A SWOLLEN LIQUID CRYSTALLINE TEMPLATE MECHANISM TO SYNTHESIZE HIERARCHICAL POROUS MATERIALS

An important new understanding of how oil volume influences particle morphology and structural properties is provided by the analysis of calcined silica materials with different oil contents. According to SEM examination, with 0% oil, the morphology is primarily spherical particles; at higher oil percentages, more complex structures are present, with agglomerates in the 33% sample standing out as particularly noteworthy. This implies that different morphologies result from altered particle interactions during synthesis due to an increase in oil content. While a bimodal pore size distribution was visible in the 1% and 33% samples, TEM examinations of the 1% oil sample showed well-defined pore structures, suggestive of an efficient surfactant micelle assembly. According to this bimodality, the presence of oil improves the templating mechanism and encourages a wide variety of pore diameters, which may be useful for applications needing various adsorption properties. BET surface area measurements revealed a significant rise in specific surface area, peaking at 1% and 33% oil volumes, which was correlated with oil content. This demonstrates a connection between the presence of oil and the formation of a porous framework, which is essential for improving the accessibility and reactivity of materials during catalytic reactions. The structural ordering was further clarified by XRD patterns, which showed prominent peaks representing well-ordered hexagonal pore configurations in the 1% and 33% oil samples. Achieving structural integrity requires the integration of oil, as evidenced by the weak ordering observed in the 0% oil sample. Overall, the data show that adjusting the chemical and physical properties of silica materials to suit different industrial uses better requires a certain amount of oil.