Selective capture of palladium(II) from highly acidic solution by proline-valinol amide functionalized silica nanoparticles

Li, Hao; Wu, Fan; Pan, Yang; Zhang, Yuting; Pleixats, Roser; Pan, Jianming

doi:10.1016/j.colsurfa.2022.129374

“…PGMs can be trapped selectively to solid media that usually consists of inorganic (SiO 2 , dichalcogenides), metal–organic framework and polymeric and biomass derived[ 80 , 81 , 82 , 83 , 84 , 85 ] (Table 1 , entries 1–6) solid substrate with (tethered) ligand moieties. Functionalities are designed to specifically bind to one or more PGM species and absorb them from the multi‐metal containing aqueous solutions.…”

Section: Platinum Group Metalsmentioning

confidence: 99%

Sustainable and Selective Modern Methods of Noble Metal Recycling

Zupanc

¹

,

Install

²

,

Jereb

³

et al. 2022

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Noble metals exhibit broad arrange of applications in industry and several aspects of human life which are becoming more and more prevalent in modern times. Due to their limited sources and constantly and consistently expanding demand, recycling of secondary and waste materials must accompany the traditional mineral extractions. This Minireview covers the most recent solvometallurgical developments in regeneration of Pd, Pt, Rh, Ru, Ir, Os, Ag and Au with emphasis on sustainability and selectivity. Processing—by selective oxidative dissolution, reductive precipitation, solvent extraction, co‐precipitation, membrane transfer and trapping to solid media—of eligible multi‐metal substrates for recycling from waste printed circuit boards to end‐of‐life automotive catalysts are discussed. Outlook for possible future direction for noble metal recycling is proposed with emphasis on sustainable approaches.

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“…PGMs can be trapped selectively to solid media that usually consists of inorganic (SiO 2 , dichalcogenides), metal-organic framework and polymeric and biomass derived [80][81][82][83][84][85] (Table 1, entries 1-6) solid substrate with (tethered) ligand moieties. Functionalities are designed to specifically bind to one or more PGM species and absorb them from the multimetal containing aqueous solutions.…”

Section: Selective Trappingmentioning

confidence: 99%

Sustainable and Selective Modern Methods of Noble Metal Recycling

Zupanc

¹

,

Install

²

,

Jereb

³

et al. 2022

View full text Add to dashboard Cite

Noble metals exhibit broad arrange of applications in industry and several aspects of human life which are becoming more and more prevalent in modern times. Due to their limited sources and constantly and consistently expanding demand, recycling of secondary and waste materials must accompany the traditional mineral extractions. This Minireview covers the most recent solvometallurgical developments in regeneration of Pd, Pt, Rh, Ru, Ir, Os, Ag and Au with emphasis on sustainability and selectivity. Processing—by selective oxidative dissolution, reductive precipitation, solvent extraction, co‐precipitation, membrane transfer and trapping to solid media—of eligible multi‐metal substrates for recycling from waste printed circuit boards to end‐of‐life automotive catalysts are discussed. Outlook for possible future direction for noble metal recycling is proposed with emphasis on sustainable approaches.

show abstract