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Three-dimensional self-assembled reduced graphene oxide composite as a promising adsorbent for the collection of palladium (II) and platinum (IV) in a low concentration.
- Source :
-
Journal of the Iranian Chemical Society . Nov2023, Vol. 20 Issue 11, p2861-2870. 10p. - Publication Year :
- 2023
-
Abstract
- A three-dimensional reduced graphene oxide aerogel modified by sulfamic acid and ethylenediamine was prepared via one-step reduction self-assembly under atmospheric pressure within 90 °C heating constantly. The adsorption efficiency of palladium (II) was ~ 97.0% at pH 11 within 50 min by the prepared composite. While the composite exhibited adsorption for platinum (IV) at acid condition, giving a rising to an adsorption efficiency was 61.7% at pH 5. Only 25.8% adsorption efficiency of platinum (IV) was found at pH 11, and 17.0% adsorption efficiency of palladium (II) was obtained at pH 5. The adsorption capacity of the composite for palladium (II) was 80 μg mg−1 above, and the adsorption capacity of the composite for platinum (IV) was ~ 160 μg mg−1. The obtained palladium (II) and platinum (IV) can be eluted by urea and surfactant from the surface of the composite, respectively. Understanding the mechanism of the adsorption/desorption between palladium (II)/platinum (IV) and the composite, explored a promising way for recycling and enrichment of noble metal at a low concentration. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1735207X
- Volume :
- 20
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of the Iranian Chemical Society
- Publication Type :
- Academic Journal
- Accession number :
- 172842560
- Full Text :
- https://doi.org/10.1007/s13738-023-02882-y