Researchers at the Indian Institute of Technology (IIT), in collaboration with scientists from IIT Kanpur and the University of Campinas, Brazil, have developed a graphene-based nanocomposite material that can selectively convert environmental carbon monoxide into less toxic carbon dioxide.
The new composite material is made of graphene and an alloy of platinum and palladium in the form of nanoparticles. In the project, graphene was used as a substrate and then “decorated” with alloy nanoparticles made of platinum and palladium. The novel catalytic structure was then used for selective oxidation of CO into CO2. The use of a metal particle of certain orientation which absorbs or interacts with CO at lower energy reportedly helped the conversion.