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Pt-on-Pd

Structure and Property of Multifunctional Alloy Heterogeneous Nanostructures Hong Yang, University of Rochester, DMR 0449849.

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Pt-on-Pd

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  1. Structure and Property of Multifunctional Alloy Heterogeneous Nanostructures Hong Yang, University of Rochester, DMR 0449849 Yang group developed several platinum heterogeneous alloy nanostructures based their previous success in using the sequential method for making multifunctional nanoparticles. The particle-on-particle dendritic Pt-M nanostructures (M=Au and Pd) shown in the images on the right can be further converted into alloyed nanoparticles depending on the structural requirements for designed properties. For the development of high performance fuel cell catalysts, the as-made Pt-on-Pd nanoparticles have the proper surface composition and overall morphology for enhanced activity and durability in oxygen reduction reaction (J. Am. Chem. Soc., 2009), while Pt-on-Au nanostructures need to be converted into PtAu alloy for better catalytic performance in direct oxidation of formic acid (Nano Res., 2009). Pt-on-Pd

  2. Structure and Property of Multifunctional Alloy Nanostructures Hong Yang, University of Rochester, DMR 0449849 In 2009, Yang group hosted three undergraduate and one high school interns in his research laboratory. These students have involved in three different research projects. Five of his current graduate students and a visiting scientist are female. Yang group continued to foster strong international collaborations. PI has accepted two students to his University of Rochester group through govern-sponsored scholarship programs. PI also visited several major universities in China. In 2009 Yang group was awarded one US patent and filed two additional provisional US patents. PI co-organized a symposium at the Materials Research Society in 2009. He began to serve as a continuing symposium co-chair for ACS Colloid and Surface Chemistry Division on Nanoparticles and Nanostructured Materials in 2009. The top left photo shows the metal alloy nanostructure team consisting of a PhD candidate, an undergraduate and a high school intern. The bottom left photo shows undergraduate student, Alex, presented his work to his fellow students.

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