科研之友
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摘要
To develop efficient and stable visible-light-driven (VLD) photocatalysts for pollutant degradation, we synthesized novel hetero-junction photocatalysts comprised of AgI nanoparticle-decorated Ag(2)W0(4) nanorods via a facile method. Various characterization techniques, including XRD, SEM, TEM, EDX, and UV-vis DRS were used to investigate the morphology and optical properties of the as-prepared AgI/Ag2WO4 catalyst. With AgI acting as the cocatalyst, the resulting AgI/Ag2WO4 heterostructure shows excellent performance in degrading toxic, stable pollutants such as rhodamine B (RhB), methyl orange (MO) and para-chlorophenol (4-CP). The high performance is attributed to the enhanced visible-light absorption properties and the promoted separation efficiency of charge carriers through the formation of the heterojunction between AgI and Ag2WO4 Additionally, AgI/Ag2WO4 exhibits durable stability The active species trapping expenment reveals that active species (0(2)degrees(-) and h(+)) dominantly contnbute to RhB degradation The AgI/Ag2WO4 heterojunction photocatalyst charactenzed m this work holds great potential for remedying environmental issues due to its simple preparation method and excellent photocatalytic performance.
