کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
27202 44009 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Silver ion release from electrodes of nanotubes of TiO2 impregnated with Ag nanoparticles applied in photoelectrocatalytic disinfection
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Silver ion release from electrodes of nanotubes of TiO2 impregnated with Ag nanoparticles applied in photoelectrocatalytic disinfection
چکیده انگلیسی


• TiO2 nanotubes electrode impregnated with Ag nanoparticles was made.
• The Ag+ lixiviation was monitored by anodic stripping voltammetry.
• Antimicrobial behavior of Ti/TiO2–Ag was evaluated using UV and visible irradiation.

Self-organized TiO2 nanotubes arrays electrodes were impregnated with 0–16% of Ag nanoparticles (Ti/TiO2–Ag) using different procedures. The electrodes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and photocurrent vs potential curves. The best results were obtained by electrode prepared by photochemical reduction, after immersion in a solution AgNO3 0.05 M (pH 8). The monitoring of Ag+ lixiviation by anodic stripping voltammetry at glassy carbon electrode indicated that a maximum of 2.5 × 10−6 M is released in the first 40 min of treatment, but it is neglected when used subsequently. Moreover, the antimicrobial behavior of electrodes Ti/TiO2–Ag applied in photoelectrocatalysis presented 100% disinfection in 3 min by using UV irradiation and 99.6% in 30 min with visible irradiation. In addition, the analysis of silver in solution along the reaction shows a negligible lixiviation and a high stability of the surface silver deposits.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 278, 15 March 2014, Pages 1–8
نویسندگان
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