Fast and selective colorimetric detection of Fe3+ based on gold nanoparticles capped with ortho-hydroxybenzoic acid

Andreani, Agustina Sus and Kunarti, Eko Sri and Hashimoto, Takeshi and Hayashita, Takashi and Santosa, Sri Juari (2021) Fast and selective colorimetric detection of Fe3+ based on gold nanoparticles capped with ortho-hydroxybenzoic acid. Journal of Environmental Chemical Engineering, 9 (5). ISSN 22133437

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Abstract

A fast and selective colorimetric sensor for detecting Fe3+ was developed using gold nanoparticles capped with ortho-hydroxybenzoic acid (o-HBA AuNPs). This sensor was characterized using UV-Vis spectroscopy, FTIR spectroscopy, XRD, and TEM. The absorbance of surface plasmon resonance (SPR) at 534 nm increased after the addition of Fe3+. It was confirmed by FTIR, XRD, and TEM data indicating that Fe3+ acted as a bridge among the capping agents of AuNPs. The bridges blocked AuNPs from aggregation and caused an increase in the uniformity distribution of o-HBA AuNPs. Under the optimized condition, this sensor had a good calibration curve linearity at 534 nm. The value of R2 obtained was 0.9994 with LoD of 9.19 μM and LoQ of 30.57 μM. This sensor exhibited good precision and accuracy for Fe3+ detection in rice field, river, and sea waters and has been successfully used to detect Fe3+ in the real water samples collected from various locations of Code River, Yogyakarta, Indonesia. © 2021 Elsevier Ltd

Item Type: Article
Additional Information: Cited by: 22
Uncontrolled Keywords: Color; Curve fitting; Fiber optic sensors; Fourier transform infrared spectroscopy; Gold nanoparticles; Metal nanoparticles; Seawater; Surface plasmon resonance; Ultraviolet visible spectroscopy; X ray diffraction; Colorimetric detection; Colorimetric sensors; Fe+3+; Fe3+; Gold nano-particles; Gold nanoparticle; Hydroxybenzoic acids; O-HBA AuNP; Ortho-hydroxybenzoic acid; XRD; Colorimetry
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Mathematics and Natural Sciences > Chemistry Department
Depositing User: Sri JUNANDI
Date Deposited: 02 Oct 2024 13:27
Last Modified: 02 Oct 2024 13:27
URI: https://ir.lib.ugm.ac.id/id/eprint/4088

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