The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.
Versatile Fabrication of Ultralight Magnetic Foams and Application for Oil–Water Separation
Abstract
Ultralow-density (<10 mg cm(-3)) materials have many important technological applications; however, most of them were fabricated using either expensive materials or complicated procedures. In this study, ultralight magnetic Fe2O3/C, Co/C, and Ni/C foams (with a density <5 mg cm(-3)) were fabricated on the centimeter scale by pyrolyzing commercial polyurethane sponge grafted with polyelectrolyte layers based on the corresponding metal acrylate at 400 °C. The ultralight foams consisted of 3D interconnected hollow tubes that have a diameter of micrometer and nanoscale wall thickness, forming hierarchical structures from macroscopic to nanometer length scales. More interesting was that the wall thickness and morphology of the microtubes could be tuned by controlling the concentrations of acrylic acid and metallic cations. After modification with low-surface-energy polysiloxane, the ultralight foams showed superhydrophobicity and superoleophilicity, which quickly and selectively absorbed a variety of oils from a polluted water surface under magnetic field. The oil absorption capacity reached 100 times of the foams' own weight, exhibiting one of the highest values among existing absorptive counterparts. By controlling the composition and conformation of the grafted polyelectrolyte layers, the present approach is extendable to fabricate a variety of ultralow-density materials desirable for absorptive materials, electrode materials, catalyst supports, etc.
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Metadata
- Authors
- Chen, N., & Pan, Q.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-07-25
- Volume
- 7
- Issue
- 8
- Pages
- 6875-6883
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2327460157
- Cited by
- 331
- References
- 36
- FWCI
- 16.44
- Type
- journal article
- Language
- en
- Open access
- closed
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