TY - JOUR
T1 - Electrochemical sensor for catechol detection
T2 - Leveraging ITO@TiO2/RGO/Pt nanocomposites for enhanced water quality monitoring
AU - Larik, Rimsha
AU - Balouch, Aamna
AU - Alveroğlu Durucu, Esra
AU - Silah, Hulya
AU - Abdullah,
AU - Saqaf Jagirani, Muhammad
AU - Yaqoob soomro, Muhammad
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2025/3
Y1 - 2025/3
N2 - Recent advancements in sensor technology have led to the development of an ITO@TiO2/RGO/Pt nanocomposite-based electrocatalyst for the detection of catechol (1,2-dihydroxybenzene) in water. Catechol is a harmful contaminant affecting human and aquatic life through polluted water and food. The nanocomposites were characterized using UV–Vis, FT-IR, FESEM, EDX, XRD, BET, zeta potential, and particle size analysis to evaluate their functionalities, morphology, composition, and surface properties. ITO glass was modified with these nanocomposites via the drop-casting method. Electrochemical characterization, including cyclic voltammetry and impedance spectroscopy, indicated optimal sensor performance with a scanning rate of 100 mV/s and pH 7 PBS, displaying a strong catechol response. The sensor demonstrated a linear range of 5–105 µM with limits of detection (LOD) and quantification (LOQ) of 0.013 and 0.046 µM, respectively, and recovery rates between 97.1 % and 101.3 % in water samples. It achieved over 7,580 turnovers with a TOF of 97.5 (mol Catalyst)-1·(min)-1, though the TOF decreased to 34.45 after multiple uses.
AB - Recent advancements in sensor technology have led to the development of an ITO@TiO2/RGO/Pt nanocomposite-based electrocatalyst for the detection of catechol (1,2-dihydroxybenzene) in water. Catechol is a harmful contaminant affecting human and aquatic life through polluted water and food. The nanocomposites were characterized using UV–Vis, FT-IR, FESEM, EDX, XRD, BET, zeta potential, and particle size analysis to evaluate their functionalities, morphology, composition, and surface properties. ITO glass was modified with these nanocomposites via the drop-casting method. Electrochemical characterization, including cyclic voltammetry and impedance spectroscopy, indicated optimal sensor performance with a scanning rate of 100 mV/s and pH 7 PBS, displaying a strong catechol response. The sensor demonstrated a linear range of 5–105 µM with limits of detection (LOD) and quantification (LOQ) of 0.013 and 0.046 µM, respectively, and recovery rates between 97.1 % and 101.3 % in water samples. It achieved over 7,580 turnovers with a TOF of 97.5 (mol Catalyst)-1·(min)-1, though the TOF decreased to 34.45 after multiple uses.
KW - Catechol
KW - Electrochemical sensor
KW - Environmental pollution
KW - ITO@TiO2RGO Pt
KW - Reduced Graphene oxide-based Nanocomposites
UR - http://www.scopus.com/inward/record.url?scp=85214119449&partnerID=8YFLogxK
U2 - 10.1016/j.mseb.2024.117966
DO - 10.1016/j.mseb.2024.117966
M3 - Article
AN - SCOPUS:85214119449
SN - 0921-5107
VL - 313
JO - Materials Science and Engineering: B
JF - Materials Science and Engineering: B
M1 - 117966
ER -