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Inicio  /  Coatings  /  Vol: 13 Par: 6 (2023)  /  Artículo
ARTÍCULO
TITULO

Intentionally Incorporated Fe Cations in Silverton Polyoxometalates Forming Fenton-like Photocatalysts for Enhanced Degradation

Hongmei Dong    
Di Gao    
Baoyi Li    
Hongdao Li    
Lifeng Ding and Yulan Niu    

Resumen

Polyoxometalates (POMs) have shown great potential for applications in photocatalysis due to their unique structural features, tunable band gap, and environmental benignity. Herein, a Fe ion-incorporated Co4W6O21(OH)2·4H2O sphere network POM was successfully synthesized via a simple hydrothermal process. A DFT calculation proved that the Fe ion partially replaced cobalt atoms, forming FexCo4-xWOH, which played a crucial role in modulating the electron state and the band structure. The as-prepared FexCo4-xWOH exhibited excellent Fenton-like photocatalytic activity; the degradation rate of RhB improved 3.69 times compared with the sample without doping. The favorable performance of FexCo4-xWOH is a result of the synergistic effects of the Fenton reaction and the activation of H2O2 under visible irradiation, which can generate a mass of ?O2- and ?OH species in the unique sphere network structure. This study supplied a new idea for designing highly-active Fenton-like POM photocatalysts for environmental remediation.

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