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Polyporphyrin/MXene-based Self-supporting Composite Films and Photocatalytic Degradation of Pollutants |
HUO Zhaohui( ), WU Haojie, HE Yongqi, ZHENG Mingxiu, ZHAN Manzi, ZHANG Qitong, LIAO Xiaolin |
School of Chemistry and Materials Science, GuangDong University of Education, Guangzhou 510303, China |
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Cite this article:
HUO Zhaohui, WU Haojie, HE Yongqi, ZHENG Mingxiu, ZHAN Manzi, ZHANG Qitong, LIAO Xiaolin. Polyporphyrin/MXene-based Self-supporting Composite Films and Photocatalytic Degradation of Pollutants. Chinese Journal of Materials Research, 2024, 38(12): 950-960.
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Abstract Herein, photocatalyst composite films of polyporphyrin/MXene were prepared via anodic oxidation method with octaethyl porphyrin zinc and 4,4-bipyridine as monomers, and multi-layered Ti3C2 as MXene self-supporting film, with the aim to prepare a novel material with high-photocatalysis efficiency for degradation of dyestuffs wastewaters. The prepared catalyst was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, photoelectrochemical testing etc. The photocatalytic degradation effect of the synthesized self-supporting composite film photocatalyst on methylene blue was assessed through photocatalytic degradation testing. The results indicate that loading polyporphyrin onto MXene thin films can promote the separation of photo generated electron pairs, improve the efficiency of polyporphyrin photocatalysis, and achieve reusable recycling of materials. The increase in interlayer spacing of MXene was achieved by loading polyporphyrin onto the MXene through anodic oxidation, effectively solving the problem related with restacking and increasing the porosity of MXene. When the area of the polyporphyrin/MXene based composite film is 1 cm2 and the initial concentration of methylene blue is 10 mg/L, the degradation rate of methylene blue by the composite material reaches 98% after 80 minutes of illumination. The capture experiment shows that the main free radical playing a role in the photocatalytic degradation of methylene blue is h+.
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Received: 22 January 2024
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Fund: Guangdong Basic and Applied Basic Research Fund (Guangdong Guangzhou Joint Fund) Project(2023A1515111132);Guangzhou Basic and Applied Basic Project(202102020424);College Student Innovation and Entrepreneurship Training Program Project(202414278081);Guangdong Province Key Field Special Project for Ordinary Universities(2023ZDZX4043) |
Corresponding Authors:
HUO Zhaohui, Tel: 13422197623, E-mail: huozhaohui@gdei.edu.cn
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