Enhanced electrochemical ascorbic acid sensing via synergistic TiO2 nanoparticle and molecularly imprinted polymer modified carbon paste electrodes
Source abstract
Abstract
An electrochemical sensor for ascorbic acid (AA) was developed using a carbon paste electrode (CPE) modified with titanium dioxide (TiO 2 ) nanoparticles and molecularly imprinted polymer (MIP) based on methyl red. Surface deposition of TiO 2 , followed by MIP modification, increased the oxidation peak current by 30.8 %. The sensor exhibited four linear response ranges (1–10 μM, 10–100 μM, 100–1000 μM, and 1–10 mM), with a detection limit of 0.7 μM. It also demonstrated excellent repeatability (RSD = 2.68 %) and reproducibility (RSD = 2.25 %). The structural and compositional integration of TiO 2 and MIP was confirmed through scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and Brunauer-Emmett-Teller (BET) analysis. These results support its use in clinical and food safety AA detection.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrochemical sensors and biosensors · Electrochemical Analysis and Applications · Analytical Chemistry and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (16)
Show source-provided references
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