Selective detection of Hg2+ ions based on reduced graphene oxide sensor device

Title
Selective detection of Hg2+ ions based on reduced graphene oxide sensor device
Author(s)
심재진Liyou Wang[Liyou Wang]Cuiping Gu[Cuiping Gu]첸카이카이황지아루이
Keywords
Cadmium compounds; Electrolytic reduction; Ions; Lead; Microelectrodes; Self assembly; Sensors; Detection limits; Electrochemical reductions; Electron deficiency; Gold microelectrodes; High selectivity; High sensitivity; Reduced graphene oxides; Selective detection; Graphene
Issue Date
201501
Citation
Sensor Letters, v.13, no.1, pp.13 - 18
Abstract
A reduced graphene oxide sensor device was fabricated by the self-assembly of graphene oxide onto an interdigitated gold microelectrode followed by electrochemical reduction. The sensor exhibited high sensitivity and selectivity to Hg2+ ions. The sensor response (��I) increased linearly with increasing concentration in the range, 40 nM to 3240 nM. The sensitivity and detection limit of this method were estimated to be 0.08833 nA nM-1 and 7.8 nM, respectively. Compared to Cd2+, Pb2+, Ba2+, Ca2+, Cu2+ , and Ni2+ ions, the sensor exhibited high selectivity to Hg2+ ions. The adsorption of Hg2+ ions on the surface of rGO enhanced its electron-deficiency and increased the conductivity. Copyright ? 2015 American Scientific Publishers
URI
http://hdl.handle.net/YU.REPOSITORY/33648http://dx.doi.org/10.1166/sl.2015.3403
ISSN
1546-198X
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공과대학 > 화학공학부 > Articles
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