کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8850771 | 1618763 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application and stability of cathodes with manganese dioxide nanoflowers supported on Vulcan by Fenton systems for the degradation of RB5 azo dye
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Application and stability of cathodes with manganese dioxide nanoflowers supported on Vulcan by Fenton systems for the degradation of RB5 azo dye Application and stability of cathodes with manganese dioxide nanoflowers supported on Vulcan by Fenton systems for the degradation of RB5 azo dye](/preview/png/8850771.png)
چکیده انگلیسی
This work describes the electrochemical degradation of Reactive Black 5 (RB5) by two methods: electrochemical and photo-assisted electrochemical degradation with and without a Fenton reagent. Two anodes were used, Pt and boron-doped diamond (BDD, 2500â¯ppm), and the cathode was 3% MnO2 nanoflowers (NFMnO2) on a carbon gas diffusion electrode (GDE). An electrochemical cell without a divider with a GDE with 3% w/w NFMnO2/C supported on carbon Vulcan XC72 was used. The decolorization efficiency was monitored by UV-vis spectroscopy, and the degradation was monitored by Total Organic Carbon (TOC) analysis. For dissolution monitoring, aliquots (1â¯mL) were collected during the degradation. After 6â¯h of H2O2 electrogeneration, the manganese concentration in the RB5 solution was only 23.1â¯Â±â¯1.2â¯Î¼gâ¯Lâ1. It was estimated that approximately 60â¯Î¼gâ¯Lâ1 (<0.2%) of manganese migrated from the GDE to the solution after 12â¯h of electrolysis, which indicated the good stability of the GDE. The photoelectro-Fenton-BDD (PEF-BDD) processes showed both the best color removal percentage (â¼93%) and 91% of mineralization. The 3% NFMnO2/C GDE is promising for RB5 degradation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 208, October 2018, Pages 131-138
Journal: Chemosphere - Volume 208, October 2018, Pages 131-138
نویسندگان
L.R. Aveiro, A.G.M. Da Silva, E.G. Candido, V.S. Antonin, L.S. Parreira, R. Papai, I. Gaubeur, Fernando L. Silva, M.R.V. Lanza, P.H.C. Camargo, M.C. Santos,