Mahira Bashri (Author), Sushil Kumar (Author), Pallab Bhandari (Author), Sasi Stephen (Author), Matthew J. O'Connor (Author), Safa Gaber (Author), Tina Škorjanc (Author), Matjaž Finšgar (Author), Gisha Elizabeth Luckachan (Author), Blaž Belec (Author)

Abstract

Global consumption and discharge of palladium (Pd) have raised environmental concerns but also present an opportunity for the sustainable recovery and reuse of this precious metal. Adsorption has proven to be an efficient method for the selective recovery of Pd from industrial wastewater. This study investigated a hydrazone-linked covalent organic framework (Tfpa-Od COF) as a potential material for the high-affinity adsorption of Pd2+ ions from wastewater, achieving a Kd value of 3.62 × 106 mL g–1. The electron-rich backbone of the COF contributes to its excellent selective removal efficiency (up to 100%) and adsorption capacity of 372.59 mg g–1. Furthermore, the Pd-adsorbed COF was evaluated as a sustainable catalyst for the Suzuki–Miyaura coupling reaction, demonstrating good catalytic conversion and recyclability. This work attempts to showcase a protocol for reusing waste palladium generated in water to fabricate heterogeneous catalysts and, thereby, promote the circular economy concept.

Keywords

covalent organic frameworks;sustainability;catalysis;palladium adsorption;water purification;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UNG - University of Nova Gorica
UDC: 54
COBISS: 204934403 Link will open in a new window
ISSN: 1944-8252
Views: 1404
Downloads: 10
Average score: 0 (0 votes)
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Other data

Pages: str. 17804-17812
Volume: ǂVol. ǂ17
Issue: ǂissue ǂ12
Chronology: 2025
DOI: 10.1021/acsami.4c07706
ID: 26352352