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Hindi Research Article, J Nanomater Mol Nanotechnol Vol: 4 Issue: 4
Sensing Element Based on a New Nanoparticle to Develop a Carbon past Electrode for Highly Sensitive Determination of Ag+ in Aqueous Solutions
| Abdollah Yari*, Marzieh Bagheri and Marzieh Saeidikhah |
| Deparment of analytical chemistry, Lorestan University, Khorramabad, Iran |
| Corresponding author : Abdollah Yari Deparment of analytical chemistry, Lorestan University, Khorramabad–Iran Tel/Fax: +98 661 6200612; E-mail: a.yari@ymail.com |
| Received: March 28, 2015 Accepted: July 09, 2015 Published: July 15, 2015 |
| Citation: Yari A, Bagheri M, Saeidikhah M (2015) Sensing Element Based on a New Nanoparticle to Develop a Carbon past Electrode for Highly Sensitive Determination of Ag+ in Aqueous Solutions. J Nanomater Mol Nanotechnol 4:4. doi:10.4172/2324-8777.1000166 |
Abstract
Sensing Element Based on a New Nanoparticle to Develop a Carbon past Electrode for Highly Sensitive Determination of Ag+ in Aqueous Solutions
Here, we report the use of newly synthesized amine-functionalized silica nanoparticles (SNP-NH2s), based on multi-walled carbon nanotubes (MWCNTs), as heart of a sensing element for construction a new carbon paste electrode. Then, the modified electrode was successfully applied in Ag+ ion quantification by potentiometric method. The results showed that the modified electrode exhibits a Nernstian slope of -59.8 (±0.2) mV/decade for Ag+ ion in aqueous solution. The potential response of electrode covers a wide concentration range from 1.2×10-1 to 7.0×10-9 M of Ag+. The detection limit of the system was found 5.0×10-9 M while it is independent of the pH from 3.5 to 8.0 and shows a quick response time (45 s) with lifetime of about 2 months. The proposed electrode was successfully used as an indicator sensor in determination silver ion in waste-waters of photographic and radiological films.
