Topic
Cupferron
About: Cupferron is a research topic. Over the lifetime, 367 publications have been published within this topic receiving 4632 citations.
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TL;DR: The use of adsorptive stripping voltammetry (AdSV) for the determination of aluminium on a rotating-disc bismuth-film electrode (BiFE) was reported and the figures of merit of the method were established.
91 citations
TL;DR: In this article, the accumulation of the uranium-cupferron complex at a preplated bismuth film electrode held at −0.30 V was used for stripping voltammetric measurements of trace uranium.
87 citations
TL;DR: In this paper, the reaction of hexamethyldisilazane (HMDS) with gallium cupferron or GaCl 3 under solvothermal conditions was shown to show a size-dependent photoluminescence band in the 260-320 nm region.
Abstract: GaN nanocrystals (see Figure) of hexagonal structure and varying diameters have been prepared by the reaction of hexamethyldisilazane (HMDS) with gallium cupferron or GaCl 3 under solvothermal conditions. The nanocrystals show a size-dependent photoluminescence band in the 260-320 nm region, characteristic of quantum confinement.
84 citations
TL;DR: In this paper, Maghemite γ-Fe2O3 nanoparticles from an FeIII-cup-ferron complex and spinel CoFe 2O4 nanoparticles starting from CoII-cupferron complexes and FeIII−cup-fraction complexes were taken in suitable proportions.
Abstract: The decomposition of single or multiple transition metal cupferron complexes in organic solvents under solvothermal conditions and in the presence of long chain amines yields the corresponding oxide nanoparticles. The examples presented here are maghemite γ-Fe2O3 nanoparticles from an FeIII–cupferron complex and spinel CoFe2O4 nanoparticles starting from CoII–cupferron complex and FeIII–cupferron complex taken in suitable proportions. The nanoparticles are capped with n-octylamine or n-dodecylamine. The presence of amine in the reaction is found to be essential for the formation of the product. The magnetic behavior of pressed pellets of these nanoparticles is presented.
83 citations
TL;DR: In this article, the use of adsorptive stripping voltammetry (AdSV) for the trace determination of chromium on a rotating-disk bismuth-film electrode (BFE) was reported.
Abstract: This works reports the use of adsorptive stripping voltammetry (AdSV) for the trace determination of chromium on a rotating-disk bismuth-film electrode (BFE). During the reductive accumulation step, all the chromium species in the sample were reduced to Cr(III) which was complexed with cupferron and the complex was accumulated by adsorption on the surface of a preplated BFE. The stripping step was carried out by using a square-wave (SW) potential-time voltammetric signal. Electrochemical cleaning of the bismuth film was employed, enabling the same bismuth film to be used for a series of measurements in the presence of dissolved oxygen. The experimental variables as well as potential interferences were investigated and the figures of merit of the method were established. Using the selected conditions, the 3σ limit of detection for chromium was 100 ng L−1 (for 120 s of preconcentration) and the relative standard deviation was 3.6% at the 2 μg L−1 level (n=8). Finally, the method was applied to the determination of chromium in real samples with satisfactory results.
75 citations