Journal article
A flower-like ZnO-Ag2O nanocomposite for label and mediator free direct sensing of dinitrotoluene
Publication Details
Authors: | Chakraborty, U.; Bhanjana, G.; Adam, J.; Mishra, Y.; Kaur, G.; Chaudhary, G.; Kaushik, A. |
Publisher: | ROYAL SOC CHEMISTRY |
Publication year: | 2020 |
Journal: | RSC Advances |
Pages range : | 27764-27774 |
Volume number: | 10 |
Issue number: | 46 |
Start page: | 27764 |
End page: | 27774 |
Number of pages: | 11 |
ISSN: | 2046-2069 |
eISSN: | 2046-2069 |
DOI-Link der Erstveröffentlichung: |
URN / URL: |
Abstract
2,4-Dinitrotoluene (2,4-DNT) is a nitro aromatic compound used as a raw material for trinitrotoluene (TNT) explosive synthesis along with several other industrial applications. Easy, rapid, cost-effective, and selective detection of 2,4-DNT is becoming essential due to its hepato carcinogenic nature and presence in surface as well as ground water as a contaminant. Keeping this in view, this research, for the first-time, reports the synthesis of novel ZnO-Ag2O composite nanoflowers on a gold (Au) substrate, to fabricate an electrochemical sensor for label-free, direct sensing of 2,4-DNT selectively. The proposed ZnO-Ag2O/Au sensor exhibits a sensitivity of 5 mu A mu M(-1)cm(-2)with a low limit of detection (LOD) of 13 nM, in a linear dynamic range (LDR) of 0.4 mu M to 40 mu M. The sensor showed reasonably high re-usability and reproducibility, with reliable results for laboratory and real-world samples.
2,4-Dinitrotoluene (2,4-DNT) is a nitro aromatic compound used as a raw material for trinitrotoluene (TNT) explosive synthesis along with several other industrial applications. Easy, rapid, cost-effective, and selective detection of 2,4-DNT is becoming essential due to its hepato carcinogenic nature and presence in surface as well as ground water as a contaminant. Keeping this in view, this research, for the first-time, reports the synthesis of novel ZnO-Ag2O composite nanoflowers on a gold (Au) substrate, to fabricate an electrochemical sensor for label-free, direct sensing of 2,4-DNT selectively. The proposed ZnO-Ag2O/Au sensor exhibits a sensitivity of 5 mu A mu M(-1)cm(-2)with a low limit of detection (LOD) of 13 nM, in a linear dynamic range (LDR) of 0.4 mu M to 40 mu M. The sensor showed reasonably high re-usability and reproducibility, with reliable results for laboratory and real-world samples.
