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首次报道采用溶液电火花制备Ag—TiO2纳米级复相超细粉，XRD和TEM分析表明，所得产物可是金红石相也可是锐钛矿相，粒径分布均匀，一般在5～20nm内，超细粉经超声重新分散后所得纳米粒子的TEM像指出，许多粒子是由金属Ag粒子和TiO2粒子互相粘连构成葫芦状混合复相纳米结构，显示有比涂层修饰粒子略有减弱的增强激光拉曼散射（SERS）效应和相应的光学性质。讨论了含有Ag涂层的复合TiO2粒子与纯TiO2粒子互相粘连构成混合复相纳米粒子的可能性。
The first report prepared by solution EDM Ag-TiO2 nanocomposite ultrafine powder, XRD and TEM analysis showed that the resulting product may be rutile or anatase phase, the particle size distribution, usually in the 5 ~ 20nm, ultrafine The TEM image of the nanoparticles obtained after the redispersion of the powder indicates that many of the particles are formed by the adhesion of the Ag particles and the TiO2 particles to each other to form a gourd-like mixed-phase nanostructure, showing enhanced Raman laser slightly weaker than the coated modified particles Scattering (SERS) effects and corresponding optical properties. It is discussed that the composite TiO2 particles containing Ag coating and the pure TiO2 particles are likely to adhere to each other to form mixed multi-phase nano-particles.