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Porous spherical Co-doped SiO 2 /TiO 2 hybrid particles were prepared using two-step impregnation (CS/T(i)) or impregnation and subsequent spraying of precursor solutions (CS/T(s)) to organic spherical monolith particles. The hybrid particles, after firing at 550°C in air, possessed intermediate specific surface area and pore structure characteristics that were between those of Co-doped...
Porous spherical CeO 2 particles were prepared by impregnation of a cerium precursor solution into organic monolith sphere particles, with subsequent firing at 500°C in air. The single-phase CeO 2 powder had specific surface area of greater than 140m 2 /g. Photodeposition with UV illumination loaded Au onto the CeO 2 particle surface, which changed from yellowish to...
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