Precipitation of silver particles with controlled morphologies from aqueous solutions

Wang, Limin; Andreassen, Jens‐Petter; Ucar, Seniz

doi:10.1039/c9ce01601e

Cited by 4 publications

(2 citation statements)

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“…For example, the morphology of Ag NPs was altered by changing the pH of the reaction solution. 19 Previous research on metal tellurates has predominantly focused on condensed matter physics, specifically the magnetic properties resulting from the presence of magnetic elements (such as Ni, Co, Mn, and Cu, all of which possess free electrons in their d orbital). Unfortunately, the intrinsic characteristics of nano-Te, such as its higher electronic conductivity and chalcogen nature, have been largely overlooked.…”

Section: Introductionmentioning

confidence: 99%

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Nickel Tellurate Nanorods and Nanoparticles for the Oxygen Evolution Reaction

Singh,

Veijola-Kara,

Rani

et al. 2024

ACS Appl. Nano Mater.

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Materials that lead to devices with tunable responses to the morphology are a potential opportunity. Tellurium, a growing material class possessing higher electronic conductivity, has recently been seen to exhibit the same in transition-metal-based complexes when combined toward wider energy applications. However, it has rarely been engineered and implemented for morphology-dependent low-dimensional (LD) structures for catalytic reactions. Herein, for the first time, we provide a novel approach for designing dimension variable nano nickel tellurate (NTO), such as nanorods (NRs), through pH assisted anisotropic transformation from the zero-dimensional amorphous counterpart. The resulting NRs have an average width of 5–30 nm and lengths in micrometers. Mechanistic studies show that the morphology of the final product is determined by the pH value used. In line with structural phase analysis, average core-level spectroscopic and local spectro-microscopic determinations confirm the formation of Ni2+- and Te4+/Te6+-based NTO NRs via electronic structure investigation and covalency. Our study not only provides a fresh approach to achieve varied NTO NRs but also offers insights into the growth reaction mechanisms of anisotropic transformation. The proposed facile design scheme can be optimized to synthesize any nanotellurates with morphological purity to promote the catalytic reactions through low-dimensional activity. As an example, these samples were tested for the oxygen evolution reaction.

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Section: Introductionmentioning

confidence: 99%

“…Similarly, a simpler way to modify the morphology of nanostructures is by employing different pH ranges during the synthesis. For example, the morphology of Ag NPs was altered by changing the pH of the reaction solution …”

Section: Introductionmentioning

confidence: 99%