1231. The importance of chemical transformations of adsorbed molecules for corrosion inhibition : mercaptobenzimidazoles on copperAnton Kokalj, Erik Gregori, Barbara Kapun, Ingrid Milošev, 2025, original scientific article Abstract: This study investigates whether mercaptobenzimidazoles act as thiolates in inhibiting copper corrosion. To this end, we examined three mercaptobenzimidazole derivatives — 2-mercaptobenzimidazole (SH-BimH), 2-mercapto-1-methylbenzimidazole (SH-BimMe), and 2-(methylthio)benzimidazole (Me-S-BimH) — as corrosion inhibitors for copper in 3 wt% NaCl solution using a combined experimental and computational approach. Me-S-BimH has a thiol group (single bondSH) replaced by a methylthio group (single bondSCH ), which should prevent the formation of surface thiolates. In contrast, SH-BimMe has the same molecular formula as Me-S-BimH, but its methyl group does not cap the thiol group. Corrosion experiments reveal that after 1 h of immersion, Me-S-BimH is considerably less effective than SH-BimH and SH-BimMe at inhibiting copper corrosion. However, after 100 h of immersion, Me-S-BimH performs comparably to SH-BimH and SH-BimMe. This delayed effectiveness suggests that a molecular transformation activates Me-S-BimH over time. To explore this phenomenon, we performed a detailed DFT study of potential chemical transformations of adsorbed Me-S-BimH. Most transformations are exothermic, but only molecular deprotonation and Csingle bondS bond cleavage between the azole ring and the methylthio group exhibit sufficiently low activation barriers to occur at room temperature. Similar deprotonation and Csingle bondS bond cleavage reactions occur also for SH-BimH and SH-BimMe, leading to more strongly bound species than their intact molecular forms. Due to these transformations, Me-S-BimH and SH-BimH eventually result in the same strongly bound species, while SH-BimMe forms an analogous species. These findings may explain why, over time, all three compounds exhibit similar corrosion inhibition characteristics, and highlight the importance of chemical transformations of adsorbed molecules in corrosion inhibition.
Keywords: copper, corrosion inhibition, electrochemical measurements
Published in DiRROS: 25.08.2025; Views: 331; Downloads: 181
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1232. Development of ferrite-content control process for 316LN austenitic stainless steel for liquid-hydrogen storage based on high-flux preparationXin Ouyang, Xuemin Wang, Chenxi Liu, Mengnan Xing, Yunfeng Bai, Xinming Hu, 2025, original scientific article Keywords: high-throughput preparation, austenitic stainless steel, d-ferrite, sensitization heat treatment, galvanic corrosion
Published in DiRROS: 22.08.2025; Views: 417; Downloads: 203
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1233. Modeling the microstructure evolution during the combined process of drawing with cryogenic coolingIrina Volokitina, Evgeniy Panin, Tatyana Fedorova, Bolat Makhmutov, Zoja Gelmanova, 2025, original scientific article Keywords: modeling, microstructure evolution, drawing, cryogenic cooling
Published in DiRROS: 22.08.2025; Views: 369; Downloads: 177
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1234. Engineering Ru@Ir core–shell nanoparticles on titanium oxynitride–graphene support for a highly active and durable pH-universal hydrogen evolution reactionAleksandra S. Popović, Ivan Marić, Marjan Bele, Ervin Rems, Matej Huš, Luka Pavko, Francisco Ruiz-Zepeda, Lazar Bijelić, Branimir Grgur, Nejc Hodnik, Milutin Smiljanić, 2025, original scientific article Published in DiRROS: 22.08.2025; Views: 444; Downloads: 254
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1235. A coupled fluid-granular approach to modelling powder stream in directed energy depositionTijan Mede, Michael Mallon, Bruno Chareyre, Matjaž Godec, 2024, published scientific conference contribution Keywords: Directed Energy Deposition, powder stream, DEM, CFD, coupled simulation
Published in DiRROS: 22.08.2025; Views: 390; Downloads: 176
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1236. Unveiling the impact of synthesis routes on water and ethanol sorption performance of ZIF-71 and ZIF-93Ciara Susan Byrne, Katja Vodlan, Connor Hewson, Paul Iacomi, Amalija Golobič, Nataša Zabukovec Logar, 2025, original scientific article Keywords: materials, metallic materials, organic materials, microporosity
Published in DiRROS: 22.08.2025; Views: 453; Downloads: 166
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1238. Performance and stability of PtCo alloy catalysts in high-temperature polymer electrolyte membrane fuel cellsVojtech Domin, Martin Prokop, Tomas Bystron, Matija Gatalo, Luka Pavko, Nejc Hodnik, Bruna Ferreira Gomes, Carlos Manuel Silva Lobo, Carl Eric Hartwig, Christina Roth, Martin Paidar, Karel Bouzek, 2025, original scientific article Published in DiRROS: 22.08.2025; Views: 437; Downloads: 191
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1239. Cytokine release syndrome in non- small cell lung cancer patient receiving immune checkpoint inhibitors : a case reportAna Geltar, Urška Janžič, 2025, original scientific article Abstract: Cytokine release syndrome (CRS) is a well-described immune-related adverse event following chimeric antigen receptor T-cell therapy (CAR-T) but has rarely been reported following therapy with immune checkpoint inhibitors (ICI).
We present a clinical case of severe CRS after ICI therapy for advanced non-small-cell lung cancer (NSCLC). After the third cycle of ipilimumab and nivolumab the patient presented with fever, hypotension and somnolence, leading to acute respiratory failure, acute kidney and hepatic failure, capillary leak syndrome, requiring ICU (intensive care unit) care. She recovered after receiving tocilizumab and steroid therapy.
Subsequently, we found 17 clinical cases of advanced NSCLC patients in peer review, experiencing CRS as an adverse event of treatment with ICI. We review those cases in detail and compare the similarities and outcomes.
Conclusion: CRS is a serious, life-threatening complication that is rare after ICI therapy for solid cancers but becoming increasingly frequent since ICI therapies are broadening indications. When presented with clinical symptoms, considering CRS is crucial, as early recognition is key to timely intervention and favorable outcome for the patient.
Keywords: on-small-cell lung cancer, immune checkpoint inhibitors, cytokine release syndrome, immune- related adverse events, case report
Published in DiRROS: 22.08.2025; Views: 376; Downloads: 192
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