纳米复合材料
催化作用
光催化
可见光谱
吸附
盐酸四环素
热液循环
矿化(土壤科学)
激进的
降级(电信)
化学工程
异质结
光化学
化学
比表面积
材料科学
四环素
纳米技术
有机化学
工程类
光电子学
生物化学
抗生素
氮气
电信
计算机科学
作者
Xinyi Huang,Hui Zhou,Xiaojun Yue,Songlin Ran,Jianhua Zhu
标识
DOI:10.1021/acsomega.1c00204
摘要
Magnetic Fe3O4/α-FeOOH heterojunction nanocomposites (denoted as Fe-NCs) have been synthesized by a fast one-pot hydrothermal method. The obtained Fe-NCs contain rich micropores with a high surface area of 135.15 m2/g. The different phases in the composites can efficiently enhance the visible-light absorption, improving the separation and transfer of photogenerated electron–hole pairs during the photocatalytic reaction. Thus, they show excellent degradation and mineralization of tetracycline (TC) over a wide pH range (5–9) in the visible photo-Fenton reaction. Especially, the catalyst exhibits the highest adsorption capacity toward TC at a neutral pH, which facilitates the surface reactions of TC with active species. Experiments evidence that the high production of photogenerated holes and superoxide radicals (O2•–) in Fe-NCs are favorable to the high catalytic efficiency. Combined with liquid chromatography–mass spectrometry, the possible pathway toward TC degradation was proposed.
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