A highly sensitive and selective thiosemicarbazone chemosensor for detection of Co2+ in aqueous environments using RSM and TD/DFT approaches
Chemosensor using organic based compound offering superior alternative method in recognizing metal ion in environmental water. The optimization process strongly affected the performance of the designed sensor. In this study, a highly sensitive and selective colorimetric sensor system utilizing an...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | en en en |
| Published: |
Springer Nature
2021
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/93334/7/93334_A%20highly%20sensitive%20and%20selective%20thiosemicarbazone.pdf http://irep.iium.edu.my/93334/13/93334_A%20highly%20sensitive%20and%20selective%20thiosemicarbazone.pdf http://irep.iium.edu.my/93334/19/93334_A%20highly%20sensitive%20and%20selective%20thiosemicarbazone%20chemosensor_Scopus.pdf http://irep.iium.edu.my/93334/ https://www.nature.com/articles/s41598-021-00264-z.pdf |
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| Summary: | Chemosensor using organic based compound offering superior alternative method in recognizing
metal ion in environmental water. The optimization process strongly affected the performance
of the designed sensor. In this study, a highly sensitive and selective colorimetric sensor system
utilizing an organic compound, namely thiosemicarbazone-linked acetylpyrazine (TLA), to recognize
Co2+ ions in different environmental water samples was successfully developed using the response
surface methodology (RSM) approach. The developed model was optimized successfully and had
statistically significant independent variables (p < 0.05), with optimum recognition occurring in 8:2
v/v DMSO/water at a pH of 5.3, a 100:70 μM TLA/Co2+ concentration, and 15 min of reaction time.
Under optimum conditions, the TLA sensor recognized Co2+ ions at concentrations as low as 1.637 μM,
which is lower than the detection limit of flame atomic absorption spectroscopy (FAAS). Theoretical
approaches supported the experimental data as well as characterized and predicted the mechanistic
non-covalent interactions of TLA-Co2+ within the chemosensing system. Finally, all the positive results
produced in this study point to TLA as an alternative and comparable probe for recognizing Co2+
pollution in water that is cost effective, movable and easy-to-handle, requires no special training and
ecofriendly. |
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