Abstract
Here, it was successfully synthesized cadmium sulphide nanoparticles decorated carbon nanotube film as a nanocomposite materials with an average diameter of similar to 16.35 nm; CdS-CNT NCs by a facile solution method in basic phase. As-grown CdS-CNT NCs film was characterized in details by FE-SEM, TEM, EDS, XPS, XRD, and FTIR spectroscopy. Glassy carbon electrode (GCE) was modified by CdS-CNT NCs and CdS-CNT NCs/Nafion/GCE assembly was employed to determine lethal Benzaldehyde (BZ) by simple electrochemical approach. Carcinogenic BZ was nominated as a target pollutant by the selectivity investigation, where BZ shows differential pulse voltammetric electrochemical response towards the CdS-CNT NCs/Nafion/GCE electrode probe. It also showed a superb sensitivity as well as ultra-low limit of detection (LOD). In the investigative study, for BZ concentration of 0.1 nM-1.0 mM, the calibration plot was found linear (r(2) = 0.9992), where calculated sensitivity and LOD values were obtained as 5.43 mu A mu M(-1)cm(-2) and 2.2 + 0.1 pM (S/N = 3) respectively. This report also includes the potential validation of CdS-CNT NCs/Nafion/GCE electrode probe as a selective chemical sensor for BZ. In this approach, CdS-CNT composite was used to fabricate the highly sensitive as well as selective benzaldehyde chemical sensor probe with lowest detection limit by electrochemical technique for the safety of environmental and healthcare fields in broad scale.