초록 |
A facile method was developed for producing highly porous polystyrene microspheres with interconnected open pore structures and uniform size distributions by simply dispersing PS seed particles in an oil-in-water-emulsion system. The proposed synthetic method is simple, fast, and easy to process, and do not require special additives. Catalytic microreactors were fabricated by synthesizing mono- and bimetallic nanocrystals on the surface of the porous microspheres via in situ chemical reduction. When the microreactors were used as a heterogenous catalyst for the 4-nitrophenol reduction reaction by sodium borohydride, they exhibited extremely high catalytic activity and excellent recyclability. |