METAL-CONTAINING NANOWIRES PREPARED USING MESOPOROUS MOLECULAR SIEVES AS TEMPLATES, AND THEIR USE IN SMOKING ARTICLES

摘要

Cut filler compositions, smoking articles such as cigarettes 2, methods formaking cigarettes and methods for treating cigarette smoke are provided, whichinvolve the use of metal-containing nanowires. The metal-containing nanowiresare capable of removing at least one constituent from tobacco smoke,preferably in a selective manner. The metal-containing nanowires may compriseany suitable metal, metal oxide or mixtures thereof . For example, the metal-containing nanowires comprise at least one transition or lanthanide metal ormetal oxide thereof . Exemplary metals or metal oxides thereof include, butare not limited to, iron, copper, zinc, titanium, vanadium, palladium, cobalt,molybdenum and manganese. The metal-containing nanowires may be produced by(i) loading at least one metal-containing composition into a mesoporousmolecular sieve substrate via repeated incipient-wetness impregnation followedby stepwise calcination to form said nanowires; and (ii) isolating thenanowires by extracting the mesoporous molecular sieve substrate, e.g. , withaqueous NaOH.