Carbon Dot-Laponite Hybrid Nanocomposites as Selective Turn-Off Sensors for Hg2+ Detection and Photoluminescence Quenching Mechanism DOI Creative Commons
Bruno Seiki Domingos Onishi, Albano N. Carneiro Neto, Sidney J. L. Ribeiro

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(52), P. 51204 - 51212

Published: Dec. 17, 2024

Motivated by the importance of Hg2+ detection in water due to its harmful effect on environment and human health, we investigated a recently developed nanocomposite based carbon dots (CDs) LAPONITE as an optical chemical sensor using photoluminescence emission. While several studies have reported CDs' emission, there is lack in-depth investigation into quenching mechanisms involved turn-off sensors. In this study, propose Stern–Volmer analysis at three different temperatures (288, 298, 303 K). The results indicated selectivity for over that other evaluated metal. optimum range was found be 1–40 μM, with limits quantification 2.5 8.3 respectively. Using models, static dominates collisional quenching, possibly complexation between nanocomposite's carboxylate groups Hg2+. Additionally, modified model, which accounts fractional accessibility fluorophores quenchers, suggests some parts are inaccessible quencher.

Language: Английский

Halloysite Nanotubes Functionalized with Naphthalene Diimide and Peptide Nucleic Acid Derivatives: Toward Multifunctional Nanomaterials DOI
Francesca Cardano, Marina Massaro, Federica Leone

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 20, 2025

Language: Английский

Citations

0
A review on halloysite nanotube-biopolymer nanocomposites and their biomedical applications DOI

Amirali Soleimanpour,

Saeed Saber‐Samandari, Majid Abdouss

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: 215, P. 113224 - 113224

Published: June 13, 2024

Language: Английский

Citations

3
Development of alginate film filled with halloysite-carbon dots for active food packaging DOI

Giuseppe Cinà,

Marina Massaro, Giuseppe Cavallaro

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 277, P. 134375 - 134375

Published: July 31, 2024

Language: Английский

Citations

2
Carbon Dot-Laponite Hybrid Nanocomposites as Selective Turn-Off Sensors for Hg2+ Detection and Photoluminescence Quenching Mechanism DOI Creative Commons
Bruno Seiki Domingos Onishi, Albano N. Carneiro Neto, Sidney J. L. Ribeiro

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(52), P. 51204 - 51212

Published: Dec. 17, 2024

Motivated by the importance of Hg2+ detection in water due to its harmful effect on environment and human health, we investigated a recently developed nanocomposite based carbon dots (CDs) LAPONITE as an optical chemical sensor using photoluminescence emission. While several studies have reported CDs' emission, there is lack in-depth investigation into quenching mechanisms involved turn-off sensors. In this study, propose Stern–Volmer analysis at three different temperatures (288, 298, 303 K). The results indicated selectivity for over that other evaluated metal. optimum range was found be 1–40 μM, with limits quantification 2.5 8.3 respectively. Using models, static dominates collisional quenching, possibly complexation between nanocomposite's carboxylate groups Hg2+. Additionally, modified model, which accounts fractional accessibility fluorophores quenchers, suggests some parts are inaccessible quencher.

Language: Английский

Citations

0