Effect of copper dispersion on SBA-15 and SBA-16 affinity towards carbon dioxide—an approach through thermal programmed desorption

A new approach for the synthesis of zero-valent copper nanoparticles (CuNPs) supported on ordered mesoporous silica SBA-15 and SBA-16 by using vegetal antioxidants, coffee Robusta green tea was developed in present work. Diverse characterization techniques such as X-ray diffraction, nitrogen adsorption–desorption, transmission electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy thermal programmed desorption CO2 water allowed stating that appreciable specific surface area porosity favor CuNP formation. Copper-loaded exhibited higher basicity hydrophilic character according to type source reducing agents framework, respectively. OH-compounds interactions with both SBA more particularly available Si–O-Si groups were found promote metal dispersion particle size. The results obtained herein open promising prospects designing low cost “green” silica-based materials judiciously tailored catalysis, adsorption other processes.