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High-Content Hydroxyapatite Carbon Composites for the Electrochemical Detection of Heavy Metal Cations in Water

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#Carbon Sequestration #Industrial sector

Publications - ISI Article

High-Content Hydroxyapatite Carbon Composites for the Electrochemical Detection of Heavy Metal Cations in Water

High content (92%) nanostructured hydroxyapatite (Hap), adsorbing heavy metal cations, and the good electrical conductivity of high-surface carbon materials were here combined.

The great performance of nanostructured hydroxyapatite (Hap) in adsorbing heavy metal cations with the good electrical conductivity of high-surface carbon materials was here combined for the crafting of high-content hydroxyapatite electrodes (Hap 84–96 wt.%) endowed with the synergistic capability of detection and adsorption of heavy metal cations by water solutions.

 

To improve the sustainability of the sensor, a mesoporous carbon (derivable by bio-waste) was selected as scaffold for depositing Hap by simply co-precipitation. The composite with 92 wt.% of Hap, which exhibited ca. 1:1 ratio between the exposed area of Hap and carbon (by Brunauer- Emmett-Teller method), invariably showed an average stripping oxidation peak intensity of ca. 250 μAcm2 e 150 μAcm2 su una soluzione di 50 μM Pb2+ e Cu2+ solution, respectively.

 

Control experiments showed that the above sensor outperformed the sensibility of two low-content Hap electrodes (4 and 8 wt.%), epresentative of the best performing Hap-carbon composites available in literature.

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Rif.RSE​

23002908

Destination​

ChemElectroChem

Publication Date

16 January 2023

Authors​

M. Magni, D. Sironi, S. Trasatti, M. Ferri, S. Campisi, A. Gervasini(Università degli Studi di Milano), M. Papacchini (INAIL Settore Ricerca), P. Cristiani (RSE S.p.A.)

Publication Type

ISI Article

Projects

Hydrogen technologies (Hydrogen)

Target​

Industrial world Research

Related tags

#Carbon Sequestration #Industrial sector

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