期刊
ACS OMEGA
卷 5, 期 42, 页码 27188-27196出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c03255
关键词
-
资金
- National Natural Science Foundation of China [51764051, 51264038]
- Free exploration fund for academician [202005AA160002]
- Yunnan University's Research Innovation Fund for Graduate Students [2019z048]
- Key Natural Science Foundation of Kunming [2017-1-S-12305]
Mixed [C(8)bet]Br/[C(4)mim][NTf2] ionic liquids were used as a new extraction system to extract Pd(II) from multimetal-ion solutions. The separation factors K-Pd/M (M: Cu, Fe, Ni, Zn, Co) are greater than 10(3). Thiourea was found to be an effective stripping agent. After three cycles, the recovery efficiency was higher than 91.0%. Direct electrodeposition of palladium from the mixed ionic liquid phase was also studied. The Pd(II) complex in [C(8)bet]Br/[C(4)mim][NTf2] system was studied by cyclic voltammetry at 348 K. The results indicate the existence of three typ es of Pd(II) complex in the [C(8)bet]Br/[C(4)mim][NTf2] system, leading to three reductive waves. The reduction of Pd(II) to Pd(0) in this system is irreversible. A uniform black coating was obtained by constant-potential deposition at -1.7 V on a nickel foil, confirmed to be palladium metal by energy-dispersive spectrometry, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy analyses. After three cycles of continuous extraction-electrodeposition, over 90.0% of palladium was recovered.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据