Development and Characterization of Gold Nanoparticle-Modified SPCEs for the Electrochemical Sensing

Authors

  • Yuris Diksy Department of Chemical Analysis, AKA Bogor Polytechnic, Jl. Pangeran Sogiri No. 283, Bogor 16154, Indonesia
  • Ardina Purnama Tirta Department of Chemical Analysis, AKA Bogor Polytechnic, Jl. Pangeran Sogiri No. 283, Bogor 16154, Indonesia
  • Herawati Department of Chemical Analysis, AKA Bogor Polytechnic, Jl. Pangeran Sogiri No. 283, Bogor 16154, Indonesia
  • Reza Mulyawan Department of Chemical Analysis, AKA Bogor Polytechnic, Jl. Pangeran Sogiri No. 283, Bogor 16154, Indonesia
  • Moh Hayat Department of Chemical Analysis, AKA Bogor Polytechnic, Jl. Pangeran Sogiri No. 283, Bogor 16154, Indonesia
  • Udin Asrorudin Department of Chemical Analysis, AKA Bogor Polytechnic, Jl. Pangeran Sogiri No. 283, Bogor 16154, Indonesia

DOI:

https://doi.org/10.55749/ijcs.v4i2.71

Keywords:

Cyclic voltammetry, Differential pulse voltammetry, Drop casting, Gold nanoparticles, Screen printed carbon electrode

Abstract

Gold nanoparticles were successfully synthesized by reducing HAuCl4 using jengkol (Archidendron pauciflorum) extract as a reductant. The synthesized gold nanoparticles were characterized by UV–vis spectroscopy and particle size analyzer (PSA). The synthesized gold nanoparticles were deposited on the screen printed carbon electrode (SPCE) substrate using 2 methods, drop casting and differential pulse voltammetry over a potential range of (-1500) mV to 600 mV, scan rate of 100 mV/s for 5 cycles. The surface plasmon resonance (SPR) band of UV– Vis spectrum at 530.7 nm confirmed the presence of gold nanoparticles. The results of Au nanoparticle characterization using PSA show that the size of the Au-NPs formed is 33.5 nm with an optimal HAuCl4 concentration of 0.20 mM. Characterization of gold nano-deposited SPCE was carried out by measuring the peak current of the 1 mM K3Fe(CN)6/K4Fe(CN)6 system in KCl electrolyte solution (0.1 M) using cyclic voltammetry over a potential range of (-500) mV to 1000 mV, scan rate 100 mV/s for 5 cycles. Gold nanoparticles deposited by differential pulse voltammetry showed a higher current response compared to drop casting deposition.

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Published

2025-07-29

How to Cite

Diksy, Y., Tirta, A. P., Herawati, Mulyawan, R., Hayat, M., & Asrorudin, U. (2025). Development and Characterization of Gold Nanoparticle-Modified SPCEs for the Electrochemical Sensing. Indonesian Journal of Chemical Studies, 4(2), 46–51. https://doi.org/10.55749/ijcs.v4i2.71

Issue

Vol. 4 No. 2 (2025): Indones. J. Chem. Stud. December 2025

Section

Research Articles

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Copyright (c) 2025 Indonesian Journal of Chemical Studies

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This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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