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      Palladium supported on polypyrrole/reduced graphene oxide nanoparticles for simultaneous biosensing application of ascorbic acid, dopamine, and uric acid

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          Abstract

          In this study, we report a facile and effective production process of palladium nanoparticles supported on polypyrrole/reduced graphene oxide (rGO/Pd@PPy NPs). A novel electrochemical sensor was fabricated by incorporation of the prepared NPs onto glassy carbon electrode (GCE) for the simultaneous detection of ascorbic acid (AA), dopamine (DA) and uric acid (UA). The electrodes modified with rGO/Pd@PPy NPs were well decorated on the GCE and exhibited superior catalytic activity and conductivity for the detection of these molecules with higher current and oxidation peak intensities. Simultaneous detection of these molecules was achieved due to the high selectivity and sensitivity of rGO/Pd@PPy NPs. For each biomolecule, well-separated voltammetric peaks were obtained at the modified electrode in cyclic voltammetry (CV) and differential pulse voltammetry (DPV) measurements. Additionally, the detection of these molecules was performed in blood serum samples with satisfying results. The detection limits and calibration curves for AA, DA, and UA were found to be 4.9 × 10 −8, 5.6 × 10 −8, 4.7 × 10 −8 M (S/N = 3) and ranging from 1 × 10 −3 to 1.5 × 10 −2 M (in 0.1 M PBS, pH 3.0), respectively. Hereby, the fabricated rGO/Pd@PPy NPs can be used with high reproducibility, selectivity, and catalytic activity for the development of electrochemical applications for the simultaneous detection of these biomolecules.

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          Graphene/Polyaniline Nanofiber Composites as Supercapacitor Electrodes

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            Synthesis of Graphene Oxide using Modified Hummers Method: Solvent Influence

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              Titanium-based metal–organic frameworks for photocatalytic applications

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                Author and article information

                Contributors
                fatih.sen@dpu.edu.tr
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                19 February 2020
                19 February 2020
                2020
                : 10
                : 2946
                Affiliations
                [1 ]ISNI 0000 0004 0595 6407, GRID grid.412109.f, Sen Research Group, Department of Biochemistry, Faculty of Arts and Science, , Dumlupinar University, Evliya Çelebi Campus, ; 43100 Kütahya, Turkey
                [2 ]ISNI 0000 0004 0399 344X, GRID grid.448929.a, Department of Environmental Engineering, Faculty of Engineering, , University of Igdir, ; Igdir, Turkey
                Author information
                http://orcid.org/0000-0001-6750-480X
                http://orcid.org/0000-0002-6938-1898
                http://orcid.org/0000-0001-6843-9026
                Article
                59935
                10.1038/s41598-020-59935-y
                7031288
                32076064
                84811eeb-fb21-4108-a1d0-80b7970375d7
                © The Author(s) 2020

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 30 August 2019
                : 6 February 2020
                Categories
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                © The Author(s) 2020

                Uncategorized
                biocatalysis,electrocatalysis,nanoparticles,electronic properties and devices
                Uncategorized
                biocatalysis, electrocatalysis, nanoparticles, electronic properties and devices

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