Two-stage heat treatment for producing highly crystalline h-BN nanoparticles from boric acid and urea

Sherzod Abdurakhmonov, Mastura Kh. ARIPOVA, Umar A. YAKHYAEV, Shoxrux B. NAIMOV, Odiljon Abdurakhmonov

Kimyo va kimyo texnologiyasi · 2026-yil

Annotatsiya

The purpose of the study was to investigate the formation of the crystal structure of hexagonal boron nitride (h-BN) nanoparticles obtained by the chemical-thermal method using two-stage heat treatment. Boric acid and urea were used as starting precursors, enabling ammonia-free synthesis conditions. It is shown that the first thermal stage at 600 °C under a nitrogen atmosphere leads to the formation of a predominantly amorphous BN-containing precursor, whereas the second stage at 1000 °C in an N2/H2 atmosphere promotes crystallization of a highly ordered hexagonal h-BN phase. The morphology and particle size distribution were examined by transmission electron microscopy, while the phase composition and crystal structure were analyzed by X-ray diffraction followed by Rietveld refinement. The obtained h-BN nanoparticles exhibit a narrow size distribution of 2–10 nm and a high degree of crystallinity (up to ~99%). Structural modeling and electron density analysis performed using the VESTA software confirm the formation of a layered hexagonal h-BN lattice with an interplanar spacing of approximately 3.3 Å. The results highlight the critical role of the two-stage thermal treatment and gas atmosphere in controlling the crystallinity and structural ordering of h-BN nanoparticles.

Maqola ma’lumotlari
MualliflarSherzod Abdurakhmonov, Mastura Kh. ARIPOVA, Umar A. YAKHYAEV, Shoxrux B. NAIMOV, Odiljon Abdurakhmonov
JurnalKimyo va kimyo texnologiyasi
NashriyotТошкент кимё-технология институти
ISSN1992-9498, 2181-1121
Nashr sanasi2026-03-27
Jild2026
Son1
TilIngliz
Ilmiy sohaKimyo
DOI10.70189/1992-9498.1711
Indeksga qo‘shilgan2026-09-02

DOI: 10.70189/1992-9498.1711 · Maqolaning asl sahifasi

Ilmiy soha

Kimyo

Iqtibos keltirish

APASherzod Abdurakhmonov, Mastura Kh. ARIPOVA, Umar A. YAKHYAEV, Shoxrux B. NAIMOV, & Odiljon Abdurakhmonov (2026). TWO-STAGE HEAT TREATMENT FOR PRODUCING HIGHLY CRYSTALLINE h-BN NANOPARTICLES FROM BORIC ACID AND UREA. Kimyo va kimyo texnologiyasi, 2026(1). https://doi.org/10.70189/1992-9498.1711
GOST (OAK)Sherzod Abdurakhmonov va b. TWO-STAGE HEAT TREATMENT FOR PRODUCING HIGHLY CRYSTALLINE h-BN NANOPARTICLES FROM BORIC ACID AND UREA // Kimyo va kimyo texnologiyasi. – 2026. – T. 2026, № 1. – DOI: 10.70189/1992-9498.1711.
MLASherzod Abdurakhmonov, Mastura Kh. ARIPOVA, Umar A. YAKHYAEV, Shoxrux B. NAIMOV, and Odiljon Abdurakhmonov. “TWO-STAGE HEAT TREATMENT FOR PRODUCING HIGHLY CRYSTALLINE h-BN NANOPARTICLES FROM BORIC ACID AND UREA.” Kimyo va kimyo texnologiyasi, 2026(1), 2026. https://doi.org/10.70189/1992-9498.1711
ChicagoSherzod Abdurakhmonov, Mastura Kh. ARIPOVA, Umar A. YAKHYAEV, Shoxrux B. NAIMOV, and Odiljon Abdurakhmonov. “TWO-STAGE HEAT TREATMENT FOR PRODUCING HIGHLY CRYSTALLINE h-BN NANOPARTICLES FROM BORIC ACID AND UREA.” Kimyo va kimyo texnologiyasi, 2026(1) (2026). https://doi.org/10.70189/1992-9498.1711
HarvardSherzod Abdurakhmonov, Mastura Kh. ARIPOVA, Umar A. YAKHYAEV, Shoxrux B. NAIMOV, and Odiljon Abdurakhmonov (2026) ‘TWO-STAGE HEAT TREATMENT FOR PRODUCING HIGHLY CRYSTALLINE h-BN NANOPARTICLES FROM BORIC ACID AND UREA’, Kimyo va kimyo texnologiyasi, 2026(1). https://doi.org/10.70189/1992-9498.1711
BibTeX
@article{sherzodabdurakhmonov2026,
  title = {TWO-STAGE HEAT TREATMENT FOR PRODUCING HIGHLY CRYSTALLINE h-BN NANOPARTICLES FROM BORIC ACID AND UREA},
  author = {Sherzod Abdurakhmonov and Mastura Kh. ARIPOVA and Umar A. YAKHYAEV and Shoxrux B. NAIMOV and Odiljon Abdurakhmonov},
  journal = {Kimyo va kimyo texnologiyasi},
  year = {2026},
  volume = {2026},
  number = {1},
  doi = {10.70189/1992-9498.1711},
  url = {https://doi.org/10.70189/1992-9498.1711}
}

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