Colorimetric probe for Ni2+ based on shape transformation of triangular silver nanoprisms upon H2O2 etching

Yoon, Sang-Young; Nam, Yun-Sik; Lee, Ho-Jin; Lee, Yeon-Hee; Lee, Kang-Bong

doi:10.1016/j.snb.2019.127045

Cited by 33 publications

(21 citation statements)

References 42 publications

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“…2a), where the presence of the three bands at 331, 460 and 642 nm are related to the out-of-plane quadrupole, in-plane quadrupole and dipole plasmon resonance, respectively. The obtained triangular nanoplates are comparable with those obtained in other experimental conditions [33,44,45].…”

Section: Characterization Of Agnpssupporting

confidence: 87%

“…Another important tool for producing silver anisotropic nanoparticles is oxidation etching by using hydrogen peroxide. H 2 O 2 is a useful compound that can be used in both acidic (E 0 = 1.7736 V) and basic (E 0 = 0.867 V) conditions as an oxidizing agent for Ag 0 (E 0 = 0.7996 V); in this way, metallic silver can be dissolved, and the nanoparticles can be etched by H 2 O 2 to modify the shapes and dimensions of the nanoparticles [11,33,34]. Such properties permit the use of silver nanoparticles as colorimetric plasmon sensors [5,35,36] with the advantages of low cost, simplicity and high sensitivity, and this allows for real-time qualitative and quantitative analysis through transforming analyte concentrations into colour changes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tuning of hydrogen peroxide etching during the synthesis of silver nanoparticles. An application of triangular nanoplates as plasmon sensors for Hg2+ in aqueous solution

Zannotti

Vicomandi

Rossi

et al. 2020

Journal of Molecular Liquids

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Section: Characterization Of Agnpssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Tuning of hydrogen peroxide etching during the synthesis of silver nanoparticles. An application of triangular nanoplates as plasmon sensors for Hg2+ in aqueous solution

Zannotti

Vicomandi

Rossi

et al. 2020

Journal of Molecular Liquids

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“…The oxidative etching with H 2 O 2 formed in the colloidal solution sculptured the sharp corners/edges of the prisms to produce circular Ag nanodisk. The sensor showed a high linearity for Ni (II) concentration in the range of 0 to 30 µM with a limit of detection of 21.6 nM in aqueous solution [127]. The color change of the solution in presence of different amount of Ni (II) is impressive as shown in Figure 8A.…”

Section: Nickelmentioning

confidence: 93%

Silver Nanoparticles as Colorimetric Sensors for Water Pollutants

2020

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This review provides an up-to-date overview on silver nanoparticles-based materials suitable as optical sensors for water pollutants. The topic is really hot considering the implications for human health and environment due to water pollutants. In fact, the pollutants present in the water disturb the spontaneity of life-related mechanisms, such as the synthesis of cellular constituents and the transport of nutrients into cells, and this causes long / short-term diseases. For this reason, research continuously tends to develop always innovative, selective and efficient processes / technologies to remove pollutants from water. In this paper we will report on the silver nanoparticles synthesis, paying attention to the stabilizers and mostly used ligands, to the characterizations, to the properties and applications as colorimetric sensors for water pollutants. As water pollutants our attention will be focused on several heavy metals ions, such as Hg(II), Ni(II),Cu(II), Fe(III), Mn(II), Cr(III/V) Co(II) Cd(II), Pb(II), due to their dangerous effects on human health. In addition, several systems based on silver nanoparticles employed as pesticides colorimetric sensors in water will be also discussed. All of this with the aim to provide to readers a guide about recent advanced silver nanomaterials, used as colorimetric sensors in water.

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“…The oxidative etching with H 2 O 2 formed in the colloidal solution sculptured the sharp corners/edges of the prisms to produce circular Ag nanodisk. The sensor showed a high linearity for Ni (II) concentration in the range of 0 to 30 µM with a limit of detection of 21.6 nM in aqueous solution [38]. Copper is another dangerous ion that can contaminate water and functionalized silver NPs can effectively help in the detection of this contaminant.…”

Section: Chemical Electronic and Opticalmentioning

confidence: 99%

Nanomaterial Sensors for Environmental Pollutants

Chandran

2021

JASR

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Nowadays, global environment of water, soil, and atmospheric systems has continuously been deteriorating due to the incessant release of toxic chemicals from various constructed sources. The existence of heavy metal ions in the environment poses serious threats to human health and the ecosystem. Therefore, this review focuses on the advent of nanotechnology that has given immense opportunities for developing advanced nanomaterials with unique functionalities. This review reports on the development of sensing techniques based on nanomaterials including metal and metal oxide nanomaterials, quantum dots, carbon nanomaterials and polymer nanocomposites. Nanomaterials well possess excellent electrical, optical, thermal, catalytic properties and strong mechanical strength, which offer great opportunities to construct nanomaterials-based sensors or devices for environmental pollutants. The nanosorbents themselves should be nontoxic, the sorbents present relatively high sorption capacities and selectivity to the low concentration of pollutants. The adsorbed pollutants can be removed from the surface of the nanoadsorbent easily and sorbents infinitely recycled.

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Colorimetric probe for Ni2+ based on shape transformation of triangular silver nanoprisms upon H2O2 etching

Cited by 33 publications

References 42 publications

Tuning of hydrogen peroxide etching during the synthesis of silver nanoparticles. An application of triangular nanoplates as plasmon sensors for Hg2+ in aqueous solution

Tuning of hydrogen peroxide etching during the synthesis of silver nanoparticles. An application of triangular nanoplates as plasmon sensors for Hg2+ in aqueous solution

Silver Nanoparticles as Colorimetric Sensors for Water Pollutants

Nanomaterial Sensors for Environmental Pollutants

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