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ID:38593569
大小:1.70 MB
页数:18页
时间:2019-06-15
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1、Enhancedcatalytichydrodechlorinationof2,4-dichlorophenoxyaceticacidbynanoscalezerovalentironwithelectrochemicaltechniqueusingapalladium/nickelfoamelectrode马晓云1.Enhancedcatalytichydrodechlorinationof2,4-dichlorophenoxyaceticacid2.SynergistictechnologycombinednZVIwi
2、thelectrochemistry3.Palladiumloadingandcurrentdensityhadagreaterimpactonefficiencies4.nZVIpromotedthegenerationofelectronandenhancedthedechlorinationhighlightsobjectivesToexplorewhetherthereweresynergisticeffectbetweenelectrochemicaltechnologyandnZVI,andhowwasthee
3、ffect;Toevaluatefactorsaffecting2,4-Dhydrodechlorinationinthesynergisticsystem,includingpalladiumloading,nZVIdosageandcurrentdensity;Todiscussthereactionmechanismofthissynergisticsystemfor2,4-Dhydrodechlorination.ResultsanddiscussionFig.1.TheXRDpatternsof(a)cataly
4、ticelectrodesand(b)nZVI.ResultsanddiscussionFig.3.TheTEMmicrographofnZVI.ResultsanddiscussionFig.2.TheSEMmicrographsof(a)freshNifoamelectrodeand(b)Pd/Nifoamelectrode.ResultsanddiscussionFig.4.TheEDXspectraofPd/Nifoamelectrodes(a)beforeand(b)afterreaction.Resultsan
5、ddiscussionSynergisticeffectbetweenelectrochemistryandnZVIon2,4-DhydrodechlorinationResultsanddiscussionEffectsofpalladiumloadingResultsanddiscussionEffectsofpalladiumloadingResultsanddiscussionEffectsofnZVIdosageResultsanddiscussionEffectsofnZVIdosageResultsanddi
6、scussionEffectsofcurrentdensityResultsanddiscussionEffectsofcurrentdensityResultsanddiscussionMechanismanalysisResultsanddiscussionMechanismanalysis(a)PhotosofreactionsolutionsatdifferentreactiontimeduringthedechlorinationprocessResultsanddiscussionMechanismanalys
7、is(b)schematicillustrationofdechlorinationmechanisminthesynergisticsystem.conclusion.ThecombinedtechnologyofelectrochemistryandnZVIisapromisingtechnologyforthedegradationof2,4-Dandforthecontrolofenvironmentalpollution.Thesynergistictechnologyisworthytointegratewit
8、hotherprocessingtechnologiesforpollutionremediationinfuturestudies.
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