1. Sustainable mercury monitoring using graphitic carbon nitride as a 2D binding layer in diffusive gradient thin filmsDmitrii Deev, Raghuraj S. Chouhan, Igor Živković, Ermira Begu, Ana Drinčić, Francisco Ruiz-Zepeda, Andraž Krajnc, Ivan Jerman, Roman Viter, Aleš Lapanje, Milena Horvat, 2026, izvirni znanstveni članek Povzetek: Mercury (Hg) is a highly toxic and persistent environmental pollutant whose accurate monitoring remains challenging due to limitations in existing diffusive gradients in thin films (DGT) binding materials, including insufficient selectivity, complex synthesis, and sustainability concerns. In this study, we report the first application of graphitic carbon nitride (GCN) nanosheets as a metal-free and sustainable binding material for Hg²⁺ monitoring in DGT systems, addressing key limitations of current approaches. Few-layer GCN nanosheets were synthesized via thermal polymerization followed by protonation-assisted exfoliation and comprehensively characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), atomic force microscopy (AFM), Raman spectroscopy, and scanning electron microscopy (SEM). These analyses confirmed the formation of a structurally stable, nitrogen-rich framework with abundant coordination sites. The GCN–agarose (AG–GCN) composite binding layer demonstrated high mercury binding efficiency (>90%) at environmentally relevant concentrations (2.5–10 ng/mL) and near-neutral pH, attributed to strong coordination between Hg²⁺ ions and electron-donating nitrogen sites within the heptazine structure. Compared to conventional DGT binding phases, the proposed system offers enhanced sustainability, metal-free composition, and strong affinity toward mercury, highlighting its potential for next-generation passive environmental monitoring and advanced nanomaterial-based sensing platforms.
Ključne besede: passive monitoring, graphitic carbon nitride nanosheets, adsorbent, mercury detection, nanosheets
Objavljeno v DiRROS: 04.05.2026; Ogledov: 219; Prenosov: 149
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2. Boosting copper biocidal activity by silver decoration and few-layer graphene in coatings on textile fibersDanaja Štular, Nigel Willy Van de Velde, Ana Drinčić, Polona Kogovšek, Arijana Filipić, Katja Fric, Barbara Simončič, Brigita Tomšič, Raghuraj S. Chouhan, Sivasambu Bohm, Suresh Kr. Verma, P.K. Panda, Ivan Jerman, 2023, izvirni znanstveni članek Povzetek: The outbreak of the Coronavirus disease 2019 (COVID-19) pandemic has highlighted the importance of developing antiviral surface coatings that are capable of repelling pathogens and neutralizing them through self-sanitizing properties. In this study, a novel coating design based on few-layer graphene (FLG) is proposed and silver-decorated micro copper flakes (CuMF) that exhibit both antibacterial and antiviral properties. The role of sacrificial anode surfaces and intrinsic graphene defects in enhancing the release of metal ions from CuMF embedded in water-based binders is investigated. In silico analysis is conducted to better understand the molecular interactions of pathogen-repelling species with bacterial or bacteriophage proteins. The results show that the optimal amount of CuMF/FLG in the coating leads to a significant reduction in bacterial growth, with reductions of 3.17 and 9.81 log for Staphylococcus aureus and Escherichia coli, respectively. The same coating also showed high antiviral efficacy, reducing bacteriophage phi6 by 5.53 log. The antiviral efficiency of the coating is find to be doubled compared to either micro copper flakes or few-layer graphene alone. This novel coating design is versatile and can be applied to various substrates, such as personal protective clothing and face masks, to provide biocidal activity against both bacterial and viral pathogens.
Ključne besede: antibacterial, antiviral, copper micro flakes, few-layer graphene, pathogen-repelling coating
Objavljeno v DiRROS: 16.12.2025; Ogledov: 389; Prenosov: 290
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3. Chemical recycling of flexible polyurethane foams by aminolysis to recover high-quality polyolsMaja Grdadolnik, Blaž Zdovc, Ana Drinčić, Özgün Can Önder, Petra Utroša, Susana Garcia Ramos, Enrique Dominguez Ramos, David Pahovnik, Ema Žagar, 2023, izvirni znanstveni članek Objavljeno v DiRROS: 28.08.2023; Ogledov: 1674; Prenosov: 1093
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5. Quantitative determination of PA6 and/or PA66 content in polyamide-containing wastesEma Žagar, Urška Češarek, Ana Drinčić, Simona Sitar, Igor Shlyapnikov, David Pahovnik, 2020, izvirni znanstveni članek Ključne besede: polymer waste, chemical recycling, microwave chemistry, polyamide content, liquid chromatography
Objavljeno v DiRROS: 29.07.2020; Ogledov: 3164; Prenosov: 2113
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