2?8H2O為鋯源，通過水熱法合成了納米二氧化鋯（ZrO2）粉體。結(jié)果表明，ZrO2顆粒為橢球形，粒徑主要在40~100 nm范圍內(nèi)，粒徑分布窄。通過測量ZrO2的Zeta電位和粒徑，研究了不同pH條件下水懸浮液中此ZrO2粉體的表面電荷和分散性能。發(fā)現(xiàn)ZrO2粉體的等電點(diǎn)（IEP）為pH=9.0，在遠(yuǎn)離IEP處ZrO2顆粒分散性好，而在IEP處則團(tuán)聚嚴(yán)重。;Nanometer-sized zirconia (ZrO2) powder was synthesized from ZrOCl2·8H2O through a hydrothermal method. The aqueous suspension stability of ZrO2 powder was studied by zeta potential measurement and particle size analysis. Results show that ZrO2 nanoparticles are ellipsoidal with uniform particle size, and the particle size is mainly in the range of 40–100 nm. The isoelectric point (IEP) occurs at pH=9.0. ZrO2 particles are well dispersed far from IEP and severely agglomerated near IEP."/>
2粉體;Zeta電位;水懸浮液;水熱法;ZrO2 powder;zeta potential;aqueous suspension;hydrothermal method"/>