Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou, 213164, PR China.
Chem Commun (Camb). 2012 Jan 30;48(9):1293-5. doi: 10.1039/c1cc15713b. Epub 2011 Dec 19.
Monodisperse single-crystalline α-cristobalite nanospheres have been synthesized by hydrocarbon-pyrolysis-induced carbon deposition on amorphous silica aerosol nanoparticles, devitrification of the coated silica at high temperature, and subsequent carbon removal by oxidation. The nanosphere size can be well controlled by tuning the size of the colloidal silica precursor. Uniform, high-purity nanocrystalline α-cristobalite is important for catalysis, nanocomposites, advanced polishing, and understanding silica nanotoxicology.
单分散的单晶α-方石英纳米球通过烃热解诱导碳沉积在无定形二氧化硅气溶胶纳米颗粒上、在高温下涂覆的二氧化硅的脱玻化以及随后的氧化除去碳来合成。通过调节胶体二氧化硅前体的尺寸，可以很好地控制纳米球的尺寸。均匀、高纯的纳米晶α-方石英对于催化、纳米复合材料、先进抛光以及理解二氧化硅纳米毒性学是重要的。
