Modification of boron-doped diamond electrode with gold nanoparticles synthesized by allyl mercaptan as the capping agent for arsenic sensors

N. A. Fauzillah, I. Abdullah, T. A. Ivandini

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Gold nanoparticles (AuNPs) were synthesized using allyl mercaptan (C3H6S) as the capping agent. It was expected that high affinity of gold to groups containing S as well as double bonds in allyl mercaptan structure can be used to form covalent bonds between AuNPs onto the BDD surface. The characterization of AuNPs using a UV-Visible Spectrophotometer produced specific wavelengths of gold nanoparticles in the range of 510-580 nm, while characterization using Transmission Electron Microscopy (TEM) and Particle Size Analyzer (PSA) showed an average size of AuNPs at 29 ± 5 The synthesized AuNPs were deposited on the surface of the BDD electrodes by immersion method under UV light (λ = 254 nm) and characterized using X-Ray Photoelectron Spectroscopy (XPS) and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS). Examination of arsenic sensor was carried out using the Anodic Stripping Voltammetry (ASV) technique. Measurements of As3+ using AuNPs-modified BDD (AuNPs-BDD) electrode showed current responses with good linearity (R2 = 0.99) in the concentration range 0-100 μM with limit detection values of As3+ of 0.064 μM.

Original languageEnglish
Title of host publicationProceedings of the 5th International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2019
EditorsTerry Mart, Djoko Triyono, Tribidasari Anggraningrum Ivandini
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420014
DOIs
Publication statusPublished - 1 Jun 2020
Event5th International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2019 - Depok, Indonesia
Duration: 9 Jul 201910 Jul 2019

Publication series

NameAIP Conference Proceedings
Volume2242
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference5th International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2019
CountryIndonesia
CityDepok
Period9/07/1910/07/19

Keywords

  • allyl mercaptan
  • arsenic
  • Boron-doped diamond
  • gold nanoparticle
  • surface modification

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