Recent advances in silver nanoparticle-based electrochemical sensors for determining organic pollutants in water: a review

Zahran, Moustafa; Khalifa, Ziad; Zahran, M. A.; Azzem, M. Abdel

doi:10.1039/d1ma00769f

Cited by 50 publications

(46 citation statements)

References 174 publications

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“…It could be observed that the cathodic peak was clear at all investigated concentrations of HMF and the measured cathodic current sharply improved with the increase in the molarity of HMF in the supporting electrolyte. AgNP-modified electrodes are known for their increased electroactive surface area and superior conductivity compared with unmodified electrodes [ 59 ]. They can detect various inorganic and organic analytes on the basis of the electrochemical responses of AgNPs [ 60 , 61 ].…”

Section: Resultsmentioning

confidence: 99%

Carboxymethyl-Cellulose-Containing Ag Nanoparticles as an Electrochemical Working Electrode for Fast Hydroxymethyl-Furfural Sensing in Date Molasses

Alqahtani

Alnemr

Shulaybi³

et al. 2022

Polymers

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Novel biosensors based on carboxymethyl cellulose extract from date palm fronds containing Ag nanoparticles as an electrochemical working electrode for fast hydroxymethylfurfural (HMF) sensing in date molasses were prepared. The morphological, structural, and crystallinity characteristics of the prepared Ag@CMC were described via SEM, DLS, TEM, and XRD. In addition, Raman spectroscopy and UV–VIS spectroscopy were performed, and thermal stability was studied. The investigated techniques indicated the successful incorporation of AgNPs into the CMC polymer. The sensing behavior of the prepared AgNPs@CMC electrode was studied in terms of cyclic voltammetry and linear scan voltammetry at different HMF concentrations. The results indicated high performance of the designed AgNPs@CMC, which was confirmed by the linear behavior of the relationship between the cathodic current and HMF content. Besides, real commercial samples were investigated using the novel AgNPs@CMC electrode.

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Section: Resultsmentioning

confidence: 99%

Carboxymethyl-Cellulose-Containing Ag Nanoparticles as an Electrochemical Working Electrode for Fast Hydroxymethyl-Furfural Sensing in Date Molasses

Alqahtani

Alnemr

Shulaybi³

et al. 2022

Polymers

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“…The selection of functional electrode-modifying material may overcome the common analytical problems of bare electrodes, such as electrode fouling and overlapping of the redox-potential in the simultaneous determination of multiple analytes. In this context, silver nanoparticles (AgNPs) are one of the most relevant and frequently used materials for the development of versatile electrochemical sensing platforms due to their unique physicochemical properties [ 13 ]. AgNPs can be produced in an easy and cost-effective way with various morphologies, have an adjustable architecture, and are stable at room temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a large number of review articles have been reported regarding nanomaterial-enhanced electrochemical devices for monitoring various pollutants in the aquatic environments—heavy metals [ 31 ], chemicals [ 32 ], organic molecules [ 13 ], nutrients [ 33 ], nitrites and nitrates [ 8 ], and pharmaceuticals [ 4 ]—providing a broad survey through the field of nanosilver-based sensing platforms. This can be evidenced by the exponential growth in the number of scientific papers implementing nanosilver particles for the development of electrochemical sensors in the period of the last twenty years (determined by searching the WoS platform using the keywords electrochemical* (title) AND *silver OR Ag AND *nano AND environmental*; Figure 1 ).…”

Section: Introductionmentioning

confidence: 99%

The Role of Silver Nanoparticles in Electrochemical Sensors for Aquatic Environmental Analysis

Ivanišević

2023

Sensors

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With rapidly increasing environmental pollution, there is an urgent need for the development of fast, low-cost, and effective sensing devices for the detection of various organic and inorganic substances. Silver nanoparticles (AgNPs) are well known for their superior optoelectronic and physicochemical properties, and have, therefore, attracted a great deal of interest in the sensor arena. The introduction of AgNPs onto the surface of two-dimensional (2D) structures, incorporation into conductive polymers, or within three-dimensional (3D) nanohybrid architectures is a common strategy to fabricate novel platforms with improved chemical and physical properties for analyte sensing. In the first section of this review, the main wet chemical reduction approaches for the successful synthesis of functional AgNPs for electrochemical sensing applications are discussed. Then, a brief section on the sensing principles of voltammetric and amperometric sensors is given. The current utilization of silver nanoparticles and silver-based composite nanomaterials for the fabrication of voltammetric and amperometric sensors as novel platforms for the detection of environmental pollutants in water matrices is summarized. Finally, the current challenges and future directions for the nanosilver-based electrochemical sensing of environmental pollutants are outlined.

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“…In 2015, Dai et al introduced the concept of re-creation of the existing platforms, which transferred the NPs-based colorimetric assay into the electrochemical analysis with Hg 2+ as the model analyte [28]. After that, a number of attempts have been put into the construction of various detection techniques based on the conversion of aggregation-based colorimetirc assays to interfacial analytical assays [29][30][31][32][33]. In addition to acting as the aggregation triggers, biomacromolecules with nanoscale sizes can also be used as the self-assembling building blocks to form diverse nanostructures for drug delivery and biosensing.…”

Section: Introductionmentioning

confidence: 99%

In Situ Assembly of Nanomaterials and Molecules for the Signal Enhancement of Electrochemical Biosensors

et al. 2021

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The physiochemical properties of nanomaterials have a close relationship with their status in solution. As a result of its better simplicity than that of pre-assembled aggregates, the in situ assembly of nanomaterials has been integrated into the design of electrochemical biosensors for the signal output and amplification. In this review, we highlight the significant progress in the in situ assembly of nanomaterials as the nanolabels for enhancing the performances of electrochemical biosensors. The works are discussed based on the difference in the interactions for the assembly of nanomaterials, including DNA hybridization, metal ion–ligand coordination, metal–thiol and boronate ester interactions, aptamer–target binding, electrostatic attraction, and streptavidin (SA)–biotin conjugate. We further expand the range of the assembly units from nanomaterials to small organic molecules and biomolecules, which endow the signal-amplified strategies with more potential applications.

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Recent advances in silver nanoparticle-based electrochemical sensors for determining organic pollutants in water: a review

Abstract: Water pollutants have attracted a great attention because their negative effect on human health. Accordingly, various analytical techniques were investigated to detect the water pollutants as a preliminary step for...

Cited by 50 publications

References 174 publications

Carboxymethyl-Cellulose-Containing Ag Nanoparticles as an Electrochemical Working Electrode for Fast Hydroxymethyl-Furfural Sensing in Date Molasses

Carboxymethyl-Cellulose-Containing Ag Nanoparticles as an Electrochemical Working Electrode for Fast Hydroxymethyl-Furfural Sensing in Date Molasses

The Role of Silver Nanoparticles in Electrochemical Sensors for Aquatic Environmental Analysis

In Situ Assembly of Nanomaterials and Molecules for the Signal Enhancement of Electrochemical Biosensors

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