Issue 33, 2008
From the journal:

Journal of Materials Chemistry

Removal of palladium ions from aqueous systems by chemically modified cysteine carbon powder

Poobalasingam Abiman,a   Gregory G. Wildgoose,a   Alison Crossleyb  and  Richard G. Compton*a  

* Corresponding authors

a Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, UK
E-mail: richard.compton@chem.ox.ac.uk
Fax: +44 (0)1865 275410
Tel: +44 (0)1865 275413

b Materials Department, University of Oxford, Parks Road, Oxford, UK

Abstract

L-Cysteine methyl ester modified graphite powder (Cyscarbon) was used as a material to remove palladium ions from aqueous media. Cheap graphite powders (2–20 μm in diameter) were surface functionalised with L-cysteine methyl ester. The removal of Pd(II) ions was studied as a function of concentration of Pd(II) ions, contact time with modified carbon and amount of modified carbon used. Determination of palladium ions was performed by adsorptive stripping voltammetry using a mercury nanodroplet array modified glassy carbon electrode. Dimethylglyoxime (DMG) was used as chelating agent for palladium. It was found that 1 g of Cyscarbon takes up 60 μM palladium ions from 25 mL of 100 μM palladium ion samples whilst the recovery experiment carried out by stirring the palladium–Cyscarbon with DMG gave a yield of 45% (optimised).

Graphical abstract: Removal of palladium ions from aqueous systems by chemically modified cysteine carbon powder

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Article information

DOI
https://doi.org/10.1039/B805804K
Article type
Paper
Submitted
07 Apr 2008
Accepted
06 Jun 2008
First published
14 Jul 2008

J. Mater. Chem., 2008,18, 3948-3953

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Removal of palladium ions from aqueous systems by chemically modified cysteine carbon powder

P. Abiman, G. G. Wildgoose, A. Crossley and R. G. Compton, J. Mater. Chem., 2008, 18, 3948 DOI: 10.1039/B805804K

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