“Several birds with one stone” strategy of pH/thermoresponsive flame-retardant/photothermal bactericidal oil-absorbing material for recovering complex spilled oil

Chen, Ya, Lin, Jing, Mersal, Gaber A.M., Zuo, Jianliang, Li, Jialin, Wang, Qiying, Feng, Yuhong, Liu, Jianwei, Liu, Zili, Wang, Bin, Xu, Bin and Guo, Zhanhu (2022) “Several birds with one stone” strategy of pH/thermoresponsive flame-retardant/photothermal bactericidal oil-absorbing material for recovering complex spilled oil. Journal of Materials Science and Technology, 128. pp. 82-97. ISSN 1005-0302

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Official URL: https://doi.org/10.1016/j.jmst.2022.05.002

Abstract

Although many material designs or strategic methods have been proposed for treating oil spills and oily wastewater, the complex oily state, dealing with the harsh operating conditions of oil–water separation (such as the recovery of viscous spilled crude oil, bacteria-containing oily wastewater, and removal of spilled oil under fire), and the autorecycling of oil and absorption materials remain a great challenge. This paper proposes an ingenious design strategy of “several birds with one stone” to prepare pH/thermoresponsive flame-retardant/photothermal bactericidal P-Fe3O4-polydopamine (PDA)@ melamine–formaldehyde (MF) foams. This design makes the foams remarkably effective in the recovery of spilled viscous crude oil as well as in the separation of bacteria-containing oily emulsions, particularly for instant fire extinguishing by magnetically controlled oil absorption as well as for fire alarms. The photothermal effect and pH response induce a change in the surface wettability of the foams, facilitating excellent autoadsorption/desorption of the spilled oil. The photothermal bactericidal activity and fouling resistance of the foam are beneficial to the separation of bacteria-containing oily wastewater. Outstanding flame-retardant properties and maneuverable magnetic control enable the foam to rapidly recover the spilled oil in a large range of fires, extinguish fires instantly, and facilitate early fire warning. The proposed strategy is expected to inspire further research on treating oil spills under complex conditions.

Item Type: Article
Additional Information: Funding information: This work was financially supported by the National Natural Science Foundation of China (No. 22078077) and the National Science Foundation of Guangdong Province (No. 2021A1515010078). The authors also acknowledge the financial support of Taif University Researchers Supporting Project (No. TURSP-2020/14), Taif University, Taif, Saudi Arabia.
Uncontrolled Keywords: Oil-absorbing material, pH-responsive, Thermoresponsive, Photothermal, Bactericidal, Fire warning
Subjects: F200 Materials Science
H800 Chemical, Process and Energy Engineering
H900 Others in Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 17 May 2022 10:48
Last Modified: 01 Jun 2022 14:45
URI: http://nrl.northumbria.ac.uk/id/eprint/49141

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