Barium titanate nanoparticle-based disposable sensor for nanomolar level detection of the haematotoxic pollutant quinol in aquatic systems. (26th January 2022)

• Record Type: Journal Article
• Authors: Arumugam, Balamurugan; Nagarajan, Vimalasundari; Annaraj, Jamespandi; Ramaraj, Sayee Kannan
• Is Part Of: New journal of chemistry. Volume 46:Number 6(2022)
• Page Start: 3006
• Page End: 3016
• Publication Date: 2022-01-26
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d1nj04807d
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Barium titanate nanoparticles synthesized by a simple co-precipitation method and applied for the electrochemical detection of quinol. Abstract : The deteriorating quality of water owing to the existence of toxic chemicals in ecological water sources due to industrial effluents has become a cause for concern these days. An electrocatalytic device was fabricated for the detection of the haematotoxic pollutant quinol (QL) using barium titanate nanoparticles (BaTiO3 NPs). A sustainable co-precipitation method was employed to synthesize the BaTiO3 NPs. Then, their physical characteristics were confirmed using techniques such as X-ray diffraction to elucidate their crystalline nature, scanning electron microscopy and high resolution transmission electron microscopy to study their surface morphology, and energy dispersive X-ray spectroscopy to analyze their elemental composition. The prepared BaTiO3 NPs were applied over a disposable screen-printed electrode and used for the determination of QL with a wide dynamic response range (0.001–340 μM), low detection limit (0.009 μM) and excellent sensitivity (1.19 μA μM −1 cm −2 ). The superior electrical conductivity of the BaTiO3 NPs/SPCE is associated with a low s -value and high number of non-bridging oxygen ions present in the nanoparticle structure. The proposed sensor displays excellent selectivity, reproducibility and storage stability as a QL sensor. Additionally, the superior sensing performance of the BaTiO3 NPs was effectively applied in water samples, with acceptable recovery values towards hazardous environmental pollutants.