Abstract
In this paper we report a soft route leading to spherical or rod nanoparticles confined in SBA-15 thin films exhibiting a hexagonal mesostructure. For that purpose, these transparent mesoporous silica thin films are elaborated in the presence of a non ionic triblock copolymer P123 as structure directing agent. After soaking in a silver salt solution, they are heat treated to grow silver structures. In function of several experimental parameters as the immersion time in the silver salt solution, the solvent of the silver salt solution or the heat treatment temperature, nanorods and/or nano spherical particles can be obtained. These coloured samples are characterized by X-ray diffraction (XRD), ultraviolet–visible (UV–vis) absorption and Fourier transformed infrared (FTIR) spectroscopies, atomic force microscopy (AFM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The presence of the nanorods has been showed by using polarized UV–vis spectroscopy. The results show that most of silver nanoparticles grow inside the film thickness.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
