Results 11 to 20 of about 122,908 (260)

Migration: A Neglected Potential Contribution of HCl-Oxidized Au(0)

open access: yesMolecules, 2023
In this study, the typical oxidation process of Au/C catalysts exposed to HCl is presented. Although the process violates the standard electrode potentials, the “oxidized” tendency of Au(0) species is analyzed.
Zilong Zhang   +4 more
doaj   +1 more source

A whole-cell biosensor for the detection of gold. [PDF]

open access: yesPLoS ONE, 2013
Geochemical exploration for gold (Au) is becoming increasingly important to the mining industry. Current processes for Au analyses require sampling materials to be taken from often remote localities.
Carla M Zammit   +8 more
doaj   +1 more source

Synthesis of Ionic Imprinted Membrane (IIM) Based on Sulfonated Polyeugenol for Selective Transport of Gold (III) Metal Ions from Motherboard Waste

open access: yesJurnal Kimia Sains dan Aplikasi, 2022
Ionic imprinted membrane (IIM) was successfully synthesized using sulfonated polyeugenol, a derivative of eugenol as a functional polymer, with PVA as a base membrane and PEGDE as a crosslinker.
Muhammad Cholid Djunaidi   +2 more
doaj   +1 more source

Gender and classifiers in concurrent systems: Refining the typology of nominal classification

open access: yesGlossa, 2017
Some languages have both gender and classifiers, contrary to what was once believed possible. We use these interesting languages as a unique window onto nominal classification.
Greville G. Corbett, Sebastian Fedden
doaj   +2 more sources

III. Coopération au développement [PDF]

open access: yesAnnuaire suisse de politique de développement, 1983
En 1981, la cooperation au developpement s’est ressentie en Suisse des coupes lineaires de 10 % pratiquees dans le budget de la Confederation. Le Parlement a decide de lui retirer encore une nouvelle tranche de 8 % pour 1982. Meme si le volume des fonds dont elle dispose est en legere augmentation par rapport au PNB, elle pietine et demeure en dessous ...
Hilar Stetter   +2 more
openaire   +1 more source

L-Arginine-Modified Silica for Adsorption of Gold(III)

open access: yesIndonesian Journal of Chemistry, 2015
In this research, L-arginine-modified silica (SiO2-Arg) with 3-glycidoxypropyl-trimethoxysilane (GPTMS) as the linking agent has been synthesized through sol gel process for adsorption of Au(III) in aqueous solution.
Sri Hastuti   +2 more
doaj   +1 more source

Complexes of oxamic acid with Au(III) and Rh(III)

open access: yesMonatshefte für Chemie - Chemical Monthly, 1982
The preparation and some properties of the deprotonated complexes of oxamic acid with Au(III) and Rh(III) are reported. On the basis of analytical results, conductometric measurements, magnetic moments and spectral data (IR and UV-visible), a square planar structure is proposed for K[AuL(OH)2] and octahedral for K3[RhL 3] 3H2O (whereLH2=oxamic acid).L ...
Kouinis, J. K.   +2 more
openaire   +2 more sources

In-Situ Ionic Imprinted Membrane (IIM) Synthesis Based on Acetic Polyeugenoxy Acetyl Tiophen Methanolate for Gold(III) Metal Ion Transports

open access: yesIndonesian Journal of Chemistry, 2020
In this research, Polyeugenoxy Acetyl Tiophen Methanolate (PEATM)-Au ionic imprinted membrane (IIM) was synthesized. IIM is a PEATM based membrane that has Au(III) ion molds.
Muhammad Cholid Djunaidi   +4 more
doaj   +1 more source

Quest for an intermolecular Au( iii )⋯Au( iii ) interaction between cyclometalated gold( iii ) cations

open access: yesChem. Sci., 2012
We reported our endeavour in the quest for an attractive metallophilic interaction between two cyclometalated Au(III) cations without a bridging ligand. Among the newly prepared gold(III) complexes, namely [Au(C^N^N)(C≡CC6H4-4-R)](PF6) [HC^N^N = 6-aryl-2,2′-bipyridine, R = H (1), Me (2), Ph (3), OMe (4), and NMe2 (5)], complex 5 is stable in solution ...
Chan, KT   +4 more
openaire   +3 more sources

Anodic Stripping Voltammetric Analysis of Trace Arsenic(III) on a Au-Stained Au Nanoparticles/Pyridine/Carboxylated Multiwalled Carbon Nanotubes/Glassy Carbon Electrode

open access: yesNanomaterials, 2022
A Au-stained Au nanoparticle (Aus)/pyridine (Py)/carboxylated multiwalled carbon nanotubes (C-MWCNTs)/glassy carbon electrode (GCE) was prepared for the sensitive analysis of As(III) by cast-coating of C-MWCNTs on a GCE, electroreduction of 4 ...
Yun Du   +6 more
doaj   +1 more source

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