Abstract
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Schematic representation showing (a) Ag2O·SnO2·TiO2 nanomaterials coated GCE with conducting nafion (5 % ethanol) coating binders, (b) expected I–V response by the Ag2O·SnO2·TiO2 nanomaterials/GCE, (c) observed electrochemical response by the Ag2O·SnO2·TiO2 nanomaterials/GCE, and (d) proposed detection mechanism of TU, while TU is reduced by removing conducting electrons from the Ag2O·SnO2·TiO2 nanomaterials/GCE electrodes.
•Synthesized multifunctional nanomaterial with high dye degradation efficiency.•Ag2O·SnO2·TiO2 /Nafion/GCE sensor assembly determine Thiourea from 0.10 nM to 0.10 M.•Sensitivity and LOD were obtained as 4.2913 μAμM−1 cm−2 and 2.3 ± 0.1 pM (S/N = 3).•Anti-bacterial activity against Gram positive and Gram negative bacteria observed.
A novel multifunctional material with high dye degradation efficiency, photoluminescence (PL) and electro-sensing ability was synthesized with a simple co-precipitation method followed by thermal calcination. The dye degradation efficiency was 98% at pH 9 within only 60 min. The material also showed excellent anti-bacterial activity against both Gram positive and Gram negative bacteria in the presence and absence of light. For the electro-sensor application of Ag2O·SnO2·TiO2, glassy carbon electrode (GCE) was modified by the Ag2O·SnO2·TiO2 nanomaterials at room conditions. The resulting Ag2O·SnO2·TiO2/Nafion/GCE sensor assembly was employed to determine Thiourea (TU) by a simple and reliable electrochemical approach at low-potential. Hazardous TU was selected as the target analyte by the selectivity study. In the investigative study, for the TU concentrations of 0.10 nM to 0.10 M, the calibration plot was found linear (r2 = 0.9997). Calculated sensitivity and limit of detection values were obtained as 4.2913 μAμM−1 cm−2 and 2.3 ± 0.1 pM (S/N = 3) respectively.