Electrochemical Zn2+ Detection Using Tannic Acid-Capped Gold Nanoparticle Modified Glassy Carbon Electrode
| Main Author: | Alex Lukmanto Suherman; Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ |
|---|---|
| Other Authors: | Indonesia Endowment Fund (LPDP) 2016-2020 |
| Format: | Article application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Directorate of Research and Community Engagement, Universitas Indonesia
, 2018
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| Subjects: | |
| Online Access: |
http://journal.ui.ac.id/index.php/science/article/view/9301 |
Daftar Isi:
- An electrochemical method for zinc (Zn2+) detection in aqueous solution is reported using tannic acid-capped gold nanoparticle modified glassy carbon electrode. Tannic acid functioned both as stabilizing agent for gold nanoparticles and as complexing agent for Zn2+. The sensing based on square wave voltammetry achieves a markedly measurable lower limit of 10.0 pM with a relative standard deviation of less than 3%. A linear detection range was obtained up to 1.0 mM. This result, which compares favorably with the results of alternative detection methods, indicates that the method can be a useful reference for routine monitoring of Zn2+.