Akademickie Centrum Materiałów i Nanotechnologii AGH zaprasza na seminarium, które odbędzie się w formie hybrydowej 9 czerwca 2022 r. o godz. 14.00.
Wykład zatytułowany „Nano-engineered Gold Surface: from Organic Surface Modification to Nanosensors, Nanocatalysts and Nanoelectrodes Design” wygłosi dr Abdolhamid Alizadeh (Center for International Scientific Cooperation, Iran).
Monolayer-protected nanoparticles (MPNs) possess unique features allowing them to be utilized in applications ranging from catalysis and chemical sensing to possible media for the delivery and controlled release of multiple substrates from their surfaces. Some applications require particular control of the size range of the metal cores. For example, sensing processes often rely on detecting changes in the Plasmon absorption band, a phenomenon notable in metal cores (Au, Ag, ...) in excess of 2-3 nm in diameter, upon a substrates interaction with the monolayer anchored to the nanoparticle. Although there are a number of useful methods for the preparation of organic soluble MPNs, there remains a need to develop alternative procedures capable of targeting larger monodisperse MPNs that can be more difficult to access through the present synthetic methodologies.
During our several years investigations into using gold (AuNPs) and magnetic (Fe3O4NPs) nanoparticles probes as a means of elucidating mobility and reactivity constraints imposed on substrates that are incorporated onto MPNs surfaces, we have shown a variety of unique and green routes for their preparation. A series of novel applications have been also developed for these Au and Fe3O4 nanoparticles. Our efforts have been mainly focused on surface modification of the AuNPs and Fe3O4NPs with organic moieties and employment of these nano-engineered nanoparticles in chemical sensing of metal ions and organic pollutants, as catalysts in chemical transformations and in nanoelectrodes design.
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