Affiliations 

  • 1 Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember Keputih, Sukolilo Surabaya 60111 Indonesia suprapto@chem.its.ac.id
  • 2 Department of Chemical Engineering, Faculty of Engineering, Universitas Pembangunan Nasional "Veteran" Jawa Timur Surabaya East Java 60294 Indonesia
  • 3 Research Center for Biomass and Bioproducts, National Research and Innovation Agency of Indonesia (BRIN) Cibinong 16911 Indonesia
  • 4 Centre of Advanced Material and Energy Sciences, Universiti Brunei Darussalam Jalan Tungku Link BE 1410 Brunei
  • 5 Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia Skudai Johor Bahru Johor 81310 Malaysia
  • 6 Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Mataram Mataram 83125 Indonesia
RSC Adv, 2024 Feb 21;14(10):6815-6822.
PMID: 38405073 DOI: 10.1039/d3ra07775f

Abstract

To consider silver nanoparticles (AgNPs) as a colorimetric sensor for H2O2 we require investigation of the effects of the homogeneity of the nanoparticle size and morphology on the sensor parameters. Uniformly-sized Ag nanoparticles with diameters of ∼18.8 ± 2.8 nm were produced using microwave irradiation (AgNP1) but non-uniform particles with diameters of ∼71.2 ± 19.4 nm (AgNP2) were formed without microwave irradiation. Microwave synthesis produced AgNP1 with superiority in terms of repeatability, selectivity and sensor stability for up to eight months of storage over AgNP2. AgNP1 exhibited higher sensitivity and detection limits in the working range of 0.01-40000 μM as compared to AgNP2. The application of the AgNP sensor to milk samples provided recovery values of 99.09-100.56% for AgNP1 and 98.18-101.90% for AgNP2. Microwave irradiation resulted in strong and uniform PVP-Ag interactions for isotropic growth into small nanoparticles. Size and morphology uniformity determined the characteristics of the AgNP sensor that can be applied for H2O2 detection in a wide range of concentrations and real-time evaluation, with the potential for industrial applications.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.