Chemical Papers最新文献

{"title":"Maximizing essential oil recovery from Aframomum. citratum via spontaneous solid-state fermentation: a comparative study of RSM and ANN approaches","authors":"Sylvie Kwanga Nguikwie,&nbsp;Steve Olugu Voundi,&nbsp;Doriane Djuffo Tegoundio,&nbsp;Brice Thaddee Mbalale Mbalale,&nbsp;Victor Moussango Davy,&nbsp;Samuel Patrick Malle Moukouri,&nbsp;Olivier Choisi Mayouck Etane,&nbsp;Alex Brandown Wambo Talla,&nbsp;Marlyse Leng,&nbsp;Achille Bissoue Nouga,&nbsp;Frederic Marie Tavea","doi":"10.1007/s11696-026-04931-1","DOIUrl":"10.1007/s11696-026-04931-1","url":null,"abstract":"<div><p><i>Aframomum citratum</i>, a little-studied aromatic plant from Cameroon, produces essential oils rich in monoterpenes, yet their industrial use remains limited by low extraction yields. This study investigated spontaneous solid-state fermentation (SSSF) as a pretreatment to enhance essential oil recovery, combined with response surface methodology (RSM via Box-Behnken Design, BBD) and artificial neural networks (ANNs) to model and optimize the extraction yield. A 15-run experimental design was employed to evaluate the effects of fermentation time, moisture content, and hydrodistillation time. The ANN model (3-5-1 architecture using tansig and purelin transfer functions) showed slightly higher predictive performance than the quadratic RSM model (R² = 0.98 vs 0.97), reflecting its ability to capture nonlinear relationships among process variables. Model robustness was further evaluated using leave-one-out cross-validation (LOOCV), which confirmed stable predictive behavior for both approaches. Optimization using the RSM desirability function predicted a maximum oil yield of 1.73%, whereas ANN-based numerical optimization using the <i>fmincon</i> algorithm predicted a slightly higher yield of 1.77% at 9.89 days fermentation, 42.73% moisture content, and 46.24 min hydrodistillation. These results demonstrate that SSSF-assisted extraction coupled with data-driven modelling provides an effective strategy for improving essential oil recovery from <i>A. citratum</i> and supports its potential valorization.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 8","pages":"8977 - 8997"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783242","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":"Evaluation of polyethylene glycol as a urea substitute in reactive printing of cotton fabrics with selected dyes","authors":"Hammad Majeed,&nbsp;Tehreema Iftikhar","doi":"10.1007/s11696-026-05002-1","DOIUrl":"10.1007/s11696-026-05002-1","url":null,"abstract":"<div><p>The textile printing industry relies heavily on urea as a humectant in reactive dye formulations, but its high nitrogen content (46 wt%) contributes to eutrophication and elevated chemical oxygen demand in wastewater. This study evaluated polyethylene glycol 400 (PEG400) as a nitrogen free substitute in cotton reactive printing using two monochlorotriazine dyes, C.I. Reactive Blue 13 and C.I. Reactive Yellow 18, at 2 and 4% shade depths. Four formulations were compared: standard (15% urea) versus PEG400 at 1, 2 and 3% (w/w). Under controlled conditions, the 3% PEG400 formulation significantly outperformed the urea based system. For Reactive Blue 13 at 4% shade, Sum K/S values increased from 139.92 to 154.38, while dye penetration rose from 90.26 to 99.06%. Reactive Yellow 18 at 4% shade showed Sum K/S enhancement from 114.37 to 131.54 and penetration from 83.23 to 98.55%. Fastness properties (rubbing, washing, light, perspiration) remained within acceptable industrial ratings (grade 4 to 5). Fabric softness and edge sharpness also improved. Eliminating 15% urea reduces nitrogen load by approximately 31.7 g nitrogen per kg printing paste, significantly lowering potential nutrient pollution in effluents. Statistical analysis (ANOVA) confirmed that both formulation type and shade depth had significant effects on colour strength. PEG400 at 3% concentration demonstrates superior performance as a sustainable, nitrogen free alternative to urea in reactive cotton printing, offering enhanced colour yield, improved penetration, comparable fastness, and reduced environmental impact.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 9","pages":"10245 - 10257"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871551","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":"Influence of recycled PV glass content and holding time on the sintering behavior, microstructure, and functional properties of high-alumina ceramics","authors":"Truong Bach Chien,&nbsp;Nguyen Hoc Thang","doi":"10.1007/s11696-026-05020-z","DOIUrl":"10.1007/s11696-026-05020-z","url":null,"abstract":"<div><p>A sustainable way to lower the high energy consumption associated with the conventional alumina-based ceramic production process is to use recycled photovoltaic (PV) glass as a sintering aid. In order to assess the densification behavior, microstructural alterations, and functional characteristics of high-alumina ceramics containing 5–20 wt% PV glass, the ceramics were heated to 1600 °C for two to six hours. The findings show that PV glass functions as a dual-purpose additive, influencing grain boundary properties as a microstructural modifier and acting as a fluxing phase to facilitate liquid-phase sintering. Densification was greatly improved by increasing the PV glass up to 15 weight percent, as shown by decreased apparent porosity and increased bulk density and shrinkage. In optimal conditions (15 wt% PV glass, 4 h sintering holding time), the high alumina ceramics achieved a bulk density of 3.79 g/cm³ and a low porosity of 4.85%. With a maximum flexural strength of 385 MPa, fracture toughness (Kᵢc) of 4.7 MPa·m^1/2, and Vickers hardness of 1380 HV1, mechanical properties were also enhanced. Additionally, the dielectric characteristics were improved, showing good electrical insulation behavior with a breakdown strength of up to 27.5 kV/mm and a low dielectric loss. However, due to glass phase segregation and potential over-sintering effects, high glass content (&gt; 15 wt%) or long sintering holding time (≥ 6 h) resulted in minor property degradation. These findings imply that, when properly optimized, recycled PV glass can effectively encourage densification and improve the mechanical and dielectric performance of high-alumina ceramics. However, to prevent negative consequences linked to excessive liquid-phase formation, careful control over glass content and sintering conditions is necessary.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 9","pages":"10471 - 10489"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871597","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":"Sustainable synthesis of carbon nanomaterials with various dimensions and their biomedical uses: a review","authors":"Shruthi Venkataraman,&nbsp;Prakash Gopinath,&nbsp;Megala Jambulingam,&nbsp;Sandeep Arya,&nbsp;Ashok K. Sundramoorthy","doi":"10.1007/s11696-026-05019-6","DOIUrl":"10.1007/s11696-026-05019-6","url":null,"abstract":"<div><p>Carbon nanomaterials have gained the attention of researchers in the biomedical field due to their versatile characteristics, such as unique structural, physical, and chemical properties. Their tunable structures with respect to the synthesis process have led to their applications in various fields of biomedicine. We critically analysed the sustainable synthesis approaches, including green chemistry routes, thermal carbonisation, microwave-assisted methods, hydrothermal processes, pyrolytic techniques, and emerging computationally guided methods. This review encompasses diverse carbon sources, including biomass waste, synthetic polymers, coal derivatives, graphite, and nanocellulose. We demonstrate that dimensional control achieved through strategic precursor synthesis directly influences biomedical performance in cancer therapeutics, tissue-engineering scaffolds, multimodal bioimaging platforms, and cardiovascular applications. Unlike previous application-centric or waste-valorisation reviews, this work integrates sustainability principles with rational materials design, providing researchers with a predictive framework for developing tailored carbon nanomaterials for specific biomedical applications.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 10","pages":"11531 - 11551"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149007394","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 comprehensive review of MXene–transition metal oxides composites as photocatalysts for the hydrogen evolution reaction","authors":"Maha Bibi,&nbsp;Sana Sabahat,&nbsp;Azra Yaqub,&nbsp;Aimen Wajid","doi":"10.1007/s11696-026-04987-z","DOIUrl":"10.1007/s11696-026-04987-z","url":null,"abstract":"<div><p>An expanding global crisis and environmental concerns necessitate a clean and efficient energy source. Sustainable hydrogen production is a promising solution, playing vital role in reducing reliance on fossil fuels and mitigating environmental pollution. Photocatalytic water splitting is considered as a prominent and environmental friendly approach. MXene–transition metal oxides (TMOs) based composites are novel class of hybrids which can be used as photocatalysts, possessing exceptional structural and electronic synergy. MXenes are 2D transition metal carbides and nitrides with conductive properties, abundant active sites and modifiable surface chemistry. TMOs are capacitive materials, having excellent redox activity but rate performance and cyclability are significant challenges which can be solved by forming their heterostructures with MXene. MXene act as conductive bridge for growth of transition metal oxides, which acts as spacer between MXene layers, preventing agglomeration and increasing interfacial contact. This review explores synthesis strategies, structural characteristics and catalytic performance of MXene-TMOs composites and highlights their individual role in photocatalytic hydrogen production. It also highlights limitations, challenges and future perspectives for their scalable applications in sustainable hydrogen production.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 10","pages":"11475 - 11499"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149007393","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":"Innovative alginate–gum arabic drug delivery system for atenolol: a comparative study of ionotropic and emulsion gelation techniques","authors":"Zeynep Aktaş-Erden,&nbsp;Rahime Songür,&nbsp;Emine Bayraktar","doi":"10.1007/s11696-026-04854-x","DOIUrl":"10.1007/s11696-026-04854-x","url":null,"abstract":"<div><p>Atenolol is a selective β1-blocker used to treat high blood pressure and chest pain related to heart problems, and it is frequently utilized in high doses, which can lead to adverse effects for patients during the treatment process. This study aims to develop innovative drug delivery systems for atenolol to overcome these disadvantages. For this purpose, ionotropic gelation and emulsion gelation methods were used to prepare drug carrier materials containing alginate (ALG), gum arabic (GA), and light oils, such as coconut oil (CO) and mineral oil (MO). The encapsulation efficiency for the ionotropic gelation method was obtained as 65.16% with 3% (w/v) GA, 3% (w/v) ALG, and 10% (w/v) CaCl₂. The release studies were performed in the simulated gastric fluid, followed by the simulated intestinal fluid. The same formulation exhibited the most controlled release behaviour, showing a cumulative release of 25.25% in simulated gastric fluid and a total release of 35.91%. In the emulsion gelation method, the highest encapsulation efficiency was achieved as 80.13% for the formulation containing 3% (w/v) GA, 3% (w/v) ALG, and 10% (w/v) CaCl₂ and 15% (v/v) MO. The release of 85.21% the simulated gastric fluid and 95.39% overall release were obtained. Therefore, it is important to consider the potential for the developed drug delivery system to be applied to other drugs.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 7","pages":"7775 - 7790"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553184","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: Calculation of the titration curve of Fe2+ with dichromate: a new and easy approach","authors":"Elisabetta Mazzotta,&nbsp;Paolo Pastore,&nbsp;Cosimino Malitesta","doi":"10.1007/s11696-026-04972-6","DOIUrl":"10.1007/s11696-026-04972-6","url":null,"abstract":"","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 7","pages":"7477 - 7477"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11696-026-04972-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green synthesis of silver nanoparticles using Dipteryx alata, a native cerrado species: optical, morphological and colloidal characterization","authors":"L. H. S. Oliveira,&nbsp;M. D. S. da Pinto,&nbsp;M. G. dos Santos,&nbsp;E. C. Lima","doi":"10.1007/s11696-026-05009-8","DOIUrl":"10.1007/s11696-026-05009-8","url":null,"abstract":"<div><p>Green synthesis provides a sustainable route to metallic nanoparticles using phytochemicals as reducing and capping agents. In this study, silver nanoparticles (AgNPs) were synthesized in aqueous medium with leaf extracts of <i>Dipteryx alata</i> Vogel, a native Brazilian Cerrado species enriched in phenolic and antioxidant metabolites. UV monitored the formation of AgNPs–Vis spectroscopy, which demonstrated rapid nucleation, progressive growth, and a characteristic blue-shift of the surface plasmon resonance band for the 90/10 (AgNO₃/extract) formulation, denoting the formation of smaller nanoparticles. SEM-FEG imaging confirmed predominantly spherical nanostructures with EDS verifying their Ag-based composition. Dynamic light scattering measurements yielded a multimodal size distribution dominated by nanometric populations (≈18 nm), with secondary fractions attributable to limited aggregation and consistent with a moderate zeta potential (≈ − 12 mV). Together, the complementary techniques demonstrate that <i>D. alata</i> metabolites facilitate nucleation, growth, and stabilization of AgNPs via a classical phytochemical-mediated mechanism. These findings underscore the bioprospecting potential of Cerrado plant species for eco-friendly nanomaterial deployment and strengthen <i>D. alata</i> as a viable platform for biosensing, catalytic, and antimicrobial applications.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 9","pages":"10345 - 10353"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11696-026-05009-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical valorization of cooked chicken waste into biodiesel-based ternary nanofuel","authors":"T. Sathish","doi":"10.1007/s11696-026-05006-x","DOIUrl":"10.1007/s11696-026-05006-x","url":null,"abstract":"<div><p>The biodiesel-based research is increasing day-by-day with the available resources including the waste materials to meet the future demand. One of the sustainable waste sources is cooked chicken waste like bones and some flesh parts etc., from food stalls and hotels after serving to their customers. Chicken biriyani is a major familiar and favorite food worldwide. This investigation focuses on using such cooked chicken wastes to produce alternate fuel for diesel engines. The biodiesel was produced from such waste by pyrolysis process then they transesterified to produce biodiesel. This biodiesel quality was improved by blending 25% with diesel (80%) and further enhanced with three different nanoparticles such as silicon dioxide nanoparticles, MWCNT, Copper oxide, and ternary nano fuel (which combines these three nanoparticles in equal proportion in that blend). These nano fuels were tested in a 5.2 kW, CI engine test rig with different load conditions. Compared to individual nano fuels, this ternary nano fuel showed improved performance at full load conditions as well as in terms of average performance. Though the performance of nano fuels was found better than base fuel, the results revealed that the ternary nano fuel was outperformed in terms of 3.67% higher BTE, 23.92% reduced CO, 18.34% reduced HC, 8.96% reduced NOx, and 19.62% reduced smoke emission than diesel. Therefore, ternary nano fuel will be the best alternative for diesel engines to operate with improved performance with reduced emissions without any modification in the diesel engines.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 9","pages":"10291 - 10308"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871569","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":"Development and characterization of Loofah vine stem fiber–volcanic pumice dust reinforced 3d printed bio composites: mechanical, wear, thermal, and wettability analysis","authors":"M. G. Ramachandran,&nbsp;S. Manoj Kumar,&nbsp;H. Vinoth Kumar,&nbsp;R. Ashok Raj,&nbsp;A Chandrashekhar","doi":"10.1007/s11696-026-04894-3","DOIUrl":"10.1007/s11696-026-04894-3","url":null,"abstract":"<div><p>This study investigates the mechanical, thermal, and surface behavior of poly lactic acid (PLA)-based composites reinforced with silane-treated luffa vine stem microfiber and silane-treated volcanic pumice filler. Mechanical characterization revealed significant improvements in tensile strength, flexural strength, impact energy, and hardness with the incorporation of treated reinforcements. Among all specimens, PLV2 (67 vol. % PLA, 30 vol. % microfiber and 3 vol. % filler)exhibited the highest mechanical performance, achieving a tensile strength of 127 MPa, flexural strength of 141 MPa, impact energy of 4.23 J, and hardness of 81 Shore-D. These enhancements are attributed to the synergistic interaction between silane-treated microfiber and 3 vol. % silane-treated pumice, which improves interfacial adhesion, promotes uniform stress distribution, and enables effective crack-bridging and filler-induced stiffening. Thermogravimetric analysis revealed that PLV3 demonstrated the highest thermal stability, with a decomposition temperature of 289 °C and a mass loss of 96%, due to its higher mineral content providing a stronger heat-barrier effect despite containing more organics that contribute to mass loss. Water contact angle measurements also confirmed PLV3 (67 vol. % PLA, 30 vol. % microfiber and 5 vol. % filler)as the most hydrophobic specimen, reaching 75°, an effect derived from increased surface roughness and the hydrophobic silane layers coating the filler particles. Scanning Electron Microscopic (SEM) analysis further supported these findings, showing smooth and brittle fracture surfaces for neat PLA, strong filler–matrix adhesion and improved dispersion for PLV2, and noticeable filler agglomeration in PLV3. Overall, the study highlights that silane treatment significantly enhances interfacial bonding, and the optimal balance for mechanical reinforcement occurs at 3 vol. % filler, while higher filler loading maximizes thermal resistance and hydrophobic behavior.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"80 8","pages":"8557 - 8569"},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783230","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}