Synthesis and characterization of antireflective Ag@AgCl nanocomposite thin films

Nehal, M.El.F.; Bouzidi, A.; Nakrela, A.; Miloua, R.; Medles, M.; Desfeux, Rachel; Blach, Jean-François; Simon, Pardis; Huvé, Marielle

doi:10.1016/j.ijleo.2020.165568

Cited by 10 publications

(2 citation statements)

References 56 publications

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“…The same line also presents in Raman spectrum of the pure silver nanoisland film exposed to PBS. We associate this line with the formation of AgCl [32], which can be seen also in our SEM and AFM measurements as "flakes" on top of the NPs (see Figure 1b). The increase in the range 1250-1750 cm −1 visible both in the spectra of PBS-treated silver nanoisland film itself (Figure 8b) and in the BPE spectra collected using the PBS-treated nanoisland film (Figure 8a) may correspond to amorphous carbon [33] originated from, e.g., reduction of organic impurities.…”

Section: Surface Enhanced Raman Scatteringsupporting

confidence: 74%

Stable in Biocompatible Buffers Silver Nanoisland Films for SERS

et al. 2021

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We investigated the stability of silver nanoisland films, which were formed on glass surface by the method of out-diffusion, in biocompatible buffers and the applicability of the films in surface enhanced Raman scattering (SERS). We have shown that silver nanoisland films are stable in one of the most widespread in biological studies buffer—phosphate buffer saline (PBS), and in 1:100 water-diluted PBS, in the PBS-based buffer, in which NaCl is replaced by the same amount of NaClO4, and in acidic phosphate buffer. At the same time, the replacement of NaCl in PBS by N(CH3)4Cl leads to the degradation of the nanoislands. It was shown that after exposure to PBS the nanoisland films provided a good SERS signal from a monolayer of 1,2-di(4-pyridyl)ethylene (BPE), which makes silver nanoisland films promising for biosensor applications. Additionally, in our experiments, we registered for the first time that silver nanoparticles formed in the bulk of the samples dissolved after exposing to PBS, while nanoislands on the glass surface stayed unchanged. We associate this phenomenon with the interaction of ions contained in PBS solution with silver, which results in the shift of corresponding chemical equilibrium.

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Section: Surface Enhanced Raman Scatteringsupporting

confidence: 74%

Stable in Biocompatible Buffers Silver Nanoisland Films for SERS

et al. 2021

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“…XPS analysis of the silver-doped membranes justified silver in metallic form only ( Figure 2 ). The peaks of Ag 3d photoelectron spectrum with binding energy of 368.6–369.0 eV and 374.6–375.0 eV are assigned to Ag 3d 5/2 and Ag 3d 3/2 of Ag 0 , respectively [ 44 , 45 , 46 ]. The ionic form was not detected on the particle surface of grinded membranes in comparison with the entire volume of the sample analyzed by XRD owing to the surface photolysis of silver halides.…”

Section: Resultsmentioning

confidence: 99%

Electrokinetic Properties of Mesoporous Vitreous Membranes Doped by Silver-Silver Halides

et al. 2023

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Silver/silver halide materials are considered as efficient and highly stable plasmonic photocatalysts for the organic pollutant degradation and hydrogen evolution from water splitting under solar irradiation, and they possess promising antibacterial activity. Ordered mesoporous silica materials including porous glasses are considered as the most promising template for silver-containing structures. In the present work, Ag/AgHal-doped (Hal = Cl, Br) vitreous membranes on a base of the mesoporous glasses were prepared via step-by-step single-stage impregnation procedure. The chemical and phase composition of the modified membranes were identified by the X-ray photoelectron spectroscopy, the X-ray diffraction and the energy-dispersive X-ray spectroscopy. The structure and morphology of inner membrane space were studied by the scanning electron microscopy. Electrokinetic properties of the silver-containing vitreous membranes were determined by the differential method and the streaming potential method. The inner membrane space is modified unevenly with appearance of the clearly defined regions with different silver content. The formation of the Ag/AgCl clusters along with the individual nanoparticles over thickness of the 1-mm membrane with mean pore radius of 23 nm was detected. The modification of the pore space by Ag-containing structures and the type of halogen ion almost do not affect the electrochemical behavior of the mesoporous vitreous membranes.

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