Unknown

Dataset Information

0

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO2/graphene quantum dot-modified electrode.

ABSTRACT: A TiO2/graphene quantum dots composite (TiO2/GQDs) obtained by in situ synthesis of GQDs, derived from coffee grounds, and peroxo titanium complexes was used as electrode modifier in the simultaneous electrochemical determination of uric acid and hypoxanthine. The TiO2/GQDs material was characterized by photoluminescence, X-ray diffraction, Raman spectroscopy, high-resolution transmission electron microscopy, and energy-dispersive X-ray mapping. The TiO2/GQDs-GCE exhibits better electrochemical activity for uric acid and hypoxanthine than GQDs/GCE or TiO2/GCE in differential pulse voltammetry (DPV) measurements. Under optimized conditions, the calibration plots were linear in the range from 1.00 to 15.26 μM for both uric acid and hypoxanthine. The limits of detection of this method were 0.58 and 0.68 μM for uric acid and hypoxanthine, respectively. The proposed DPV method was employed to determine uric acid and hypoxanthine in urine samples with acceptable recovery rates.

SUBMITTER: Ngoc Hoang V 

PROVIDER: S-EPMC11196949 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO<sub>2</sub>/graphene quantum dot-modified electrode.

Ngoc Hoang Vu V   Hoa Dang Thi Ngoc DTN   Quang Man Nguyen N   Son Le Vu Truong LVT   Son Le Van Thanh LVT   Nguyen Vo Thang VT   Phong Le Thi Hong LTH   Diem Ly Hoang LH   Ly Kieu Chan KC   Thang Ho Sy HS   Quang Khieu Dinh D  

Beilstein journal of nanotechnology 20240620

A TiO<sub>2</sub>/graphene quantum dots composite (TiO<sub>2</sub>/GQDs) obtained by in situ synthesis of GQDs, derived from coffee grounds, and peroxo titanium complexes was used as electrode modifier in the simultaneous electrochemical determination of uric acid and hypoxanthine. The TiO<sub>2</sub>/GQDs material was characterized by photoluminescence, X-ray diffraction, Raman spectroscopy, high-resolution transmission electron microscopy, and energy-dispersive X-ray mapping. The TiO<sub>2</su  ...[more]

Similar Datasets

Unknown Electrochemical determination of ascorbic acid using palladium supported on N-doped graphene quantum dot modified electrode.
| S-EPMC10933321 | biostudies-literature
Unknown Simultaneous Determination of Xanthine and Hypoxanthine Using Polyglycine/rGO-Modified Glassy Carbon Electrode.
| S-EPMC9922001 | biostudies-literature
Unknown Structurally engineered colloidal quantum dot phosphor using TiO<sub>2</sub> photonic crystal backbone.
| S-EPMC9626542 | biostudies-literature
Unknown C-Dot TiO<sub>2</sub> nanorod composite for enhanced quantum efficiency under direct sunlight.
| S-EPMC9054048 | biostudies-literature
Unknown Interfacial Engineering at Quantum Dot-Sensitized TiO<sub>2</sub> Photoelectrodes for Ultrahigh Photocurrent Generation.
| S-EPMC8576758 | biostudies-literature
Unknown Solar Paint from TiO<sub>2</sub> Particles Supported Quantum Dots for Photoanodes in Quantum Dot-Sensitized Solar Cells.
| S-EPMC6641499 | biostudies-literature
Unknown Electrochemical determination of T<sub>2</sub> toxin by graphite/polyacrylonitrile nanofiber electrode.
| S-EPMC7866594 | biostudies-literature
Unknown Carbon Quantum Dot-Modified Carbon Paste Electrode-Based Sensor for Selective and Sensitive Determination of Adrenaline.
| S-EPMC6648597 | biostudies-literature
Unknown Electrochemical properties of TiO <sub><i>x</i></sub> /rGO composite as an electrode for supercapacitors.
| S-EPMC9070778 | biostudies-literature
Unknown Theoretical prediction and design for chalcogenide-quantum-dot/TiO<sub>2</sub> heterojunctions for solar cell applications.
| S-EPMC9557743 | biostudies-literature