Structural, chemical, morphological, and hydrophilic surface characteristics of SBA-15 silica synthesized by hydrothermal method in an autoclave and in a microwave-heated reactor were analyzed in this work. The influence of time and temperature on these characteristics was investigated. Materials were characterized by textural analysis (BET), FTIR, TGA, XRD, goniometer contact angle, SEM, and TEM. It was possible to obtain SBA-15 silicas assisted by microwave heating irradiation with short-time synthesis (0.5–8 h) compared with the hydrothermal classic method (24 h). Materials presented surface area between 650 and 850 m² g⁻¹. Through the XRD and TEM results, it was observed that mesostructured materials with two-dimensional, long-range, and hexagonal ordered channels are characteristic of SBA-15. This study showed that heating by microwave irradiation during silica synthesis generates materials with a greater amount of silanol groups. It is possible to control the surface properties of SBA-15 during the microwave-assisted synthesis through temperature tuning. Higher temperature provided SBA-15 with higher hydrophilicity.

在这项工作中，分析了通过水热法在高压釜和微波加热反应器中合成的SBA-15二氧化硅的结构，化学，形态和亲水表面特性。研究了时间和温度对这些特性的影响。通过质地分析（BET），FTIR，TGA，XRD，测角仪接触角，SEM和TEM对材料进行表征。与传统的水热法（24小时）相比，通过微波加热辐射进行短时间合成（0.5-8小时）可以得到SBA-15二氧化硅。材料的表面积介于650和850 m ²  g ^-1之间。通过XRD和TEM结果，观察到具有二维，远距离和六边形有序通道的介观结构材料是SBA-15的特征。这项研究表明，在二氧化硅合成过程中通过微波辐射加热会生成具有大量硅烷醇基团的材料。通过温度调节可以在微波辅助合成过程中控制SBA-15的表面性质。更高的温度为SBA-15提供了更高的亲水性。