کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7835299 1503532 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of heat treatment on surface hydrophilicity-retaining ability of titanium dioxide nanotubes
ترجمه فارسی عنوان
اثر عملیات حرارتی بر توانایی نگهداری هیدرولیکی سطحی نانولوله های دیاکسید تیتانیوم
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
The aim of this study is to investigate the effect of different annealing temperature and atmosphere on the surface wettability retaining properties of titania nanotubes (TNs) fabricated by anodization. The TNs morphology, crystal phase composition and surface elemental composition and water contact angle (WCA) were investigated by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and contact angle instrument, respectively. After the samples annealed at 200 °C, 450 °C, 850 °C have been stored in air for 28 days, the WCAs increase to 31.7°, 21.1° and 110.5°, respectively. The results indicate that crystal phase composition of TNs plays an important role in surface wettability. Compared with the WCA (21.1°) of the samples annealed in air after 28 days, the WCA of samples annealed in oxygen-deficient atmosphere is lower, suggesting the contribution of oxygen vacancy in the enhanced hydrophilicity-retaining ability. Our study demonstrates that the surface hydrophilicity-retaining ability of TNs is related to the ordered nanotubular structure, crystal structure, the amount of surface hydroxyl group and oxygen vacancy defects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 440, 15 May 2018, Pages 440-447
نویسندگان
, , , , , , , ,