{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T13:25:44Z","timestamp":1783949144180,"version":"3.55.0"},"reference-count":48,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2018,8,24]],"date-time":"2018-08-24T00:00:00Z","timestamp":1535068800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61703152"],"award-info":[{"award-number":["61703152"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004735","name":"Natural Science Foundation of\u00a0Hunan Province","doi-asserted-by":"publisher","award":["2016JJ4010, 2018JJ3134"],"award-info":[{"award-number":["2016JJ4010, 2018JJ3134"]}],"id":[{"id":"10.13039\/501100004735","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002767","name":"Hunan Provincial Science and Technology Department","doi-asserted-by":"publisher","award":["GD16K02"],"award-info":[{"award-number":["GD16K02"]}],"id":[{"id":"10.13039\/501100002767","id-type":"DOI","asserted-by":"publisher"}]},{"name":"The key Project of Department of Education of Guangdong Province","award":["2016GCZX008"],"award-info":[{"award-number":["2016GCZX008"]}]},{"name":"Project of Science and Technology Plan in Zhuzhou","award":["201706-201806"],"award-info":[{"award-number":["201706-201806"]}]},{"name":"Opening Project of Key Discipline of Materials Science in Guangdong","award":["CNXY2017001, CNXY2017002 and CNXY2017003"],"award-info":[{"award-number":["CNXY2017001, CNXY2017002 and CNXY2017003"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Control and detection of sunset yellow is an utmost demanding issue, due to the presence of potential risks for human health if excessively consumed or added. Herein, cuprous oxide-electrochemically reduced graphene nanocomposite modified glassy carbon electrode (Cu2O-ErGO\/GCE) was developed for the determination of sunset yellow. The Cu2O-ErGO\/GCE was fabricated by drop-casting Cu2O-GO dispersion on the GCE surface following a potentiostatic reduction of graphene oxide (GO). Scanning electron microscope and X-ray powder diffractometer was used to characterize the morphology and microstructure of the modification materials, such as Cu2O nanoparticles and Cu2O-ErGO nanocomposites. The electrochemical behavior of sunset yellow on the bare GCE, ErGO\/GCE, and Cu2O-ErGO\/GCE were investigated by cyclic voltammetry and second-derivative linear sweep voltammetry, respectively. The analytical parameters (including pH value, sweep rate, and accumulation parameters) were explored systematically. The results show that the anodic peak currents of Cu2O-ErGO \/GCE are 25-fold higher than that of the bare GCE, due to the synergistic enhancement effect between Cu2O nanoparticles and ErGO sheets. Under the optimum detection conditions, the anodic peak currents are well linear to the concentrations of sunset yellow, ranging from 2.0 \u00d7 10\u22128 mol\/L to 2.0 \u00d7 10\u22125 mol\/L and from 2.0 \u00d7 10\u22125 mol\/L to 1.0 \u00d7 10\u22124 mol\/L with a low limit of detection (S\/N = 3, 6.0 \u00d7 10\u22129 mol\/L). Moreover, Cu2O-ErGO\/GCE was successfully used for the determination of sunset yellow in beverages and food with good recovery. This proposed Cu2O-ErGO\/GCE has an attractive prospect applications on the determination of sunset yellow in diverse real samples.<\/jats:p>","DOI":"10.3390\/molecules23092130","type":"journal-article","created":{"date-parts":[[2018,8,24]],"date-time":"2018-08-24T11:13:45Z","timestamp":1535109225000},"page":"2130","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":69,"title":["Novel Electrochemical Sensors Based on Cuprous Oxide-Electrochemically Reduced Graphene Oxide Nanocomposites Modified Electrode toward Sensitive Detection of Sunset Yellow"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9849-7953","authenticated-orcid":false,"given":"Quanguo","family":"He","sequence":"first","affiliation":[{"name":"School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China"},{"name":"College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China"},{"name":"College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaopeng","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yonghui","family":"Xia","sequence":"additional","affiliation":[{"name":"Zhuzhou Institute for Food and Drug Control, Zhuzhou 412000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guangli","family":"Li","sequence":"additional","affiliation":[{"name":"School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China"},{"name":"College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peihong","family":"Deng","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Material Science, Hengyang Normal University, Hengyang 421008, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dongchu","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2018,8,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"432","DOI":"10.1016\/j.talanta.2008.11.035","article-title":"Simultaneous kinetic spectrophotometric analysis of five synthetic food colorants with the aid of chemometrics","volume":"78","author":"Ni","year":"2009","journal-title":"Talanta"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1016\/j.foodchem.2009.04.097","article-title":"Determination of three dyes in commercial soft drinks using HLA\/GO and liquid chromatography","volume":"117","year":"2009","journal-title":"Food Chem."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"759","DOI":"10.1016\/j.snb.2014.07.024","article-title":"A novel and green ctab-functionalized graphene nanosheets electrochemical sensor for Sudan I determination","volume":"203","author":"Mao","year":"2014","journal-title":"Sens. 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