An electrochemical sensor for nanomolar detection of caffeine based on nicotinic acid hydrazide anchored on graphene oxide (NAHGO)
- Title
- An electrochemical sensor for nanomolar detection of caffeine based on nicotinic acid hydrazide anchored on graphene oxide (NAHGO)
- Creator
- Jose J.; Subramanian V.; Shaji S.; Sreeja P.B.
- Description
- A simple modified sensor was developed with nicotinic acid hydrazide anchored on graphene oxide (NAHGO), by ultrasonic-assisted chemical route, using hydroxy benzotriazole as a mediator. Structural and morphologies of NAHGO samples were investigated in detail by Fourier-Transform Infrared spectroscopy (FT-IR), Powder X-ray diffraction (P-XRD), Raman spectroscopy, Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Thermogravimetric analysis (TGA). The detailed morphological examination and electrochemical studies revealed the delaminated sheet with the tube-like structure of NAHGO provided the route for more electroactive surface which influenced the electrooxidation of caffeine with increased current. The electrochemical behaviour of NAHGO on a glassy carbon electrode (GCE) for caffeine detection was demonstrated by employing voltammetric techniques. The influence of scan rate, pH, and concentration on caffeine's peak current was also studied. The NAHGO sensor was employed for the determination of caffeine in imol plus and energy drinks. The detection limit determined was 8.7 109M, and the best value was reported so far. The results show that NAHGO modified electrodes are one of the best preferences to establish new, efficient, and reliable analytical tools for the detection of caffeine. 2021, The Author(s).
- Source
- Scientific Reports, Vol-11, No. 1
- Date
- 2021-01-01
- Publisher
- Nature Research
- Coverage
- Jose J., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, Karnataka, India; Subramanian V., Department of Industrial Chemistry, Alagappa University, Karaikudi, 630003, Tamil Nadu, India; Shaji S., Facultad de Ingenier Mecica y Eltrica, Universidad Automa de Nuevo Le, San Nicol de los Garza, 66455, Nuevo Le, Mexico; Sreeja P.B., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, Karnataka, India
- Rights
- All Open Access; Gold Open Access; Green Open Access
- Relation
- ISSN: 20452322; PubMed ID: 34083560
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Jose J.; Subramanian V.; Shaji S.; Sreeja P.B., “An electrochemical sensor for nanomolar detection of caffeine based on nicotinic acid hydrazide anchored on graphene oxide (NAHGO),” CHRIST (Deemed To Be University) Institutional Repository, accessed February 26, 2025, https://archives.christuniversity.in/items/show/15569.