Fabrication of a 3,4‐Diaminotoluene Sensor Based on a TiO₂ ‐Al₂O₃Nanocomposite Synthesized by a Fast and Facile Microwave Irradiation Method

Abstract

A fast and facile synthesis of TiO2‐ Al2O3 nanocomposite based on Microwave (MW) irradiation is presented. The nanocomposite development were corroborated by X‐ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), energy‐dispersive X‐ray (EDX),and Fourier transform infrared spectroscopy (FT‐IR)analysis. The XPS analyzed results affirmed that elements on the nanocomposite surface were Al and O. Electrochemical properties of the as prepared TiO2‐Al2O3 nanocomposites were studied thoroughly to determine the sensing activity of the nanocomposites towards 3,4‐Diaminotoluene (3,4‐DAT) which is a harmful or hazardous chemical using I−V method. Selective electrochemical sensor using TiO2‐Al2O3 nanocomposite onto glassy carbon electrode (GCE) was assembled and the details electrochemical investigation of 3,4‐Diaminotoluene (3,4‐DAT) was developed. It was calibrated using in range of 3,4‐DAT concentration and data were plotted as current versus concentration. Considering the highest linearity (r2=0.99)of calibrated range, the linear dynamic range (1.0 pM∼ 1.0 μM) was found. Employing the slope of calibration curve, the sensitivity (0.5024×103 μAμM−1cm−3) and detection limit (0.19 ± 0.01 pM) were estimated. Besides this, the selective 3,4‐DAT chemical sensor was shown long‐term stability and precious reproducibility with very short response time without any interference effect.

An Alternative Electrochemical Approach to Detect 4-Nitrophenylhydrazine With ZnO/SnO2 Nanoparticles Decorated Glassy Carbon Electrode

“…Thus, the use of Na on on the modi ed GCE improves the conductance and the electron transfer rate of the resultant sensor. The similar characteristic of the sensor assembled using Na on has reported in several articles to detect toxic chemicals [47][48][49][50][51] The toxic chemicals in analytical grade such as benzaldehyde, 4-AP, 4-NPHyd, 2,4-DPDHCl, 3-CP, 3-MP, M-THydHCl, zimtaldehyde, 4-MP and 3-MPHydHCl were subjected to I-V investigation by assembled sensor based on ZnO/SnO2 NPs/GCE at rst illustrated in Fig. 3(a).…”

A reliable electrochemical sensor developed based on ZnO/SnO₂ nanoparticles modified glassy carbon electrode

“…Thus, the use of Nafion on the modified GCE improves the conductance and the electron transfer rate of the resultant sensor. The similar characteristic of the sensor assembled using Nafion has reported in several articles to detect toxic chemicals [47][48][49][50][51]. The wet-chemically prepared ZnO/SnO2 NPs on GCE as an electrochemical sensor to selective detection of 4-NPHyd is new and the information regarding its not available.…”

Diverse biotechnological applications of multifunctional titanium dioxide nanoparticles: An up‐to‐date review

“…Based on this, TiO 2 NP‐based nanosensors have been profoundly examined and employed for the detection of ions and substances [ 104 , 105 ]. Henceforth, nowadays tremendous interest has been observed in TiO 2 nanomaterial structures as well as their transduction principles and simulations for nanosensor applications [ 106 , 107 , 108 , 109 , 110 ]. In recent times, several new TiO 2 ‐based nanomaterials with advanced compositions and structures have been employed for a variety of sensors.…”