Bashri Mahira, Kumar Sushil, Bhandari Pallab, Stephen Sasi, O'Connor Matthew J, Gaber Safa, Škorjanc Tina, Finšgar Matjaž, Luckachan Gisha Elizabeth, Belec Blaž, Alhseinat Emad, Mukherjee Partha Sarathi, Shetty Dinesh
Department of Chemistry, Khalifa University of Science & Technology, Post Office Box 127788, Abu Dhabi, United Arab Emirates.
Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.
ACS Appl Mater Interfaces. 2025 Mar 26;17(12):17804-17812. doi: 10.1021/acsami.4c07706. Epub 2024 Aug 21.
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 ( COF) as a potential material for the high-affinity adsorption of Pd ions from wastewater, achieving a value of 3.62 × 10 mL g. 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. 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.
全球钯（Pd）的消耗和排放引发了环境问题，但也为这种贵金属的可持续回收和再利用提供了契机。吸附已被证明是从工业废水中选择性回收钯的有效方法。本研究考察了一种腙连接的共价有机框架（COF）作为从废水中高亲和力吸附钯离子的潜在材料，其吸附值达到3.62×10 mL g。COF富电子的骨架有助于其出色的选择性去除效率（高达100%）和372.59 mg g的吸附容量。此外，吸附钯的COF被评估为铃木-宫浦偶联反应的可持续催化剂，显示出良好的催化转化率和可回收性。这项工作试图展示一种将水中产生的废钯再利用以制备多相催化剂的方案，从而推动循环经济理念。
