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Cai L, Hou B, Shang Y, Xu L, Zhou B, Jiang X, Jiang X. Synthesis of Fe3O4/graphene oxide/pristine graphene ternary composite and fabrication electrochemical sensor to detect dopamine and hydrogen peroxide. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136797] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hou B, Liu H, Qi S, Zhu Y, Zhou B, Jiang X, Zhu L. Preparation of pristine graphene in ethanol assisted by organic salts for nonenzymatic detection of hydrogen peroxide. J Colloid Interface Sci 2018; 510:103-110. [DOI: 10.1016/j.jcis.2017.09.052] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 10/18/2022]
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Halevy S, Bochlin Y, Kadosh Y, Kaplan A, Avraham H, Nissim A, Ben Hamo R, Ohaion-Raz T, Korin E, Bettelheim A. Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization. Sci Rep 2017; 7:4987. [PMID: 28694454 PMCID: PMC5504004 DOI: 10.1038/s41598-017-05269-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 05/25/2017] [Indexed: 11/17/2022] Open
Abstract
New coatings are obtained when graphene oxide is further oxidized at moderate anodic potentials (≤~1.3 V vs. Ag/AgCl). Based on a variety of spectroscopic and electrochemical observations, the coatings are attributed to the direct electropolymerization of graphene oxide sheets via oxidation of the phenol edge groups on graphene. Depending on the applied potential, ether or carboxylic groups are formed. The coatings obtained via further oxidation are characterized by a lower O/C ratio due to decarboxylation and a higher content of C=C bonds. These bonds extend aromatic conjugation into the combined graphene oxide sheets and are responsible for the highly conductive nature of these coatings.
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Affiliation(s)
- S Halevy
- Chemical Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Y Bochlin
- Chemical Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Y Kadosh
- Chemical Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - A Kaplan
- Chemical Engineering Department, MIT, Cambridge, MA, 02139, USA
| | - H Avraham
- Chemistry Department, NRCN, P.O. Box 9001, Beer-Sheva, 84190, Israel
| | - A Nissim
- Chemistry Department, NRCN, P.O. Box 9001, Beer-Sheva, 84190, Israel
| | - R Ben Hamo
- Chemical Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - T Ohaion-Raz
- Chemistry Department, NRCN, P.O. Box 9001, Beer-Sheva, 84190, Israel
| | - E Korin
- Chemical Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - A Bettelheim
- Chemical Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel.
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Simultaneous detection of hydroquinone and catechol on electrochemical-activated glassy carbon electrode by simple anodic and cathodic polarization. J Solid State Electrochem 2016. [DOI: 10.1007/s10008-016-3426-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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