▎ 摘　　要

NOVELTY - Reducing the amount of a species in a vapor phase sample, comprises: contacting a vapor phase sample containing a first concentration of the species with a composition comprising substituted graphene or graphene oxide molecules such that the vapor phase sample has a second, decreased concentration of the species after contact with the composition. USE - The methods and catalyst composition are useful for reducing the amount of a species in a vapor phase sample; and for the oxidation of carbon monoxide (all claimed). DETAILED DESCRIPTION - INDEPENDENT CLAIMS are: (1) a catalyst composition for oxidation of carbon monoxide, comprising: a graphene or graphene oxide molecule comprising at least one functional group having the structure of Formula (1); and (2) a method for oxidation of carbon monoxide, comprising: contacting a sample comprising carbon monoxide with a graphene or graphene oxide molecule comprising at least one functional group having the structure of Formula (1). R1, R2, and R3=the same or different and each is independently a substituent, optionally substituted, where at least one of R1, R2, and R3 comprises a catalytic moiety capable of oxidizing carbon monoxide to carbon dioxide; and G=a carbon atom of the graphene or graphene oxide.