Rapid dual-channel electrons transfer via synergistic effect of LSPR effect and build-in electric field in Z-scheme W18O49/BiOBr heterojunction for organic pollutants degradation

The development of Z-scheme heterojunction is a frequently-used way to boost photogenerated electrons separation and migration for obtaining excellent photocatalytic performance. Hence W18O49/BiOBr Z-scheme heterojunction photocatalyst was macroscopically synthesized via high-production mechanical ball milling method. Attributed to the synergistic effect of Z-scheme heterojunction and LSPR effect, W18O49/BiOBr composites possessed remarkably strengthened visible light absorption and rapid photogenerated electrons migration performance. In comparison with pure BiOBr, 2 wt% W18O49/BiOBr composites possessed highly photocatalytic degradation performance for methyl orange (MO), tetracycline hydrochloride (TC) and good stability. Consequently, this work extends the application of ball milling method in photocatalyst preparation and contaminant treatment field.

Automated summary

This study synthesized W18O49/BiOBr Z-scheme heterojunction photocatalyst using a mechanical ball milling method. The synthesized catalyst exhibited enhanced visible light absorption and rapid photogenerated electrons migration, leading to highly efficient degradation of methyl orange and tetracycline hydrochloride.