IEC 89 |
| S. Ismat Shah, Departments of Materials Science and Physics, Departments of Materials Science and Physics, University of Delaware, Newark, DE 19808 |
| There are two areas of interest in environmental technology where nanocatalysts are potentially useful. These areas include (i) reduction of the pollutant emissions (ii)decrease of the concentration of already existing pollutants. I will describe two specific materials to exemplify these two types of Nanocatalysts. TiO2 has been known to be a photocatalyst for the degradation of various organic and inorganic pollutants. I will describe what part does the nanostructure plays in increasing the photocatalytic efficiency of TiO2. I will also give example of a nanocatalyst for emission control of the pollutants, specifically, for NOx. In most NOx emission control schemes either a precious metal (Pt, Pd, Ru, etc.) or a toxic gas (ammonia) is used. There is a need for an alternative catalyst. I will present some recent results on nano WCx as a potential alternative to the precious metals at a considerably lower cost.
|
|
Nanotechnology and the Environment
8:30 AM-11:55 AM, Tuesday, March 25, 2003 Convention Center -- Room 392, Oral
Division of Industrial and Engineering Chemistry |