In situ surface-enhanced Raman spectroscopy effect in zeolite due to Ag2Se quantum dots

Martínez-Núñez, C.E.; Cortez-Valadez, M.; Delgado‐Beleño, Y.; Flores-López, N. S.; Román-Zamorano, J. F.; Flores-Valenzuela, J.; Flores-Acosta, M.

doi:10.1007/s11051-016-3725-2

Cited by 6 publications

(3 citation statements)

References 34 publications

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“…The existence of Ag 2 Se-NCs was also established by the appearance of an absorption band between 350 and 450 nm with an absorption intensity at 395.61 nm compared with other studies (Fig. 2a) (Delgado-Beleño et al 2018;García et al 2020;Martinez-Nuñez et al 2017). In the formation of Ag 2 Se-NCs, first selenium ions are reduced to Se 2 and then co-precipitation occurs with Ag cations.…”

Section: Ag 2 Se-ncs Synthesis and Characterizationsupporting

confidence: 59%

Bio-inspired silver selenide nano-chalcogens using aqueous extract of Melilotus officinalis with biological activities

Mirzaei

Lashgarian

Karkhane

et al. 2021

Bioresour. Bioprocess.

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For the first time, an aqueous extract of Melilotus officinalis was used to synthesize bimetallic silver selenide chalcogenide nanostructures (Ag2Se-NCs). The formation of NCs was confirmed and characterized by UV–visible and FTIR spectroscopy, SEM and TEM imaging, XRD and EDX crystallography, zeta potential (ZP) and size distribution (DLS). The bioactivities of biosynthesized Ag2Se-NCs, such as antibacterial, antibiofilm, antioxidant and cytotoxicity potentials, were then examined. Bio-based Ag2Se-NCs were successfully synthesized with mostly spherical shape in the size range of 20–40 nm. Additionally, the MIC and MBC values of Ag2Se-NCs against β-lactam-resistant Pseudomonas aeruginosa (ATCC 27853) were 3.12 and 50 µg/ml, respectively. The DPPH scavenging potential of Ag2Se-NCs in terms of IC50 was estimated to be 58.52. Green-synthesized Ag2Se-NCs have been shown to have promising benefits and could be used for biomedical applications. Although the findings indicate promising bioactivity of Ag2Se-NCs synthesized by M. officinalis extract (MO), more studies are required to clarify the comprehensive mechanistic biological activities.

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Section: Ag 2 Se-ncs Synthesis and Characterizationsupporting

confidence: 59%

Bio-inspired silver selenide nano-chalcogens using aqueous extract of Melilotus officinalis with biological activities

Mirzaei

Lashgarian

Karkhane

et al. 2021

Bioresour. Bioprocess.

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“…Although many approaches to the production of uniform, low‐dimensionality nanostructures have been implemented over the years,, fabrication in confined spaces never lost its appeal. In particular, the improvement of synthesis and characterization techniques combined with insight from computational studies fostered this decade's tremendous progress ,…”

Section: Clusters Of Metals or Semiconductors: Organization Of Zero‐dmentioning

confidence: 99%

Supramolecular Organization in Confined Nanospaces

Tabacchi

2018

ChemPhysChem

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Empty spaces are abhorred by nature, which immediately rushes in to fill the void. Humans have learnt pretty well how to make ordered empty nanocontainers, and to get useful products out of them. When such an order is imparted to molecules, new properties may appear, often yielding advanced applications. This review illustrates how the organized void space inherently present in various materials: zeolites, clathrates, mesoporous silica/organosilica, and metal organic frameworks (MOF), for example, can be exploited to create confined, organized, and self-assembled supramolecular structures of low dimensionality. Features of the confining matrices relevant to organization are presented with special focus on molecular-level aspects. Selected examples of confined supramolecular assemblies - from small molecules to quantum dots or luminescent species - are aimed to show the complexity and potential of this approach. Natural confinement (minerals) and hyperconfinement (high pressure) provide further opportunities to understand and master the atomistic-level interactions governing supramolecular organization under nanospace restrictions.

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“…This is reminiscent of the Ag 2 Se quantum dots-induced SERS of F9-NaX zeolite reported recently by Cortez-Valadez. 30 The peak at 835 cm À1 was reduced in spectrum 3. The data in Table 2 clearly indicated the presence of catechin on the beads used to generate this spectrum.…”

Section: Resultsmentioning

confidence: 94%

Adsorbate enrichment on a zeolite surface and assembly of a SERS sensor: a case study with silver nanoparticles and the flavonoid catechin

et al. 2019

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In situ surface-enhanced Raman spectroscopy effect in zeolite due to Ag2Se quantum dots

Cited by 6 publications

References 34 publications

Bio-inspired silver selenide nano-chalcogens using aqueous extract of Melilotus officinalis with biological activities

Bio-inspired silver selenide nano-chalcogens using aqueous extract of Melilotus officinalis with biological activities

Supramolecular Organization in Confined Nanospaces

Adsorbate enrichment on a zeolite surface and assembly of a SERS sensor: a case study with silver nanoparticles and the flavonoid catechin

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