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2021-11-16Zeitschriftenartikel DOI: 10.1002/celc.202101290
Graphene-Mercury-Graphene Sandwich Electrode for Electroanalysis
dc.contributor.authorGrosser, Tobias
dc.contributor.authorWehrhold, Michel
dc.contributor.authorNeubert, Tilmann Joachim
dc.contributor.authorBalasubramanian, Kannan
dc.date.accessioned2022-05-31T10:03:29Z
dc.date.available2022-05-31T10:03:29Z
dc.date.issued2021-11-16none
dc.date.updated2022-03-21T12:20:52Z
dc.identifier.urihttp://edoc.hu-berlin.de/18452/25366
dc.description.abstractWe present a new class of hybrid 2D electrodes, where mercury is incorporated between two graphene monolayers, prepared by bottom-up assembly. First, the bottom graphene layer is electrochemically modified leading to the creation of fine mercury nanodroplets of variable size on the graphene surface. Although such electrodes show good sensitivity to heavy metal ions, their stability is limited due to the outgassing of mercury over time. After coverage with a top monolayer, the graphene surface is rendered with the favorable properties of mercury such as the high overpotential for hydrogen evolution, the ability to work at a broader cathodic potential range and higher sensitivity towards heavy metal ions such as Cd2+ and Pb2+. Most importantly, the outgassing of mercury is completely hindered by the top layer, which yields a stable mercury-like electrode but with a carbonaceous non-toxic interface. We attribute the favorable properties of the sandwich electrode to the subsurface mercury present below the top graphene sheet, which renders it with new electrochemical properties.eng
dc.description.sponsorshipGerman Science Foundation (DFG)
dc.description.sponsorshipGraduate School of Analytical Sciences Adlershof
dc.description.sponsorshipMPI Stuttgart
dc.description.sponsorshipHZB http://dx.doi.org/10.13039/100013110
dc.description.sponsorshipHU Berlin
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY-NC-ND 4.0) Attribution-NonCommercial-NoDerivatives 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject2D materialseng
dc.subjectgrapheneeng
dc.subjectintercalationseng
dc.subjectelectrochemical modificationeng
dc.subjectmercury filmeng
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftennone
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete Tätigkeitennone
dc.titleGraphene-Mercury-Graphene Sandwich Electrode for Electroanalysisnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/25366-4
dc.identifier.doi10.1002/celc.202101290none
dc.identifier.doihttp://dx.doi.org/10.18452/24699
dc.type.versionpublishedVersionnone
local.edoc.container-titleChemElectroChemnone
local.edoc.pages9none
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultätnone
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameWiley-VCHnone
local.edoc.container-publisher-placeWeinheimnone
local.edoc.container-volume8none
local.edoc.container-issue22none
local.edoc.container-firstpage4277none
local.edoc.container-lastpage4285none
dc.description.versionPeer Reviewednone
dc.identifier.eissn2196-0216

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