BMC Chemistry最新文献

{"title":"Construction of ZnO/SnO2 nanocomposites for enhancing the visible-light-driven photocatalytic degradation of alizarine yellow R dye","authors":"Muhammad Jamshaid,&nbsp;Atef El Jery,&nbsp;Moutaz Aldrdery,&nbsp;Mohammad Ashraf Hossain,&nbsp;Maha Sharif,&nbsp;Huma Sadiq,&nbsp;Narzikul Maxmudov,&nbsp;Alisher Babamuratov,&nbsp;Shamil Mahmudov,&nbsp;Hossam S. El-Beltagi,&nbsp;Ahmad Samir Shahsamandy","doi":"10.1186/s13065-026-01907-w","DOIUrl":"10.1186/s13065-026-01907-w","url":null,"abstract":"<div><h3>Aim</h3><p>The current research study focuses on the construction of effective zinc oxide/tin dioxide (ZnO/SnO₂) nanocomposites The synthesized nanocomposites were subsequently implemented as photocatalyst materials for the elimination of toxic alizarine yellow R (AYR) in aqueous solution under visible light.</p><h3>Method</h3><p>The synthesis of ZnO/SnO₂ nanocomposite photocatalyst was carried out via hydrothermal method combined with ultrasonic-assisted calcination with some modifications.</p><h3>Results</h3><p>Various analytical methods, such as XRD, SEM-EDS, XPS, and UV-DRS analysis, validated the effective fabrication of the nanocomposites. The findings exhibited the enhanced elimination of AYR with 98.07% degradation using the ZnO/SnO₂ photocatalyst, significantly surpassing the degradation rates of pure ZnO (63.10%) and SnO₂ (52.47%) over a 60-minute timeframe under optimal conditions. The rate constant for ZnO/SnO₂ (0.0651 min⁻¹) was markedly superior to that of pure ZnO (0.0170 min⁻¹) and SnO₂ (0.0125 min⁻¹). The reduced bandgap energy of the ZnO/SnO₂ photocatalyst relative to pure ZnO and SnO₂ enhanced its degradation potential for AYR degradation through enhancing the visible light absorption. The research examined the influence of various reaction variables and intervening anions on AYR degradation. Additionally, the radical scavenging experiments confirm the presence of reactive radicals involved in the presence of AYR degradation.</p><h3>Conclusion</h3><p>The ZnO/SnO₂ photocatalyst showed remarkable reusability and preserved its photocatalytic effectiveness after undergoing five consecutive cycles that further confirmed the significant potential of the synthesized ZnO/SnO₂ photocatalyst in eliminating AYR-contaminated water.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13548477/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148904850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Waste-derived nanocomposite carbon paste electrochemical sensor for the first guadipyr monitoring in agri-environmental samples: a sustainable platform for on-site analysis","authors":"Saja A. Althobaiti,&nbsp;Jamilah A. Asiri,&nbsp;Darelglal Ahmed Gassmelseed Abdallah,&nbsp;Omkulthom Al kamaly,&nbsp;Ahmed Emad F. Abbas","doi":"10.1186/s13065-026-01900-3","DOIUrl":"10.1186/s13065-026-01900-3","url":null,"abstract":"<div><p>A portable electrochemical sensing platform was developed for the determination of guadipyr (GUA) in agri-environmental and food matrices as a sustainable alternative to conventional chromatographic methods. To the best of our knowledge, this is the first electrochemical sensor reported for GUA monitoring. The sensing interface was fabricated using a carbon paste electrode modified with multi-walled carbon nanotubes (MWCNTs) and aluminum oxide nanoparticles (Al₂O₃-NPs) synthesized from recycled aluminum foil waste, integrating waste-valorization principles into sensor fabrication. Structural and electrochemical characterization confirmed the successful construction of a highly active nanocomposite interface with enhanced conductivity and charge-transfer properties. The electrochemical behavior of GUA was investigated by cyclic voltammetry and differential pulse voltammetry, revealing a well-defined irreversible cathodic peak at − 0.68 V (CV) and − 0.67 V (DPV) in Britton–Robinson buffer (BRB) (pH 5.0), corresponding to the reduction of the nitro group. Under optimized conditions, the proposed sensor exhibited a linear response over the concentration range of 0.5–35 µM with a detection limit of 0.067 µM. The method was successfully applied for GUA determination in tomato, river water, irrigation water, and soil samples using matrix-matched calibration, providing satisfactory recoveries and high precision. Sustainability assessment using MA, CFA, NQS, and SAMI metrics confirmed the eco-friendly nature of the method. The developed platform offers a rapid, low-cost, and field-deployable strategy for routine GUA monitoring.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13628869/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First report adsorptive differential pulse voltammetric sensor for sensitive determination of dronedarone in dosage form and biological samples based on tungsten oxide nanostructure: DFT assisted mechanistic insight","authors":"Rehab Alatawi,&nbsp;Jawza Sh Alnawmasi,&nbsp;Deemah M. Alenazy,&nbsp;Ahmed H. Jawhari,&nbsp;Razan M. Snari,&nbsp;Omer A. Azher,&nbsp;Nasser A. Alamrani,&nbsp;Nashwa M. El-Metwaly","doi":"10.1186/s13065-026-01890-2","DOIUrl":"10.1186/s13065-026-01890-2","url":null,"abstract":"<div><p>The present study illustrated the construction, characterization, and application of a novel tungsten oxide nanoparticle (WO₂NPs) based sensors for sensitive adsorptive differential pulse voltammetric quantification of dronedarone (DRO) in dosage forms and biological samples. The content of the WO₂NPs was optimized with full characterization of the surface morphology and the electroanalytical features of the fabricated sensors. At pH 2, DRO molecule recorded an irreversible oxidation peak at 1.08 V following adsorption-controlled mechanism. The molecular orbital calculations and electroanalytical studies sustained the electrooxidation of the nitrogen atom (N5) through the transfer of two-electron/two-proton reaction. Calibration graphs showed linear dynamic range covering the DRO concentration ranged from 0.010 to 2.772 µgmL^− 1, with LOD value 0.0031 µgmL^− 1. The developed WO₂NPs based voltammetric sensor has been successfully applied for the quantification of DRO in biological and pharmaceutical samples. The outcomes were contrasted with the previously reported analytical methods, with the advantages of acceptable performance, wide linear range, and low LOD value. The green assessment of the method acknowledged the environmental friendliness, with the minimal waste generation.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13615637/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149056745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spectrophotometric determination of cefepime and enmetazobactam in pharmaceutical formulations and human plasma using chemometric modeling, metaheuristic wavelength selection, and comprehensive sustainability assessment","authors":"Ahmed Farghaly,&nbsp;Lateefa A. Al-Khateeb,&nbsp;Belal Muneeb Kanaan,&nbsp;Galal Magdy,&nbsp;Moayad M. Khashoqji,&nbsp;Mahmoud A. Tantawy,&nbsp;Ahmed Emad F. Abbas","doi":"10.1186/s13065-026-01896-w","DOIUrl":"10.1186/s13065-026-01896-w","url":null,"abstract":"<div><p>The recently introduced cefepime–enmetazobactam (CEF–ENM) combination requires reliable analytical methods for pharmaceutical quality control and proof-of-concept bioanalytical evaluation. Existing methods are predominantly chromatographic and rely on large volumes of organic solvents, costly instrumentation, and high energy consumption. In this work, a UV spectrophotometric approach integrated with chemometric analysis was established for the simultaneous quantification of CEF and ENM in pharmaceutical formulations and processed post-extraction-fortified human plasma. Calibration samples were prepared according to the Brereton multilevel experimental design, whereas an independent external validation set was constructed using the Maximin Distance Design (MMD) algorithm. The analytical performance of six chemometric models (CLS, PCR, PLS, GA-PLS, FA-PLS, and MCR-ALS) was evaluated to resolve the severe spectral overlap between both analytes. Matrix-specific calibration models were developed for processed plasma samples. The developed models showed excellent analytical performance, with MCR-ALS providing the highest predictive accuracy and robustness. Sustainability was comparatively evaluated using the integrated Multi-color Assessment (MA) Tool together with complementary greenness metrics. The proposed method demonstrated superior overall sustainability compared with previously reported chromatographic methods while maintaining reliable quantitative performance. The proposed approach offers a rapid, cost-effective, and environmentally sustainable alternative for routine pharmaceutical quality control and proof-of-concept evaluation in processed post-extraction-fortified human plasma. Further comprehensive bioanalytical validation is warranted to support routine clinical application.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01896-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148719804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of tungsten disulfide-graphene oxide nanocomposite","authors":"Riham M. A. El-Ghany,&nbsp;Mostafa Zedan,&nbsp;Gamal El-Ghannam,&nbsp;Walid Tawfik,&nbsp;Souad A. Elfeky","doi":"10.1186/s13065-026-01877-z","DOIUrl":"10.1186/s13065-026-01877-z","url":null,"abstract":"<div><p>Two-dimensional (2D) materials, such as tungsten disulfide (WS₂) and graphene oxide (GO), have garnered significant attention. This is due to their unique physicochemical properties and potential applications in catalysis, electronics, and phototherapy. In this study, we report the synthesis and characterization of WS₂ nanosheets, GO nanosheets, and a novel WS₂-GO nanocomposite (NC). The NC was prepared via a simple wet-chemical method, which is low-cost and versatile, ensuring uniform dispersion and strong interfacial interactions between the WS₂ and GO nanosheets. Functional group identification was done by Fourier Transform Infrared Spectroscopy (FT-IR), while structural and morphological analysis was done using X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), and Transmission Electron Microscopy (TEM). Additionally, Energy Dispersive X-ray Spectroscopy (EDX) verified a homogeneous elemental distribution. FT-IR spectra of the NC reveal characteristic bands for carboxyl, hydroxyl, and alkoxy groups from GO, as well as W-S and S-S vibrational modes from WS₂. XRD analysis confirms the crystalline nature of WS₂-GO NC, displaying the characteristic GO peak alongside distinct diffraction peaks corresponding to the hexagonal phase of WS₂, which verifies the successful formation of the hybrid. SEM and TEM imaging visually confirm the integration of WS₂ onto the wrinkled GO surface with minimal aggregation and high crystallinity, as supported by selected area electron diffraction (SAED). Furthermore, the WS₂-GO NC exhibits intensified ultraviolet absorption and broadened, quenched excitonic transitions in the visible range, indicating interfacial electronic coupling and efficient charge transfer. Together, these results demonstrate that the WS₂-GO NC retains the functional properties of both components, making it a promising candidate for next-generation energy storage, catalysis, and biomedical applications.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01877-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous spectroscopic analysis of methocarbamol with its impurity guaifenesin: assessment of greenness, blueness and whiteness applying different sustainability tools","authors":"Maram Attia,&nbsp;Ghada M. Hadad,&nbsp;Randa A. Abdel Salam,&nbsp;Mary E. K. Wahba","doi":"10.1186/s13065-026-01823-z","DOIUrl":"10.1186/s13065-026-01823-z","url":null,"abstract":"<div><p>This work introduces an eco-friendly spectrophotometric approach for the simultaneous quantification of methocarbamol (MET) and its impurity product guaifenesin (GUF), based on measuring the second derivative amplitudes of each drug in presence of the other, using zero-crossing technique. The second derivative amplitudes were measured at 208.0 nm and at 207.5 nm for MET and GUF, respectively. The proposed method showed good linearity over the concentration ranges of 1.0–110.0 and 1.0–90.0 µg/mL for MET and GUF, respectively with corresponding correlation coefficient of 0.9997 and 0.9999. The detection and quantitation limits for MET were found to be 0.021 and 0.064 µg/mL, respectively, while GUF corresponding values were 0.013 and 0.041 µg/mL. The method was successfully applied for determining MET and GUF in its dosage forms with high selectivity. The developed method produced comparable results to those obtained by the published reference methods in terms of precision and accuracy. A comprehensive assessment was carried out to evaluate the suggested method’s economic feasibility, practicality, and environmental sustainability compared to previously reported techniques. This comprehensive assessment leveraged several state-of-the-art tools, including the analytical Eco-scale, Green Analytical Procedure Index (GAPI), Analytical GREEnness (AGREE), Multi-Color Assessment, Analytical Green Star Area (AGSA) and Blueness Assessment Graphical Index tools. The suggested approach exhibited favorable quadrant profiles in GAPI assessment, along with higher AGREE, AGSA and Eco-scale scores, all of which confirmed their eco-friendliness.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01823-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal transformation of MIL-53(Fe)/GO into EMI shielding materials","authors":"Mohamed E. Elmowafy,&nbsp;Ramy Sadek,&nbsp;Mahmoud Zorainy,&nbsp;Osama Abuzalat,&nbsp;Ahmad Baraka,&nbsp;Mohamed F. Hagag,&nbsp;Hesham Tantawy","doi":"10.1186/s13065-026-01850-w","DOIUrl":"10.1186/s13065-026-01850-w","url":null,"abstract":"<div><p>The pyrolysis process parameters were systematically investigated to develop a highly effective EMI shielding composite. By evaluating the key synthesis conditions of pyrolysis temperatures (350 °C, 450 °C, and 550 °C) and durations (0.5 h, 1 h and 2 h), a significant structural transformations and degradation were observed. Optimal conditions were identified at 450℃ for 1 h under an inert argon atmosphere. Under these conditions, enhanced graphitization occurred via the in-situ reduction of GO, alongside the partial degradation of MIL-53(Fe) structure into γ-Fe₂O₃, yielding a ternary composite structure. This optimized composite achieved a total shielding effectiveness (SE_T) of 43 dB, with absorption shielding efficiency (SE_A) of 40 dB and minimal wave reflection (SE_R) of 2.9 dB. The synergistic properties of this ternary composite make it a promising candidate for a wide range of EMI shielding applications. Its combined dielectric and magnetic characteristics offer a lightweight, efficient, and robust material for effective electromagnetic wave attenuation.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01850-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative study of TiO2 and graphene oxide enhancement of the removal of methylene blue dye using PVA/PEO hydrogels synthesized by gamma irradiation","authors":"Mai M. Mohamed,&nbsp;Asmaa Sayed,&nbsp;Dalia E. Hegazy","doi":"10.1186/s13065-026-01837-7","DOIUrl":"10.1186/s13065-026-01837-7","url":null,"abstract":"<div><p>Water pollution from industrial effluents, particularly textile dyes, represents a significant environmental challenge. In this study, polyvinyl alcohol (PVA)/polyethylene oxide (PEO)/poly(acrylic acid) (PAAc) hydrogels were synthesized via gamma irradiation (30 kGy) and modified with titanium dioxide (TiO₂) and graphene oxide (GO) nanoparticles to enhance methylene blue (MB) dye removal. Comprehensive characterization using FTIR, XRD, AFM, SEM, and TGA confirmed the successful incorporation of the nanofillers and their influence on the structural and physicochemical properties of the hydrogels. The addition of TiO₂ and GO significantly improved the gel fraction from 65% (neat hydrogel) to 99% and 98%, respectively. Swelling behavior showed a pH-dependent response, with maximum swelling observed at pH 10 after 24 h, following the order: PVA/PEO/PAAc &lt; PVA/PEO/PAAc/TiO₂ &lt; PVA/PEO/PAAc/GO. Batch adsorption experiments were conducted under controlled conditions (pH 10, adsorbent dosage 0.1 g, initial MB concentration 20 mg/L, and contact time 24 h). The removal efficiencies reached 64%, 98%, and ~ 100% for PVA/PEO/PAAc, PVA/PEO/PAAc/TiO₂, and PVA/PEO/PAAc/GO, respectively. Adsorption kinetics were better described by the pseudo-first-order model, indicating that physisorption plays a dominant role in the rate-controlling step. Isotherm analysis showed good agreement with the Langmuir model, suggesting predominantly monolayer adsorption on relatively homogeneous surfaces. Overall, both TiO₂- and GO-reinforced hydrogels exhibited enhanced adsorption performance compared to the neat hydrogel. The superior performance of GO-based hydrogels is attributed to their higher surface area and abundance of oxygen-containing functional groups, which facilitate dye–adsorbent interactions. These findings demonstrate the potential of radiation-synthesized nanocomposite hydrogels as efficient materials for dye removal, while further studies are required to evaluate their performance under realistic wastewater conditions.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01837-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148597462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetic and isotherm evaluation of xanthene triphenylmethane dye mixture adsorption on cobalt doped coconut husk encapsulated biochar","authors":"Ajay Khajuria,&nbsp;Vatsala Anand,&nbsp;Sandeep Kumar,&nbsp;Ravinder Singh,&nbsp;Chirag Mehta","doi":"10.1186/s13065-026-01818-w","DOIUrl":"10.1186/s13065-026-01818-w","url":null,"abstract":"<div><p>Water is an essential resource, but its quality is increasingly threatened by industrial activities. Textile industries are major contributors to water pollution due to the discharge of untreated synthetic dye effluents into water bodies. In this study, cobalt-doped coconut husk biochar (Co@CHBc) was synthesized by pyrolysis method at 600 °C. The manufactured material was characterized by FESEM, Mapping, EDX, FTIR, BET and XRD. The maximum removal of mixture of cationic dyes such as Rhodamine-B (Rh-B) and Malachite Green (MG) is observed at pH 8, contact time of 60 min, 20 mg/L of mixture of dye concentration, 600 mg of Co@CHBc dosage and at room temperature. The Kinetics data is best fitted with the Pseudo Second Order (PSO) having regression coefficients (R²) of 0.996. The isotherm data is perfectly match with Langmuir Isotherm having R² of 0.9989. The adsorption capacity of the Co@CHBc was determined to be 31.74 mg/g. Thermodynamics study studies shows that the adsorption is exothermic for the mixture of cationic dyes. The reusability and regeneration studies were performed to check the capability of the Co@CHBc. A comparison studies of Co@CHBc is performed with different dyes such as Erichrome Black T (EBT), Methylene Blue (MB), Congo Red (CR), Methyl Orange (MO) and Crystal Violet (CV). Based on the models a purposed mechanism is designed between mixture of cationic dyes and Co@CHBc. The results indicate that cobalt-doped biochar is a low-cost and sustainable material with strong potential for wastewater treatment applications.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01818-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148817096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Additive enhancement of biodegradability and antibacterial performance in thermoplastic starch/chitosan films incorporating oregano essential oil and silver-zinc oxide nanoparticles","authors":"Zahra Sayyar,&nbsp;Hadi Hajikhodazadeh,&nbsp;Mahsa Khadem Sadigh,&nbsp;Zahra Hosseini","doi":"10.1186/s13065-026-01884-0","DOIUrl":"10.1186/s13065-026-01884-0","url":null,"abstract":"<div><p>This study presents a novel thermoplastic starch–chitosan composite film, enhanced with oregano essential oil and silver-zinc oxide (Ag-ZnO: 1%) nanoparticles, designed to overcome the limitations of conventional biopolymer packaging. The synergistic combination of these additives significantly improved mechanical strength (tensile strength: 72.86 to 98.72 MPa), stiffness (Young’s modulus), and reduced water uptake by up to 25% compared to unmodified controls. Rigorous biodegradation tests under UV, soil, and aqueous conditions demonstrated accelerated environmental breakdown, with up to 39.53% weight loss after one month under UV exposure. Antimicrobial assays showed inhibitory activity against the tested microorganisms, with inhibition zones of 42 mm against Staphylococcus aureus and 33 mm against Escherichia coli. These results highlight the multifunctional advantages of integrating biopolymers, essential oils, and nanometallic agents, and support a rational strategy for developing sustainable food-packaging materials with improved physical, degradative, and antimicrobial performance.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13656449/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148468286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}