Fe<sub>3</sub>O<sub>4</sub>/PDMS modified collagen sponge and its oil-water separation performance

GUO Chenchen; ZHANG Yunlong; WANG Yu; DING Cuicui; HUANG Liulian; CHEN Lihui; ZHANG Min

doi:10.13801/j.cnki.fhclxb.20220506.001

Volume 39 Issue 10

Aug. 2022

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GUO Chenchen, ZHANG Yunlong, WANG Yu, et al. Fe3O4/PDMS modified collagen sponge and its oil-water separation performance[J]. Acta Materiae Compositae Sinica, 2022, 39(10): 4652-4663. doi: 10.13801/j.cnki.fhclxb.20220506.001

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GUO Chenchen, ZHANG Yunlong, WANG Yu, et al. Fe₃O₄/PDMS modified collagen sponge and its oil-water separation performance[J]. Acta Materiae Compositae Sinica, 2022, 39(10): 4652-4663. doi: 10.13801/j.cnki.fhclxb.20220506.001

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Fe₃O₄/PDMS modified collagen sponge and its oil-water separation performance

doi: 10.13801/j.cnki.fhclxb.20220506.001

1.
College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
2.
College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350118, China

Received Date: 2022-02-28
Accepted Date: 2022-04-23
Rev Recd Date: 2022-04-16

Available Online: 2022-05-07

Publish Date: 2022-08-22

Abstract

Abstract

In order to develop a multi-functional oil-water separation sponge that is rich in raw materials, environmentally friendly, easy to operate in complex environment, and of good reusability, superhydrophobic collagen-based composite sponge (Fe₃O₄/PDMS-COL) was prepared by impregnating collagen sponge with polydimethylsiloxane (PDMS)/ferroferric oxide nanoparticles (Fe₃O₄). The changes of chemical structure and microstructure after modification were characterized, and the oil-water separation performance was studied. According to the measurement of contact angle, when the concentration of collagen (COL) is 10 mg/mL and the concentration of PDMS is 15vol%, the water contact angle of the composite sponge reaches 150.3°. The results from FTIR, XPS, XRD and TG show that Fe₃O₄/PDMS compounds with collagen sponge successfully. FE-SEM observation shows that the addition of Fe₃O₄ nanoparticles construct rough surface structures effectively. Fe₃O₄/PDMS-COL can adsorb a variety of oil phases, including benzene, n-hexane, ethyl acetate, vacuum pump oil, peanut oil, among which the adsorption capacity (47 g/g) toward ethyl acetate is the highest, meanwhile the separation efficiency towards various oil phases reaches no less than 99%. After recycling for 20 times for absorbing benzene, both of the contact angle and magnetism of the sponge do not reduce significantly. Moreover, Fe₃O₄/PDMS-COL has a desirable emulsion separation ability and can effectively separate oil-in-water emulsion. Oil-water separation experiments were carried out in various scenarios under the action of external magnetic field, demonstrating the favourable magnetic responsiveness and manipulation. In addition, Fe₃O₄/PDMS-COL exhibits a good flame retardant performance. Furthermore, Fe₃O₄/PDMS-COL possesses an excellent separation capacity toward solid oil/water system in a complex environment, due to its near infrared photothermal effect.
- collagen,
- sponge,
- water pollutants,
- polydimethylsiloxane,
- magnetic field effects-control,
- photothermal conversion
Long Abstrsct
Innovation Points

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References(28)

References

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