TiO₂나노분말과 수산화알칼리와의 반응으로부터 티탄산 나노튜브의 형성과 나노구조의 전개
Titanate Nanotube formation and Nanostructure Development from the Reaction of TiO₂ nanopowder and Alkalihydroxide
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TiO₂nanotubes for photocatalytic application have been synthesized by hydrothermal method. TiO₂nanotubes are formed by washing process after reaction in alkalic solution. Nanotubes with diferent morphologyhave been fabricated by changing NaOH concentration, temperature and time. TiO₂nanoparticles were treatedoC for 20 h, after which they were washed with HCl aque-ous solution and deionized water. Nanotube with the most perfect morphology was formed from 0.1 N HCl wash-ing treatment. TiO2 nanotube was also obtained when the precursor was washed with other washing solutions suchas NH₄OH, NaCl, K₂SO₄, and Na₂SO₃. Therefore, it was suggested that Na+ ion combined inside the precursorcompound slowly comes out from the structure, leaving nanosheet morphology of TiO₂compounds, which in turnwashing treatment solution might be considered such as amine class compounds.
Abstract
TiO₂nanotubes for photocatalytic application have been synthesized by hydrothermal method. TiO₂nanotubes are formed by washing process after reaction in alkalic solution. Nanotubes with diferent morphologyhave been fabricated by changing NaOH concentration, temperature and time. TiO₂nanoparticles were treatedoC for 20 h, after which they were washed with HCl aque-ous solution and deionized water. Nanotube with the most perfect morphology was formed from 0.1 N HCl wash-ing treatment. TiO2 nanotube was also obtained when the precursor was washed with other washing solutions suchas NH₄OH, NaCl, K₂SO₄, and Na₂SO₃. Therefore, it was suggested that Na+ ion combined inside the precursorcompound slowly comes out from the structure, leaving nanosheet morphology of TiO₂compounds, which in turnwashing treatment solution might be considered such as amine class compounds.
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