%0 Journal Article
%T anodicoxidationofformicacidonpdauir/c-sb<sub>2</sub>o<sub>5</sub>·sno<sub>2</sub>electrocatalystspreparedbyborohydridereduction
%A a.
%A o.
%A neto
%A j.
%A nandenha
%A r.
%A f.
%A b.
%A de
%A souza
%A g.
%A sbuzzo
%A j.
%A c.
%A m.
%A silva
%A e.
%A v.
%A spinacé
%A m.
%A h.
%A m.
%A t.
%A assump？？o
%J 燃料化学学报
%P 851-857
%D 2014
%X ？pdauir/c-sb2o5·sno2electrocatalystswithpd：au：irmolarratiosof90：5：5，70：20：10and50：45：5werepreparedbyborohydridereductionmethod.theseelectrocatalystswerecharacterizedbyedx，x-raydiffraction，transmissionelectronmicroscopyandthecatalyticactivitytowardformicacidelectro-oxidationinacidmediuminvestigatedbycyclicvoltammetry（cv），chroamperometry（ca）andtestsondirectformicacidfuelcell（dfafc）at100℃.x-raydiffractogramsofpdauir/c-sb2o5·sno2electrocatalystsshowedthepresenceofpdfccphase，pd-aufccalloys，carbonandatophases，whileirphaseswerenotobserved.temmicrographsandhistogramsindicatedthatthenanoparticleswerenotwelldispersedonthesupportandsomeagglomerates.thecyclicvoltammetryandchroamperometrystudiesshowedthatpdauir/c-sb2o5·sno2（50：45：5）hadsuperiorperformancetowardformicacidelectro-oxidationat25℃comparedtopdauir/c-sb2o5·sno2（70：20：10），pdauir/c-sb2o5·sno2（90：5：5）andpd/c-sb2o5·sno2electrocatalysts.theexperimentsinasingledfafcalsoshowedthatallpdauir/c-sb2o5·sno2electrocatalystsexhibitedhigherperformanceforformicacidoxidationincomparisonwithpd/c-sb2o5·sno2electrocatalysts，howeverpdauir/c-sb2o5·sno2（90：5：5）hadsuperiorperformance.theseresultsindicatedthattheadditionofauandirtopdfavortheelectro-oxidationofformicacid，whichcouldbeattributedtothebifunctionalmechanism（thepresenceofato，auandiroxidesspecies）associatedtotheelectroniceffect（pd-aufccalloys）.
%K pdauir/c-sb2o5·
%K sno2electrocatalysts
%K formicacidoxidation
%K fuelcell
%K borohydridereductionprocess
%U http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18456.shtml