Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 32, Pages 27416-27423Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b05878
Keywords
hierarchical pore ceramic; graphene; carbon nanobelt; superhydrophobicity; oil/water separation
Funding
- National Natural Science Foundation of China [51472184, 51672194]
- Key Program of Natural Science Foundation of Hubei Province, China [2017CFA004]
- Program for Innovative Teams of Outstanding Young and Middle-aged Researchers in the Higher Education Institutions of Hubei Province [T201602]
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Hydrophobic and oleophilic sorbents play an important role in the remediation processes of oil spills/leakages occurring globally from time to time. In this work, for the first time, lotus-seedpod-bioinspired 3D superhydrophobic diatomite porous ceramics with good mechanical strength and thermal stability were fabricated, using inexpensive porous diatomite as a substrate, and graphene/carbon nanobelts as modifiers. Thanks to the presence of graphene coating and in situ formed carbon nanobelts, the surface energy of the final porous ceramics was reduced and their surface roughness increased, conferring superhydrophobicity on them. As-prepared porous ceramics demonstrated 3-30 times higher adsorption capacity in oil/water separation than their conventional inorganic sorbent materials, and had compressive strength 70-270 times higher than that of a sponge/graphene-based sorbent material. The present work could additionally offer a new strategy for the treatment/recycle of waste plastics, the so-called white pollution.
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