Cetyltrimethylammonium bromide (CTAB) micelle-templated mesoporous SiO₂ particles (MSPs) are synthesized by sol–gel method. The CTAB templated SiO₂ particles (SPs) possessed spherical structure with low average surface roughness (Ra) 1 nm. The CTAB template is effectively removed from SPs by 400 °C heat treatment without any cracks and disruption of the bonding between the functional groups and the SiO₂ surface. After CTAB template removal, SiO₂ microspheres (SMSs) possessed high surface area 640 m²/g, pore radius 10 nm, and Ra ~ 4.4 nm, making them highly attractive for sensing. Thermal gravimetric analysis (TGA) confirmed that SMSs are thermally stable, showing 0.7% weight loss after 429 °C temperature. Phenol red immobilized SMSs show large pKa value 8.1 at 560 nm. Good repeatability, no leaching traces, and fast response time ~0.09 s in basic media suggested that proposed material has potential for opto-chemical sensing/photonic applications.

十六烷基三甲基溴化铵（CTAB）胶束模板的介孔SiO ₂颗粒（MSPs）是通过溶胶-凝胶法合成的。CTAB模板化的SiO ₂颗粒（SPs）具有球形结构，平均表面粗糙度（Ra）低至1 nm。CTAB模板可通过400°C的热处理有效地从SP中去除，而不会出现任何裂纹和官能团与SiO ₂表面之间的键合破裂。去除CTAB模板后，SiO ₂微球（SMS）具有640 m ^2的高表面积/ g，孔半径10 nm和Ra〜4.4 nm，使它们在传感方面极具吸引力。热重分析（TGA）确认SMS是热稳定的，在429°C温度下失重0.7％。苯酚红固定的SMS在560 nm处显示出较大的pKa值8.1。良好的重复性，无浸出痕迹以及在基本介质中的〜0.09 s的快速响应时间表明所提出的材料具有光化学传感/光子应用的潜力。