesized sample.
六方氮化硼（h-BN）和氮化硼纳米管（BNNT）在低温和高温下的 …
在本研究中，应用表征技术（例如拉曼光谱、X 射线衍射 (XRD) 和傅里叶变换红外光谱 (FTIR)）来研究 BNNT 和 h-BN 在高温（高达 800 ℃）下的结构变化。 °C）和低温（低至-50 °C）。 拉曼光谱结果表明，在高温（800℃）下，h-BN在惰性和氧化条件下均表现出明显的红移，而BNNT则没有出现峰移，表明其与h-BN相比具有更稳定的结构电阻。 冷却至低温（-50°C）后，h-BN 和 BNNT 均未表现出峰移。 热重分析 (TGA) 和 FTIR 光谱结果揭示了 h-BN 和 BNNT 在 800 °C …
Oxidative Unzipping and Transformation of High Aspect Ratio …
2016年7月8日 · X-Ray Diffraction (XRD) analysis of BNNT before and after TGA-DSC thermal treatment up to peak temperatures of 500, 750 and 1000 °C was performed to closely monitor the...
Fundamental structural study of hexagonal boron nitride (h-BN) …
2025年1月5日 · In this study, ex-situ and in-situ characterization techniques (e.g., Raman spectroscopy, X-ray Diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR)) were applied to investigate the structural change of BNNT and h-BN at high (up to 800 °C) and low (down to -50 °C) temperatures.