化学
盐酸四环素
降级(电信)
浸出(土壤学)
激进的
催化作用
光催化
动力学
紫外线
电子顺磁共振
扫描电子显微镜
反应机理
吸附
光化学
化学工程
核化学
材料科学
四环素
有机化学
电信
生物化学
环境科学
物理
光电子学
核磁共振
量子力学
复合材料
计算机科学
土壤科学
土壤水分
抗生素
工程类
作者
Tingting Zhang,Xing Liu,Yanqiu Jiang,Xiaowei Zheng,Jian Zhang,Yudong Li,De‐Feng Li,Kaifeng Lin
标识
DOI:10.1016/j.apsusc.2023.156715
摘要
Photo-Fenton reaction has received increasing attention in removing antibiotics in water. Herein, Fe2O3-on-ZrO2 polypods were designed and synthesized via metal organic frameworks (MOFs) derivation strategy combined with reflux heating and baking. The experimental results showed that under Ultraviolet–visible (UV–vis) light irradiation, more than 95 % tetracycline hydrochloride (TC-HCl) was degraded by Fe2O3-on-ZrO2 with Fe/Zr mole ratio of 1.3 in 25 min within full pH range. Mainly due to the following points, there were abundant Fe2O3-on-ZrO2 heterojunctions, which conduced to transfer photo-induced electrons (e−) from ZrO2 to Fe2O3, thus accelerating the iron cycle. Besides, OH– adsorbed was oxidized to hydroxyl radicals (·OH) by holes (h+) in the valence band (VB) of ZrO2, and ZrO2 also enhanced the stability of the catalyst and reduced the leaching of iron ions. Finally, the reasonable degradation pathway and degradation mechanism were speculated by high performance liquid chromatography-mass spectrometry (HPLC-MS), electron spin resonance technology (ESR), scanning Kelvin probe (SKP), the conduction band (CB) and VB positions of Fe2O3-on-ZrO2, etc. This work exhibited a new structure and degradation mechanism, which would further encourage researchers to study the rational regulation of materials with special morphology and structure.
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