In situ FTIR investigation on phase transformations in BN nanoparticles

• Published in: Chinese science bulletin Vol. 50; no. 24; pp. 2827 - 2831
• Main Authors: Yu, Lili, Gao, Bin, Chen, Zhi, Sun, Chuantao, Cui, Deliang, Wang, Chengjian, Wang, Qilong, Jiang, Minhua
• Format: Journal Article
• Language: English
• Published: Beijing Springer Nature B.V 01.12.2005; State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China; School of Physics and Microelectronics, Shandong University, Jinan 250100, China%State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China%State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China; School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China%School of Physics and Microelectronics, Shandong University, Jinan 250100, China%School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
• Subjects: Fourier transforms; Infrared spectroscopy; Nanoparticles; Phase transitions; 傅里叶变换红外光谱; 原位监测; 氮化硼纳米粒子; in-situ monitoring; BN nanoparticles; phase transformation; IR spectrum
• ISSN: 1001-6538; 2095-9273; 1861-9541; 2095-9281
• DOI: 10.1360/982005-570

Fourier transformation infrared spectrum （FTIR） was employed to investigate phase transformation of nanoparticle BN, containing eBN, rBN, wBN and cBN, in which eBN and rBN are the main components. We found that part of eBN was converted into rBN at 200--350℃. At and above 400℃, eBN transformed into wBN, and some of wBN were converted into cBN simultaneously. This conclusion is supported by the results from high- resolution transmission electron microscopic （HRTEM） and Raman spectroscopic measurements. In this work, the converting processes between different BN phases were continuously monitored by in situ FTIR spectroscopy. The results will be helpful for synthesis of cBN at moderate conditions.