TY - JOUR
T1 - The Roles of Impurities and Surface Area on Thermal Stability and Oxidation Resistance of BN Nanoplatelets
AU - Kostoglou, Nikolaos
AU - Stock, Sebastian
AU - Solomi, Angelos
AU - Holzapfel, Damian M.
AU - Hinder, Steven J.
AU - Baker, Mark
AU - Constantinides, Georgios
AU - Ryzhkov, Vladislav
AU - Maletaskic, Jelena
AU - Matovic, Branko
AU - Schneider, Jochen M.
AU - Rebholz, Claus
AU - Mitterer, Christian
N1 - Publisher Copyright: © 2024 by the authors.
PY - 2024/3/28
Y1 - 2024/3/28
N2 - This study considers the influence of purity and surface area on the thermal and oxidation properties of hexagonal boron nitride (h-BN) nanoplatelets, which represent crucial factors in high-temperature oxidizing environments. Three h-BN nanoplatelet-based materials, synthesized with different purity levels and surface areas (~3, ~56, and ~140 m
2/g), were compared, including a commercial BN reference. All materials were systematically analyzed by various characterization techniques, including gas pycnometry, scanning electron microscopy, X-ray diffraction, Fourier-transform infrared radiation, X-ray photoelectron spectroscopy, gas sorption analysis, and thermal gravimetric analysis coupled with differential scanning calorimetry. Results indicated that the thermal stability and oxidation resistance of the synthesized materials were improved by up to ~13.5% (or by 120 °C) with an increase in purity. Furthermore, the reference material with its high purity and low surface area (~4 m
2/g) showed superior performance, which was attributed to the minimized reactive sites for oxygen diffusion due to lower surface area availability and fewer possible defects, highlighting the critical roles of both sample purity and accessible surface area in h-BN thermo-oxidative stability. These findings highlight the importance of focusing on purity and surface area control in developing BN-based nanomaterials, offering a path to enhance their performance in extreme thermal and oxidative conditions.
AB - This study considers the influence of purity and surface area on the thermal and oxidation properties of hexagonal boron nitride (h-BN) nanoplatelets, which represent crucial factors in high-temperature oxidizing environments. Three h-BN nanoplatelet-based materials, synthesized with different purity levels and surface areas (~3, ~56, and ~140 m
2/g), were compared, including a commercial BN reference. All materials were systematically analyzed by various characterization techniques, including gas pycnometry, scanning electron microscopy, X-ray diffraction, Fourier-transform infrared radiation, X-ray photoelectron spectroscopy, gas sorption analysis, and thermal gravimetric analysis coupled with differential scanning calorimetry. Results indicated that the thermal stability and oxidation resistance of the synthesized materials were improved by up to ~13.5% (or by 120 °C) with an increase in purity. Furthermore, the reference material with its high purity and low surface area (~4 m
2/g) showed superior performance, which was attributed to the minimized reactive sites for oxygen diffusion due to lower surface area availability and fewer possible defects, highlighting the critical roles of both sample purity and accessible surface area in h-BN thermo-oxidative stability. These findings highlight the importance of focusing on purity and surface area control in developing BN-based nanomaterials, offering a path to enhance their performance in extreme thermal and oxidative conditions.
KW - hexagonal boron nitride
KW - nanomaterials
KW - nanoplatelets
KW - nanostructures
KW - oxidation resistance
KW - purity
KW - surface area
KW - thermal stability
UR - http://www.scopus.com/inward/record.url?scp=85190108700&partnerID=8YFLogxK
U2 - 10.3390/nano14070601
DO - 10.3390/nano14070601
M3 - Article
SN - 2079-4991
VL - 14.2024
JO - Nanomaterials
JF - Nanomaterials
IS - 7
M1 - 601
ER -