Synthesis and Formation of Plasmonic SnO₂@Au (Purple of Cassius) Nanostructures Using Reverse Micelle Templating for Chemiresistive Gas Sensing Applications

This study focusses on the synthesis of SnO<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>@Au nanostructures using a reverse micelle templating approach. The presence of Au would act to make the Sn O<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> @Au nanostructures plasmonic, improve charge transfer and overall conductivity, and would form a Schottky junction. The polymer composition and Au/Sn ratios were varied to optimize the nanostructures, and the LSPR peaks were measured using UV-Vis spectroscopy. The results are used in optimizing the properties of Sn O<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>@Au nanostructures for effective chemiresistive gas sensing.