Chemical Papers最新文献

{"title":"Selection of the suitable extraction solvent to improve phenolic content and antioxidant activity in some Algerian black olive varieties","authors":"Abderrahmane Mokrani,&nbsp;Lounes Chaouch,&nbsp;Khaled Messaoudene","doi":"10.1007/s11696-025-04009-4","DOIUrl":"10.1007/s11696-025-04009-4","url":null,"abstract":"<div><p>This study aims to investigate the effects of extraction solvent on the extraction of phenolic compounds (total phenolic content; TPC, total flavonoid content; TFC, and total flavonol content; TFLC) and the antioxidant activities (total antioxidant activity; TAA, DPPH radical-scavenging activity; DPPH-RSA, ABTS radical-scavenging activity; ABTS-RSA, ferric reducing power; FRP, and iron chelating activity; ICA) of three Algerian black olive varieties (Aharoune, Bouchouk, and Sigoise) cultivated in the region of Bejaia (Algeria). The results indicated that both cultivar and extraction solvent significantly (<i>p</i> &lt; 0.05) affected the TPC, TFC, TFLC, and the antioxidant activities (TAA, DPPH-RSA, ABTS-RSA, FRP, and ICA). Notably, the TPC of olive fruits showed the highest ranges (2.3–4.2 g GAE/100 g DW) when extracted in 60% acetone, followed by 60% ethanol (2.3–3.8 g GAE/100 g DW) and water (1.9–2.3 g GAE/100 g DW). Pearson correlation analysis showed a good positive linear correlation between phenolic compounds and antioxidant activities, indicating that the phenolic compounds in black olives are the main contributors to their antioxidant potential. These findings support the idea that black olives are a good source of phenolic compounds with high antioxidant activities, namely antiradical scavenger activity, ferric reducing power, and iron chelating activity. Therefore, black olive extracts could serve as valuable natural products beneficial to human health, making them a promising alternative to synthetic antioxidants in various applications, including food, cosmetics, and pharmaceuticals.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3351 - 3363"},"PeriodicalIF":2.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of MnO2/BiVO4 composite photocatalyst materials applied in landscape-water purification design of elderly community","authors":"Jiahui Wang,&nbsp;Chen Yu,&nbsp;Yifei Yu,&nbsp;Xueqin Jiang","doi":"10.1007/s11696-025-04006-7","DOIUrl":"10.1007/s11696-025-04006-7","url":null,"abstract":"<div><p>Antibiotic contaminants such as tetracycline hydrochloride (TC) in landscape water of elderly communities threaten health. Antibiotics degradation in water purification leads to better environment. TC degradation by heterojunction nanocomposite for activating peroxymonosulfate (PMS) is significant. Here, MnO₂/BiVO₄ nanocomposite catalysts were prepared by sonication and heat treatment. MnO₂ particles with 6–8 nm of size were uniformly distributed on BiVO₄ to favor rapid recombination of electron/hole pairs to improve the efficiency of PMS activation. Photocatalytic system with MnO₂/BiVO₄ nanocomposite catalyst achieved efficient TC degradation. Optimal TC degradation conditions were [catalyst] = 0.2 g, [PMS] = 0.15 g and pH = 7. Electron paramagnetic resonance (EPR) and scavenger studies verified the occurrence of ·OH, SO₄^·−, ¹O₂, h⁺, ·O₂⁻ and e⁻ species and positive contribution of MnO₂/BiVO₄ nanocomposite to PMS activation. MnO₂/BiVO₄ nanocomposite exhibits good reusability in catalytic reactions. This work provides suitable photocatalytic materials for TC treatment in senior community landscape water.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3309 - 3321"},"PeriodicalIF":2.2,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of a high-purity zeolite A from bagasse fly ash: optimization, characterization, and application as a low-cost adsorbent for cadmium","authors":"Venkata Sai Krishna Gaddam,&nbsp;Chandra Sekhar Matli","doi":"10.1007/s11696-025-04004-9","DOIUrl":"10.1007/s11696-025-04004-9","url":null,"abstract":"<div><p>The perpetual demand for sugar led to expansion of the sugar industry creating large quantities of liquid and solid waste materials. Bagasse fly ash (BFA) is one such particulate residue collected from flue gas effluent system of sugarcane bagasse-fired boiler units. The BFA is transformed into a zeolite with better adsorption capacity by optimization of synthesis parameters Si/Al, NaOH/BFA, temperature, and time. HCl pretreatment significantly enhanced the zeolite-forming components of BFA, namely SiO₂, Al₂O_3, and Na₂O from initial 77.85 to 84.24% while simultaneously reducing oxide impurities. The pretreated BFA was fused at 550 °C for 90 min followed by hydrothermal treatment under optimized conditions, including a well-adjusted Si/Al ratio of 1.1, NaOH/BFA ratio of 1:0, synthesis temperature of 100 °C, and a 6-h synthesis duration. The resulting zeolite A possessed high crystallinity of 91.89%. The synthesized zeolite A comprehensively validated through advanced characterization techniques, including X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET), and Fourier transform infrared spectroscopy (FTIR) confirming its structural integrity and enhanced material properties. Analyses confirmed zeolite had a surface area of 126.24 m²/g and a cation exchange capacity (CEC) of 145.33 meq/mol. The ability of synthesized zeolite to adsorb heavy metals (HMs) was tested using Cd⁺² ions, with optimized parameters, namely, pH, adsorbent dosage, concentration, and contact. Under the optimized conditions, the zeolite achieved a maximum Cd⁺² removal of 118.20 mg/g, aligning with pseudo-second-order kinetics and the Langmuir isotherm model. Successive adsorption–desorption studies demonstrated high efficiency, with a slight reduction in subsequent cycles, highlighting the potential of BFA as a zeolite for HM removal. Thermodynamic studies confirmed the adsorption process is endothermic and spontaneous, with a positive entropy change signifying increased randomness at the solid–liquid interface. Cost analysis demonstrated that the cost of BFA-synthesized zeolites was significantly less compared to commercially available zeolites. The zeolite A derived from BFA addresses the issues of waste minimization and metal contamination alleviating environmental burden.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3273 - 3289"},"PeriodicalIF":2.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and optimization of dual-fuel natural gas-DME combustion in an HCCI engine: a 3E analysis using NSGA-II","authors":"Ali Manizadeh,&nbsp;Mehdi Mehrpooya,&nbsp;Fathollah Pourfayaz","doi":"10.1007/s11696-025-04008-5","DOIUrl":"10.1007/s11696-025-04008-5","url":null,"abstract":"<div><p>This study investigates, models, and optimizes the dual combustion of dimethyl ether (DME) and natural gas (NG) fuels in an HCCI engine. Recognized for high efficiency and low emissions, HCCI engines play a vital role in reducing environmental impact. DME and NG were selected for their eco-friendly properties and potential to enhance engine performance. Key performance variables engine speed, compression ratio, equivalence ratio, initial temperature, initial pressure, and NG molar percentage in the DME-NG mixture were analyzed and used as inputs for an accurate zero-dimensional computational model. These variables were optimized using the non-dominated sorting genetic algorithm II (NSGA-II) for multi-objective optimization and the genetic algorithm (GA) for single-objective optimization. The study minimized exergy efficiency, total emissions (HC, CO, CO₂), and work exergy cost. Multi-objective optimization yielded an optimal scenario with a 451.48 K initial temperature, 1501.3 rpm engine speed, 1 bar initial pressure, 0.13 NG molar percentage, 12.75 compression ratio, and 0.3 equivalence ratio, achieving a reverse exergy efficiency of 130.49 (1/<i>η</i>_ex), total emissions of 2.373e−04 kg, and a work exergy cost of 0.2715e−04 $ per engine cycle. Another scenario at 350 K, 1434.4 rpm, 1.19 bar, 0.333 NG molar percentage, 24.38 compression ratio, and 2.23 equivalence ratio resulted in a reverse exergy efficiency of 2.267, emissions of 0.0044 kg, and a work exergy cost of 6.1483e−04 $. Single-objective optimization revealed a reverse exergy efficiency of 2.2290, emissions of 3.6403e−24 kg, and a work exergy cost of 1.8578e−09 $. These findings highlight the critical role of optimal parameters in balancing environmental, economic, and exergy objectives for enhanced engine performance.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3323 - 3350"},"PeriodicalIF":2.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural deep eutectic solvents as a green inhibitor of carbon steel corrosion in sulphuric acid","authors":"Khalid M. Abed,&nbsp;Osama A. Mohsen,&nbsp;Teeba M. Darwesh,&nbsp;Adeeb Hayyan,&nbsp;Yousef Mohammed Alanazi,&nbsp;Jehad Saleh,&nbsp;Wan Jeffrey Basirun,&nbsp;Bhaskar Sen Gupta","doi":"10.1007/s11696-025-03983-z","DOIUrl":"10.1007/s11696-025-03983-z","url":null,"abstract":"<div><p>This study reports two distinct natural deep eutectic solvents (NADESs) as novel corrosion inhibitors of carbon steel in diluted sulphuric acid (H₂SO₄). The investigated NADES was synthesised from lactic acid as hydrogen bond donor and glucose or D-fructose as hydrogen bond acceptors. The effects of temperature, time, inhibitor concentration, and H₂SO₄ concentration were optimised. Then, the corrosion rate was assessed in the presence and absence of the inhibitors. The inhibition efficiency of the NADES was investigated at different temperatures. The inhibition mechanism was investigated using adsorption isotherms and kinetic models. The results indicated that 120 min, 298 K, and 0.5 mol/L of H₂SO₄ achieved the lowest corrosion rate. NADES prepared from lactic acid and D-fructose was the most efficient solvent as a corrosion inhibitor, demonstrating an inhibition efficiency of 82% at 120 min in 0.5 mol/L H₂SO₄ and 298 K. Furthermore, the Langmuir isotherm model closely fit the inhibition process, which suggests monolayer adsorption of green NADES on the carbon steel surface. The kinetic analysis reveals a mixed-type mechanism involving the physisorption of the green NADES inhibitors. The results provided insights into the development of benign and environmentally friendly inhibitors such as NADES in acidic media.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"2995 - 3006"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparing radiation-proof terylene garment fabric by FeS-doped Ti3C2 two-dimensional nanomaterial","authors":"Hua Li,&nbsp;Xiaoyuan Luo","doi":"10.1007/s11696-025-04001-y","DOIUrl":"10.1007/s11696-025-04001-y","url":null,"abstract":"<div><p>This paper concentrates on innovative preparation of FeS nanoparticles-modified Ti₃C₂ two-dimensional nanoscale absorbing material, exploring its application potential in the field of radiation-proof polyester clothing fabrics. Through hydrothermal composite method, we successfully modified FeS nanoparticles uniformly and stably on Ti₃C₂ nanosheets to prepare a sandwich-like FeS@Ti₃C₂ composite. Through analyzing the phase structure and purity, the optimal preparation conditions were obtained (pH of 5, temperature of 120 ℃, holding time of 4 h, and raw material ratio of Fe:S:Ti = 1:1:1). The primary crystal phases identified were FeS and Ti₃C₂, both free from impurities. The electromagnetic wave (EMW) attenuation properties of FeS@Ti₃C₂ were investigated using impedance matching, dielectric constant, complex permeability, Cole–Cole plots, and minimum reflection loss measurements. FeS@Ti₃C₂ composite has a reflection loss of − 24.60 dB at 14.3 GHz and matching thickness of 2.2 mm. The FeS@Ti₃C₂ material exhibits exceptional EMW absorption performance. The EMW absorption capacity of Ti₃C₂ is significantly enhanced, allowing the composite to maintain an efficient absorbing effect across a wide frequency range. Benefiting from the high conductivity and mechanical strength of Ti₃C₂, the magnetic loss mechanism of FeS is introduced to achieve impedance matching and broadband absorption.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3237 - 3248"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comparative study of methanol and aqueous extracts of Cucumis trigonus: phytochemical composition, antioxidant, antimicrobial, and cytotoxic activities","authors":"Karuppiah Nagaraj,&nbsp;Chandrabose Uthra,&nbsp;Mohammed F. Albeshr,&nbsp;K. Raja,&nbsp;Gunasekaran Velmurugan","doi":"10.1007/s11696-025-03925-9","DOIUrl":"10.1007/s11696-025-03925-9","url":null,"abstract":"<div><p>The method was used to evaluate the phytochemical composition, antioxidant, cytotoxicity, and antimicrobial potential of methanolic and aqueous extracts from the fruit of <i>Cucumis trigonus</i>. Qualitative phytochemical screening revealed the presence of alkaloids, saponins, flavonoids, and tannins, all of which are known for their therapeutic properties, including antioxidant, anti-inflammatory, and antimicrobial effects. Antioxidant activity assays, including 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydrogen peroxide, lipid peroxidation, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS), and alkaline DMSO assays, demonstrated concentration-dependent scavenging activity in both extracts, with the methanolic extract generally exhibiting higher antioxidant efficacy. Additionally, the methanolic extract displayed superior lipid peroxidation inhibition, particularly in egg lecithin assays, indicating its potential to prevent oxidative damage. The antimicrobial assessment showed the aqueous extract had significant inhibitory effects on gram-positive bacteria (<i>Bacillus subtilis</i> and <i>Streptococcus aureus</i>) and selected fungi (Aspergillus niger and Candida albicans), outperforming the methanolic extract. The minimum inhibitory concentration (MIC) was determined through a twofold serial dilution method. Cytotoxicity was assessed using A549 and Hep G2 cell lines, revealing significant cell viability reduction in both cancer cell lines. Methanol showed potent activity against A549 with IC₅₀ value of 171 ug/ul, and aqueous showed potent activity against HEPG-2 with IC₅₀ value of 40 ug/ul.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2287 - 2298"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Functionalization of Tinospora cordifolia stem waste charcoal (FTCC) and its utilization for decontamination of water","authors":"Fazil Nazir,&nbsp;Anupam Agarwal","doi":"10.1007/s11696-025-03992-y","DOIUrl":"10.1007/s11696-025-03992-y","url":null,"abstract":"","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 4","pages":"2639 - 2642"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, characterization and sensor applications of a new 1,4-naphthoquinone derivative molecule","authors":"Oguz Özbek,&nbsp;Onur Cem Altunoluk,&nbsp;Kıymet Berkil Akar,&nbsp;Ömer Isildak","doi":"10.1007/s11696-025-04002-x","DOIUrl":"10.1007/s11696-025-04002-x","url":null,"abstract":"<div><p>In this study, a new naphthoquinone derivative molecule was synthesized with a very high yield (99.0%), and its sensor properties were investigated. The characterization of the synthesized molecule was carried out using spectroscopic methods such as ¹H-, ¹³C-NMR and FT-IR. Polymer membrane potentiometric sensors were prepared using this molecule as an ionophore, and these newly prepared sensors exhibited selective behavior toward barium(II) ions. The one of barium(II)-selective potentiometric sensors developed had a low detection limit of 3.51 × 10⁻⁶ mol L⁻¹ in a wide concentration range of 1.0 × 10⁻¹–1.0 × 10⁻⁵ mol L⁻¹ and had also a near-Nernstian behavior. The proposed barium(II) selective sensor was shown to have good reproducibility, fast response time (&lt; 5 s), wide pH working range (5.0–10.0) and low cost production. Besides, it could detect barium(II) ions in various water samples with high recoveries; and based on its advantages, it can be proposed as a new alternative in the analysis of barium(II) ions.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3249 - 3260"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green synthesis of silver nanoparticles via Ocimum basilicum: optimization, supplementation with Triton X-100 and their antimicrobial activity","authors":"Asma Shahzad","doi":"10.1007/s11696-025-04000-z","DOIUrl":"10.1007/s11696-025-04000-z","url":null,"abstract":"<div><p>The current investigation was conducted to develop silver nanoparticles (AgNPs) via green technique by employing plants that is both an eco-friendly and a cost-effective method. After careful selection, <i>Ocimum basilicum</i> (basil) (CLCB30) was utilized for the generation of the AgNPs. Varying parameters consisting of temperature, pH and volume of extract were altered to optimize the AgNPs and inspect their response on the size, shape and reaction time towards the NPs. Later on, Triton X-100 was added to enhance the AgNPs and its effect was monitored. Characterization of the silver NPs was performed via UV–Vis spectrophotometer displaying a peak at 440 nm, while Fourier-transform infrared uncovered the functional groups. After series of experiments, optimization and addition of Triton X-100, a final size of 30.0 ± 0.04^a nm with a zeta potential of − 18.1 mV was established through inspection with zeta sizer, whereas atomic force microscopy unveiled needle-shaped nanoparticles. X-ray diffraction studies also revealed peaks verifying its crystalline nature. The AgNPs were optimized at a pH of 8, 80 °C temperature together with volume of leaf-extract at 40 mL with Triton X-100 (10 mL). Subsequently, antibacterial properties of AgNPs were also tested against <i>Pseudomonas aeruginosa</i> CLCB04, <i>Escherichia coli</i> CLCB05 followed by <i>Bacillus subtilis</i> CLCB12 demonstrating efficient NPs. AgNPs formulated via green method is a promising technique that can be optimized easily by altering parameters one at a time and can be applied to various fields in future, like the biomedical sector in particular for the treatment of diseases.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 5","pages":"3221 - 3236"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}