Aleksandra Dimitrijević

Vinča Institute of Nuclear Sciences | VIN · Department of Physical Chemistry

This study investigates the impact of changing parameters on the photocatalytic degradation of carbofuran (CBF) using laser-treated TiO2 nanotube arrays on a Ti mesh under simulated sunlight irradiation and assessing toxicity during photocatalytic degradation. Various parameters, including the stirring effect, light intensity, initial CBF concentra...

Due to extensive food production, organophosphate pesticides (OPs) are widely utilized for crop protection, leading to their presence in the environment. The focus of this study was the design of an efficient aqueous biphasic system (ABS) strategy for OP removal, namely, malathion (MAL), azinphos-methyl (AZM), and chlorpyrifos (CHP) from water. Dif...

The consistent expansion of the lithium-ion battery (LIB) market, coupled with their relatively brief lifespan, necessitates the development of efficient and sustainable LIB recycling strategies. Recycling is crucial not only for the recovery of critical metals like Co(II) and Li(I) from the cathode material as a secondary resource but also from an...

Polyphenols are natural compounds with enhanced antioxidant properties. They are present in relatively high concentrations in fruit/vegetable by-products. Therefore, there is a need for the development of efficient and cost-effective methods for the separation and purification of these valuable compounds. Traditional extraction with organic solvent...

This study explores the use of a series of cholinium ionic liquids (ILs) or salts in combination with polypropylene glycol 400 to form aqueous biphasic systems (ABS) for extracting various polarity pesticides (dicamba, clomazone, pyraclostrobin, and deltamethrin) from water. We assessed five cholinium-based salting-out agents ([Ch][DHP], [Ch]Cl, [C...

Sage has been used in traditional medicine to prevent and treat many health problems. This study aimed to determine and compare the phytochemical composition and antioxidative activity of sage leaf extracts obtained with 50% methanol (50MSE) and 80% methanol (80MSE). We determined the total phenolic content (TPC), total tannin content (TTC), and to...

This study investigates tetrabutylphosphonium-based ionic liquids for food dye removal via extraction using aqueous biphasic systems with ammonium sulfate. Furthermore, these ionic liquids were used for activated carbon regeneration and employed for dye removal from the water as well. This dual approach achieved high extraction efficiencies (≈ 90%)...

The safety of drinking water is crucial for public health. Industrial and human activities have increased the use of heavy metals (cobalt, nickel, manganese) in water sources. These non-biodegradable, potentially carcinogenic metals pose serious health risks in drinking water. This study developed an efficient aqueous biphasic system (ABS) for remo...

Development of cost-effective, bi-functional carbon electrocatalysts via direct carbonization of ionic liquids (bis(cholinium) tetrachlorocobaltate(II) ([Ch]2[CoCl4]) and bis(1-butyl-3-methylimidazolium) tetrachlorocobaltate(II) ([Bmim]2[CoCl4])) is reported herein for the first time. Carbon electrocatalysts, dual-doped with cobalt and nitrogen, we...

Organophosphorus pesticides (OPs) are highly effective pesticides which usage accounts for approximately 30% of the pesticides used worldwide. However, overusing OPs in addition to their difficult degradation is threatening environmental and human health even at very low concentrations that are below detection limits of the standard analytical tech...

Unused/expired pharmaceuticals can be regarded as a source of valuable compounds. Valorization of active pharmaceutical ingredients (APIs) from pharmaceutical waste, as an alternative to widely adopted treatment by incineration, is a big challenge in terms of designing green, efficient, scalable and sustainable separation methods. Concerning these...

Aqueous biphasic systems (ABS) formed by copolymers and ionic liquids (ILs) have demonstrated to be effective separation platforms, but there is still a gap on the complete understanding of the molecular-level mechanisms ruling the two-phase formation for this type of systems. This work addresses the determination of the liquid-liquid equilibrium o...

Expired energy drinks are rich in bioactive added-value compounds that can be recovered and reused in order to valorize food waste within a circular economy perspective. However, to accomplish such requirements it is necessary to develop sustainable extraction and recovery processes, which must comprise a decrease in the number of steps required or...

Despite a large collection of publications dealing with the characterization of ionic liquid-based aqueous biphasic systems (IL-ABS), a gap still exists regarding the impact of functionalized alkyl side branches and IL positional isomers on phase equilibria. Therefore, this work addresses the investigation of the ability of different methyl substit...

The chemotherapeutic parthenolide (PTL) has an excellent potential in the treatment of acute lymphoblastic leukemia and much attention has been focused to overcome its poor aqueous solubility, which limits PTL bioavailability. The most promising approach is using micellar structures of Pluronics (class of triblock copolymer of poly(ethylene)-poly(p...

Molybdenum (Mo), vanadium (V) and tungsten (W) are strategic metals with many applications particullary in steel alloys, catalyst in petrochemical, chemical and aerospace industries. Their coexistence in various resources and similar chemical properties makes their extraction and mutual separation very challenging. Speciation of Mo, V and W in aque...

The novel aqueous biphasic systems based on symmetric imidazolium ionic liquids (ILABSs) for the extraction of toxic and resistive dyes from water was studied. The cation symmetricity of ILs strongly influence the outstanding ability of 1,3-dibutylimidazolium dicyanamide, [bbim][dca], to generate ABS with the exceptionally low amount of ecofriendly...

In this manuscript eight new 1,3-dialkylimidazolium bromide ionic liquids, [CnCmim][Br], were synthesized and characterized. Densities of ionic liquids and their diluted aqueous solutions have been measured over the whole composition range at selected temperatures from (293.15 to 323.15) K and at atmospheric pressure (p = 0.1 MPa). Influence of alk...

Carbon materials, prepared by different methods using ionic liquid, are compared as electrocatalysts for oxygen reduction reaction (ORR). Materials were synthesized by hydrothermal carbonization of glucose and by the same method in the presence of 1-butyl-3-methylimidazolium methanesulfonate [bmim][MeSO3] as additive. Other two carbon materials wer...

In this study, four hydrophilic ionic liquids (ILs) containing 1-alkyl-3-methylimidazolim cation and either salicylate or chloride anions were synthetized and studied as new task-specific ionic liquids (TSILs) suitable for aqueous biphasic system (ABS) formation and selective one-step extraction of copper(II). TSILs are designed so that the anion i...

In this paper we report a simultaneous one-step extraction of five pesticides (acetamiprid, imidaclopride, simazine, linuron and tebufenozide) of different polarity using aqueous biphasic system based on 1-butyl-3(methyl or ethyl) substituted imidazolium or pyrrolidinium ionic liquids with bromide or dicyanamide anion and potassium carbonate as a s...

In this work three 1-alkyl-3-ethylimidazolium bromide ionic liquids (alkyl = ethyl, hexyl and octyl) were synthesized applying both, conventional and microwave assisted synthetic paths. The phase diagrams for aqueous solutions of 1-alkyl-3-ethylimidazolium bromide ionic liquids as novel extractants combined with phosphate-based salts are reported a...

In this work, novel phase diagrams for aqueous solutions of 1-alkyl-3-methylimidazolium- and 1-butyl-3-ethylimidazolium-based ILs combined with phosphate-based salts, namely, K3PO4 or K2HPO4, are reported and discussed. To correlate the binodal data, the Merchuk equation is applied. The tie lines and tie-line lengths are also presented. The anion i...

The ionic liquid based vortex-assisted liquid-liquid microextraction (IL-VALLME) procedure was developed and validated for determination of four pesticides in a manufacturing wastewater sample: acetamiprid, imidacloprid, linuron and tebufenozide. The following ILs were tested as extractants: 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)i...