作者:Lei Zhang, Xianhu Zha, Gui Zhang, Jincui Gu, Wei Zhang,Youju Huang,* Jiawei Zhang, and Tao Chen*
关键字:Hybrid Membrane,Oil/Water Emulsion Separation
论文来源:期刊
具体来源:J. Mater. Chem. A
发表时间:2018年
Owe to the ever-increasing demand on noble metals in modern industrial, the extraction of noble metals from ores and
electronic wastes has already been a significant topic. Conventional extraction means involving surfactant, organic solvents
and toxic extracting agents, suffer from complex heterogeneous separation and extraction operation as well as
environmental pollution. Herein, a new carbon nanotubes (CNTs) hybrid membrane modified with eco-friendly and
reductive polyacryloyl hydrazide (PAH) is reported, integrating extraction of noble metal ions with heterogeneous emulsion
separation. The hybrid membrane with underwater superoleophobic surface can achieve one-step preferential extraction
of noble metal ions during oil/water emulsion separation, greatly simplifying the extraction operation. The reductive
extraction yields nanoparticles loaded in-situ on CNTs, which allows to evaluate precisely recovery performances by
monitoring resistance variation of hybrid membrane. Furthermore, the extracted hybrid membrane can be recycled for
catalytic conversion of organic contaminants as well as emulsion separation. The multi-functional hybrid membrane realizes
comprehensively recovery of noble metal ions and heterogeneous separation for further recycling utilization, showing great
potential for practical application towards simple and integrated recycling of noble metals.