Colorimetric sensing of silver ions based on glutathione-mediated MnO2 nanosheets
Abstract
A simple, rapid colorimetric platform has been proposed for detection of Ag+ by naked eyes. The glutathione-mediated MnO2 nanosheets can catalyze colorless TMB into blue oxTMB instantaneously. The limit of detection is 4.23nM, which is of sensitivity to existing other methods. The proposed colorimetric sensor is of high sensitive and selectivity in water and practical samples.
- Publication:
-
Sensors and Actuators B: Chemical
- Pub Date:
- January 2018
- DOI:
- 10.1016/j.snb.2017.07.131
- Bibcode:
- 2018SeAcB.254..468H
- Keywords:
-
- MnO<SUB loc="post">2</SUB> nanosheets;
- Artificial oxidase;
- Colorimetric assay;
- Silver ions detection;
- GSH-mediated system