کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5480249 | 1522105 | 2017 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A comparative study of sodium/hydrogen titanate nanotubes/nanoribbons on destruction of recalcitrant compounds and sedimentation
ترجمه فارسی عنوان
بررسی تطبیقی نانولوله های تیتانات سدیم / هیدروژن بر روی تخریب ترکیبات بازدارنده و رسوب گذاری
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کلمات کلیدی
تیتانات، نانوتوب نانوریبون، جذب، فعالیت فوتوکاتالیستی، رسوبگذاری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The performances of sodium titanate nanotubes (Na-TT), hydrogen titanate nanotubes (H-TT), sodium titanate nanoribbons (Na-TR) and hydrogen titanate nanoribbons (H-TR) on adsorption, photodegradation of methylene blue (MB) and sedimentability were investigated. The intrinsic property of Na-TT with high hydroxyl groups (anionic) provided a strong electrostatic interaction between the MB (cationic) under dark condition. The equilibrium and kinetic adsorption were fitted with Langmuir isotherm models and the pseudo-second-order model, respectively. That is, Na-TT showed the best maximum adsorption capacity of 178.6 mg/g and adsorption kinetics of 0.119 g/mg·min. When the light is turned on, H-TT showed advance its photocatalytic reaction rate of 1.16 Ã 10â2 minâ1 compared with Na-TT (the reaction rate of 1.02 Ã 10â2 minâ1). This attributed the saturated MB adsorption on Na-TT obstructed capacity to absorb photons, and thus the reaction gradually occurred. For the separation of photocatalysts from the suspension by adding alum as coagulant, Na-TT afforded the best sedimentability of which remaining Na-TT in water was approximately 5%. This study demonstrates that adsorption, degradation and sedimentability were governed by the surface area and crystal structure, which revealed increasing the performance in the order TiO2 < H-TR < Na-TR < H-TT < Na-TT.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 148, 1 April 2017, Pages 905-914
Journal: Journal of Cleaner Production - Volume 148, 1 April 2017, Pages 905-914
نویسندگان
Kunlanan Kiatkittipong, Suttichai Assabumrungrat,