In situ synthesis of Ag–Cu bimetallic nanoparticles in silicate glass by a two-step ion-exchange route

Xiang, Yang; Li, L.L.; Huang, Min; Zhao, Jian; Hou, Junwei

doi:10.1016/j.jnoncrysol.2010.11.061

Cited by 17 publications

(10 citation statements)

References 15 publications

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“…These experiments have shown that, during such treatments, the separate silver or copper spherical nanoparticles characterized by the plasmon resonances with the peak maxima at λ = 420 and 550 nm, respectively, are formed in glasses. This result is similar to that described in ref 38. Figure 1 shows the optical density spectra of the first group of BK7 glass samples (i) prior to any treatment, (ii) after the first (i. e., silver) IE, (iii) after the subsequent thermal treatment at T = 580°C for 1 h, and (iv) after the second (i.e., copper) IE.…”

Section: ■ Resultssupporting

confidence: 85%

“…As a result, the silver nanoparticles were also formed in glass. The authors of ref 38 concluded that the preliminary embedment of copper ions into glass increases the efficiency of the silver ion reduction and contributes to the silver nanoparticle formation. However, the efficiency of the silver ion reduction can also be increased by hydrogen that can stay in the glass after the TT in the dissolved state.…”

Section: ■ Introductionmentioning

confidence: 99%

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Formation of Core–Shell Bimetallic Nanostructures in Alkali Silicate Glasses in the Course of Silver and Copper Ion Exchange and Thermal Treatment

2015

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Experimental data on the formation of the core−shell bimetallic spherical nanostructures in alkali silicate glasses is presented. The Ag−Cu and Cu−Ag core−shell bimetallic spherical nanostructures were formed in the nearsurface glass layers by the successive Na + → Ag + and Na + → Cu + or Na + → Cu + and Na + → Ag + ion exchange and subsequent thermal treatment above the glass transition temperature. The optical density measurements have shown that the Ag−Cu core−shell nanostructures provide three plasmon resonances and the Cu−Ag core−shell nanostructures provide at least four plasmon resonances. Experimental results obtained are confirmed by computer simulation in the dipole quasistatic approximation. ■ INTRODUCTIONOptical composite media (liquids, polymers, glasses) with metal nanoparticles are widely used in optics and photonics. As a rule, such media reveal the pronounced nonlinear optical properties and can be used for developing ultrafast all-optical switches. 1 In this case, glasses with the noble metal and copper nanoparticles attract the special attention of researchers because these metal nanoparticles have a large cubic nonlinear susceptibility. 2−6 The nonlinear susceptibility increases considerably near the plasmon resonances of the nanoparticles due to the local enhancement of the field amplitude of the electromagnetic wave. 7 However, the spectral localization of the plasmon resonances limits the spectral region favorable for the nonlinear application of the media with metal nanoparticles. This is why a search into the possibilities to shift spectrally the plasmon resonance is of practical unterest. To implement the spectral shift of the plasmon resonance, a change in either the size and shape of nanoparticles 8−10 or the refractive index of the surrounding host 8,11 can be used. Another way to produce the plasmon resonance spectral shift is the synthesis of nanoparticles or nanostructures containing two or more metals. 12−14 The realization of this method can be performed along two directions as follows: (i) the synthesis of nanoparticles consisting of an alloy of two metals, for example, Au−Ag or Au−In, 15−18 and (ii) the synthesis of nanostructures with the metal core and a shell of some other metal. Such nanostructures are studied experimentally and theoretically, in the most elaborate way, for the Ag−Au and Au−Ag core−shell cases. 19−24 Here, the first and second elements correspond to the core and shell, respectively. It was shown in refs 21 and 25−28 that composite media with the nanostructures mentioned are of interest not only for their nonlinear optical application but also for their application in sensors and solar cells. The nonspherical core−shell metal nanostructures were also widely investigated. It was shown in refs 29−31 that core− shell metal nanostructures having the form of prolate ellipsoids provide three plasmon resonances. Spherical core−shell Au−Ag and Ag−Au nanostructures were studied theoretically in refs 24, 32, and 33. Optical properties of nanostructures with two Ag and...

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Section: ■ Resultssupporting

confidence: 85%

Section: ■ Introductionmentioning

confidence: 99%

Formation of Core–Shell Bimetallic Nanostructures in Alkali Silicate Glasses in the Course of Silver and Copper Ion Exchange and Thermal Treatment

2015

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“…For the formation of the MeNPs, a glass should contain ions of the desired metal in their composition. Besides conventional melt-quenching and sol-gel techniques, the ions can be introduced by ion-exchange [64][65][66]. Not all metals tend to form clusters and can be easily reduced to metal under heat treatment.…”

Section: Preparation Of Particle-containing Glassesmentioning

confidence: 99%

Nano-Structured Optical Fibers Made of Glass-Ceramics, and Phase Separated and Metallic Particle-Containing Glasses

Veber

Vermillac

et al. 2019

Fibers

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For years, scientists have been looking for different techniques to make glasses perfect: fully amorphous and ideally homogeneous. Meanwhile, recent advances in the development of particle-containing glasses (PCG), defined in this paper as glass-ceramics, glasses doped with metallic nanoparticles, and phase-separated glasses show that these "imperfect" glasses can result in better optical materials if particles of desired chemistry, size, and shape are present in the glass. It has been shown that PCGs can be used for the fabrication of nanostructured fibers-a novel class of media for fiber optics. These unique optical fibers are able to outperform their traditional glass counterparts in terms of available emission spectral range, quantum efficiency, non-linear properties, fabricated sensors sensitivity, and other parameters. Being rather special, nanostructured fibers require new, unconventional solutions on the materials used, fabrication, and characterization techniques, limiting the use of these novel materials. This work overviews practical aspects and progress in the fabrication and characterization methods of the particle-containing glasses with particular attention to nanostructured fibers made of these materials. A review of the recent achievements shows that current technologies allow producing high-optical quality PCG-fibers of different types, and the unique optical properties of these nanostructured fibers make them prospective for applications in lasers, optical communications, medicine, lighting, and other areas of science and industry.Made of glass, optical fibers inherited all positive and negative properties of this material. Glasses are easy and inexpensive to produce on any scale and in any shape, they can possess high chemical stability and mechanical strength, and have high transparency. However, they could hardly compete, for example, with crystalline materials in thermal conductivity, or rare-earth elements' absorption, emission cross-sections, and available transparency range. Recent advances in glass science showed that properties of this material can be significantly improved if some additional phases are formed or impregnated in the glass. In particular, advances have been achieved in the development of particle-containing glasses: glass-ceramic materials, glasses doped with metallic nanoparticles, and phase-separated glasses. To date, these particle-containing glasses have become quite common and actively used in case of the bulk materials, but are still rather new for fiber optics.The purpose of this review is to summarize recent advances in the fabrication of structured fibers made of particle-containing glasses, their potential benefits, their actual properties, and their potential applications. The review covers three types of particle-containing glasses (PCG): crystalline dielectric particles, i.e., glass-ceramics; metallic nanoparticles (MeNPs); and dielectric amorphous particles, i.e., phase-separated glasses.First, we consider properties of the PCG bulk materials, their potenti...

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“…A peculiarly important place among the synthesis techniques is occupied by the ionexchange process [112][113][114], that played a fundamental role in the development and refinement of a variety of methods for silver doping of the glass. Figure 1(c) shows the trend in the number of published papers identified by the words "silver", "glass" and "ion-exchange".…”

Section: Synthesis Of the Silver-doped Glassesmentioning

confidence: 99%

Silver doping of glasses

Gonella

2015

Ceramics International

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In situ synthesis of Ag–Cu bimetallic nanoparticles in silicate glass by a two-step ion-exchange route

Cited by 17 publications

References 15 publications

Formation of Core–Shell Bimetallic Nanostructures in Alkali Silicate Glasses in the Course of Silver and Copper Ion Exchange and Thermal Treatment

Formation of Core–Shell Bimetallic Nanostructures in Alkali Silicate Glasses in the Course of Silver and Copper Ion Exchange and Thermal Treatment

Nano-Structured Optical Fibers Made of Glass-Ceramics, and Phase Separated and Metallic Particle-Containing Glasses

Silver doping of glasses

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