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Magnetic field effect on the photocatalytic degradation of methyl orange by commercial TiO₂ powder.

ABSTRACT: In this work, by taking commercial P25 hydrophilic titanium dioxide (TiO₂) as a photocatalyst, the magnetic field effect (MFE) on the photodegradation rate of methyl orange is studied. It is found that a relatively lower magnetic field B = 0.28 T can efficiently enhance the photodegradation efficiency of commercial TiO₂ by 24%. However, the photodegradation efficiency of commercial TiO₂ will be suppressed slightly by 7% under a magnetic field of 0.5 T. Moreover, such MFE on the photocatalyst is dependent on the settling state of the reaction solution. Additional experiments on the degradation of other pollutants (methylene blue) and with other photocatalysts (g-C₃N₄) indicate that the MFE is a ubiquitous phenomenon in the photocatalytic degradation process. These observations suggest that the magnetic field can be taken as an efficient strategy to regulate the catalytic process of commercial catalysts and improve the catalytic efficiency.

SUBMITTER: Bian Y

PROVIDER: S-EPMC8694829 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Magnetic field effect on the photocatalytic degradation of methyl orange by commercial TiO2 powder.

Bian Yuecheng Y Zheng Ganhong G Ding Wei W Hu Lin L Sheng Zhigao Z

RSC advances 20210204 11

In this work, by taking commercial P25 hydrophilic titanium dioxide (TiO2) as a photocatalyst, the magnetic field effect (MFE) on the photodegradation rate of methyl orange is studied. It is found that a relatively lower magnetic field B = 0.28 T can efficiently enhance the photodegradation efficiency of commercial TiO2 by 24%. However, the photodegradation efficiency of commercial TiO2 will be suppressed slightly by 7% under a magnetic field of 0.5 T. Mor ...[more]

PMID: 35423158

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