In­dian sci­en­tists de­velop nanocom­pos­ite that clean air

Chemical Industry Digest - - New Developments -

Ateam of sci­en­tists at the In­dian In­sti­tute of Tech­nol­ogy (IIT) Gand­hi­na­gar have de­vel­oped a nanocom­pos­ite ma­te­rial that can se­lec­tively con­vert en­vi­ron­men­tal car­bon monox­ide into less toxic car­bon diox­ide.

The new com­pos­ite ma­te­rial is made of graphene and al­loy of plat­inum and pal­la­dium in the form of nanopar­ti­cles. Graphene was used as sub­strate and then ‘dec­o­rated’ with al­loy nanopar­ti­cles of plat­inum and pal­la­dium. The novel cat­alytic struc­ture was then used for se­lec­tive ox­i­da­tion of CO into CO .

2 The use of metal par­ti­cle of cer­tain ori­en­ta­tion which ab­sorb or in­ter­act with CO at lower en­ergy helped the con­ver­sion.

The study was done by re­searchers from IIT Gand­hi­na­gar, in col­lab­o­ra­tion with sci­en­tists from IIT Kan­pur and Univer­sity of Camp­inas, Brazil. The re­search re­sults have been pub­lished in jour­nal Nanoscale of the Royal So­ci­ety of Chem­istry.

The cat­alytic be­hav­iour of the nanocom­pos­ite was stud­ied us­ing dif­fer­ent mor­pholo­gies for the ox­i­da­tion of CO. The con­ver­sion rate var­ied along with the flow rate of CO as well as tem­per­a­ture, show­ing full con­ver­sion at tem­per­a­tures rang­ing from 75 to 125 de­grees.

The new ma­te­rial could po­ten­tially find use in chem­i­cal in­dus­tries as well as en­vi­ron­men­tal clean­ing, re­searchers said.

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