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The hierarchical porous Fe2O3 particles as a novel ultraviolet light assisted heterogeneous Fenton catalysts were synthesized by bio-template synthesis method using iron nitrate as precursor at high temperature of around 550 ℃.The hierarchical porous structured Fe2O3 was endowed with a large surface area and abundant pore volume,leading to the exposure of more active sites and rapid mass transfer.The synergistic effect of UV irradiation and hierarchical porous Fe2O3 improved the photo-degradation efficiency of Tetracycline(TC).The degradation efficiency of Fe2O3 catalyzing UV-Fenton system reached 97.4% after 60 min reaction,which was more substantial than Fe2O3 catalyzing Fenton system(7.6%) and UV/H2O2 system(59.2%).Moreover,the hierarchical porous Fe2O3 catalyzing UV-Fenton system exhibited an extremely wide pH range(from 3.0 to 9.0,from mildly acidic to slightly alkaline) for efficient degradation of TC.Simultaneously,the extraordinary higher degradation efficiency was based on 10 mmol/L H2O2 concentration,which was low requirement for H2O2.Further,the hierarchical porous Fe2O3 can be used for five consecutive cycles with over 95% of the original degradation efficiency.Ultraviolet light assisted heterogeneous Fenton reaction in the hierarchical porous Fe2O3 improved the ·OH and O2-production and Fe(Ⅲ)/Fe(Ⅱ) redox cycle,which consequently achieved an excellent degradation rate.
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来源期刊 高等学校化学研究(英文版) 学科
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年,卷(期) 2019,(2) 所属期刊栏目
研究方向 页码范围 304-310
页数 7页 分类号
字数 语种 英文
DOI 10.1007/s40242-019-8238-y
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高等学校化学研究(英文版)
双月刊
1005-9040
22-1183/O6
16开
长春市解放大路117号吉林大学北区图书馆414室
12-170
1984
eng
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