Synthesis of Polymer/ZrO2 Core-shell Microspheres and the Corresponding Hollow Porous Zirconia Microspheres
writer：Dianbin Qin, Enwei Yan, Jinhui Yu, Wei Zhang, Bin Liu, and Xinlin Yang*
keywords：Microporpous hollow zirconium oxide
source：期刊
specific source：Mater. Chem. Phys., 136 (2-3), 688-697 (2012). DOI: 10.1016/j.matchemphys.2012.07.043
Issue time：2012年
Narrow-disperse poly(N,N0-methylenebisacryamide-co-methacrylic acid)/zirconium hydroxide (P(MBA-co-MAA)/Zr(OH)4) coreeshell composite microspheres were synthesized by the controlled sole-gel hydrolysis of inorganic zirconium n-butoxide (Zr(OBu)4) precursor in ethanol and acetonitrile mixed solvent with P(MBA-co-MAA) microspheres as templates. The thickness of the outer inorganic Zr(OH)4 shell-layer was well-controlled via altering the mass ratio of Zr(OBu)4 to P(MBA-co-MAA) core particles as well as the water used for the hydrolysis. The corresponding hollow porous zirconium oxide (ZrO2) microspheres were obtained after the selective removal of P(MBA-co-MAA) core via the calcination of P(MBA-co-MAA)/Zr(OH)4 coreeshell microspheres under 550 C for 4 h in air. The structure and morphology of the resultant coreeshell microspheres and the hollow porous ZrO2 microspheres were characterized by transmission electron microscopy (TEM), STEM together with EDX spectrum, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectra, micromeritic analyzer, and thermogravimetric (TGA) analysis.