Comparative Study of Catalytic Activity of Recyclable Au/FeO Microparticles for Reduction Of 2,4-Dinitrophenol and Anionic, Cationic Azo Dyes.

We synthesized Au/FeO microparticles. Initially, citrate-capped FeO micro-sized particles were synthesized by the co-precipitation method with an excess amount of trisodium citrate. Gold ions were reduced on the surface of citrate-capped FeO and grew as gold sub-microparticles with an average diameter of 210 nm on the surface.