Synthesis and Characterization of Sn/Ag Nanoparticle Composite as Electro-Catalyst for Fuel Cell

The perovskite structure of La0.7Pb0.3MnO3 has been investigated. The sample has been prepared using the solid-state method. The structural analysis of the sample was carried out by using X-ray diffraction (XRD). The Rietveld refinement technique was applied to refine and determine the structural parameters of the sample. The XRD analysis shows that the compound exhibits a single phase and is crystalized in a rhombohedral structure with a space group of R-3c. The tolerance factor of the sample was calculated to determine the stability of the structure. The visualisation of the sample structure using VESTA software indicates the formation of the MnO6 octahedral structure. The FTIR revealed the absorption band of the sample is around 496 cm-1, corresponding with the stretching vibration of the Mn-O bond. The AC susceptibility and Vibrating-sample Magnetometer (VSM) were done to study the magnetic properties of the sample and confirm the transition from ferromagnetic (FM) to paramagnetic (PM) at 298K with a maximum value of magnetization of 37.77 emu/g.

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“…The calculation of the crystalline size of the sample was carried out by utilising Scherrer equation [11], as expressed in Eq. ( 2):…”

Section: Crystal Structurementioning

confidence: 99%

The Structural and Magnetic Transition Behaviour Analysis of La0.7Pb0.3MnO3 Perovskite-Type Manganites

Zainuddin

Rahim

Mohamed

2023

ARASET

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“…Two strategies for protecting these Sn nanoparticles have been reported. One is to cover the nanoparticles with a “hard” shell of low-reactivity materials (e.g., TiO 2 /carbon, inert metals). − Another is polymeric capping agents such as poly( N -vinylpyrrolidone) (PVP) can be used. , “Hard” shells formed on Sn nanoparticles usually require complex processing with low yields. Moreover, the “hard” cover also harms the sintering behavior of Sn nanoparticles. , In contrast, using long-chain polymers as capping agents usually enables the formation of protected nanoparticles through one-step initial complexation of precursors and subsequent adsorption on the nanoparticle surface, resulting in the adequate protection of nanoparticles. , In addition, these organics can be easily removed by heating in an inert atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Citrate-Capped Sn Nanoparticles with Excellent Oxidation Resistance for High-Performance Electrically Conductive Adhesives

Cao

Chen

Jiang

et al. 2023

ACS Appl. Electron. Mater.

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Tin (Sn) metallic material is one of the best-known metals and has been extensively studied due to its ease of processing, low melting point, and low cost. However, it is still challenging to synthesize high-processing performance and antioxidant Sn nanoparticles with tunable sizes. This research reported a facile, easy-to-scale-up polyol-mediated synthesis of Sn nanoparticles assisted by sodium citrates as a capping agent. The presence of citrate capping facilitated uniform nucleation of Sn nanoparticles and enhanced their antioxidant capacity and dispersion properties. These nanoparticles can remain stable against oxidation for more than 270 days in an ambient atmosphere, even under continuous heating at 200 °C for over 12 h. The citrate capping also inhibits interparticle agglomeration and allows the preparation of high-quality suspensions in water and many conventional organics. Moreover, efficient size tuning over a wide range (60 nm−1 μm) can be achieved simply by changing the Sn 2+ precursor concentrations. The above-mentioned antioxidant capacity and processability allow them to combine with silver flakes in thermosetting epoxy resin as complementary conductive fillers effectively, creating conductive pathways among the silver flakes to obtain high-performance electrically conductive adhesives (ECAs). By adding Sn nanoparticles as complementary conductive fillers, the resistivity of the ECAs can be reduced to 1/ 6000 of that of the ECAs filled with only the same mass ratio of silver flakes, exhibiting its great potential in future electronics.

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Synthesis and Characterization of Sn/Ag Nanoparticle Composite as Electro-Catalyst for Fuel Cell

Cited by 2 publications

References 31 publications

The Structural and Magnetic Transition Behaviour Analysis of La0.7Pb0.3MnO3 Perovskite-Type Manganites

The Structural and Magnetic Transition Behaviour Analysis of La0.7Pb0.3MnO3 Perovskite-Type Manganites

Synthesis of Citrate-Capped Sn Nanoparticles with Excellent Oxidation Resistance for High-Performance Electrically Conductive Adhesives

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