Poisoning of bubble propelled catalytic micromotors: The chemical environment matters

dc.bibliographicCitation.firstPage2909eng
dc.bibliographicCitation.issue7eng
dc.bibliographicCitation.journalTitleNanoscaleeng
dc.bibliographicCitation.volume5eng
dc.contributor.authorZhao, G.
dc.contributor.authorSanchez, S.
dc.contributor.authorSchmidt, O.G.
dc.contributor.authorPumera, M.
dc.date.accessioned2020-11-12T07:21:55Z
dc.date.available2020-11-12T07:21:55Z
dc.date.issued2013
dc.description.abstractSelf-propelled catalytic microjets have attracted considerable attention in recent years and these devices have exhibited the ability to move in complex media. The mechanism of propulsion is via the Pt catalysed decomposition of H2O2 and it is understood that the Pt surface is highly susceptible to poisoning by sulphur-containing molecules. Here, we show that important extracellular thiols as well as basic organic molecules can significantly hamper the motion of catalytic microjet engines. This is due to two different mechanisms: (i) molecules such as dimethyl sulfoxide can quench the hydroxyl radicals produced at Pt surfaces and reduce the amount of oxygen gas generated and (ii) molecules containing -SH, -SSR, and -SCH3 moieties can poison the catalytically active platinum surface, inhibiting the motion of the jet engines. It is essential that the presence of such molecules in the environment be taken into consideration for future design and operation of catalytic microjet engines. We show this effect on catalytic micromotors prepared by both rolled-up and electrodeposition approaches, demonstrating that such poisoning is universal for Pt catalyzed micromotors. We believe that our findings will contribute significantly to this field to develop alternative systems or catalysts for self-propulsion when practical applications in the real environment are considered.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://doi.org/10.34657/4506
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/5877
dc.language.isoengeng
dc.publisherCambridge [u.a.] : Royal Society of Chemistryeng
dc.relation.doihttps://doi.org/10.1039/c3nr34213a
dc.relation.issn2040-3364
dc.rights.licenseCC BY 3.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/eng
dc.subject.ddc540eng
dc.subject.otherAlternative systemseng
dc.subject.otherChemical environmenteng
dc.subject.otherDifferent mechanismseng
dc.subject.otherHydroxyl radicalseng
dc.subject.otherOrganic moleculeseng
dc.subject.otherPlatinum surfaceeng
dc.subject.otherReal environmentseng
dc.subject.otherSelf-propulsioneng
dc.subject.otherCatalysiseng
dc.subject.otherDimethyl sulfoxideeng
dc.subject.otherJet engineseng
dc.subject.otherJetseng
dc.subject.otherMicromotorseng
dc.subject.otherMoleculeseng
dc.subject.otherPropulsioneng
dc.subject.otherPlatinumeng
dc.subject.otherdimethyl sulfoxideeng
dc.subject.otherhydrogen peroxideeng
dc.subject.otherplatinumeng
dc.subject.otherthiol derivativeeng
dc.subject.otherarticleeng
dc.subject.othercatalysiseng
dc.subject.otherchemistryeng
dc.subject.otherelectroplating industryeng
dc.subject.otherenvironmenteng
dc.subject.othergaseng
dc.subject.othermethodologyeng
dc.subject.otherstandardeng
dc.subject.otherCatalysiseng
dc.subject.otherDimethyl Sulfoxideeng
dc.subject.otherElectroplatingeng
dc.subject.otherEnvironmenteng
dc.subject.otherGaseseng
dc.subject.otherHydrogen Peroxideeng
dc.subject.otherPlatinumeng
dc.subject.otherSulfhydryl Compoundseng
dc.titlePoisoning of bubble propelled catalytic micromotors: The chemical environment matterseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorIFWDeng
wgl.subjectChemieeng
wgl.typeZeitschriftenartikeleng
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