Colorimetric and visual detection of cyanide ions based on the morphological transformation of gold nanobipyramids into gold nanoparticles

Sasikumar, Thangarasu; Ilanchelian, Malaichamy

doi:10.1039/c9nj05929f

Cited by 21 publications

(5 citation statements)

References 33 publications

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“…Several works have demonstrated the effective detection of cyanide in water. Successful detection of cyanide using colloidal AuNP-based colorimetric sensors with excellent detection range was reported in previous literature [33][34][35][36]. Although these studies intensively investigated the potential of gold nanostructures for cyanide detection, their works were restricted to the use of colloidal gold nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Gold nanoparticles-decorated paper-based sensor for rapid cyanide detection in water

Budlayan

Lagare-Oracion

Rosa

et al. 2021

Adv. Nat. Sci: Nanosci. Nanotechnol.

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In this study, a versatile sensing platform based on a commercially available filter paper for the development of a colorimetric sensor using label-free gold nanoparticles (AuNPs) for the detection of cyanide in water is presented. The developed sensor can be applied for the direct detection of cyanide from an aqueous sample efficiently in a wide concentration range. The synthesised AuNPs were found to have an average size of about 13.2 ± 2.65 nm with a surface plasmon resonance peak at around 525 nm. Successful integration of AuNPs on the WFP substrate was observed through the FESEM-EDX analysis and supported by the presence of an absorbance peak at about 528 nm on the spectrum of the WFP-AuNPs composite. The colour of the WFP-AuNPs composite changed from purple-red to white in the presence of cyanide. Using the paper-based sensor, the limit of detection is calculated to be 7.68 × 10−6 M (0.5 ppm). The said sensitivity is good enough for the determination of cyanide in industrial wastewater samples. The developed sensor also showed excellent selectivity towards cyanide over other ions, demonstrating its practical applicability to monitor cyanide contamination in different environmental samples. Furthermore, the applicability of the sensor was demonstrated using several real water samples spiked with cyanide, including creek and tap water. Notably, the sensor showed great promise for the rapid, cost-effective, and versatile monitoring of cyanide contamination in various aqueous samples.

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Section: Introductionmentioning

confidence: 99%

Gold nanoparticles-decorated paper-based sensor for rapid cyanide detection in water

Budlayan

Lagare-Oracion

Rosa

et al. 2021

Adv. Nat. Sci: Nanosci. Nanotechnol.

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“…29 Recently, gold nanobipyramids (AuNBPs) have been utilized to develop a quick, simple, and sensitive colorimetric technique for the detection of CN − . 32 The authors suggested that in the presence of oxygen, CN − ions dissolve metals like gold and silver by producing a metal–cyanide complex. Therefore, AuNBPs undergo a morphological change when exposed to CN − ions, preferably by etching at their tips.…”

Section: Direct Etchingmentioning

confidence: 99%

Plasmonic nanoparticle etching-based optical sensors: current status and future prospects

Athira,

Satija

2023

Analyst

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“…The suggested colorimetric technique provided a potential platform for sensitive and repeatable measurement of CN − ions in various water samples. [ 209 ] Based on a fluorescent naphthalene dye as the fluorophore and using a particular detecting reactive as dicyanovinyl group, a fluorescent assay for CN − detection was fabricated. The colour of the probe switched from blue to green when it was exposed to cyanide.…”

Section: Functional Nanomaterials In Assaying Biomarkersmentioning

confidence: 99%

Recent advances in nanomaterials‐based optical sensors for detection of various biomarkers (inorganic species, organic and biomolecules)

Harshita

Kailasa

2022

Luminescence

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This review briefly emphasizes the different detection approaches (electrochemical sensors, chemiluminescence, surface‐enhanced Raman scattering), functional nanostructure materials (quantum dots, metal nanoparticles, metal nanoclusters, magnetic nanomaterials, metal oxide nanoparticles, polymer‐based nanomaterials, and carbonaceous nanomaterials) and detection mechanisms. Furthermore, the emphasis of this review is on the integration of functional nanomaterials with optical spectroscopic techniques for the identification of various biomarkers (nucleic acids, glucose, uric acid, oxytocin, dopamine, ascorbic acid, bilirubin, spermine, serotonin, thiocyanate, Pb2+, Cu2+, Hg2+, F−, peptides), and cancer biomarkers (mucin 1, prostate specific antigen, carcinoembryonic antigen, CA15‐3, human epidermal growth factor receptor 2, C‐reactive protein, and interleukin‐6). Analytical characteristics of nanomaterials‐based optical sensors are summarized in the tables, providing the insights of nanomaterials‐based optical sensors for biomarkers detection. Finally, the opportunities and challenges of nanomaterials‐based optical analytical approaches for the detection of various biomarkers (inorganic, organic, biomolecules, peptides and proteins) are discussed.

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Colorimetric and visual detection of cyanide ions based on the morphological transformation of gold nanobipyramids into gold nanoparticles

Abstract: In this study, we developed a facile, rapid, selective and sensitive colorimetric method for the detection of cyanide ions (CN−) by using gold nanobipyramids (Au NBPs).

Cited by 21 publications

References 33 publications

Gold nanoparticles-decorated paper-based sensor for rapid cyanide detection in water

Gold nanoparticles-decorated paper-based sensor for rapid cyanide detection in water

Plasmonic nanoparticle etching-based optical sensors: current status and future prospects

Recent advances in nanomaterials‐based optical sensors for detection of various biomarkers (inorganic species, organic and biomolecules)

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