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Cellulose-based fluorescent sensor for visual and versatile detection of amines and anions.
- Source :
-
Journal of hazardous materials [J Hazard Mater] 2020 Apr 05; Vol. 387, pp. 121719. Date of Electronic Publication: 2019 Nov 19. - Publication Year :
- 2020
-
Abstract
- It is practical and challenging to construct ultrasensitive and multi-responsive sensors for visual and real-time monitoring of the environment. Herein, a cellulose-based multi-responsive fluorescent sensor (Phen-MDI-CA) is fabricated, and realizes a visual and ultrasensitive detection of not only various amines but also three anions based on the change of the fluorescence and/or visible colors. Once exposure to various amines in both the solution and vapor state, the Phen-MDI-CA solution and test paper exhibit different fluorescence colors, which can be used to distinguish triethylamine, ethylenediamine, methylamine, aniline, hydrazine and pyrrolidine from other amines. Moreover, via combining the Phen-MDI-CA with the Phen-MDI-CA/malachite green ratiometric system, phosphate (PO <subscript>4</subscript> <superscript>3-</superscript> ), carbonate (CO <subscript>3</subscript> <superscript>2-</superscript> ) and borate (B <subscript>4</subscript> O <subscript>7</subscript> <superscript>2-</superscript> ) can be visually and accurately recognized depending on the change of the visible and fluorescence colors. In fluorescent mode, the LOD for B <subscript>4</subscript> O <subscript>7</subscript> <superscript>2-</superscript> , PO <subscript>4</subscript> <superscript>3-</superscript> and CO <subscript>3</subscript> <superscript>2-</superscript> ions is as low as 0.18 nmol, 0.69 nmol and 0.86 nmol, respectively. Significantly, the Phen-MDI-CA can readily make a qualitative and quantitative detection of B <subscript>4</subscript> O <subscript>7</subscript> <superscript>2-</superscript> , PO <subscript>4</subscript> <superscript>3-</superscript> and CO <subscript>3</subscript> <superscript>2-</superscript> anions in the mixture of anions. The state-of-the-art responsive behavior of Phen-MDI-CA originates from the amplification effect of cellulose polymer chain and the differentiated interactions between the sensor and analytes.<br /> (Copyright © 2019 Elsevier B.V. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-3336
- Volume :
- 387
- Database :
- MEDLINE
- Journal :
- Journal of hazardous materials
- Publication Type :
- Academic Journal
- Accession number :
- 31780292
- Full Text :
- https://doi.org/10.1016/j.jhazmat.2019.121719