One of our recent research works, “Synthesis of Thermally Stable and Highly Active Bimetallic Au-Ag Nanoparticles on Inert Supports” (2009, 21, 410-418), has been published on the Chemistry of Materials. We have successfully prepared highly thermo-stable and well dispersed Au-Cu nano-sized alloys inside the zeolite channels (Chem. Commun. 2008, 3187–3189). This research seeks to extend our understanding of the preparation procedure and the origin of their stability. It is concluded that alloying gold with a second metal such as Ag and Cu can greatly enhance the stability of the nanoparticles against high temperature treatment. The paper was highly valued by the reviewers and recommended as cover story through May to June by the editor.
Heterogeneous catalysis via nano-sized metal particles is a hot research topic in recent years. Our group, headed by Prof. Tao ZHANG, has been engaging in the investigations of highly efficient supported catalysts through the modifying and controlling of the particles sizes of the active components, especially catalysts aiming at space-technology applications. Up to now, we have developed novel catalyst systems by means of the above mentioned techniques, such as ordered activated carbon-supported iridium catalysts (Chem. Mater. 2008, 20, 1881–1888), nano-sized molybdenum carbide catalysts (Chem. Commun., 2008, 2565–2567), and Au-Cu nano-sized alloy inside the zeolite channels(Chem. Commun. 2008, 3187–3189).