FeMn-MOF/CN异质结光芬顿催化剂制备及性能研究

doi:10.19964/j.issn.1006-4990.2022-0146

Abstract

Abstract:

The bimetal Fe，Mn-organic framework/carbon nitride heterojunction photo-Fenton catalysts（FeMn-MOF/CN） were prepared by a facile in-situ loading strategy，and the composition，structure and optoelectronic properties of the catalysts were characterized by X-ray diffraction（XRD），infrared spectroscopy（FT-IR），scanning electron microscopy（SEM），photoluminescence（PL） spectroscopy and etc.The photo-Fenton performance of the catalysts was evaluated by using the degradation of high concentration levofloxacin（LEV，100 mg/L） as model reaction，and the possible photo-Fenton reaction mechanism was proposed.Due to the synergistic effect between photocatalysis and Fenton reactions，5%FeMn-MOF/CN（mass ratio of FeMn-MoF/CN was 5%） exhi-bited excellent photo-Fenton performance，with the LEV removal efficiency of 98.8% within 40 min.An intimate heterojunction interface was formed between FeMn-MOF and CN via the in-situ loading strategy，which not only significantly improved the separation and transfer efficiency of photogenerated carriers，but also promoted the cycling of the Fe（Ⅲ）/Fe（Ⅱ）and Mn（Ⅲ）/Mn（Ⅱ）.This study provided a new idea for the design and preparation of efficient photo-Fenton catalytic materials.

Key words: photo-Fenton, carbon nitride, bimetallic MOF, heterojunction, synergistic effect

CLC Number:

O643.36

LI Xiangyang,LIU Ziwei,LI Keyan,GUO Xinwen. Study on preparation and performance of FeMn-MOF/CN heterojunction photo-Fenton catalyst[J]. Inorganic Chemicals Industry, 2022, 54(12): 126-132.

Figures/Tables 6

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Study on preparation and performance of FeMn-MOF/CN heterojunction photo-Fenton catalyst

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