Biosensor for Aluminum(III) Based on α-Chymotrypsin Inhibition using a Disposable Screen-Printed Carbon Electrode and Acetyl-Tyrosine Ethyl Ester as Substrate

Barquero-Quirós, Miriam

doi:10.4172/2150-3494.100089

Cited by 3 publications

(1 citation statement)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the presence of F – ions (curve-c), the extent of aggregation of TA@AgNPs by Al(III) ions was significantly suppressed. This could be due to the formation of water-soluble strong Al–F complexes − with the stability constant (βn = 7–19), , which are significantly higher than those for the Al–TA complexes (βn = 5). ,, Moreover, as the addition of various concentrations of F – ions did not cause any significant absorption change in TA@AgNPs (Figure S7), the anti-aggregation effect of F – ion could be solely due to its interaction with Al(III) ions, which was further proved by the ζ-potential results (Figure S5). The ζ-potentials of TA@AgNPs and TA@AgNPs/Al(III) systems were −19 and −7 mV, respectively.…”

Section: Resultsmentioning

confidence: 79%

Tannic Acid-Functionalized Silver Nanoparticles as Colorimetric Probe for the Simultaneous and Sensitive Detection of Aluminum(III) and Fluoride Ions

Bezuneh,

Ofgea,

Tessema

et al. 2023

ACS Omega

View full text Add to dashboard Cite

In this study, we employed tannic acid (TA)-functionalized silver nanoparticles (TA@AgNPs) as colorimetric probe for the simultaneous and sensitive detection of Al(III) and F − ions. The proposed sensor was based on the aggregation and anti-aggregation effects of target Al(III) and F − ions on TA@ AgNPs, respectively. Because of the strong coordination bond between Al(III) ions and TA, the addition of Al(III) ions to TA@AgNPs could cause aggregation and, hence, result in a significant change in the absorption and color of the test solution. Interestingly, in the presence of F − ions, the aggregation effect of Al(III) ions on TA@AgNPs can be effectively prevented. The extent of aggregation and anti-aggregation effects was concentration-dependent and can be used for the quantitative detection of Al(III) and F − ions. The as-proposed sensor presented the sensitive detection of Al(III) and F ions with limits of detection (LOD) of 0.2 and 0.19 μM, respectively. In addition, the proposed sensor showed excellent applicability for the detection of Al(III) and F − ions in real water samples. Moreover, the sensing strategy offered a simple, rapid, and sensitive detection procedure and could be used as a potential alternative to conventional methods, which usually involve sophisticated instruments, complicated processes, and a long detection time.

show abstract

Section: Resultsmentioning

confidence: 79%

Tannic Acid-Functionalized Silver Nanoparticles as Colorimetric Probe for the Simultaneous and Sensitive Detection of Aluminum(III) and Fluoride Ions

Bezuneh,

Ofgea,

Tessema

et al. 2023

ACS Omega

View full text Add to dashboard Cite

show abstract

Schiff base modified screen printed electrode for selective determination of aluminium(III) at trace level

Rana

Mittal

Singh

et al. 2017

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

Ion-Imprinted Nanofilms Based on Tannic Acid and Silver Nanoparticles for Sensing of Al(III)

Krywko‐Cendrowska

Marot

Mathys

et al. 2021

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Electrochemically triggered self-assembly can be effectively utilized to produce electroactive materials of tailored properties for various applications, such as sensor development. Here, we present a thin sensor film based on tannic acid (TA) and silver nanoparticles (AgNPs), ionically imprinted via electrodeposition and tailor-designed for electrochemical tracing of aluminum ions, Al(III). In the first stage, the conditions for the Al(III)-printing of TA films onto indium-tin-oxide (ITO) electrode via electrodeposition are established and optimized. To form an AgNPs-containing film, AgNPs are presynthesized via a direct reduction of Ag(I) by TA resulting in TA-stabilized AgNPs (TA@AgNPs) of 1-4 nm in size, as observed by dynamic light scattering. Next, Al(III) ions are added to complex the TA molecules adsorbed on the surface of AgNPs. The resulting Al(III)/TA@AgNPs mixture is then electrodeposited onto ITO surface by applying an anodic potential to form a film. As a result a mesh-structured layer composed of AgNPs with TA on their surface and electrochemically cross-linked via TA-TA covalent bonds at the Al(III)-free coordination sites is formed. The introduction of Al(III) ions bonded via coordination bonds with TA and their consecutive removal using sodium fluoride formed vacancies ready to bind Al(III) ions from the analyzed solution allowing their electrochemical sensing, as monitored by cyclic voltammetry, quartz crystal microbalance (QCM) and X-ray photoelectron spectroscopy. The film was employed for sensing of neurotoxic Al(III) in human serum. A linear correlation between the current value at 0.9 V and the concentration of Al(III) was obtained in the range between 0.10 and 0.298 µM. dried using a filter paper. The grids were observed at 200 kV with a Technai G2 (FEI) microscope. Images were acquired with an Eagle 2k (FEI) ssCCD camera.

show abstract

Biosensor for Aluminum(III) Based on α-Chymotrypsin Inhibition using a Disposable Screen-Printed Carbon Electrode and Acetyl-Tyrosine Ethyl Ester as Substrate

Cited by 3 publications

References 41 publications

Tannic Acid-Functionalized Silver Nanoparticles as Colorimetric Probe for the Simultaneous and Sensitive Detection of Aluminum(III) and Fluoride Ions

Tannic Acid-Functionalized Silver Nanoparticles as Colorimetric Probe for the Simultaneous and Sensitive Detection of Aluminum(III) and Fluoride Ions

Schiff base modified screen printed electrode for selective determination of aluminium(III) at trace level

Ion-Imprinted Nanofilms Based on Tannic Acid and Silver Nanoparticles for Sensing of Al(III)

Contact Info

Product

Resources

About