Dithioacetal-mechanized mesoporous nanosensor for Hg(II) determination

Sandra Jimenez-Falcao, Anabel Villalonga, Jorge Parra-Nieto, Antoni Llopis-Lorente, Paloma Martinez-Ruiz (Corresponding author), Ramón Martinez-Mañez (Corresponding author), Reynaldo Villalonga (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

This work describes the construction of a novel colorimetric nanosensor for Hg(II), based on mechanized mesoporous silica nanoparticles (MSN). The nanodevice is constructed by grafting new dithiocetal-based stimulus-responsive molecular gates on MSN loaded with a reporter dye. This nanosensor is able to detect Hg(II) in the range of concentrations from 154 pM to 31 nM, with a sensitivity of 29.9 a.u/μM and a detection limit as low as 60 pM. The device also shows high selectivity for Hg(II).

Original languageEnglish
Article number110054
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume297
DOIs
Publication statusPublished - 1 May 2020

Keywords

  • Dithioacetal
  • Mercury
  • Mesoporous nanoparticles
  • Nanosensor

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