Green Silver Nanoparticles Based Multi-Technique Sensor for Environmental Hazardous Cu(II) Ion

Sebastian, Maria; Aravind, Archana; Mathew, Beena

doi:10.1007/s12668-019-0608-x

Cited by 18 publications

(9 citation statements)

References 40 publications

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“…A linear relationship absorbance vs. Cu(II) concentration in the range 10-90 µM was observed. The sensor's selectivity towards Cu(II) was also verified since only small changes of the SPR band were registered in the presence of other different cations (i.e., chromium, mercury, zinc, and nickel) [81].…”

Section: Pharmaceutics Biomolecules and Environmental Contaminants Detectionmentioning

confidence: 82%

Gold and Silver Nanoparticle-Based Colorimetric Sensors: New Trends and Applications

et al. 2021

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Gold and Silver nanoparticles (AuNPs and AgNPs) are perfect platforms for developing sensing colorimetric devices thanks to their high surface to volume ratio and distinctive optical properties, particularly sensitive to changes in the surrounding environment. These characteristics ensure high sensitivity in colorimetric devices. Au and Ag nanoparticles can be capped with suitable molecules that can act as specific analyte receptors, so highly selective sensors can be obtained. This review aims to highlight the principal strategies developed during the last decade concerning the preparation of Au and Ag nanoparticle-based colorimetric sensors, with particular attention to environmental and health monitoring applications.

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Section: Pharmaceutics Biomolecules and Environmental Contaminants Detectionmentioning

confidence: 82%

Gold and Silver Nanoparticle-Based Colorimetric Sensors: New Trends and Applications

et al. 2021

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“…However, anything above a desired level is to be avoided. Similar is the case with copper(II) which above a certain range (0.005–30 mg/L as per USEPA guidelines) can create serous issues like liver failure, toxicity to cells, gastrointestinal issues, and kidney failure. − Nickel also has a higher toxicity level, above its permissible content (0.07 mg/L). The side effects, whether acute or chronic, are really harmful to organisms.…”

Section: Introductionmentioning

confidence: 80%

Riboflavin Functionalized Dextrin-Sodium Alginate Based Fluorescent Sensor: Detoxification of Cu²⁺ and Ni²⁺ Ions

Sharma

Priya

Kaith

et al. 2019

ACS Appl. Polym. Mater.

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The research work performed and described here is in regard to synthesis of dextrin-sodium alginate based hybrid hydrogel film. It showed the maximized percentage swelling at 1145% after optimization of all reaction parameters. It was further functionalized with a fluorophore, i.e., riboflavin, to introduce luminescent behavior to the film. The RDSA film can not only remove but also sense the copper and nickel ions in the surroundings very sensitively up to 0.4445 μM and 0.2571 μM, respectively, which is in the desired range of EPA limits. The RDSA film could detoxify the 5 μM copper and nickel ion concentrated solution to an extent of 95.54% and 91.30%, respectively. The adsorption followed the Flory–Huggins model along with second-order kinetics specifically for higher metal ion concentrations. The detection and adsorption occur as a result of complex formation between the film and metal ion. The intraparticle diffusion mechanism is of two steps and occurs through the outer surface to the inner pores. The ions can also be desorbed with EDTA to reuse the film for further recovery of the metal ions. It can be done for multiple cycles, and finally the film can be degraded biologically when it is of no use. It is due to natural materials being used for the synthesis.

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“…Aggregation of AgNPs triggered by the addition of the analyte is a common optical sensing approach that can be converted to voltammetric [ 98 ] and amperometric sensors [ 101 ]. This strategy is feasible usually in the form of dual- [ 98 , 99 ] or multisensing [ 102 , 106 , 111 , 122 ] platforms, with optical, fluorescent, and electrochemical response towards the detection of HMs. In contrast to the colorimetric assay, electrochemical aggregation of functional silver material results in voltammetric/amperometric signal amplification or inhibition, depending on the chemistry of the nanoparticle stabilizer and the target analyte.…”

Section: Discussionmentioning

confidence: 99%

“…At higher concentrations, copper can be toxic and cause liver damage, gastrointestinal disorders, and neurodegenerative diseases [ 110 ]. The bark extract of Moringa oleifera was utilized as an efficient reducing and stabilizing agent to produce AgNPs that serve as multifunctional sensing probes (optical, fluorescent, and electrochemical) for hazardous Cu(II) in environmental waters [ 111 ]. A simple coating technique was used to modify WE, and the efficiency of the AgNP-MO/PE sensing platform towards divalent copper was validated with CV (sharp current output only in the presence of Cu(II); a flat current line was obtained in aqueous solutions of Hg 2+ , Zn 2+ , Cr 3+ , and Ni 2+ , respectively), and DPV (linear increase in redox current with increase in Cu(II) concentration) techniques.…”

Section: Application Of Silver Nanoparticles In Voltammetric and Ampe...mentioning

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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Green Silver Nanoparticles Based Multi-Technique Sensor for Environmental Hazardous Cu(II) Ion

Cited by 18 publications

References 40 publications

Gold and Silver Nanoparticle-Based Colorimetric Sensors: New Trends and Applications

Gold and Silver Nanoparticle-Based Colorimetric Sensors: New Trends and Applications

Riboflavin Functionalized Dextrin-Sodium Alginate Based Fluorescent Sensor: Detoxification of Cu²⁺ and Ni²⁺ Ions

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

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Green Silver Nanoparticles Based Multi-Technique Sensor for Environmental Hazardous Cu(II) Ion

Cited by 18 publications

References 40 publications

Gold and Silver Nanoparticle-Based Colorimetric Sensors: New Trends and Applications

Gold and Silver Nanoparticle-Based Colorimetric Sensors: New Trends and Applications

Riboflavin Functionalized Dextrin-Sodium Alginate Based Fluorescent Sensor: Detoxification of Cu2+ and Ni2+ Ions

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

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Riboflavin Functionalized Dextrin-Sodium Alginate Based Fluorescent Sensor: Detoxification of Cu²⁺ and Ni²⁺ Ions