کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6968467 | 1453010 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Degradation of organic dyes by a new heterogeneous Fenton reagent - Fe2GeS4 nanoparticle
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The heterogeneous Fenton system has become the hotspot in the decontamination field due to its effective degradation performance with a wide pH range. Based on the unstable chemical properties of pyrite, in this article, Fe2GeS4 nanoparticles with better thermodynamic stability were prepared by vacuum sintering and high energy ball milling and its potential as Fenton reagent was investigated for the first time. Three determinants of the heterogeneous Fenton system including the iron source, hydrogen peroxide, pH and the degradation mechanism were investigated. The catalyst dosage of 0.3â¯g/L, initial H2O2 concentration in the Fenton system of 50â¯mâ¯mol/L and pH of 7 were chosen as the best operational conditions. An almost complete degradation was achieved within 5â¯min for methylene blue and rhodamine b while 10â¯min for methyl orange. The total organic carbon removal efficiencies of Fe2GeS4 heterogeneous Fenton system for methylene blue, methyl orange and rhodamine b in 10â¯min were 56.3%, 66.2% and 74.2%, respectively. It's found that the degradation ability could be attributed to a heterogeneous catalysis occurring at the Fe2GeS4 surface together with a homogeneous catalysis in the aqueous phase by the dissolved iron ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 353, 5 July 2018, Pages 182-189
Journal: Journal of Hazardous Materials - Volume 353, 5 July 2018, Pages 182-189
نویسندگان
Xiaoguo Shi, Ang Tian, Junhua You, He Yang, Yuzheng Wang, Xiangxin Xue,