Coloma Alicia, Velty Alexandra, Díaz Urbano
Instituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas 46022 Valencia Spain
RSC Adv. 2023 Mar 30;13(15):10144-10156. doi: 10.1039/d3ra01486j. eCollection 2023 Mar 27.
We present the one-pot synthesis of functionalized organosilica nanoparticles to generate multi-functional hybrid catalysts. Octadecyl, alkyl-thiol and alkyl-amino moieties were used separately and in different combinations, to generate different hybrid spherical nanoparticles with tunable acidic, basic and amphiphilic properties, covalently incorporating up to three organic functional elements onto the surface of the nanoparticles. Several parameters were optimised such as the concentration of the base employed during the hydrolysis and condensation synthesis process that showed a strong influence on the particle size. The physico-chemical properties of the hybrid materials were fully characterized by XRD, elemental and thermogravimetric analysis, electron microscopy, nitrogen adsorption isotherms and C and Si NMR spectroscopy. Finally, the potential uses of the prepared materials as amphiphilic catalysts, with acidic or basic properties for the conversion of biomass molecules into platform chemicals were evaluated.
我们展示了功能化有机硅纳米颗粒的一锅法合成，以生成多功能杂化催化剂。分别使用十八烷基、烷基硫醇和烷基氨基部分，并以不同组合使用，以生成具有可调酸性、碱性和两亲性的不同杂化球形纳米颗粒，将多达三种有机功能元素共价结合到纳米颗粒表面。优化了几个参数，例如水解和缩合合成过程中使用的碱的浓度，该浓度对粒径有很大影响。通过XRD、元素分析和热重分析、电子显微镜、氮吸附等温线以及C和Si NMR光谱对杂化材料的物理化学性质进行了全面表征。最后，评估了所制备材料作为两亲性催化剂的潜在用途，其具有酸性或碱性性质，可用于将生物质分子转化为平台化学品。
