期刊
CHEMISTRY OF MATERIALS
卷 17, 期 22, 页码 5562-5566出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm051289s
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Willemite nanoparticles doped with divalent cobalt ions were synthesized by a sol-gel method using propylene oxide as a gelation agent. The resulting nanoparticles show a narrow size distribution with particles in the 30-50 nm range. A highly homogeneous wet gel was achieved by the formation of M-O-Si bonds (M = Zn, Co) during the hydrolysis and condensation of the precursor salts. This high homogeneity allows a substantial reduction of the calcination temperature and time required for the formation of the mixed oxide phase as compared to the solid-state and other sol-gel routes and therefore minimizes the aggregation of the nanoparticles during calcination.
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