|About this Abstract
||Materials Science & Technology 2012
||Nanotechnology for Energy, Environment, Healthcare and Industry
||A New Architecture for Robust Nano-Catalysts: Palladium on Hierarchical Carbon Structures
||Hema Vijwani, Sharmila M. Mukhopadhyay
|On-Site Speaker (Planned)
Catalytic activity can be significantly enhanced if the exposed surface area in a given volume is increased. This project demonstrates such enhancement using a palladium-graphite system supported on hierarchical graphitic nanostructures. Palladium-nanoparticles are deposited on porous carbon-foam substrates whose surface area has been increased by orders of magnitude through the attachment of carbon nanotubes. This type of structure can lead to unprecedented miniaturization of catalytic devices. Moreover, the nanoparticles and nanotubes are structurally durable, and remain attached to the base support after long periods of rapid rotation in water that indicates lower risk of material degradation and/or environmental. Fabrication issues of these structures will be presented along with microstructure and spectroscopic analysis. The results suggest potential adaptation of these hybrid structures in robust catalytic devices such as sensors, water purification systems, fuel cell electrodes and hydrogen storage sponges. Electrochemical behavior and water purification capabilities of these structures are being investigated.