Functionalized Silver Nanoparticles as Selective Colorimetric Sensors for Fe3+

Kerdkok, Dhanapat; Apiratikul, Nuttapon; Tongraung, Pan; Jittangprasert, Piyada

doi:10.1007/s40995-022-01275-9

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Colorimetry is a commonly used strategy for the detection of metal ions; however, it is confined to applications in relatively narrow fields [ 1 , 2 ]. The colorimetric method possesses many merits including convenience, rapid response, and low detection limit [ 3 , 4 ]. For example, the silver nanoparticles (AgNPs) suspension, which is a widely used agent for colorimetric detection, can be processed into portable test paper for the qualitative visual inspection or the quantitative spectrophotometry detection of metal ions within a very short timeframe [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Extending Ag Nanoparticles as Colorimetric Sensor to Industrial Zinc Electrolyte for Cobalt Ion Detection

Xiao

Weng

Tang³

et al. 2023

Molecules

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The direct and rapid determination of trace cobalt ion (Co2+) in the electrolyte of zinc smelting plants is urgently needed but is impeded by the severe interference of extremely high-concentration zinc ions in the solution. Herein, colorimetric detection of Co2+ by the polyvinylpyrrolidone functionalized silver nanoparticles (PVP-AgNPs) is realized in solutions with the Zn/Co ratio being high, up to (0.8–5) × 104, which is located within the ratio range in industrial solution. The high concentration of Zn2+ induces a strong attenuation of Co2+-related signals in ultraviolet-visible (UV-vis) extinction spectra; nevertheless, a good linear range for detecting 1–6 mg/L Co2+ in 50 g/L Zn2+ solution is still acquired. The strong anti-interference toward other metal ions and the mechanism understanding for trace Co2+ detection in such a high-concentration Zn2+ solution are also revealed by systematic analysis techniques. The results extend the AgNPs as colorimetric sensors to industrial solutions, providing a new strategy for detecting trace-metal ions in industrial plants.

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