Synthesis of spherical copper-platinum nanoparticles by sonoelectrochemistry followed by conversion reaction

Levi, Samuel; Mancier, Valérie; Rousse, Céline; García, Omar Lozano; Mejia, Jorge; Guzmán, Maribel; Lucas, Stéphane; Fricoteaux, Patrick

doi:10.1016/j.electacta.2015.06.155

Cited by 6 publications

(5 citation statements)

References 44 publications

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“…Particle size distributions were measured with a disc centrifuge. The measurement was based on the centrifugal liquid sedimentation (CLS) method, according to Stokes law using a 405 nm wavelength laser [42]. Figure 2 reveals that Ag NPs are mainly 20 nm-sized and preferentially (111) oriented.…”

Section: Nanoparticles Characterizationmentioning

confidence: 99%

Effects of Ag Nanoparticles on Zinc Oxide Photocatalytic Performance

et al. 2021

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We used a sol–gel spin coating technique to synthesize nanocomposite thin films based on zinc oxide (ZnO) loaded with silver nanoparticles (NPs). We tested these ZnO/Ag NP photocatalysts, with a thickness of about 100 nm, for the photodegradation of the indigo carmine dye solution. The study focused on the effects of Ag NPs on the ZnO matrix as well as the impact of their concentration on the photocatalytic performance of the nanocomposite. The study also highlighted the high stability of the photocatalytic performance of these nanocomposites. This work is a contribution in the search for non-toxic thin film photocatalysts that is usable under solar radiation for the treatment of contaminated wastewater. Innovation in the field of heterogeneous photocatalysis requires the use of solar resource with efficient results in terms of photocatalytic performance.

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Section: Nanoparticles Characterizationmentioning

confidence: 99%

Effects of Ag Nanoparticles on Zinc Oxide Photocatalytic Performance

et al. 2021

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“…Thus, sonoelectrochemical synthesis from FeSO 4 + CoSO 4 solutions of different concentrations makes it possible to obtain Fe 75 Co 25 NPs [ 60 ], Co 65 Fe 35 [ 61 ], FeCo (1–2) NPs [ 62 ], and FeCo (1–4) NPs [ 62 ]. In the case of metals with large differences in the values of Δ E 0 (Cu and Ni [ 64 ], Cu and Pt [ 65 ], Pd and Fe [ 66 ]), an advanced reduction of more electrodegradable metal is observed. For example, during the sonoelectrochemical synthesis of Cu-Pt nanopowders [ 65 ], part of the reduced copper acts as a sacrificial metal to reduce platinum (equation ( 12 )).…”

Section: Sonoelectrochemical Synthesis Of Metallic Nanoparticlesmentioning

confidence: 99%

“…In the case of metals with large differences in the values of Δ E 0 (Cu and Ni [ 64 ], Cu and Pt [ 65 ], Pd and Fe [ 66 ]), an advanced reduction of more electrodegradable metal is observed. For example, during the sonoelectrochemical synthesis of Cu-Pt nanopowders [ 65 ], part of the reduced copper acts as a sacrificial metal to reduce platinum (equation ( 12 )). This allows synthesizing the Cu@PtNPs.…”

Section: Sonoelectrochemical Synthesis Of Metallic Nanoparticlesmentioning

confidence: 99%

“…In the sonoelectrochemical syntheses of M 1 M 2 NPs described in [ 60 , 61 , 63 , 65 – 68 ], preferably the sizes of several nanometers are obtained. This is facilitated by the factor of alternate reduction of metals M 1 and M 2 , that is, the deposition of each of them on a foreign surface.…”

Section: Sonoelectrochemical Synthesis Of Metallic Nanoparticlesmentioning

confidence: 99%

“…Also, sonoelectrochemical techniques are effective in obtaining the bimetallic nanoparticles (M 1 M 2 NPs) and provide the controlled composition of binary systems. For example, such a method can be used for the synthesis of M 1 M 2 NPs containing the components characterized by close values of standard electrode potentials (Fe, Co, Ni [ 56 , 60 – 62 ]) as well as nanosystems which significantly are differed in the values of E 0 (Fe and Cr [ 63 ], Cu and Ni [ 64 ], Cu and Pt [ 65 ], Pd and Fe [ 66 ], Au and Ag [ 66 ]). Moreover, applying this technique, it is possible to control the size of nanoparticles during the synthesis ( Table 2 ).…”

Section: Introductionmentioning

confidence: 99%

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“Green” Synthesis of Metallic Nanoparticles by Sonoelectrochemical and Sonogalvanic Replacement Methods

Кuntyi

Zozulya

Kytsya

2021

Bioinorganic Chemistry and Applications

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The main features of the “green” synthesis of metallic nanoparticles (MNPs) by the sonoelectrochemical methods are manufacturability, environmental friendliness, and the possibility of controlling the geometry of the forming particles. The electrochemical reduction technique allows efficiently designing the metal nanoparticles and provides the control of the content of components of bimetallic nanoparticles, as well as minimizing the number of precursors in working solutions. Due to the generation of turbulence, microjets, and shock waves, ultrasound increases mass transfer and formation of radicals in aqueous solutions and, accordingly, accelerates the processes of nucleation and growth of MNPs. Therefore, this hybrid method, which combines electrolysis and ultrasound, has attracted the interest of researchers in the last two decades as one of the most promising techniques. The present work presents a short analysis of the reference literature on sonoelectrochemical synthesis of metallic and bimetallic nanoparticles. The main factors influencing the geometry of nanoparticles and their size distribution are analyzed. The use of pulsed ultrasound and pulsed current supply during sonoelectrochemical synthesis is especially effective in designing MNPs. Emphasis is placed on the role of surfactants in the formation of MNPs and sacrificial anodes in providing the algorithm: “anodic dissolution-electrochemical reduction of metal-nucleation and formation of МNPs.” It is noted that ultrasound allows synthesizing the MNPs and M1M2NPs during the galvanic replacement, and an analogy of the formation of nanoparticles by sonogalvanic replacement and sonoelectrochemical method is shown.

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