Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes
TiO2-reduced graphene oxide composite-modified glassy carbon electrodes (TiO2–ErGO–GCE) for the sensitive detection of tartrazine were prepared by drop casting followed by electrochemical reduction. The as-prepared material was characterized by transmission electron microscopy (TEM) and X-ray diffra...
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MDPI AG
2018-06-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/18/6/1911 |
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| author | Quanguo He Jun Liu Xiaopeng Liu Guangli Li Peihong Deng Jing Liang Dongchu Chen |
| author_facet | Quanguo He Jun Liu Xiaopeng Liu Guangli Li Peihong Deng Jing Liang Dongchu Chen |
| author_sort | Quanguo He |
| collection | DOAJ |
| description | TiO2-reduced graphene oxide composite-modified glassy carbon electrodes (TiO2–ErGO–GCE) for the sensitive detection of tartrazine were prepared by drop casting followed by electrochemical reduction. The as-prepared material was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Cyclic voltammetry and second-order derivative linear scan voltammetry were performed to analyze the electrochemical sensing of tartrazine on different electrodes. The determination conditions (including pH, accumulation potential, and accumulation time) were optimized systematically. The results showed that the TiO2–ErGO composites increased the electrochemical active area of the electrode and enhanced the electrochemical responses to tartrazine significantly. Under the optimum detection conditions, the peak current was found to be linear for tartrazine concentrations in the range of 2.0 × 10−8–2.0 × 10−5 mol/L, with a lower detection limit of 8.0 × 10−9 mol/L (S/N = 3). Finally, the proposed TiO2–ErGO–GCEs were successfully applied for the detection of trace tartrazine in carbonated beverage samples. |
| first_indexed | 2024-04-11T22:11:36Z |
| format | Article |
| id | doaj.art-44aff3647cbe40f8823830eb3c3ce760 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:11:36Z |
| publishDate | 2018-06-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj.art-44aff3647cbe40f8823830eb3c3ce7602022-12-22T04:00:32ZengMDPI AGSensors1424-82202018-06-01186191110.3390/s18061911s18061911Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified ElectrodesQuanguo He0Jun Liu1Xiaopeng Liu2Guangli Li3Peihong Deng4Jing Liang5Dongchu Chen6School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, ChinaSchool of Materials Science and Energy Engineering, Foshan University, Foshan 528000, ChinaDepartment of Chemistry and Material Science, Hengyang Normal University, Hengyang 421008, ChinaSchool of Materials Science and Energy Engineering, Foshan University, Foshan 528000, ChinaDepartment of Chemistry and Material Science, Hengyang Normal University, Hengyang 421008, ChinaDepartment of Chemistry and Material Science, Hengyang Normal University, Hengyang 421008, ChinaSchool of Materials Science and Energy Engineering, Foshan University, Foshan 528000, ChinaTiO2-reduced graphene oxide composite-modified glassy carbon electrodes (TiO2–ErGO–GCE) for the sensitive detection of tartrazine were prepared by drop casting followed by electrochemical reduction. The as-prepared material was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Cyclic voltammetry and second-order derivative linear scan voltammetry were performed to analyze the electrochemical sensing of tartrazine on different electrodes. The determination conditions (including pH, accumulation potential, and accumulation time) were optimized systematically. The results showed that the TiO2–ErGO composites increased the electrochemical active area of the electrode and enhanced the electrochemical responses to tartrazine significantly. Under the optimum detection conditions, the peak current was found to be linear for tartrazine concentrations in the range of 2.0 × 10−8–2.0 × 10−5 mol/L, with a lower detection limit of 8.0 × 10−9 mol/L (S/N = 3). Finally, the proposed TiO2–ErGO–GCEs were successfully applied for the detection of trace tartrazine in carbonated beverage samples.http://www.mdpi.com/1424-8220/18/6/1911titanium dioxidereduced graphene oxidemodified electrodetartrazineelectrocatalysis |
| spellingShingle | Quanguo He Jun Liu Xiaopeng Liu Guangli Li Peihong Deng Jing Liang Dongchu Chen Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes Sensors titanium dioxide reduced graphene oxide modified electrode tartrazine electrocatalysis |
| title | Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes |
| title_full | Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes |
| title_fullStr | Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes |
| title_full_unstemmed | Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes |
| title_short | Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes |
| title_sort | sensitive and selective detection of tartrazine based on tio2 electrochemically reduced graphene oxide composite modified electrodes |
| topic | titanium dioxide reduced graphene oxide modified electrode tartrazine electrocatalysis |
| url | http://www.mdpi.com/1424-8220/18/6/1911 |
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