Cysteamine-decorated gold nanoparticles for plasmon-based colorimetric on-site sensors for detecting cyanide ions using the smart-phone color ratio and for catalytic reduction of 4-nitrophenol

Rajamanikandan, Ramar; Shanmugaraj, Krishnamoorthy; Ilanchelian, Malaichamy; Ju, Heongkyu

doi:10.1016/j.chemosphere.2023.137836

Cited by 27 publications

(8 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Resultsmentioning

confidence: 70%

“…2b), primarily stemming from the unique physical properties of the AuNPs. 37 It was worth noting that the degree of nanoparticle aggregation significantly influenced their visual color, 37 and our research findings indicated that within the synthesized hydrogel, the loading of AuNPs did not exhibit any noticeable aggregation. 25 Principle of sodium nitrite detection and optimization of AuNPs-alginate hydrogel preparation conditions SERS was commonly employed for the detection of nitrites using a dual-probe molecular system.…”

Section: Synthesis and Characterization Of Aunps And Aunps-alginate H...mentioning

confidence: 70%

See 1 more Smart Citation

A simple and efficient alginate hydrogel combined with surface-enhanced Raman spectroscopy for quantitative analysis of sodium nitrite in meat products

Liang,

Huang,

Miao

et al. 2024

Analyst

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 70%

Section: Synthesis and Characterization Of Aunps And Aunps-alginate H...mentioning

confidence: 70%

A simple and efficient alginate hydrogel combined with surface-enhanced Raman spectroscopy for quantitative analysis of sodium nitrite in meat products

Liang,

Huang,

Miao

et al. 2024

Analyst

View full text Add to dashboard Cite

show abstract

“…Cyanide ions are persistently generated in the environment through industrial processes such as plastic production, electroplating, metallurgy, and leather tanning. Moreover, industrial activities, such as organic reagent manufacturing, photography, and mining, release large amounts of cyanide into the environment. , Cyanide is a highly toxic chemical that can kill quickly, especially in mammals like humans. It affects the respiratory, cardiovascular, and nervous systems.…”

Section: Introductionmentioning

confidence: 99%

Off-On–Off Cascade Recognition of Cyanide, Mercury, and Aluminum Using N/5-Monosubstituted Rhodanines

Bayindir,

Hussein

2024

ACS Omega

View full text Add to dashboard Cite

This study aims to synthesize N-and 5-monosubstituted rhodanine derivatives as ion-sensing organics and investigate their sensing abilities. Following an easy and green approach to synthesis, the anion-sensing properties of the rhodanines were studied using colorimetric detection and spectroscopic methods. As a result of studies, rhodanines are found to be highly solventcontrolled colorimetric and fluorescent cyanide, mercury, and aluminum sensors. The stoichiometry of the interaction between CN − and both probes was determined to be 1:1 using Job's plot analysis. The binding constants (K s ) of CN − to 5-arylRh and N-arylRh were calculated to be 3.25 × 10 4 and 7.07 × 10 4 M −1 , respectively, demonstrating their high affinity for cyanide ions. The limits of detections for the 5-arylRh and N-arylRh were also determined as 356 and 617 nM, respectively. In addition to detecting CN − , 5-arylRh also serves as a specific turn-off sensor for mercury and aluminum when cyanide and hydroxide are present. This enables the fluorescence intensity to be toggled on/off by alternating the addition of CN − /OH − and Hg 2+ /Al 3+ . Furthermore, the LOD values for Hg 2+ and Al 3+ with 5-arylRh−CN − and 5-arylRh−OH − were determined to be 414 nM and 1.35 μM, respectively. Furthermore, the turn-on binding mechanisms of 5-arylRh and N-arylRh with cyanide ions were elucidated, and the experimental band gap (highest occupied molecular orbital/least unoccupied molecular orbital) energy values corroborated the proposed mechanism. Additionally, the interaction mechanism of the probes with CN − was further investigated by using the 1 H NMR technique. Collectively, these findings suggest that 5-arylRh, N-arylRh, and 5-arylRh−CN − hold promise as selective and sensitive candidate sensors for CN − , Hg 2+ , and Al 3+ ions.

show abstract

“…Hajizadeh et al used colloidal Ag NPs for rapid detection of CN – in solution with the linear response range of the concentration from 16.7–133.3 μmol/L at around the wavelength of 394 nm, while the LOD was 1.8 μM . Au NP-based LSPR was also employed for colorimetric sensors that detected CN ions with the LOD at the nanomolar concentration level. ,− …”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor

Phuong,

Phung,

et al. 2023

Langmuir

Self Cite

View full text Add to dashboard Cite

Cyanides, which are extremely toxic chemicals that are rapidly absorbed into the human body and interact with cytochrome oxidase, strongly inhibit cellular respiration to body death with convulsions. Cyanide ions that exist in many forms in nature such as those found in apricot kernels, cassava roots, and bamboo shoots as cyanogenic glycosides are inevitably used in various industries, including gold and silver mining as well as in dyes and plastic industries. In this study, for the sake of developing ultrahigh-sensitive sensors for cyanide monitoring in a simple manner, we chemically synthesize Au core −Ag shell hybrid nanomaterials of different core/shell thicknesses for colorimetric sensors and fiber optical sensors. Their sensing principle relies on the formation of the Ag/Au cyanocomplex upon cyanide injection. The generated metal cyanocomplex induced changes in refractive indices, causing changes in properties of localized surface plasmon resonance (LSPR), i.e., optical absorbance change for the colorimetric sensors. For fiber optical sensors, the hybrid metal nanoparticles were immobilized on the fiber core surface and the metal cyanocomplex formation induced changes in the fiber cladding refractive index, enabling quantitative cyanide detection with ultrahigh sensitivity. The LSPR-based colorimetric sensor provided the lowest detectable cyanide concentration of 5 × 10 −6 M, whereas the value for the fiber-based sensor was 8 × 10 −11 M.

show abstract

Cysteamine-decorated gold nanoparticles for plasmon-based colorimetric on-site sensors for detecting cyanide ions using the smart-phone color ratio and for catalytic reduction of 4-nitrophenol

Cited by 27 publications

References 55 publications

A simple and efficient alginate hydrogel combined with surface-enhanced Raman spectroscopy for quantitative analysis of sodium nitrite in meat products

A simple and efficient alginate hydrogel combined with surface-enhanced Raman spectroscopy for quantitative analysis of sodium nitrite in meat products

Off-On–Off Cascade Recognition of Cyanide, Mercury, and Aluminum Using N/5-Monosubstituted Rhodanines

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor

Contact Info

Product

Resources

About

Cysteamine-decorated gold nanoparticles for plasmon-based colorimetric on-site sensors for detecting cyanide ions using the smart-phone color ratio and for catalytic reduction of 4-nitrophenol

Cited by 27 publications

References 55 publications

A simple and efficient alginate hydrogel combined with surface-enhanced Raman spectroscopy for quantitative analysis of sodium nitrite in meat products

A simple and efficient alginate hydrogel combined with surface-enhanced Raman spectroscopy for quantitative analysis of sodium nitrite in meat products

Off-On–Off Cascade Recognition of Cyanide, Mercury, and Aluminum Using N/5-Monosubstituted Rhodanines

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Aucore–Agshell Hybrid-Coating-Based Fiber Optical Sensor

Contact Info

Product

Resources

About

Ultrasensitive Monitoring of Cyanide Concentrations in Water Using a Au_core–Ag_shell Hybrid-Coating-Based Fiber Optical Sensor