Screen-Printed Electrode-Based Sensing of l-Ascorbic Acid Using Metal–Organic Framework Supported Carbon–Palladium-Doped MXene Quantum Dots in Human Serum and Artificial Sweat

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(22), С. 26032 - 26043

Опубликована: Ноя. 12, 2024

Carbon-doped MXene quantum dots (MNQDs) were synthesized through a hydrothermal reaction involving citric acid and ethylene diamine in the presence of MXene. Palladium nanoparticles subsequently incorporated into MNQDs integrated an iron-based metal–organic framework, forming MIL-PdMNQDs. The successful synthesis MIL-PdMNQDs was confirmed by PXRD, SEM, TEM, XPS, FTIR analyses. Modified glassy carbon screen-printed electrodes with used to measure l-ascorbic concentrations phosphate buffer solution, ranging from 10 100 nM. Cyclic voltammetry (CV) differential pulse (DPV) revealed linear anodic peak current between 52.05 82.44 μA, regression (R2) value 0.9885. In human serum diluted PBS (5 mL 95 PBS), MIL-PdMNQDs-SPE1 detected ascorbic 50 μM, illustrating DPV redox 124.39 152.54 R2 0.9901. Additionally, artificial sweat, sensor 1000 readings 11.132 64.83 μA 0.9903, demonstrating its selective sensing capability. limit detection (LOD) for using MIL-PdMNQDs-GCE determined be 4.705 SPE sensors exhibited high stability exceptional selectivity detection.

Язык: Английский

2D-MXene: Progress in Synthesis, Intercalation, and Applications in Microfluidic Sensors

Surfaces and Interfaces, Год журнала: 2024, Номер unknown, С. 105678 - 105678

Опубликована: Дек. 1, 2024

Язык: Английский