کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7888020 | 1509793 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solvent free mechanochemical synthesis of MnO2 for the efficient degradation of Rhodamine-B
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Solvent free mechanochemical synthesis of MnO2 for the efficient degradation of Rhodamine-B Solvent free mechanochemical synthesis of MnO2 for the efficient degradation of Rhodamine-B](/preview/png/7888020.png)
چکیده انگلیسی
MnO2 nanorods were synthesized by mechanochemical processing with subsequent heat treatment and their photocatalytic activity was studied on the decolourization of aqueous solution of Rhodamine B at different pH levels. A solid state redox reaction 2KMnO4 + MnCl2 â 3MnO2 + 2KCl + O2 was activated during mechanical milling. Excess KCl salt was added in the starting powder mixture to prevent agglomeration of MnO2 nanoparticles. The milling resulted in the production of amorphous MnO2 nanoparticles with a high surface area of 204 m2 gâ1. Crystalline MnO2 nanorods of diameters about 15-20 nm were produced by heating the as-milled powder at 350 °C for 1 h in air. Amorphous MnO2 nanoparticles showed higher degradation rate of Rhodamine B than crystalline MnO2 nanorods under simulated sunlight. The degradation rate was higher under acidic conditions. This work demonstrates the potential for cost effective, green and scalable synthesis of MnO2 nano-catalysts for environmental applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 5, 1 April 2018, Pages 4694-4698
Journal: Ceramics International - Volume 44, Issue 5, 1 April 2018, Pages 4694-4698
نویسندگان
Ankita Gagrani, Jingwei Zhou, Takuya Tsuzuki,