Recent advances in designable nanomaterial-based electrochemical sensors for environmental heavy-metal detection

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Schematic of functional materials for electrochemical sensors, showcasing MWCNTs, CNFs, GO, Pd, Pt, Ni, Fe, Co, COFs, MOFs detecting heavy metal ions (Pb, Cd, Hg, Cu, Cr, As) in complex environments with high sensitivity and reliability.

Language: Английский

MOF-Derived N-Doped Carbon Nanotube-Confined Ni Nanoparticles for the Simultaneous Electrochemical Detection of Cu²⁺ and Hg²⁺ with High Sensitivity and Stability

Molecules, Journal Year: 2025, Volume and Issue: 30(5), P. 1078 - 1078

Published: Feb. 26, 2025

Heavy metal pollution has posed a serious threat to the ecological environment and human health. Thus, development of accurate effective methods for their detection is crucial. In this study, novel electrochemical sensor was fabricated detect Cu2+ Hg2+, based on N-doped carbon nanotube-wrapped Ni nanoparticle (Ni@N-CNT) sensing material, which derived from pyrolysis Ni2+ doped ZIF-8. For electrode material design, packaging structure not only protected encapsulated nanoparticles corrosion in acid electrolyte but also provided excellent electro-catalytic activity electrical conductivity by controlling size. Thanks overall performance Ni@N-CNT composite, proposed exhibited analytical Hg2+ detection, with ultra-low limits 33.3 ng⋅L-1 ng⋅L-1, respectively. The demonstrated good repeatability, reproducibility selectivity. addition, method successfully applied analysis actual Chinese cabbage samples satisfactory recovery, confirming its practical applicability.

Language: Английский

Experimental and DFT studies of mercury adsorption and oxidation on CuCo2O4(110) surface

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 54, P. 105242 - 105242

Published: Oct. 9, 2024

Language: Английский