Gas dispersion manufacture of nanoparticulates, and nanoparticulate-containing products and processing thereof

A gas dispersion method for making nanoparticulates, the method comprising:

• generating a flowing gas dispersion, as generated the gas dispersion comprising droplets of a precursor medium dispersed in a gas phase, with the precursor medium comprising liquid vehicle and at least two precursors, a first said precursor being a precursor to a first material and a second said precursor being a precursor to a second material;
• in the gas dispersion, forming multi-phase particles dispersed in the gas phase, the multi-phase particles each comprising a dispersion of nanoparticulates and matrix, with the nanoparticulates maintained in a dispersed state by the matrix;
• the forming multi-phase particles comprising removing at least a portion of the liquid vehicle from the droplets to the gas phase and forming the matrix and the dispersion of the nanoparticulates, with the nanoparticulates comprising the first material and the matrix comprising the second material;
• and
• after the forming multi-phase particles, treating the multi-phase particles to modify at least one of the nanoparticulates and the matrix while the nanoparticulates are in the dispersed state.

A method for making multi-phase particles comprising nanoparticulates and matrix, the method comprising:

• generating a flowing gas dispersion, as generated the gas dispersion comprising droplets of a precursor medium dispersed in a gas phase, with the precursor medium comprising liquid vehicle and at least two precursors, a first said precursor being a precursor to a first material and a second said precursor being a precursor to a second material;
• in the gas dispersion, removing at least a portion of the liquid vehicle from the droplets to the gas phase and forming first particles dispersed in the gas phase;
• modifying the first particles to form second particles, the second particles being multi-phase particles each comprising a dispersion of nanoparticulates and matrix, with the nanoparticulates maintained in a dispersed state in the multi-phase particles by the matrix;
• and
• wherein the nanoparticulates comprise the first material and the matrix comprises the second material.