An electrochemical sensor based on a Co3O4–ERGO nanocomposite modified screen-printed electrode for detection of uric acid in artificial saliva
In this study, we report the fabrication of a nanocomposite consisting of Co3O4 nanoparticles (Co3O4 NPs) and electrochemically reduced graphene oxide (ERGO) on a screen-printed electrode (SPE) and its sensing performance in the electrochemical detection of uric acid (UA). The surface modification o...
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| Veröffentlicht in: | Analytical methods 2022-01, Vol.14 (1), p.67-75 |
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| creator | Turkkan, Gizem Bas, Salih Zeki Atacan, Keziban Ozmen, Mustafa |
| description | In this study, we report the fabrication of a nanocomposite consisting of Co3O4 nanoparticles (Co3O4 NPs) and electrochemically reduced graphene oxide (ERGO) on a screen-printed electrode (SPE) and its sensing performance in the electrochemical detection of uric acid (UA). The surface modification of the electrode was confirmed by using a variety of characterization techniques (FE-SEM, XRD, AFM, EDX, WCA, FTIR, and Raman spectroscopy). In addition, the surface modification was electrochemically characterized step by step through CV, EIS and DPV techniques, and the results showed that the Co3O4–ERGO nanocomposite exhibited highly sensitive and selective sensing performance towards the oxidation of UA in 0.1 M (pH 7.0) phosphate buffer solution (PBS). The sensor (Co3O4–ERGO/SPE) signals were observed to be linear to the UA concentration in the range of 5 μM to 500 μM (R2 = 0.9985). After revealing its other performance characteristics, such as repeatability, reproducibility, stability, sensitivity, and selectivity, the sensor was successfully applied to the analysis of UA in artificial saliva samples. |
| doi_str_mv | 10.1039/d1ay01744f |
| format | Article |
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The surface modification of the electrode was confirmed by using a variety of characterization techniques (FE-SEM, XRD, AFM, EDX, WCA, FTIR, and Raman spectroscopy). In addition, the surface modification was electrochemically characterized step by step through CV, EIS and DPV techniques, and the results showed that the Co3O4–ERGO nanocomposite exhibited highly sensitive and selective sensing performance towards the oxidation of UA in 0.1 M (pH 7.0) phosphate buffer solution (PBS). The sensor (Co3O4–ERGO/SPE) signals were observed to be linear to the UA concentration in the range of 5 μM to 500 μM (R2 = 0.9985). 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The surface modification of the electrode was confirmed by using a variety of characterization techniques (FE-SEM, XRD, AFM, EDX, WCA, FTIR, and Raman spectroscopy). In addition, the surface modification was electrochemically characterized step by step through CV, EIS and DPV techniques, and the results showed that the Co3O4–ERGO nanocomposite exhibited highly sensitive and selective sensing performance towards the oxidation of UA in 0.1 M (pH 7.0) phosphate buffer solution (PBS). The sensor (Co3O4–ERGO/SPE) signals were observed to be linear to the UA concentration in the range of 5 μM to 500 μM (R2 = 0.9985). After revealing its other performance characteristics, such as repeatability, reproducibility, stability, sensitivity, and selectivity, the sensor was successfully applied to the analysis of UA in artificial saliva samples.</description><subject>Buffer solutions</subject><subject>Chemical sensors</subject><subject>Cobalt oxides</subject><subject>Electrochemical analysis</subject><subject>Electrochemistry</subject><subject>Electrodes</subject><subject>Fabrication</subject><subject>Graphene</subject><subject>Nanocomposites</subject><subject>Nanoparticles</subject><subject>Oxidation</subject><subject>Raman spectroscopy</subject><subject>Reproducibility</subject><subject>Saliva</subject><subject>Selectivity</subject><subject>Sensors</subject><subject>Stability analysis</subject><subject>Uric acid</subject><issn>1759-9660</issn><issn>1759-9679</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNpdjsFKAzEQhoMoWKsXnyDgxctqstkkzbGUWoVCQXov2WQWU3aTNdkVvPkK4hv6JKZYPHia-eGbb36Erim5o4Spe0v1O6GyqpoTNKGSq0IJqU7_dkHO0UVKe0KEYoJO0OfcY2jBDDGYF-ic0S1O4FOIuNYJLA4ea7wIbFN9f3wtn1cb7LUPJnR9SG4A3AXrGpfBZCKAL_ro_JDjUWoBN9llYcjRZVlo8Bidwdo4i12WxyHfG3f4q1v3pi_RWaPbBFfHOUXbh-V28VisN6unxXxd9CUVQyFKw4BJU9Kal7TiM62kmHEqaWONtBUnNTFlbWFmKsUUEE5kxRkRjWRKGDZFt7_aPobXEdKw61wy0LbaQxjTrhSUkBmlnGf05h-6D2P0udyBYlQJzin7AYFodY4</recordid><startdate>20220107</startdate><enddate>20220107</enddate><creator>Turkkan, Gizem</creator><creator>Bas, Salih Zeki</creator><creator>Atacan, Keziban</creator><creator>Ozmen, Mustafa</creator><general>Royal Society of Chemistry</general><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SE</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>H8G</scope><scope>JG9</scope><scope>L7M</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>20220107</creationdate><title>An electrochemical sensor based on a Co3O4–ERGO nanocomposite modified screen-printed electrode for detection of uric acid in artificial saliva</title><author>Turkkan, Gizem ; Bas, Salih Zeki ; Atacan, Keziban ; Ozmen, Mustafa</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p216t-62c3e37c21b521458a97685171fdc7d450b0c2bde8c4939e050745306f7396c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Buffer solutions</topic><topic>Chemical sensors</topic><topic>Cobalt oxides</topic><topic>Electrochemical analysis</topic><topic>Electrochemistry</topic><topic>Electrodes</topic><topic>Fabrication</topic><topic>Graphene</topic><topic>Nanocomposites</topic><topic>Nanoparticles</topic><topic>Oxidation</topic><topic>Raman spectroscopy</topic><topic>Reproducibility</topic><topic>Saliva</topic><topic>Selectivity</topic><topic>Sensors</topic><topic>Stability analysis</topic><topic>Uric acid</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Turkkan, Gizem</creatorcontrib><creatorcontrib>Bas, Salih Zeki</creatorcontrib><creatorcontrib>Atacan, Keziban</creatorcontrib><creatorcontrib>Ozmen, Mustafa</creatorcontrib><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Analytical methods</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Turkkan, Gizem</au><au>Bas, Salih Zeki</au><au>Atacan, Keziban</au><au>Ozmen, Mustafa</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An electrochemical sensor based on a Co3O4–ERGO nanocomposite modified screen-printed electrode for detection of uric acid in artificial saliva</atitle><jtitle>Analytical methods</jtitle><date>2022-01-07</date><risdate>2022</risdate><volume>14</volume><issue>1</issue><spage>67</spage><epage>75</epage><pages>67-75</pages><issn>1759-9660</issn><eissn>1759-9679</eissn><abstract>In this study, we report the fabrication of a nanocomposite consisting of Co3O4 nanoparticles (Co3O4 NPs) and electrochemically reduced graphene oxide (ERGO) on a screen-printed electrode (SPE) and its sensing performance in the electrochemical detection of uric acid (UA). The surface modification of the electrode was confirmed by using a variety of characterization techniques (FE-SEM, XRD, AFM, EDX, WCA, FTIR, and Raman spectroscopy). In addition, the surface modification was electrochemically characterized step by step through CV, EIS and DPV techniques, and the results showed that the Co3O4–ERGO nanocomposite exhibited highly sensitive and selective sensing performance towards the oxidation of UA in 0.1 M (pH 7.0) phosphate buffer solution (PBS). The sensor (Co3O4–ERGO/SPE) signals were observed to be linear to the UA concentration in the range of 5 μM to 500 μM (R2 = 0.9985). After revealing its other performance characteristics, such as repeatability, reproducibility, stability, sensitivity, and selectivity, the sensor was successfully applied to the analysis of UA in artificial saliva samples.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/d1ay01744f</doi><tpages>9</tpages></addata></record> |
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| ispartof | Analytical methods, 2022-01, Vol.14 (1), p.67-75 |
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| language | eng |
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| source | Royal Society Of Chemistry Journals 2008- |
| subjects | Buffer solutions Chemical sensors Cobalt oxides Electrochemical analysis Electrochemistry Electrodes Fabrication Graphene Nanocomposites Nanoparticles Oxidation Raman spectroscopy Reproducibility Saliva Selectivity Sensors Stability analysis Uric acid |
| title | An electrochemical sensor based on a Co3O4–ERGO nanocomposite modified screen-printed electrode for detection of uric acid in artificial saliva |
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