Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 15, Issue 31, Pages 38056-38067Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.3c07056
Keywords
superhydrophilic surface; underwater superoleophobicity; oil fouling; oil expelling; wearability
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A superhydrophilic/underwater superoleophobic surface (SUSS) with high wearability, weatherability, and durability was developed for the expulsion of fouled oil using water without a surfactant. This study provides a facile strategy for the rapid cleansing of oil-fouled pipes and tanks without using a detergent, lowering costs and environmental risks.
The reduction of oil fouling in pipes and tanks is essential for the oil storage and transportation industry. In this study, a superhydrophilic/underwater superoleophobic surface (SUSS) with high wearability, weatherability, and durability was developed using a facile two-step synthesis method and used to expel fouled oil from the surface using water without a surfactant. Some typical oils, including kerosene and white oil, can be spontaneously expelled by static water; however, rapeseed oil requires motive water for expulsion because of its high affinity for the SUSS. Different occurrences can be estimated based on a correlated parameter, phi(P-e), which is calculated using an introduced dimensionless number, P-e = sigma(LV)/u mu. A positive value of phi indicates the occurrence of fouled-oil expulsion by water replacement, whereas a negative value indicates no occurrence of this phenomenon. This study provides a facile strategy for the rapid cleansing of oil-fouled pipes and tanks without using a detergent, thereby lowering costs and environmental risks.
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