Highly Selective and Rapid Naked-Eye Colorimetric Sensing and Fluorescent Studies of Cu2+ Ions Derived from Spherical Nanocellulose
Nanocellulose has emerged as the most promising sustainable nanomaterial to develop cost-effective smart materials for various applications with consequential positive environmental impact. In the present study, we report spherical nanocellulose (SNC) modified with diethylenetriamine (DETA) and/or e...
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Veröffentlicht in: | ACS applied polymer materials 2020-11, Vol.2 (11), p.5290-5299 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Nanocellulose has emerged as the most promising sustainable nanomaterial to develop cost-effective smart materials for various applications with consequential positive environmental impact. In the present study, we report spherical nanocellulose (SNC) modified with diethylenetriamine (DETA) and/or ethanolamine (EA) (SNC-DETA, SNC-EA, and SNC-DETA-EA) as Cu2+ ion sensors. Structure dependence of the sensing properties is the highlight of this work, as SNC-DETA-EA and SNC-DETA showed colorimetric naked-eye and fluorescent activity, with the former showing the same at very low ion concentrations with high selectivity, whereas SNC-EA lacked the same. The solution color changed rapidly to deep blue, and the fluorescence intensity was quenched when the ion concentration increased in the range 0.5–100 ppm, thus facilitating dual-channel ion detection. SNC-DETA-EA showed 1.03 ppm or a 1.622 × 10–5 M limit of detection and high Cu2+ ion uptake with maximum Langmuir capacity (q m) of 212.76 mg/g. |
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ISSN: | 2637-6105 2637-6105 |
DOI: | 10.1021/acsapm.0c01025 |