Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, School of Chemistry and Materials Science, Xi'an 710062, PR China.
J Colloid Interface Sci. 2011 Oct 15;362(2):253-60. doi: 10.1016/j.jcis.2011.06.062. Epub 2011 Jul 7.
In this paper, a strategy for hollow porous silica microspheres with ideally flower structure is presented. SiO(2)/PAM hybrid composite microspheres with porous were synthesized by the reaction that the porous polyacrylamide (PAM) micro-gels immersed in tetraethoxysilane (TEOS) anhydrous alcohol solution and water in a moist atmosphere, with ammonium hydroxide as a catalyst. The SiO(2) hollow microspheres with porous were obtained after calcination of the composite microspheres at 550 °C for 4 h. The morphology, composition, and crystalline structure of the microspheres were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermo-gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FI-IR), and X-ray diffraction (XRD), N(2) absorption analysis, respectively. The results indicated that the obtained hollow porous SiO(2) microspheres were a perfect flower structure.
本文提出了一种具有理想花状结构的中空多孔硅微球的策略。在潮湿气氛中，将多孔聚丙烯酰胺（PAM）微凝胶浸入正硅酸乙酯（TEOS）无水乙醇溶液和水中，并以氨水作为催化剂，合成了具有多孔的 SiO(2)/PAM 杂化复合微球。将复合微球在 550°C 下煅烧 4 小时后，得到具有多孔的 SiO(2)中空微球。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、热重分析（TGA）、傅里叶变换红外光谱（FI-IR）和 X 射线衍射（XRD）、N(2)吸收分析分别对微球的形貌、组成和晶体结构进行了表征。结果表明，所得到的中空多孔 SiO(2)微球具有完美的花状结构。
