Polypyrrole functionalized MoS2 for sensitive and simultaneous determination of heavy metal ions in water
Assessing heavy metal ion (HMI) contamination to sustain drinking water hygiene is a challenge. Conventional approaches are appealing for the detection of HMIs but electrochemical approaches can resolve the limitations of these approaches, such as tedious sample preparation, high cost, time consuming and the need for trained professionals. Here, an electrochemical approach is developed using a nano-sphered polypyrrole (PPy) functionalized with MoS2 (PPy/MoS2) by square wave anodic stripping voltammetry for the detection of HMIs. The developed sensor can detect Pb2+ with a limit of detection of 0.03 nM and a sensitivity of 36.42 ?A nM?1. Additionally, the PPy/MoS2 sensor was employed for the simultaneous detection of HMIs of Cd2+, Pb2+, Cu2+ and Hg2+. The reproducibility, stability and anti-interference studies confirm that the sensor can be used to monitor HMI contamination of water. 2025 The Royal Society of Chemistry.
Manjunatha Kumara K.S.; Siddiqa A.; Shiva Kumar P.; Lavanya G.; Budagumpi S.; Hegde G.; Nagaraju D.H.; Usha Rani N.
RSC Advances, Vol-15, No. 1, pp. 467-476.
https://doi.org/10.1039/d4ra05688d https://www.scopus.com/inward/record.uri?eid=2-s2.0-85215387906&doi=10.1039%2fd4ra05688d&partnerID=40&md5=82efd469d65d76490fc22709332faa39
Manjunatha Kumara K.S., Department of Chemistry, School of Applied Sciences, REVA University, Karnataka, Bangalore, 560064, India; Siddiqa A., Department of Chemistry, School of Applied Sciences, REVA University, Karnataka, Bangalore, 560064, India; Shiva Kumar P., Department of Chemistry, School of Applied Sciences, REVA University, Karnataka, Bangalore, 560064, India; Lavanya G., Department of Chemistry, School of Applied Sciences, REVA University, Karnataka, Bangalore, 560064, India; Budagumpi S., Center for Nano and Material Sciences, JAIN (Deemed-to-be-University), Jakkasandra, Karnataka (D), Ramanagar, 562112, India; Hegde G., Centre for Advanced Research and Development (CARD), CHRIST University, Hosur Road, Karnataka, Bangalore, 560029, India; Nagaraju D.H., Department of Chemistry, School of Applied Sciences, REVA University, Karnataka, Bangalore, 560064, India; Usha Rani N., Department of Freshman Engineering, PVP Siddhartha Institute of Technology, Andhra Pradesh, Vijayawada, 520007, India