کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1785453 1023381 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
HRTEM study of the variation of TNTs morphology synthesized via hydrothermal method at different reaction times
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
HRTEM study of the variation of TNTs morphology synthesized via hydrothermal method at different reaction times
چکیده انگلیسی


• Titanate nanotubes were synthesized via hydrothermal method.
• The influence of reaction time on the evolution of nanotubes morphology was investigated.
• The HRTEM results are compared to those obtained by XRD.
• The outer diameter as well as the number of layers increases with the increase of the reaction time.

Titanate nanotubes were synthesized via hydrothermal treatment of rutile TiO2. The reaction conditions were: particles sizes of TiO2 having diameter between 0.05 and 0.5 μm, 10 M NaOH solution and a temperature of 150 °C. The effect of reaction time on the morphology and the crystalline structure were investigated by X-ray diffraction (XRD), Raman spectroscopy and High Resolution Transmission Electron Microscopy (HRTEM). Results showed that the reaction products are composed of nanotubes having 3, 4 and 5 layers. All the three forms coexist together in each sample with different fractions. The number of layers of the major form increases from 3 to 5 layers when reaction time increases from 12 to 120 h. At the same time, internal and external diameters vary from 3 nm to 5 nm and from 7 nm to 11 nm respectively. Deformation of nanotubes as well as nanotubes assembling and the formation of nanoribbons appear clearly for high reaction times (120 h).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 16, Issue 10, October 2016, Pages 1308–1314
نویسندگان
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