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Mesoporous silica based recyclable probe for colorimetric detection and separation of ppb level Hg²⁺ from aqueous medium.

ABSTRACT: Functional mesoporous silica probes, MCM-TFM and SBA-TFM, have been synthesized with varying pore sizes and having S-donor sites judiciously selected to bind soft metal centers. The soft S-donor centers are contributed by the thiol functional groups that are introduced into the silica matrices by functionalization with tris(4-formylphenyl)amine followed by 2-aminothiophenol. The materials rapidly and selectively detect Hg²⁺ colorimetrically and the change in color profile can be perceived through bare eyes. The probes can decontaminate the pollutant heavy metal from aqueous medium at ppb level and the materials are recyclable and reusable for several separation cycles.

SUBMITTER: Das T

PROVIDER: S-EPMC6920407 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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Mesoporous silica based recyclable probe for colorimetric detection and separation of ppb level Hg2+ from aqueous medium.

Das Trisha T Singha Debdas D Pal Ananya A Nandi Mahasweta M

Scientific reports 20191218 1

Functional mesoporous silica probes, MCM-TFM and SBA-TFM, have been synthesized with varying pore sizes and having S-donor sites judiciously selected to bind soft metal centers. The soft S-donor centers are contributed by the thiol functional groups that are introduced into the silica matrices by functionalization with tris(4-formylphenyl)amine followed by 2-aminothiophenol. The materials rapidly and selectively detect Hg2+ colorimetrically and the change in color profile can be perce ...[more]

PMID: 31852977

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