Pt摻雜TiO-,2--Ti電極的制備及其電化學行為研究.pdf

1、南京航空航天大學碩士學位論文Pt摻雜TiOTi電極的制備及其電化學行為研究姓名：雷斌申請學位級別：碩士專業(yè)：環(huán)境工程指導教師：崔益華20080301Pt摻雜TiO2Ti電極的制備及其電化學行為研究IIABSTRACTPtTiO2Tielectrodewaspreparedbytwostepsofanodicoxidationfollowedbycathodicelectrodeposition.Themicrostructureelec

2、trocatalyticperfmanceoftheelectrodewereinvestigatedbyXraydiffraction(XRD)scanningelectronmicroscopy(SEM)linearpotentialsweep(LPS)cyclicvoltammetry(CV).Theresearchresultsindicatedthatnanoscaleplatinumparticleswerehomogene

3、ouslydispersedonthesurfaceofTiO2nanotubestheelectrodeexhibitedtypicalelectrochemicalpropertiesofplatinumwellelectrocatalyticperfmance.TheelectrocatalyticpropertiesofmethanolonPtTiO2Tielectrodewereinvestigatedbycyclicvolt

4、ammetry.TheresearchresultsindicatedthattheelectrocatalyticreactivityofmethanolonPtTiO2TielectrodewasimprovedwithincreasingdepositiontimeofplatinumheattreatmentsignificantlyimprovedtheelectrocatalyticperfmanceofPtTiO2Tiel

5、ectrode.withincreasingscansofcyclicvoltammtrythepeakcurrentofphenoloxidationincreased.SimulativephenolwastewaterwaselectrodegradedinaelectrobathwithnodissepimentusingPtTiO2Ticompositeelectrodeasanodestainlesssteelplateas

6、cathode.ThefactssuchasinitialphenolconcentrationpHelectrolyteconcentrationreactiontemperaturewereinvestigated.Theremovalrateofphenoldecreasedasincreaseofinitialphenolconcentration.Thereisanoptimumelectrolyteconcentration

7、of0.2molLintheexperiment.Thestrongeracidicconditionhighertemperaturethebetterphenolremovalratewereachieved.TheelectrocatalyticactivityofphenolonPtTiO2Tielectrodewasalsoinvestigatedbycyclicvoltammetrylinearpotentialsweep.

8、ItwasdemonstratedthattheoxidationofphenolonPtTiO2Tielectrodeinvolvesbothdirectindirectanodicoxidationprocesswhichwasmainlycontrolledbydiffusionprocess.Thephenoloxidationisanirreversibleprocessincludingdiffusionadsptionch