ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

High-temperature stability of boron nitride nanowires synthesized by the O’Connor method under various gas atmospheres

Muhammed Öz

Chemistry and Chemical Processing Technology, Bolu Abant İzzet Baysal University, Bolu, Turkey

E-mail: oz_m@ibu.edu.tr

Received: 27 July 2025  Accepted: 17 November 2025

Abstract:

The thermal stability of boron nitride nanowires (BNNWs) synthesized by the O’Connor method was comprehensively investigated under different gaseous environments, including nitrogen, argon, and ambient air. Prior to thermal evaluation, the nanowire morphology and crystalline structure were confirmed using Fourier-transform infrared spectroscopy, X-ray diffraction (XRD), scanning electron microscopy, and high-resolution transmission electron microscopy. These analyses verified the successful formation of boron nitride nanowires with high structural uniformity and purity. The average crystallite sizes of the BNNWs were determined to be 9–38 nm using the Debye–Scherrer equation based on XRD data, indicating a controlled nanoscale growth of the material. Thermal behavior was assessed by TGA/DSC from 30 to 1400 °C. The nanowires remained stable up to 1200 °C in all atmospheres and up to 1400 °C under nitrogen and argon. Exothermic peaks were observed in air and argon, while endothermic transitions appeared in nitrogen. Above 1200 °C in air, the structure decomposed into boron oxide and gaseous products. These results indicate that O’Connor-derived BNNWs are thermally stable up to 1200 °C in air and 1400 °C in inert atmospheres, supporting their potential use in high-temperature applications.

Keywords: Boron nitride nanowire; Thermal gravimetric analysis; Thermal decomposition; Characterization; Air and inert atmosphere

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04527-1

Chemical Papers 80 (3) 2495–2507 (2026)