| Naslov: | Flower-like stearic acid/rosehip oil self-assembled layers for copper corrosion protection : t |
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| Avtorji: | ID Fuchs-Godec, Regina (Avtor) |
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| Datoteke: |  ChemEngineering-10-00053-v2.pdf (6,87 MB)
MD5: 2B22FF20193465B5FFF585433013716C
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Članek v reviji |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | FKKT - Fakulteta za kemijo in kemijsko tehnologijo
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| Opis: | The corrosion protection of copper in acidic urban rain environments was studied using self-assembled hydrophobic layers (SAHLs) based on stearic acid (SA), with and without rosehip seed oil (RH). The limited durability of fatty acid-based self-assembled layers under acidic conditions was addressed by correlating surface wettability, morphology, and electrochemical behaviour. Contact angle and SEM analyses showed that SA alone forms a moderately hydrophobic but structurally irregular layer, whereas the addition of 2.0 wt.% RH produces a hierarchical micro/nanostructure with near-superhydrophobic characteristics (CA ≈ 149°). Electrochemical measurements in simulated acid rain solutions (pH 5, 3, and 1) revealed a strong pH dependence of protective performance. While SA-derived layers provided effective protection at pH 5, they deteriorated at lower pH due to protonation of carboxylate anchoring groups and electrolyte ingress. In contrast, SAHLs containing 2.0 wt.% RH maintained polarisation resistance in the MΩ cm2 range and inhibition efficiencies above 99% at pH 3, and remained effective even at pH 1. Long-term EIS results indicate a predominantly diffusion-controlled, barrier-type inhibition mechanism associated with defects sealing and interfacial reorganisation. Notably, the rosehip seed oil used is a commercially available, bio-based material with expired shelf life, highlighting the potential of waste-derived resources for sustainable corrosion protection. |
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| Ključne besede: | copper, rosehip seed oil, green inhibitors, self-assembled hydrophobic layers, long-term experiment |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Poslano v recenzijo: | 09.02.2026 |
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| Datum sprejetja članka: | 24.03.2026 |
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| Datum objave: | 21.04.2026 |
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| Založnik: | MDPI |
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| Leto izida: | 2026 |
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| Št. strani: | 27 str. |
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| Številčenje: | Vol. 10, no. 4, [article no.] 53 |
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| PID: | 20.500.12556/DKUM-97914  |
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| UDK: | 620.1/.2 |
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| COBISS.SI-ID: | 276309763 |
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| DOI: | 10.3390/chemengineering10040053 |
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| ISSN pri članku: | 2305-7084 |
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| Avtorske pravice: | © 2026 by the author
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| Datum objave v DKUM: | 24.04.2026 |
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| Število ogledov: | 410 |
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| Število prenosov: | 13 |
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| Metapodatki: |    |
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| Področja: | Ostalo
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