Nanoparticle intervention for heavy metal detection: A review

Shrivastava, Priya; Jain, V. K.; Nagpal, Suman

doi:10.1016/j.enmm.2022.100667

Cited by 18 publications

(10 citation statements)

References 208 publications

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“…Heavy metal receptors can be employed for specific sensing through ion chelation-induced aggregation, resulting in a heightened sensitivity of detection tools owing to the enhanced hyper-Rayleigh scattering of nanomaterials. 141 (ii) Selectivity improvement The surface of NPs can be modified with specific receptors or ligands having high affinity and selectivity for iodide ions. These receptors can be designed to identify the particular features of iodide ions.…”

Section: Strategies To Address Challengesmentioning

confidence: 99%

Nanomaterial-based probes for iodide sensing: synthesis strategies, applications, challenges, and solutions

Mansha,

Abbas,

Altaf

et al. 2024

J. Mater. Chem. C

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Section: Strategies To Address Challengesmentioning

confidence: 99%

Nanomaterial-based probes for iodide sensing: synthesis strategies, applications, challenges, and solutions

Mansha,

Abbas,

Altaf

et al. 2024

J. Mater. Chem. C

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“…GQDs were a fluorescent platform for detecting various metal ions, biomolecules, and pesticides. Sensors have been developed for metal ions like Fe 3+ , Cu 2+ , Zn 2+ , Cd 2+ , Ag 2+ , and Co 2+ . , Various heavy metal ions affect the environment such as Hg 2+ , Pb 2+ , As 3+ , etc. − GQDs were prepared through the pyrolysis of citric acid, and a green PL sensor was developed for the selective and sensitive determination of chlorine . The N-GQDs and SN-GQDs were synthesized using glutathione as a precursor via hydrothermal treatment .…”

Section: Applications Of Gqdsmentioning

confidence: 99%

Bioresource-Based Graphene Quantum Dots and Their Applications: A Review

Sohal

Singla

Malode

et al. 2023

ACS Appl. Nano Mater.

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Environmental worsening, energy crises, and various other factors have enhanced the demand for facile, cheap, and green approaches for creating emerging materials from bioresources. In recent times, graphene quantum dots (GQDs) are the most developing zero-dimensional nanomaterials owing to exclusive electronic and optical properties. Biomass-derived GQDs have been considered an advanced material and have gained complete attention because of their green, inexpensive, nonsustainable, environmental-friendly, and recyclable nature. This review elucidates the current challenges and the use of bioprecursors (e.g., rice husk, plant leaves, honey, coffee) and the methodologies (top-down and bottom-up) of their conversion into ecofriendly GQDs. Biomass resources are converted into ecofriendly GQDs and a facile, low-cost, scalable synthesis. Biomass-derived GQDs are in great demand due to attractive properties like large surface area, low toxicity, and good biocompatibility. Various parameters like absorption, surface and edge states, and quantum confinement affecting the physical, chemical, and electrochemical properties of GQDs are discussed. This review also focuses further on the result of heteroatom doping, pH, and solvent on the photoluminescence (PL) emission of GQDs. The optical and electrochemical sensors based on biomass-derived GQDs are explored in detail. Biomass-derived GQDs have tremendous performance in the biomedical field and energy applications due to their very low toxicity and biocompatibility. This review addresses the future approaches and possible research directions in biomass-derived GQDs. GQDs display minimal cytotoxic reactivity, superior biocompatibility, and chemical insensitivity. To enhance the optoelectronic and physicochemical characteristics of GQDs, their properties can be tuned via surface/edge functionalization or doping. Monitoring the concentrations of pollution gases severely harming the biosphere requires developing more precise and sensitive sensors. Doped GQDs can significantly increase their capacity to adsorb. The reliable gas sensors based on doped GQDs could be a viable replacement for the present sensors available in the market.

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“…The presence of heavy metals can accelerate the aggregation of AuNPs to stimulate a red shift in the localized surface plasmon resonance band, resulting in the color change of the aqueous solution [ 102 , 103 ]. Apart from AuNPs, silver nanoparticles (AgNPs) and copper nanoparticles (CuNPs) are widely used in colorimetric detection because they also have plasmonic properties as AuNPs [ 104 , 105 ]. In solution, unaggregated AgNPs with sizes smaller than 30 nm and CuNPs with sizes ranging from 10 to 20 nm have yellow and red color, respectively [ 106 , 107 ].…”

Section: Nanotechnology In Food Monitoringmentioning

confidence: 99%

Recent Progress in Nanotechnology-Based Approaches for Food Monitoring

et al. 2022

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Throughout the food supply chain, including production, storage, and distribution, food can be contaminated by harmful chemicals and microorganisms, resulting in a severe threat to human health. In recent years, the rapid advancement and development of nanotechnology proposed revolutionary solutions to solve several problems in scientific and industrial areas, including food monitoring. Nanotechnology can be incorporated into chemical and biological sensors to improve analytical performance, such as response time, sensitivity, selectivity, reliability, and accuracy. Based on the characteristics of the contaminants and the detection methods, nanotechnology can be applied in different ways in order to improve conventional techniques. Nanomaterials such as nanoparticles, nanorods, nanosheets, nanocomposites, nanotubes, and nanowires provide various functions for the immobilization and labeling of contaminants in electrochemical and optical detection. This review summarizes the recent advances in nanotechnology for detecting chemical and biological contaminations in the food supply chain.

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Nanoparticle intervention for heavy metal detection: A review

Cited by 18 publications

References 208 publications

Nanomaterial-based probes for iodide sensing: synthesis strategies, applications, challenges, and solutions

Nanomaterial-based probes for iodide sensing: synthesis strategies, applications, challenges, and solutions

Bioresource-Based Graphene Quantum Dots and Their Applications: A Review

Recent Progress in Nanotechnology-Based Approaches for Food Monitoring

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