An intelligent superhydrophobic absorbent with electrothermal conversion performance for effective high-viscosity oil removal and oil–water separation

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2022-10-12 DOI:10.1007/s10853-022-07805-5

Xuedan Zhu, Yajie Pang, Jinmei He, Yaxin Wu, Jianwei Ge, Lei Shen, Jie Yang, Mengnan Qu

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引用次数: 1

Abstract

Functionalized superwetting materials that are able to deal with the contamination problems of industrial and domestic oily wastewater are urgently demanded in the field of oil–water separation. In this work, we fabricated superhydrophobic absorbent with excellent electrothermal conversion performance through the liquid-phase reduction and hierarchically assemble methods. The adhesive layer of poly-dopamine (PDA), Cu/carbon microspheres composites (Cu/CMSs) and the fluoride-free hydrophobic reagents were successively assembled on the absorbent cotton to obtain the intelligent absorbent with excellent superhydrophobicity (WCA = 154°), satisfactory oil–water separation efficiency (> 98.3%) and high oil absorption capacity (12–20 g/g). Surprisingly, this intelligent absorbent displayed an excellent electrothermal conversion capacity, which provided the basis for the collection of high-viscosity oil and the low-melting solid oil. On the basis of the excellent electrothermal conversion performance, it also could be utilized as a filter to effectively realize the continuous separation process of high-viscosity crude oil/water mixture under low-voltage conditions. Therefore, this intelligent absorbent possesses broad application prospects in high-viscosity oil–water separation, oily wastewater treatment, oil spill cleaning, crude oil extraction, petrochemicals and other fields.

Graphical Abstract

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具有电热转化性能的智能超疏水吸附剂，可有效去除高粘度油和油水分离

油水分离领域迫切需要能处理工业和生活含油废水污染问题的功能化超湿材料。本文采用液相还原和分层组装的方法制备了具有优良电热转化性能的超疏水吸附剂。将聚多巴胺(PDA)、铜/碳微球复合材料(Cu/ cms)和无氟疏水试剂的粘接层依次组装在吸水棉上，得到了超疏水性优异(WCA = 154°)、油水分离效率满意(> 98.3%)、吸油能力高(12-20 g/g)的智能吸附剂。令人惊讶的是，这种智能吸附剂表现出优异的电热转化能力，为高粘度油和低熔点固体油的收集提供了基础。在具有优良电热转化性能的基础上，还可作为过滤器，在低压条件下有效实现高粘度原油/水混合物的连续分离过程。因此，该智能吸附剂在高粘度油水分离、含油废水处理、溢油清洗、原油开采、石化等领域具有广阔的应用前景。图形抽象

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.