Synthesis and morphology of triangular pyramid-shaped puerarin microparticle with nanostructure

A type of triangular pyramid-shaped microparticles of puerarin was synthesized by using oil-in-oil microemulsion approach which is simple and economical under the action of copper substrate. The pyramid-shaped microparticles would be made up of deposit of nanospheres or nanorods and have two significant characters. One is its complex surface morphology like coral reef. The other is a lot of nanopores in existence in the microparticle body. Two possible formation routes were speculated.