Three-dimensional porous reduced graphene oxide decorated with carbon quantum dots and platinum nanoparticles for highly selective determination of azo dye compound tartrazine
FOOD AND CHEMICAL TOXICOLOGY, cilt.158, 2021 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 158
- Basım Tarihi: 2021
- Doi Numarası: 10.1016/j.fct.2021.112698
- Dergi Adı: FOOD AND CHEMICAL TOXICOLOGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, EMBASE, Environment Index, Food Science & Technology Abstracts, MEDLINE, Pollution Abstracts, Veterinary Science Database
- Anahtar Kelimeler: Azo dye, Tartrazine, Carbon quantum dots, Three-dimensional graphene oxide, Screen-printed carbon electrode, Electrochemical sensor, SUNSET YELLOW, LIQUID-CHROMATOGRAPHY, SOFT DRINKS, ELECTROCHEMICAL DETERMINATION, GRAPHITE OXIDE, FOOD SAMPLES, SENSOR, ELECTRODE, REDUCTION, COLORANTS
- Ankara Üniversitesi Adresli: Evet
Özet
In this work, an electrochemical sensor for the azo dye compound tartrazine (TRT) determination was proposed. A screen-printed carbon electrode (SPCE) was modified by depositing three-dimensional porous reduced graphene oxide decorated with carbon quantum dots and platinum nanoparticles (Pt/CQDs@rGO/SPCE). The resulting amount of TRT was observed by differential pulse voltammetry. Under optimal conditions, the sensor exhibited two wide linearities ranging from 0.01 to 1.57 mu M and 1.57-9.3 mu M with the reliability coefficient of determination of 0.991 and 0.992, respectively. The detection limit (LOD) was also estimated to be 7.93 nM. Moreover, the Pt/CQDs@rGO/SPCE suggested high selectivity in the presence of several interfering agents and azo dye compounds that have a similar structure. Additionally, the Pt/CQDs@rGO/SPCE revealed superior recovery values of about 96.5-101.6% for candy, 99.7-103.5% for soft drinks, 96.0-101.2% for jelly powder, and 98.0-103.0% for water samples. Furthermore, the fabricated sensor exhibits excellent selectivity, stability, reproducibility, and repeatability, indicating a great perspective in the monitoring of TRT. Therefore, it can be speculated that the proposed electrode could be effectively applied to determine TRT in food samples.