Colorimetric detection of Al(<scp>iii</scp>) in vermicelli samples based on ionic liquid group coated gold nanoparticles

Chen, Wenwen; Jia, Yuexiao; Yan, Feng; Zheng, Wenshu; Wang, Zhuo; Jiang, Xingyu

doi:10.1039/c5ra09099g

Cited by 21 publications

(10 citation statements)

References 51 publications

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“…The sensitivity of this colorimetric sensor was compared to reported methods using nanoparticles as sensors. − ,− The limit of detection of our proposed method is lower or comparable to the other reported methods for Al 3+ ion (Table S2). Easy synthesis, short response time, working at physiological pH, and application to the real water samples makes the present method more advantageous over other reported methods.…”

Section: Resultsmentioning

confidence: 61%

Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al³⁺

Joshi

Painuli

Kumar

2017

ACS Sustainable Chem. Eng.

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Aluminum is a hazardous element, found abundantly in the environment. Although many methods have been reported for the efficient detection of aluminum, an easy and accessible sensor for fast detection of aqueous aluminum has not been devised to date. In this approach, we have synthesized indole-2-carboxylic acid capped silver nanoparticles (I2CA-AgNPs) using a one-pot method and used them as label-free nanosensors for the detection of Al3+ in the presence of interfering metal ions. I2CA-AgNPs were synthesized by two methods at different temperatures. AgNPs synthesized by the heating method were further used as detection probes as they showed a strong and narrow surface plasmon resonance (SPR) peak in the visible region. The sensitivity of the detection probe has been optimized by variations in size and distribution of nanoparticles. Synthesized AgNPs were characterized by UV–vis spectroscopy, high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared (FT-IR), zeta potential, and dynamic light scattering (DLS) analysis. Based on these results, I2CA-AgNPs could be used as colorimetric sensors to selectively detect the presence of Al3+. Further, results are confirmed by theoretical calculations of binding energy by density functional theory (DFT). Moreover, the nanosensor can also be applied to trace aluminum contamination in different types of water samples. The lower detection limit of the proposed method is 0.01 ppm (S/N = 3) which falls in the permissible limit set by the United States Environmental Protection Agency (USEPA), i.e. 50 ppm.

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Section: Resultsmentioning

confidence: 61%

Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al³⁺

Joshi

Painuli

Kumar

2017

ACS Sustainable Chem. Eng.

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“…Therefore, this confirms the utility of the developed nanosensor for the detection of Al(III) ions in real water samples. The sensitivity of this colorimetric sensor was compared to reported methods using nanoparticles as sensors 34 , 52 – 55 . The limit of detection of our proposed method is lower or comparable to the other reported methods for Al(III) ion (Table 1 ).…”

Section: Resultsmentioning

confidence: 99%

Mentha-Stabilized Silver Nanoparticles for High-Performance Colorimetric Detection of Al(III) in Aqueous Systems

Sharma

Dhillon

Kumar

2018

Sci Rep

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The present paper reports a facile and selective colorimetric method for the detection of potential environmental and health hazardous metal ions using green synthesized silver nanoparticles (AgNPs). Here the organic functional groups present in the plant extract (Mentha arvensis) are used as reductants and stabilizers in the synthesis of AgNPs. They also provide a suitable binding site to the (Al(III)) analyte in the detection mechanism. The leaf extract of Mentha arvensis was used to synthesize AgNPs at room-temperature and at 80 °C. The AgNPs synthesized at 80 °C exhibit excellent selective colorimetric detection of Al(III). The as-synthesized AgNPs have been characterized, and the synthesis, stabilization of NPs and detection mechanism has also been illustrated by using UV-vis, XPS, FTIR, TEM, EDX, SEM, AAS, and TGA analytical tools and techniques. The selectivity of detection probe was supported by the reaction between probe and metal ions followed first-order kinetics having the highest value of the regression coefficient (R2 = 0.99) for Al(III) and the analysis of thermodynamic parameters. The prepared sensor showed a lower limit of detection (LOD) of 1 nM (S/N = 3.2) in real water samples. The proposed method can be successfully utilized for the detection of Al(III) from both drinking and real water samples at the nanomolar level.

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“…The units on the surface of AuNPs chelate with Al 3+ , thus inducing the aggregation of AuNPs and the color change of solutions from red to blue. Moreover, ionic liquid (1-ethyl-3-methylimidazolium thiocyanate)-coated AuNPs (IL-AuNPs) was prepared in one step using IL as the protecting ligands [11]. The IL resulted in the aggregation of AuNPs and colorimetric detection as well in the presence of Al 3+ , due to the synergistic action of cationic and anionic moiety of IL.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dots Fluorescence-Based Colorimetric Sensor for Sensitive Detection of Aluminum Ions with a Smartphone

et al. 2021

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In this work, blue emission carbon dots (CDs) are synthesized in the one-pot solvothermal method using naringin as precursor. The CDs are used to develop a ratiometric fluorescence sensor for the sensitive analysis of Al3+ with a detection limit of 113.8 nM. A fluorescence emission peak at 500 nm gradually appears, whereas the original fluorescence peak at 420 nm gradually decreases upon the increase in the Al3+ concentration. More importantly, the obvious color change of the CDs probe from blue to green under a 360 nm UV lamp can be identified by a smartphone and combined with the RGB (red/green/blue) analysis. This results in a visual and sensitive analysis of Al3+ with a detection limit of 5.55 μM. Moreover, the high recovery is in the 92.46–104.10% range, which demonstrates the high accuracy of this method for actual samples’ analysis. The use of a smartphone and the RGB analysis greatly simplifies the operation process, saves equipment cost, shortens the detection time, and provides a novel method for the instant, on-site, visual detection of Al3+ in actual samples.

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Colorimetric detection of Al(iii) in vermicelli samples based on ionic liquid group coated gold nanoparticles

Abstract: † Electronic supplementary information (ESI) available: Experimental section, pictures, UV-vis absorption, TEM images and DLS results for IL-Au NPs before and aer adding Al 3+ , ICP-OES result of vermicelli sample with very little Al are provided. See

Cited by 21 publications

References 51 publications

Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al³⁺

Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al³⁺

Mentha-Stabilized Silver Nanoparticles for High-Performance Colorimetric Detection of Al(III) in Aqueous Systems

Carbon Dots Fluorescence-Based Colorimetric Sensor for Sensitive Detection of Aluminum Ions with a Smartphone

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Colorimetric detection of Al(iii) in vermicelli samples based on ionic liquid group coated gold nanoparticles

Abstract: † Electronic supplementary information (ESI) available: Experimental section, pictures, UV-vis absorption, TEM images and DLS results for IL-Au NPs before and aer adding Al 3+ , ICP-OES result of vermicelli sample with very little Al are provided. See

Cited by 21 publications

References 51 publications

Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al3+

Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al3+

Mentha-Stabilized Silver Nanoparticles for High-Performance Colorimetric Detection of Al(III) in Aqueous Systems

Carbon Dots Fluorescence-Based Colorimetric Sensor for Sensitive Detection of Aluminum Ions with a Smartphone

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Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al³⁺

Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al³⁺