首页|Synthesis and application of CdS nanoparticles-decorated core-shell Ag@Ni nanohybrids for visible-light spectrophotometric assay of sulfide in aqueous sample

Synthesis and application of CdS nanoparticles-decorated core-shell Ag@Ni nanohybrids for visible-light spectrophotometric assay of sulfide in aqueous sample

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  • NSTL
  • Elsevier
Novel Ag@Ni nanosphere decorated with CdS NPs (Ag@Ni-CdS NCs) was synthesized by one step chemical synthesis method. The fabricated NCs were characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), fourier transfer infra-red spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), zeta sizer and particle size analyzer. TEM and XRD confirmed the Ag in core and Ni in shell for the effective formation of Ag@Ni core shell nanosphere. EDAX and XPS spectra of NCs confirms the formation of Ag@Ni-CdS NCs. Zeta potential and particle size of the NCs was found to be 29.5 +/- 1.5 mV and 24 +/- 1 nm respectively. The complete loss in the peak intensity of Ag@Ni-CdS NCs (localized surface plasmon resonance (LSPR)) at similar to 410 nm in presence of S2- ions was observed which indicates its selective detection towards S2- ions. The sulfide ion sensing by Ag@NiCdS NCs was due to the successive oxidation of Ag results in the formulation of Ag2+ ions in the system, which causes the diminishing of LSPR band of NCs. The limit of detection (LOD) of S2- ions by Ag@Ni-CdS NCs was calculated to be of 2.66 nM. The combination of CdS NPs with core-shell Ag@Ni nanosphere guides a promising strategy for S2- ions detection from environmental polluted samples. (C) 2021 Elsevier B.V. All rights reserved.

Ag@Ni-CdS NCsLocalized surface plasmon resonanceDetectionSulfide detectionSELECTIVE DETECTIONFLUORESCENT-PROBEBIMETALLIC NANOPARTICLESCOPPER NANOPARTICLESCATALYTIC-REDUCTIONSENSITIVE DETECTIONPLASMON-RESONANCEROOM-TEMPERATUREQUANTUM DOTSCU

AbdElgawad, Hamada、Al-ghamdi, Abdullah A.、Thomas, Ajith M.、Raju, Lija L.、Khan, S. Sudheer、Al-Qahtani, Wahidah H.、Balasurya, S.、Okla, Mohammad K.、Abdel-maksoud, Mostafa A.

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Univ Antwerp

King Saud Univ

St Xaviers Coll

Mar Ivanios Coll

Bannari Amman Inst Technol

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2022

10.1016/j.saa.2021.120793

Spectrochimica acta

Spectrochimica acta

ISSN：1386-1425
年,卷(期)：2022.270
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