Precise stepwise recovery of platinum group metals from high-level liquid wastes based on SDB polymer-modified SiO<sub>2</sub>
Kun Wu, Shunyan Ning, Xiangbiao Yin, Sizhi Xu, Yilai Zhong, Zengyuan Li, Lifeng Chen, Mohammed F. Hamza, Toyohisa Fujita, Yuezhou Wei
Abstract
to maintain charge balance. The specific distribution of elements within the adsorbents and the changes in valence state were analyzed using depth-profiling XPS. Both depth-profiling XPS results and slope analysis revealed that the complex of dNbpy and PGMs is a 1 : 1 coordination structure. Overall, this work fills the gap that PGMs cannot be effectively separated and enriched from HLLW.
Topics & Concepts
Platinum groupAdsorptionX-ray photoelectron spectroscopyMesoporous materialPlatinumMesoporous silicaDesorptionChemistryMaterials scienceChemical engineeringCatalysisPhysical chemistryOrganic chemistryEngineeringExtraction and Separation ProcessesRecycling and Waste Management Techniques