Fabrication of titanium doped hollow glass microsphere

A preparation method of the titanium doped hollow glass microsphere (Ti-HGM) was investigated, which uses tetrabutyl titanate (Ti(OC₄H₉)₄) as dopant and follows the sol-gel route of titanium doped glass sol - titanium doped glass gel - dried titanium doped glass gel particle - titanium doped hollow glass microsphere, in order to uniformly dope the hollow glass microsphere for inertial confinement fusion targets. The results show that the doping effect decreased the wall-thickness uniformity and concentricity of Ti-HGMs, and had no influence on diameter and wall thickness. The Ti-HGMs of Ti, Si atomic ratio of 2.23% were almost uniformly doped, and the gas-storage half-life of nearly 70% Ti-HGMs was more than one month at room temperature. (authors)