Pore size control of monodisperse silica particles by dual template sol–gel method

• Published in: Journal of sol-gel science and technology Vol. 94; no. 1; pp. 186 - 194
• Main Authors: Wang, Qiuhua, Wang, Huiying, Wu, Yaling, Cheng, Lingping, Zhu, Lunan, Zhu, Junchen, Li, Zhidong, Ke, Yanxiong
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.04.2020; Springer Nature B.V
• Subjects: Ceramics; Chemistry and Materials Science; Composites; Dodecylamine; Glass; hybrids and solution chemistries; Inorganic Chemistry; Materials Science; Nanotechnology; Natural Materials; Optical and Electronic Materials; Original Paper: Sol–gel; Pore size; Porosity; Silicon dioxide; Sol-gel processes; Surfactants; Synthesis; Tin; DDA; Jeffamine; Mesoporous; Silica sphere
• ISSN: 0928-0707; 1573-4846
• DOI: 10.1007/s10971-019-05152-7

Sub 2-μm monodisperse mesoporous silica spheres (MMSS) were synthesized using a mixed template system in a MeOH/H 2 O solution. 1-Dodecylamine (DDA) and polymeric type Jeffamine surfactants, including D2000, D4000, and T5000, were employed as templates. These mixed template syntheses realized to gain MMSS materials with good spherical shape and uniform particle size. When the MeOH/H 2 O (v/v) ratio was controlled between 2.5:1 and 3.0:1, mesoporous silica spheres of 2.10–2.35 μm with excellent dispersibility can be obtained. Depending on the surfactant chain length of Jeffamine, hydrothermal aging pH (4–9), time (12–24 h), and temperature (80–140 °C), MMSS with large-pore sizes (up to 14.3 nm), surface areas (153–791 m 2 /g), and pore volumes (0.47–1.28 cm 3 /g) can be synthesized. Highlight Monodisperse mesoporous silica spheres.