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<p>The formation of long-prismatic titanium dioxide nanocrystals was detected upon carrying out a five-steps process consisting of the reaction of tetrabutoxytitanium with hydrogen peroxide, mixing the reaction product with sodium chloride, drying, calcination at 700 °C, and washing the material from salt. The crystals were formed in microcavities of the TiO<sub>2</sub> crystallite aggregate. The crosswise size of crystals was 40–90 nm, while their length reached 300–700 nm. According to the X-ray phase analysis, the polycrystalline sample consisted of two phases: anatase (92 wt.%) and rutile (8 wt.%). The long-prismatic crystals were formed only upon using NaCl in the synthesis. If this salt was not used, the resulting sample contained 32 wt.% anatase and 68 wt.% rutile.</p>

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Formation of long-prismatic TiO2 nanocrystals upon the calcination of a mixture of titanium peroxo complex and sodium chloride

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • A. B. Shishmakov,
  • Y. V. Mikushina

摘要

The formation of long-prismatic titanium dioxide nanocrystals was detected upon carrying out a five-steps process consisting of the reaction of tetrabutoxytitanium with hydrogen peroxide, mixing the reaction product with sodium chloride, drying, calcination at 700 °C, and washing the material from salt. The crystals were formed in microcavities of the TiO2 crystallite aggregate. The crosswise size of crystals was 40–90 nm, while their length reached 300–700 nm. According to the X-ray phase analysis, the polycrystalline sample consisted of two phases: anatase (92 wt.%) and rutile (8 wt.%). The long-prismatic crystals were formed only upon using NaCl in the synthesis. If this salt was not used, the resulting sample contained 32 wt.% anatase and 68 wt.% rutile.