Green synthesis of high-purity hexagonal boron nitride nanoparticles
Abdurakhmonov O. Aripova M. Erkinov F. Abdurakhmonov S. Sharopov U. Karimov M. Kurbanov M. Saidov D. Pędzich Z. Kozien D. Kurniawan T.A. Bondar E.
September 2025Elsevier Ltd
Vacuum
2025#239
Traditional methods, such as chemical vapor deposition (CVD), often require toxic and flammable organic reagents or result in a high carbon footprint, raising both health and environmental concerns. In this paper, we present an improved method for synthesizing hexagonal boron nitride (h-BN) nanoparticles using affordable and widely available precursors, boric acid, and urea. Our approach modifies the conventional techniques by introducing a two-step thermal treatment process, with nitrogen serving as an inert atmosphere and hydrogen as a diffusing agent. The resulting h-BN nanoparticles exhibit remarkable uniformity and high crystallinity. Characterization through scanning and transmission electron microscopy (SEM, TEM), high-resolution TEM (HR-TEM), selected-area electron diffraction (SAED), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) confirmed the formation of amorphous nanoparticles with an average size of 10 nm during the initial heat treatment at 600 °C under a nitrogen atmosphere. Further heat treatment at 1000 °C in a nitrogen-hydrogen gas mixture led to the crystallization of highly uniform h-BN nanoparticles, reducing their size to approximately 6 nm. This method ensures high morphological homogeneity and product purity, making it effective for the large-scale production of h-BN nanoparticles.
Boron nitride , Chemical synthesis , h-BN , Heat treatment , Hexagonal structure , Nanoparticles
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Tashkent Institute of Chemical Technology, Tashkent, 100011, Uzbekistan
Physical-Technical Institute, Uzbekistan Academy of Sciences, Tashkent, 100084, Uzbekistan
Urgench State University, Urgench, 220100, Uzbekistan
Urgench Ranch University of Technology, Urgench, 220100, Uzbekistan
AGH - University of Krakow, Krakow, 30–059, Poland
College of Ecology and Environment, Xiamen University, Fujian, Xiamen, 361102, China
Institute of Physics and Technology, Satbayev University, Almaty, 050013, Kazakhstan
Tashkent Institute of Chemical Technology
Physical-Technical Institute
Urgench State University
Urgench Ranch University of Technology
AGH - University of Krakow
College of Ecology and Environment
Institute of Physics and Technology
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