▎ 摘 要
A green palladium-based catalyst supported on Artemisia abrotanum extract-modified graphene oxide (Pd NPs/RGO-A. abrotanum) hybrid material has been used as a recoverable and heterogeneous nanocatalyst for the catalytic reduction of various dyes, including methylene blue, methyl orange and rhodamine B, in the presence of NaBH4 as reducing agent in aqueous medium at room temperature. With the help of UV-visible spectroscopy, the catalytic reactions were investigated. According to the results, these reactions followed the pseudo-first-order rate equation.