Nanoparticles, dispersions of nanoparticles, and suspensions of nanoparticles, the nanoparticles formed of oxides, carbonates, phosphates, and nanoparticles formed of organic polymers, namely nanoparticles of ceria and ceria-containing mixed oxides, zirconia and mixed oxides, barium strontium titanate, barium titanate, strontium titanate, magnesium aluminum oxides, copper oxide and mixed oxides, mixtures of copper oxide and yttria stabilized zirconia, nickel oxide and mixed oxides, mixtures o...