Biosynthesis of titanium oxide-aluminium oxide nanocomposites for electrocatalytic detection of 2,4,6-trichlorophenol

• Published in: Materials today communications 2024-03, Vol.38, p.108137, Article 108137
• Main Authors: Akhtar, Khalil, Baig, Jameel Ahmed, Solangi, Imam Bakhsh, Afridi, Hassan Imran, Khalid, Awais, Solangi, Shakoor Ahmed, Perveen, Saima, Bhanbhro, Preh, Hussain, Sajjad
• Format: Article
• Language: English
• Subjects: Analytical characterization; Biosynthesis; Electrochemical sensors; TiO2.Al2O3-NCs; Trichlorophenol
• ISSN: 2352-4928; 2352-4928
• DOI: 10.1016/j.mtcomm.2024.108137

Chlorophenols are a widespread class of chemical compounds with multiple applications across various industries. Trichlorophenol (TCP) is an organochlorine compound widely utilized as an antifungal, antiseptic agent, antimicrobial, insecticide, and pesticide. This study presents a novel approach to electrochemically detect TCP using a newly developed titanium oxide-aluminum oxide nanocomposite-modified glassy carbon electrode (TiO2. Al2O3-NCs/GCE). TiO2. Al2O3-NCs were synthesized through the co-precipitation method using fagonia plant extract, followed by the fabrication of TiO2. Al2O3-NCs/GCE by drop casting approach. The TiO2. Al2O3-NCs exhibited a cubic crystalline phase with a rough surface, while their particle size was less than 40 nm and had an average zeta potential value of 7.23 mV. The TiO2. Al2O3-NCs/GCE was applied for the quantitative detection of TCP by differential pulse voltammetry (DPV). The results demonstrated excellent accuracy and selectivity of the fabricated sensor for trace-level detection of TCP with a detection limit of 1.85 × 10−9 M. The TiO2. Al2O3-NCs/GCE-based developed electrochemical method was successfully applied for detecting TCP from water and pharmaceutical samples with excellent recoveries (> 90%). [Display omitted]