Journal Published Online: 04 April 2022
Volume 11, Issue 1

Photocatalytic Degradation of Printing and Dyeing Wastewater by F-N/TiO /AC and F-N/TiO /MAC Composite Photocatalysts

CODEN: MPCACD

Abstract

A fluorine/nitrogen-co-doped titania/activated carbon (F-N/TiO2/AC) composite has been prepared through an immersion–hydrothermal method. Magnetic activated carbon (MAC) has been prepared through a chemical coprecipitation method and used to assemble the analogous composite F-N/TiO2/MAC. The characterization results show that F-N/TiO2/MAC contains a certain amount of magnetic ferrous oxide material, and the presence of magnetic ferrous oxide material will not affect the crystalline shape of TiO2. F-N/TiO2/MAC is a weak magnetic material, and it could be conveniently recycled by applying a strong magnetic field. Methyl orange solution has been used as a target to assess the photocatalytic degradation and recycling performances of the composites. Results show that the adsorption of methyl orange on the photocatalysts follows a pseudo second-order kinetic model, and the adsorption rate of F-N/TiO2/AC is higher. In the photocatalytic degradation of methyl orange pseudo first-order reaction kinetics study, the k value of F-N/TiO2/MAC was 0.00497 min−1, which was higher than that of F-N/TiO2/AC. Even though the adsorption performance of F-N/TiO2/MAC is not as good as that of F-N/TiO2/AC, its photocatalytic degradation performance is superior. Overall, the two composite materials show roughly the same removal efficiencies for methyl orange, reaching 100 % for F-N/TiO2/AC and 98.9 % for F-N/TiO2/MAC. In terms of recycling performance, the magnetic property of F-N/TiO2/MAC makes it easier to recover from mixed solutions.

Author Information

Lu, Yu
Faculty of Maritime and Transportation, Ningbo University, Ningbo, China
Chen, Zhen
Faculty of Maritime and Transportation, Ningbo University, Ningbo, China
Zhu, Yingying
Faculty of Maritime and Transportation, Ningbo University, Ningbo, China
Xia, Zhenguo
Faculty of Maritime and Transportation, Ningbo University, Ningbo, China
Chen, Geng
Faculty of Maritime and Transportation, Ningbo University, Ningbo, China
Pages: 12
Price: $25.00
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Stock #: MPC20210127
ISSN: 2379-1365
DOI: 10.1520/MPC20210127