A facile route to synthesize mesoporous SBA-15 silica spheres from powder quartz

作者：Dong, Xue; Wang, Yi; Dan, Hui^*; Hong, Zhihao; Song, Kunjian; Xian, Qiang; Ding, Yi^*

来源：Materials Letters, 2017, 204: 97-100.

DOI：10.1016/j.matlet.2017.05.115

• Porous materials
• SBA-15 spheres
• HCl concentration
• Powder quartz
• X-ray techniques

A facile route is demonstrated to synthesize mesoporous SBA-15 silica spheres from powder quartz as an inexpensive silica source. P123 dissolved in an HCl solution was used as a structure-directing agent followed by hydrothermal processing of the product at 100 degrees C for 24 h. No other additives were used in the preparation. The morphology and structural order of the samples were strongly influenced by the HCl concentration (M-HCL = 2-4.5) of the P123 solution. At M-HCL < 2.5 the SBA-15 silica morphology was rod-like with a length that decreased and a diameter which increased with increasing HCl concentration. As M-HCL increased between 3 and 4, the morphology became increasingly sphere-like leading to well-formed SBA-15 silica spheres of size ranging from 1 to 4 pm. At M-HCL = 4.5 a less ordered mesoporous structure was observed.

• 出版日期2017-10-1
• 单位西南科技大学