Effects of underlying substrates on the underwater oleophobicity of graphene oxide-phytic acid (GO-PA) coatings
The widespread presence of oil in aquatic environments due to indiscriminate disposal of oily wastewater and frequent oil spills has led to severe underwater oil adhesion issues. While underwater oleophobicity has received extensive research for its potential to create surfaces with ultralow oil adh...
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Elsevier
2025-03-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S259012302500221X |
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| author | Sue Lyn Tan Abraham Matthews Joshua Ee Von Lau |
| author_facet | Sue Lyn Tan Abraham Matthews Joshua Ee Von Lau |
| author_sort | Sue Lyn Tan |
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| description | The widespread presence of oil in aquatic environments due to indiscriminate disposal of oily wastewater and frequent oil spills has led to severe underwater oil adhesion issues. While underwater oleophobicity has received extensive research for its potential to create surfaces with ultralow oil adhesion underwater, there are still limited studies on the effects of underlying substrates on surface wettability. This study addresses this gap by exploring the wettability of graphene oxide-phytic acid (GO-PA) coatings on different substrates, which is crucial given the dependency of two-dimensional materials such as graphene oxide, on the underlying substrates due to their inherent lack of a bulk phase. The GO-PA coatings were applied on a variety of substrates, and their surface wettability was evaluated through contact angle measurements, surface energy calculations and adhesion force studies. Results showed that the underwater oleophobicity of GO-PA coated substrates was the lowest in stainless steel, followed by copper, polyvinylidene fluoride (PVDF) and carbon steel. The underwater oleophobicity was correlated to the increase in surface energy and surface roughness, accompanied by a reduction in the water de-wetting phenomenon at the contact region. Notably, carbon steel exhibiting the highest surface energy (72.8 mJ/m2) and surface roughness (average roughness of 146.0 nm), emerged as the most effective substrate for developing surfaces with superhydrophilicity (water contact angle of 0°) and underwater superoleophobicity (underwater oil contact angle of 162.5°). This research establishes a promising avenue for further developing modified GO coatings aimed at anti-oil applications such as oily wastewater treatment and wax prevention. |
| format | Article |
| id | doaj-art-78518afc4dc141518884ce5f87ef52b6 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
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| spelling | doaj-art-78518afc4dc141518884ce5f87ef52b62025-01-31T05:12:20ZengElsevierResults in Engineering2590-12302025-03-0125104133Effects of underlying substrates on the underwater oleophobicity of graphene oxide-phytic acid (GO-PA) coatingsSue Lyn Tan0Abraham Matthews Joshua1Ee Von Lau2School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, MalaysiaSchool of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, MalaysiaCorresponding author.; School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, MalaysiaThe widespread presence of oil in aquatic environments due to indiscriminate disposal of oily wastewater and frequent oil spills has led to severe underwater oil adhesion issues. While underwater oleophobicity has received extensive research for its potential to create surfaces with ultralow oil adhesion underwater, there are still limited studies on the effects of underlying substrates on surface wettability. This study addresses this gap by exploring the wettability of graphene oxide-phytic acid (GO-PA) coatings on different substrates, which is crucial given the dependency of two-dimensional materials such as graphene oxide, on the underlying substrates due to their inherent lack of a bulk phase. The GO-PA coatings were applied on a variety of substrates, and their surface wettability was evaluated through contact angle measurements, surface energy calculations and adhesion force studies. Results showed that the underwater oleophobicity of GO-PA coated substrates was the lowest in stainless steel, followed by copper, polyvinylidene fluoride (PVDF) and carbon steel. The underwater oleophobicity was correlated to the increase in surface energy and surface roughness, accompanied by a reduction in the water de-wetting phenomenon at the contact region. Notably, carbon steel exhibiting the highest surface energy (72.8 mJ/m2) and surface roughness (average roughness of 146.0 nm), emerged as the most effective substrate for developing surfaces with superhydrophilicity (water contact angle of 0°) and underwater superoleophobicity (underwater oil contact angle of 162.5°). This research establishes a promising avenue for further developing modified GO coatings aimed at anti-oil applications such as oily wastewater treatment and wax prevention.http://www.sciencedirect.com/science/article/pii/S259012302500221XUnderwater oleophobicGraphene oxideSurface energySurface roughnessAdhesion force |
| spellingShingle | Sue Lyn Tan Abraham Matthews Joshua Ee Von Lau Effects of underlying substrates on the underwater oleophobicity of graphene oxide-phytic acid (GO-PA) coatings Results in Engineering Underwater oleophobic Graphene oxide Surface energy Surface roughness Adhesion force |
| title | Effects of underlying substrates on the underwater oleophobicity of graphene oxide-phytic acid (GO-PA) coatings |
| title_full | Effects of underlying substrates on the underwater oleophobicity of graphene oxide-phytic acid (GO-PA) coatings |
| title_fullStr | Effects of underlying substrates on the underwater oleophobicity of graphene oxide-phytic acid (GO-PA) coatings |
| title_full_unstemmed | Effects of underlying substrates on the underwater oleophobicity of graphene oxide-phytic acid (GO-PA) coatings |
| title_short | Effects of underlying substrates on the underwater oleophobicity of graphene oxide-phytic acid (GO-PA) coatings |
| title_sort | effects of underlying substrates on the underwater oleophobicity of graphene oxide phytic acid go pa coatings |
| topic | Underwater oleophobic Graphene oxide Surface energy Surface roughness Adhesion force |
| url | http://www.sciencedirect.com/science/article/pii/S259012302500221X |
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