Ag microstructures were synthesized with a reaction between silver acetate (CH3COOAg) and hydrogen peroxide (H2O2) without surfactant or capping agent under ambient condition in 2 min. They were characterized with spectroscopy techniques. Ag microstructures showed dendritic pattern on their surface with single crystal XRD pattern. Rate of the reaction plays an important role on structural control. Acetate ion spontaneously binds with Ag surface and organic solvents with the other end. Ag microstructures were also controlled...