立方体形α-Fe2O3光催化剂的合成及其可见光芬顿降解抗生素

doi:10.19964/j.issn.1006-4990.2022-0579

Abstract

Abstract:

The abuse of antibiotics and disordered discharge of production wastewater cause the pollution of antibiotics in the water.The cubic morphology α-Fe₂O₃ photo-Fenton catalyst was synthesized by solvothermal method，and its microstructure and physical properties were characterized by scanning electron microscopy（SEM），transmission electron microscopy（TEM），and X-ray diffraction（XRD）.The adsorption and photo-Fenton degradation of TC by the new catalysts were investigated using tetracycline hydrochloride（TC） as a model antibiotic pollutant，and the effects of various factors including catalyst concentration，H₂O₂ content，LED light wavelength，and pH on TC degradation removal were investigated.The results showed that the cubic α-Fe₂O₃ with uniform particle size distribution was successfully synthesized and its adsorption on TC could reach equilibrium within 30 min，and the adsorption capacity could reach 7.06 mg/g.When the initial mass concentration of TC was 20 mg/L and the mass concentration of α-Fe₂O₃ catalyst was 0.5 g/L，the removal rate of TC could reach more than 80% by using visible LED light source photo-Fenton degradation for 30 min.

Key words: cubic α-Fe₂O₃, photo-Fenton, degradation, tetracycline hydrochloride

CLC Number:

TQ426

YAN Chaoqun, ZHANG Xianming, WEI Juan, CHENG Zhiliang, XU Qian, ZHANG Xuan. Synthesis of cubic α-Fe₂O₃ catalyst and its photo-Fenton degradation performance of antibiotic under visible light[J]. Inorganic Chemicals Industry, 2023, 55(8): 28-35.

Figures/Tables 10

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催化剂	反应条件	TC处理量/mL	反应时间	降解率/%	速率常数/ min^-1
磁性氧化石墨烯/氧化锌纳米复合材料^［25］	TC质量浓度为50 mg/L，光照强度为1 kW/m²，催化剂质量浓度为1 g/L	50	吸附时间为40 h，光反应时间为100 min	74.0	14.0×10^-3
花球状Ag/Ag₂CO₃/BiVO₄^［26］	TC质量浓度为20 mg/L，催化剂质量浓度为 0.4 g/L，500 W氙灯	50	吸附时间为60 min，光反应时间为150 min	94.9	18.6×10^-3
FeNi₃/SiO₂/ZnO^［27］	TC质量浓度为10 mg/L，催化剂质量浓度为 0.02 g/L，500 W氙灯，pH为9	50	吸附时间为30 min，光反应时间为200 min	100.0	25.0×10^-3
ZnIn₂S₄^［28］	TC质量浓度为10 mg/L，催化剂质量浓度为 0.3 g/L，光照强度为380 kW/m²	100	吸附时间为30 min，光反应时间为180 min	98.0	—
MIL-53（Fe）/BiOI^［29］	TC质量浓度为25 mg/L，催化剂质量浓度为 0.5 g/L，300 W氙灯	50	吸附时间为30 min，光反应时间为14 min	86.2	90.6×10^-3
Fe-MOF^［30］	TC质量浓度为50 mg/L，催化剂质量浓度为 0.1g/L，300 W氙灯，pH为4.1	200	吸附时间为30 min，光反应时间为20 min	82.5	70.0×10^-3
立方体形α-Fe₂O₃（本研究）	TC质量浓度为20 mg/L，催化剂质量浓度为 0.5 g/L，405 nm-45 W LED，pH为5	100	吸附时间为30 min，光反应时间为30 min	80.0	67.5×10^-3

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Synthesis of cubic α-Fe₂O₃ catalyst and its photo-Fenton degradation performance of antibiotic under visible light

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Synthesis of cubic α-Fe2O3 catalyst and its photo-Fenton degradation performance of antibiotic under visible light