Electrochemical recovery of low concentrated platinum (Pt) on nickel hexacyanoferrate nanoparticles film

Wang, Jixiang; Yang, Shengjiong; Long, Xinxin; Li, Zejiao; Tan, Jihua; Wang, Xinming; Chen, Rongzhi

doi:10.1016/j.jtice.2020.05.004

Cited by 8 publications

(1 citation statement)

References 49 publications

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“…When removing Pt(II) in the presence of Co(II), both at 1 ppm, the performance of Pt(II) removal increases up to ∼290 mg g −1 at −0.6 V versus SCE after 120 min, but simultaneous separation of Co 2+ occurs up to ∼60 mg g −1 . Pt(II) was in the anionic PtCl 4 2− form, and the authors suggested a two-step separation mechanism, with chemisorption of Pt(II) on NiHCF followed by reduction to Pt(0) ( Wang et al., 2020 ). Copper metal hexacyanoferrate nanoparticle films (CuHCF) were used as a platform for the selective removal of Co 2+ (1 mg L −1 ) from aqueous solution containing LiNO 3 (0.5–10.0 mg L −1 ).…”

Section: Electrochemical Separations For Selective Recoverymentioning

confidence: 99%

Electrochemical approaches for selective recovery of critical elements in hydrometallurgical processes of complex feedstocks

Kim¹,

Candeago²,

Rim³

et al. 2021

iScience

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Summary Critical minerals are essential for the ever-increasing urban and industrial activities in modern society. The shift to cost-efficient and ecofriendly urban mining can be an avenue to replace the traditional linear flow of virgin-mined materials. Electrochemical separation technologies provide a sustainable approach to metal recovery, through possible integration with renewable energy, the minimization of external chemical input, as well as reducing secondary pollution. In this review, recent advances in electrochemically mediated technologies for metal recovery are discussed, with a focus on rare earth elements and other key critical materials for the modern circular economy. Given the extreme heterogeneity of hydrometallurgically-derived media of complex feedstocks, we focus on the nature of molecular selectivity in various electrochemically assisted recovery techniques. Finally, we provide a perspective on the challenges and opportunities for process intensification in critical materials recycling, especially through combining electrochemical and hydrometallurgical separation steps.

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Section: Electrochemical Separations For Selective Recoverymentioning

confidence: 99%