BMC Chemistry最新文献

{"title":"Spectrofluorimetric quantification of terconazole in pharmaceutical creams with comprehensive sustainability evaluation","authors":"Huda Salem AlSalem,&nbsp;Sara Naif Alharbi,&nbsp;Shimaa A. Mahmoud,&nbsp;Noha S. Katamesh,&nbsp;Mohamed A. Abdel-Lateef","doi":"10.1186/s13065-026-01844-8","DOIUrl":"10.1186/s13065-026-01844-8","url":null,"abstract":"<div><p>Terconazole is an effective antifungal drug with a broad spectrum of activity against many types of fungi. In the study, a spectrofluorimetric method was developed for the quantification of terconazole. Eosin Y, an efficient fluorescence probe, was used in the developed work. The developed method is based on forming a non-fluorescent association complex between terconazole and eosin Y, which quenches eosin Y’s inherent fluorescence intensity at both excitation and emission spectra. This quenching effect is highly correlated with the concentration of terconazole, with a linear range of 0.15–1.2 µg/mL. Furthermore, Stern-Volmer analysis was carried out to study the quenching fluorescence strength of eosin Y by terconazole. Moreover, the developed method exhibits an LOD of 0.041 µg/mL and a LOQ of 0.125 µg/mL. Moreover, the recommended method was verified in accordance with ICH guidelines. In addition, with respectable recovery values, the established procedures were successfully applied to the analysis of terconazole in vaginal cream dosage forms. Furthermore, the greenness of the entire proposed project was assessed using the following assessment tools: MoGAPI, Complex MoGAPI, MoGSA, BAGI, and RAPI. The green profiles provided outstanding evidence of the greenness and environmental friendliness of the proposed approach.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01844-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148194295","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":"Functional xanthan gum-based ZnO nanocomposite for antimicrobial applications: synthesis, properties, and performance evaluation","authors":"Ahmed Abdelgawad,&nbsp;Soliman M. A. Soliman,&nbsp;Mostafa E. Salem,&nbsp;Heba A. Kashmery,&nbsp;Ismail A. Abdelhamid,&nbsp;Mohamed Abdel-Megid,&nbsp;Ahmed M. Elgamal","doi":"10.1186/s13065-026-01856-4","DOIUrl":"10.1186/s13065-026-01856-4","url":null,"abstract":"<div><p>The emergence of antibiotic-resistant microbes requires the development of superior antimicrobial materials. This study focuses on the chemical modification of xanthan gum (XG) by free-radical graft copolymerization with butyl acrylate (BuA) initiated by potassium persulfate (KPS), to significantly improve its structural, thermal, and functional characteristics. The relationship between reaction parameters and grafting performance was comprehensively analyzed, focusing on grafting yield (G), homopolymer formation (H%), and grafting efficiency (GE). Optimal grafting conditions (0.6 M BuA, 8 × 10^–2 M KPS, 60 °C, and 120 min) produced a graft copolymer with up to a 500% grafting yield. Zinc oxide nanoparticles (ZnO NPs) were manufactured in situ and integrated into the grafted copolymer matrix, resulting in the formation of the xanthan gum grafted by butyl acrylate with zinc oxide (XG-g-BuA/ZnO) nanocomposite. The structural, thermal, morphological, and crystalline properties were investigated utilizing FTIR, TGA, SEM/EDX/mapping, TEM, and XRD to validate successful grafting and incorporation of ZnO nanoparticles into the copolymer matrix. Thermal studies showed that the grafted XG displayed improved thermal stability compared to its unmodified counterpart, with thermal resistance increasing with increasing BuA content. The antibacterial efficacy was evaluated against Gram-positive bacteria (<i>Staphylococcus aureus</i> and <i>Bacillus subtilis</i>) and Gram-negative bacteria (<i>Escherichia coli</i> and <i>Klebsiella pneumoniae</i>), demonstrating substantial inhibitory effects, with the nanocomposite attaining up to 87.6%, 42.9%, 85.7% and 72.6% reduction in bacterial growth against <i>Staphylococcus aureus</i>, <i>Bacillus subtilis</i>, <i>Escherichia coli</i> and <i>Klebsiella pneumoniae</i>, respectively. These outcomes highlight the potential of the fabricated biopolymer nanocomposite as a sustainable and efficient platform for antimicrobial applications in both packaging and biomedical fields.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01856-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148161362","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":"New benzoxanthenone and benzanthrone derivatives from Tricholaena teneriffae L. roots: structure elucidation, α-amylase inhibitory activity and molecular docking studies","authors":"Henda Keskes,&nbsp;Ines Dhouib,&nbsp;Emna Khdhiri,&nbsp;Houcine Ammar,&nbsp;Anthony Abou Dib,&nbsp;Jean-Hugues Renault,&nbsp;Noureddine Allouche,&nbsp;Bassem Khemakhem,&nbsp;Hichem Ben Salah","doi":"10.1186/s13065-026-01833-x","DOIUrl":"10.1186/s13065-026-01833-x","url":null,"abstract":"<div><p>The ethyl acetate extract of <i>Tricholaena teneriffae</i> L. roots exhibited significant α-amylase inhibitory activity. Phytochemical analysis of this extract led to the isolation of seven natural products: five 12<i>H</i>-benzo[<i>a</i>]xanthen-12-one derivatives (<b>1–5</b>) and two 7<i>H</i>-benzo[<i>de</i>]anthracen-7-one derivatives (<b>6–7</b>). Among them, compounds <b>1</b>, <b>3</b>, <b>4</b>, <b>5</b>, and <b>7</b> are reported here for the first time as new natural derivatives. Structural elucidation was performed via 1D and 2D NMR spectroscopy, allowing for a precise determination of the substitution patterns of both the benzo[<i>a</i>]xanthen-12-one and benzo[<i>de</i>]anthracen-7-one frameworks. Among them, compounds <b>6</b> (IC₅₀ = 0.308 ± 0.015 μM) and <b>4</b> (IC₅₀ = 0.480 ± 0.024 μM) showed the most potent inhibitory effects. Molecular docking studies revealed that the presence of both hydroxyl and methoxy groups, as in compound <b>6</b>, enhances inhibition through strong hydrogen bonding and π-type interactions, while methoxy substitution on ring C, as in compound <b>4</b>, increases binding affinity via interactions with Glu233 and Asp197. The photophysical properties of seven isolated dyes were examined in dichloromethane by UV–visible and fluorescence spectroscopy. Hydroxyl and methoxy substituents enhanced electron donation, leading to red-shifted absorption and emission compared to the unsubstituted analogue <b>2</b>. The strongest red shift was observed for the dimethoxylated dye <b>3</b>, while the hydroxylated dye <b>6</b> exhibited higher intensities than its methoxy analogue <b>7</b>. These results highlight the importance of specific position and nature of substituents in modulating α-amylase inhibition and photophysical behavior in root-derived metabolites.</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":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01833-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148147976","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":"Pyrazolo-triazole/hydrazono ester EPMT as a mixed-type corrosion inhibitor for low-carbon steel in 0.5 M HCl: electrochemical, surface, and computational evidence","authors":"Ghada G. El-Bana,&nbsp;Mostafa E. Salem,&nbsp;Ahmed Z. Ibrahim,&nbsp;Ahmed D. H. Deeb,&nbsp;Mohamed Abdel-Megid,&nbsp;Mansour Alsarrani,&nbsp;Mokhtar Al-Abyadh,&nbsp;Mostafa A. A. Mahmoud","doi":"10.1186/s13065-026-01857-3","DOIUrl":"10.1186/s13065-026-01857-3","url":null,"abstract":"<div><p>A newly synthesized pyrazolo-triazole/hydrazono ester derivative, EPMT, was evaluated as a corrosion inhibitor for low-carbon steel (LCS) in 0.5 M HCl using weight-loss (WL) measurements, open-circuit potential (OCP), potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), surface analysis, density-functional theory (DFT), and Monte Carlo (MC) adsorption modeling. The novelty of the work lies not only in the inhibitor performance, but also in the molecular scaffold itself: the EPMT framework merges a pyrazolo-triazole platform with a hydrazono ester/thioether functionality and therefore concentrates multiple adsorption-active centers (N, O, and S atoms together with extended pi-conjugation) within a single molecule. Structural confirmation was supported by FT-IR, 1 H NMR, 13 C NMR, and EI-MS data consistent with the assigned EPMT structure, including the reported molecular-ion peak at m/z 580.40. Experimentally, EPMT showed a strong concentration-response relationship, with WL inhibition efficiency rising from 59.09% at 50 ppm to 93.45% at 300 ppm and 298 K, while remaining 76.00% even at 328 K. PDP and EIS independently confirmed the same trend: the corrosion current density decreased from 0.161 to 0.010 × 10^− 3 A cm^− 2, whereas the charge-transfer resistance increased from 100 to 1451 ohm cm², corresponding to 93.78% and 93.11% inhibition, respectively, at 300 ppm. SEM and AFM comparisons showed that the acid-roughened steel surface was restored toward the polished state in the presence of EPMT. The tabulated DFT descriptors and MC adsorption energies further support strong adsorption of EPMT on Fe(110), consistent with mixed physisorption-chemisorption and effective surface blocking. Overall, the combined gravimetric, electrochemical, surface, and computational results demonstrate that EPMT is an efficient inhibitor for low-carbon steel in 0.5 M HCl.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01857-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148148060","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":"AQbD-driven RP-HPLC method for complete resolution of pantoprazole regioisomeric impurities with integrated multi-dimensional sustainability assessment","authors":"Thirupathi Reddy Gaddam,&nbsp;Chinna Gangi Reddy Nallagondu,&nbsp;Narendra Kumar Masani,&nbsp;Aparna Devi Kareti,&nbsp;Hanuman Reddy Vemulapati,&nbsp;Hemanth Kumar Chanduluru","doi":"10.1186/s13065-026-01852-8","DOIUrl":"10.1186/s13065-026-01852-8","url":null,"abstract":"<div><p>Pantoprazole is a widely prescribed proton pump inhibitor, and accurate control of its related substances is essential to ensure drug quality and patient safety. However, existing pharmacopeial and reported chromatographic methods often fail to achieve adequate resolution between the critical regioisomeric impurities D and F, resulting in their co-quantification. This study aimed to develop a robust, stability-indicating, and environmentally responsible RP-HPLC method for the simultaneous determination of pantoprazole and its six related substances. A systematic quality-by-design approach was employed, integrating risk assessment and Central Composite Design to optimize critical chromatographic parameters. The optimized method achieved complete baseline separation of all impurities, including the challenging D/F regioisomeric pair, with resolution values greater than 2.0 and a total runtime of less than 12 min. Method validation, performed in accordance with ICH Q2(R2), demonstrated satisfactory accuracy (recoveries of 96.8–99.7%), precision (%RSD &lt; 2.0%), and excellent linearity (<i>r</i> &gt; 0.998). The environmental and operational sustainability of the method was confirmed using multiple assessment tools, including AGREE, MoGAPI, BAGI, RAPI and RGB12, indicating a favorable greenness and overall performance profile. Overall, the proposed method provides a reliable, efficient, and sustainable analytical solution for routine impurity profiling of pantoprazole, with improved selectivity and robustness compared to existing methods, supporting its application in pharmaceutical quality control and regulatory settings.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13440174/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148142311","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":"Fabrication of Fe–Mn mixed oxide nanosheets via microwave assistance as an advanced probe for ultra-sensitive nepafenac sensing in diverse matrices; paving the way for future applications","authors":"Kholoud R. El-Emam,&nbsp;Amal A. El-Masry,&nbsp;Heba Elmansi,&nbsp;Nadia S. El-Gohary","doi":"10.1186/s13065-026-01810-4","DOIUrl":"10.1186/s13065-026-01810-4","url":null,"abstract":"<div><p>A novel colorimetric sensing platform for the ultra-sensitive detection of nepafenac (NEP) is investigated based on mesoporous Fe–Mn bimetal oxide nanosheets synthesized <i>via</i> a rapid microwave-assisted method. The incorporation of microwave irradiation represents a key innovation, enabling energy-efficient synthesis while enhancing structural uniformity, surface area, and catalytic performance. Comprehensive characterization using transmission electron microscopy (TEM) confirmed the formation of interconnected nanosheets, while X-ray diffraction (XRD) analysis shows a poorly crystalline mixed Fe–Mn oxide, whose nanoscale disorder enhances surface activity and redox cycling, making it highly effective for oxidative applications. Fourier-transform infrared (FTIR) spectroscopy verified metal–oxygen–metal (Fe–O–Mn) framework formation, and energy-dispersive X-ray (EDX) spectroscopy confirmed homogeneous elemental distribution. The fabricated Fe–Mn mixed oxide nanosheets exhibited excellent oxidase-like activity, catalyzing the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to its blue-coloured oxidized product (oxTMB). In the presence of NEP, a significant decrease in blue colour intensity was observed due to NEP-induced inhibition, enabling accurate quantification. Under optimized conditions, the sensor demonstrated outstanding sensitivity with a detection limit as low as 0.15 ng/mL and a linear range of 0.5–25.0 ng/mL. The method was successfully applied to determine NEP in commercial eye drop formulations and synthetic aqueous humour, with high recovery percentages (99.61% and 99.62%, respectively), confirming its practical applicability. Additionally, the environmental sustainability of the approach was critically assessed using multiple contemporary greenness evaluation tools (ComplexMoGAPI, AGREE, AGSA and BAGI), confirming its alignment with green analytical chemistry principles. This study demonstrates the synergistic benefits of microwave-assisted synthesis and rational nano-catalyst design, offering a promising platform for future applications in pharmaceutical analysis and clinical diagnostics.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01810-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148142324","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":"Analysis of aroma compounds in barbecued mutton during storage and exploration of customer preferences","authors":"Aygul Alim","doi":"10.1186/s13065-026-01851-9","DOIUrl":"10.1186/s13065-026-01851-9","url":null,"abstract":"<div><p>Kebab (barbecued mutton) is a traditional meat product with a rich roasted meaty aroma and is highly preferred by consumers. In this study, the volatile flavor profiles of Kebab (barbecued mutton) were analyzed employing HS-GC-IMS and sensory evaluation techniques. Simultaneously, molecular docking was used to explore the mechanism of six key aroma compounds which are important for consumer pleasure and to infer and enhance the optimal storage conditions. A total of 61 volatile compounds were identified by HS-GC-IMS. The PCA demonstrated a correlation between the storage time and the volatile compounds in different tissue such as Lean (KL), fat (KF) and mixed (KM) of Kebab. The main characteristic compounds in sample KL are 2-hexanal, 2-nonanal, E-2-pentanal, 2-pentylfuran, butyl acetate, butyl 2-methylbutyrate, and 2-heptanone. Sample KF is characterized by trimethylamine, triethylamine and 1-hydroxy-2-propanone as its main compounds, while sample KM contains 2-octanol, 2-methylbutanal, and 2,3-butanedione as its main ones. When the storage time reached 28 days, sample KL maintained strong meaty and nutty aromas; in samples KM and KF, the fatty, sulfur, and sour aromas increased significantly. Compounds such as 5-methylfurfural, 2-pentylfuran, (E)-2-hexenal, 2-octanone, trans-2-nonanal, and 3-methylbutanol can cross the blood-brain barrier, thereby inducing a sense of pleasure. It is recommended that lean meat should be used in the processing of roasted meat products, as this helps maintain a pleasant meat flavor and reduces off-odors. The research offers theoretical foundation for the development of Kebab products.</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":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s13065-026-01851-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148051743","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":"Correction: Steam processing of Panax notoginseng with single-marker quantification: a green industrial standardization strategy","authors":"Yifei Ning,&nbsp;Nan Wang,&nbsp;Shaoqiong Tian,&nbsp;Yinxiong Liang,&nbsp;Ji Ma,&nbsp;Xiuming Cui","doi":"10.1186/s13065-026-01855-5","DOIUrl":"10.1186/s13065-026-01855-5","url":null,"abstract":"","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13217760/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148051738","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":"Sustainable electrochemical detection of benoxinate using MnO₂/MWCNT carbon paste electrode","authors":"Heba M. Hashem,&nbsp;Heba Elmansi,&nbsp;Rasha Abo Shabana,&nbsp;Heba Samir Elama","doi":"10.1186/s13065-026-01840-y","DOIUrl":"10.1186/s13065-026-01840-y","url":null,"abstract":"<div><p>A green electrochemical sensor utilizing pomegranate-peel-derived δ-MnO₂ nanoparticles combined with multiwalled carbon nanotubes was created as a carbon paste electrode (δ-MnO₂/MWCNTs/CPE) for the precise detection of benoxinate (BNX) in ophthalmic formulations. Cyclic voltammetry demonstrated that the modified electrode displayed the greatest electroactive surface area among the evaluated compositions, resulting in a significant improvement in BNX oxidation. An improved electrode formulation including 1.5% (w/w) MWCNTs and 1.5% (w/w) birnessite (δ-MnO₂) attained peak current responsiveness and analytical sensitivity. Under optimal conditions, the anodic peak current exhibited remarkable linearity with BNX content (r² = 0.999), whereas kinetic analyses indicated a diffusion-controlled electro-oxidation process. The sensor demonstrated remarkable selectivity, with signal changes of less than ± 2% in the presence of typical tear electrolytes, thus proving minimal interference. The suggested approach has elevated sensitivity and precision, featuring a low detection limit of 2.1 × 10⁻⁸ M and a quantification limit of 6.3 × 10⁻⁸ M. Due to its eco-friendly synthesis, durability, and analytical efficacy, the δ-MnO₂/MWCNTs/CPE platform is very appropriate for the trace-level measurement of BNX in standard pharmaceutical analysis.</p></div>","PeriodicalId":496,"journal":{"name":"BMC Chemistry","volume":"20 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13220416/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148051798","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":"Preparation and performance of iron tailings based porous ceramsite material for Cd(II) adsorption: evidence of the dominant action mechanism","authors":"Shaoguang Hua,&nbsp;Dejian Pei,&nbsp;Huihui Zhou,&nbsp;Guijian Liu,&nbsp;Anqi Zhu","doi":"10.1186/s13065-026-01848-4","DOIUrl":"10.1186/s13065-026-01848-4","url":null,"abstract":"<div><p>This study investigated the feasibility of preparing ceramsite from iron tailings for cadmium (Cd(II)) adsorption. Based on Si-Ca ceramsite compositional design, the Cd(II) adsorption mechanism of ceramsite fired in different preparation process were studied. The Cd(II) adsorption properties and pore structure were detected, and the phase composition and crystal morphology were investigated using XRD, DSC, BET, SEM–EDS and XPS. Results demonstrated that: the ceramsite sample No. 3 (fired at 1150 °C for 30 min) formed akermanite, gehlenite, and diopside phases. It achieved fast adsorption kinetics (80.79% removal in 2 h) and high equilibrium capacity (95.57% removal in 21 h) for Cd(II), with confirmed environmental safety. Adsorption followed pseudo-second-order kinetics and the Langmuir isotherm, indicating combined various processes dominated by chemisorption. The small aperture size (5.19 μm) and high specific surface area (2.1 m²/g) supported physical adsorption. The high-valent sulfur was reduced to S²⁻ in preparation process for CdS chemical precipitation. The Cd(II) adsorption of the ceramsite sample No. 1-A through pore structure was mainly physical adsorption. The Cd(II) adsorption capacity of the ceramsite sample No. 1-I was deteriorated due to the change of pore structure caused by formation of forsterite ferroan. This work successfully repurposed iron tailings as a functional adsorption component, especially offering a novel strategy for valorizing high-sulfur iron tailings alongside other solid wastes.</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":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13393893/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148025314","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}