Results in Chemistry最新文献

{"title":"Herb-drug interaction between Dahuang-Gancao decoction and clozapine: A pharmacokinetic study in rats","authors":"Kejun Liu ,&nbsp;Zhizhong Xu ,&nbsp;Jianfeng Zhang ,&nbsp;Kaining Zhang ,&nbsp;Chunyan Wen ,&nbsp;Jindong Chen ,&nbsp;Qingjiang Lin ,&nbsp;Xianhua Zhang","doi":"10.1016/j.rechem.2025.102665","DOIUrl":"10.1016/j.rechem.2025.102665","url":null,"abstract":"<div><div>Dahuang-Gancao decoction (DGD) comprises <em>Rhei Radix et Rhizoma</em> and <em>Glycyrrhizae Radix et Rhizoma</em> at ratio of 4:1, which is usually applied for relieving clozapine-induced constipation in clinical practice. However, the herb-drug interactions involving antipsychotics with narrow therapeutic range have rarely been reported. We investigated a potential pharmacokinetic-based interaction between DGD and clozapine based on <em>in vitro</em> and <em>in vivo</em> studies. Rats received a single injection of clozapine (5 mg/kg, <em>i.v.</em>,) 30 min after pretreatment with DGD (<em>p.o.</em>) for 3 days or 14 days. The concentrations of clozapine and its metabolites in rat plasma were measured by high-performance liquid chromatography-tandem mass spectrometry. The effects of DGD on protein expression of cytochrome P450 (CYP450) <em>in vivo</em> and the binding of plasma proteins to clozapine <em>in vitro</em> were determined. After 3-day pretreatment with DGD, there were no significant changes in the pharmacokinetics of clozapine or its metabolites. A significant increase in certain pharmacokinetic parameters of clozapine was observed after 14-day pretreatment with DGD. Protein expression of CYP1A2 was inhibited <em>via</em> multiple dosage of DGD in time-dependent manner. The plasma protein binding rate in various concentrations of clozapine was reduced significantly <em>in vitro</em> after DGD therapy. The effects upon pharmacokinetics of clozapine after DGD pretreatment could be attributed to inhibition of CYP1A2 expression and a decrease in plasma protein binding. Hence, caution must be applied to some drugs with a narrow therapeutic index to avoid the potential risk of herb-drug interactions in clinical practice.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102665"},"PeriodicalIF":4.2,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"BIOSORBENT of brown algae (Lessonia nigrescen) for mercury ions (HG2+) removal from aqueous solution","authors":"William Edgar Heredia Peña ,&nbsp;Antonio Ernesto Durand Gamez ,&nbsp;Lilia Mary Miranda Ramos ,&nbsp;Pavel Kewin Delgado Sarmiento ,&nbsp;Stephanie Elena Sosa Pulcha ,&nbsp;Vitor de Cinque Almeida ,&nbsp;Hugo Guillermo Jiménez Pacheco","doi":"10.1016/j.rechem.2025.102703","DOIUrl":"10.1016/j.rechem.2025.102703","url":null,"abstract":"<div><div>Mercury contamination in water poses significant risks to both human health and ecosystems. This study developed a biosorbent using brown algae (<em>Lessonia nigrescens</em>) to remove Hg²⁺ ions from aqueous solutions. The biosorbent was prepared using biomass with particle sizes between 0.5 and 1.0 mm and treated with a 0.20 M CaCl₂ solution. Characterization of the materials was performed using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM) techniques. Adsorption experiments were conducted in a batch system, examining the effects of pH and contact time on adsorption efficiency. Results indicated that the biosorbent contains surface functional groups that significantly enhance Hg²⁺ ion biosorption. Additionally, pH variations within the tested range of 3.5 to 7.5 showed minimal impact on biosorption efficiency. Kinetic analysis revealed that the pseudo-second-order model best described experimental data, suggesting that chemisorption is the primary mechanism governing the process. The maximum adsorption capacity (qₑₓₚ) was found to be 26.87 mg g⁻¹. Additionally, equilibrium data were better fitted by the Freundlich isotherm model, indicating heterogeneous and multilayer adsorption behavior.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102703"},"PeriodicalIF":4.2,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caffeine–stabilized methylammonium lead iodide perovskites electrocatalyst for hydrogen evolution reaction","authors":"Dieketseng Tsotetsi ,&nbsp;Tumelo Seadira ,&nbsp;Olayemi Fakayode ,&nbsp;Pontsho Mbule ,&nbsp;Bakang M. Mothudi ,&nbsp;Mokhotjwa Dhlamini","doi":"10.1016/j.rechem.2025.102704","DOIUrl":"10.1016/j.rechem.2025.102704","url":null,"abstract":"<div><div>This study examined the electrocatalytic production of hydrogen gas using caffeine-stabilized methylammonium lead iodide (MAPbI₃) perovskite material. Crystallinity improvement was observed in 2Ɵ = 112 and 141 with the incorporation of caffeine. Additionally, MAPbI₃@Caffeine exhibited relatively stronger thermal stability than either MAPbI₃ or caffeine with a sublimation temperature of 243 °C. Charge transfer at the interface between the electrocatalyst and electrolyte was meticulously analyzed using Electrochemical Impedance Spectroscopy (EIS) whereby Graphite was ∼10.5 kꭥ, then Graphite-Caffeine, Graphite-MAPbI₃, and Graphite-MAPbI₃-Caffeine were ∼5.47, 12.6 and 4.37 kꭥ. Hydrogen production current increased gradually from the onset potentials of about −0.38, −0.29, −0.24 and −0.13 <em>V</em> (vs. RHE) for Graphite, Graphite-Caffeine, Graphite-MAPbI₃, and Graphite-MAPbI₃-Caffeine respectively, and finally approached a maximum at −2.5 V. The comprehensive examination revealed that hydrogen current increased with increasing incorporation of caffeine in the perovskite material. Pure graphite showcased a remarkable TOF of 24.79 s⁻¹, outperforming the modified Graphite-MAPbI₃, which recorded a TOF of 23.87 s⁻¹. In stark contrast, the catalytic performance of Graphite-MAPbI₃-Caffeine was significantly lower, with a TOF of only 6.85 s⁻¹. The graphite electrode demonstrated a noteworthy catalytic activity of 2.077 × 10⁻⁷ mol L⁻¹ s⁻¹, indicating its efficiency in facilitating reactions. In comparison, the modified graphite enhanced with MAPbI₃ exhibited a slightly elevated catalytic activity of 2.082 × 10⁻⁷ mol L⁻¹ s⁻¹, while the MAPbI₃-Caffeine combination exhibited a parallel performance with a catalytic activity of 2.079 × 10⁻⁷ mol L⁻¹ s⁻¹.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102704"},"PeriodicalIF":4.2,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neem fruit pulp extract mediated biosynthesis, characterization of zinc oxide nanoparticles, and evaluation of their antioxidant, anticancer, and catalytic properties","authors":"Bangaru Babu Alampally ,&nbsp;Sravanthi Pidamarthi ,&nbsp;Sreenivas Gandamalla ,&nbsp;Subba Rao Y ,&nbsp;Durga Bhavani A.K.","doi":"10.1016/j.rechem.2025.102697","DOIUrl":"10.1016/j.rechem.2025.102697","url":null,"abstract":"<div><div>Green synthesis of nanoparticles using biological extracts has gained immense attention due to its eco-friendly and simple approach. This study presents a novel, eco-friendly approach for synthesizing ZnO nanoparticles using Neem fruit pulp extract (NFPE) through a solvent combustion method. The synthesized ZnO NPs were characterized using Several characterization techniques, including UV–Vis spectroscopy, FTIR, XRD, SEM, TEM, DLS, and EDX, analysis. The ZnO NPs exhibited a UV–Vis absorption peak at 367 nm, confirming nanoparticle formation. FTIR analysis revealed functional groups in Neem fruit pulp extract that significantly contribute to the stabilization of the synthesized nanoparticles, and XRD revealed a hexagonal wurtzite structure with an average crystalline size of 42 nm. SEM and HR-TEM analyses showed spherical and rod-like morphologies with an average size of 35.5 nm, while DLS indicated a hydrodynamic size of 41.5 nm with a zeta potential of 15.1 mV. NFE-ZnO NPs demonstrated significant antioxidant activity (IC₅₀ values: DPPH = 68.30 μg/mL, H₂O₂ = 84.59 μg/mL, NO = 77.63 μg/mL). In the anticancer assay, a dose-dependent inhibition of A549 cells (lung cancer cells) was observed, with an IC₅₀ value of 50.2 μg/mL. The catalytic activity showcased efficient degradation of cotton blue dye and reduction of 4-nitrophenol. ZnO NPs were synthesized using NFPE via solvent combustion and characterized by spectroscopic and microscopic method. The NPs exhibited notable antioxidant, anticancer, and catalytic activity, particularly in reducing Cotton blue dye and 4-nitrophenol, highlighting their potential in environmental and biomedical applications.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102697"},"PeriodicalIF":4.2,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of new pyrido[2,3-b]pyrazine derivatives: Crystal structures, spectroscopic characterizations, molecular docking studies, DFT calculations, and antibacterial activity","authors":"Mohamed El Yaqoubi ,&nbsp;Soufyane Yassara ,&nbsp;Mouad Lahyaoui ,&nbsp;Noura Aflak ,&nbsp;Emese Gal ,&nbsp;Alexandra Pop ,&nbsp;Luiza Ioana Gaina ,&nbsp;Fouad Ouazzani Chahdi ,&nbsp;Youssef Kandri Rodi","doi":"10.1016/j.rechem.2025.102695","DOIUrl":"10.1016/j.rechem.2025.102695","url":null,"abstract":"<div><div>Pyrido[2,3-<em>b</em>]pyrazine derivatives have attracted considerable attention in medicinal chemistry due to their multifaceted biological properties. In this work, a novel and efficient synthetic strategy was developed for the preparation of 7-bromo-1,4-dihydropyrido[2,3-<em>b</em>]pyrazine-2,3-dione and its N1,N4-dialkylated derivatives (2a–2f) using phase-transfer catalysis under mild conditions. The synthesized compounds were characterized by NMR spectroscopy, mass spectrometry, and melting point analysis. To evaluate their antibacterial potential, minimum inhibitory concentrations (MICs) were determined against clinically relevant bacterial strains, including <em>Escherichia coli</em>, <em>Staphylococcus aureus</em>, <em>Pseudomonas aeruginosa</em>, and <em>Salmonella</em> spp. Compounds 2a and 2c exhibited the most significant activity, with compound 2d also showing noteworthy inhibition against <em>Escherichia coli</em>.</div><div>Complementary computational studies were undertaken to rationalize the observed biological activities. Density Functional Theory (DFT) was used to calculate electronic parameters such as HOMO-LUMO energy gaps, chemical hardness, electrophilicity, dipole moment, and molecular electrostatic potential (MEP) surfaces. These calculations revealed that compound 2a had the highest reactivity, while 2c exhibited the strongest electrophilic character and polarizability. Molecular docking simulations further demonstrated strong interactions of these compounds—especially 2c—with DNA gyrase from various bacterial pathogens. Compound 2c showed superior binding affinities and multiple hydrogen bonding interactions across bacterial targets, aligning with experimental MIC results. These findings confirm the potential of alkylated pyridopyrazines as a scaffold for developing new antibacterial agents, supported by both in vitro and in silico analyses.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102695"},"PeriodicalIF":4.2,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of a green-synthesized heteropolysaccharide with promising diabetic wound healing potential","authors":"Imen Trabelsi ,&nbsp;Naourez Ktari ,&nbsp;Wafa Gargouri ,&nbsp;Sirine Ben Slima ,&nbsp;Sana Bardaa ,&nbsp;Amina Maalej ,&nbsp;Lobna Jlaiel ,&nbsp;Mohamed Chamkha ,&nbsp;Riadh Ben Salah","doi":"10.1016/j.rechem.2025.102705","DOIUrl":"10.1016/j.rechem.2025.102705","url":null,"abstract":"<div><div>Natural polysaccharides are increasingly explored for use in biomaterials, such as wound dressings, due to their excellent biocompatibility, low toxicity, and beneficial biomedical properties. This research investigates a natural polysaccharide hydrogel prepared using <em>Laurus nobilis</em> leaves (LNSP) and its <em>in vivo</em> potential to facilitate wound healing of a diabetic animal model. The results indicated a molecular weight of 105.37 kDa for the newly extracted polysaccharide. This heteropolysaccharide is composed of glucose (31.22 %), galactose (20.91 %), mannose (15.25 %), xylose (14.85 %), ribose (9.2 %), and rhamnose (8.57 %). Our findings showed that LNSP polysaccharide possesses antibacterial activity, acts as a potential antioxidant source, and exhibits no cytotoxic effects on human HEK-293 cells. In addition to displaying typical hydrogel characteristics, it also presents properties that promote wound re-epithelialization, replicate the structure of skin and stimulate skin regeneration in a diabetic rat model. Notably, it significantly improved the rate of wound contraction, reaching 100 % after 14 days. Histological assessment demonstrated that the LNSP hydrogel enhances re-epithelization and epidermal regeneration in diabetic rats compared to other treatment groups. This novel polysaccharide has been explored for dual applications: as a wound dressing and as a medium for direct drug delivery to the lesion site.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102705"},"PeriodicalIF":4.2,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green efficient dual-strategy for critical metal recovery from spent LIBs: Nipa palm shell-derived cellulose and [C4H9NH3][Cyanex 272] ionic liquid extraction","authors":"Nghiem The Trung Do ,&nbsp;Minh Khoi Vo ,&nbsp;Duy Tan Nguyen ,&nbsp;Lan Chi Le ,&nbsp;Dinh Hong Chinh Do ,&nbsp;Quang Nhat Tran ,&nbsp;Huu-Quang Nguyen ,&nbsp;My-Chi Nguyen ,&nbsp;Jaebeom Lee ,&nbsp;Hai Son Truong-Lam","doi":"10.1016/j.rechem.2025.102702","DOIUrl":"10.1016/j.rechem.2025.102702","url":null,"abstract":"<div><div>Green and environmentally friendly natural adsorbents are prominent value-added products from agricultural waste materials. Herein, microcrystalline cellulose (MCC) was produced from nipa palm shells (with a purity of 96.2 %), and its application in the metal ion recovery was investigated. The surface morphology and chemical properties of the synthesized MCC were characterized using scanning electron microscopy and spectroscopic methods. While the as-synthesized MCC demonstrated effective metal adsorption capability, it exhibited low selectivity for nickel (II) ion (Ni²⁺) and cobalt (II) ion (Co²⁺). To overcome this limitation, we suggest the simultaneous use of the synthesized MCC as an adsorbent for lithium ion (Li⁺) and a <em>n</em>-butylamine phosphinate ionic liquid [C₄H₉NH₃][Cyanex 272] as an organic extractant for the efficient recovery of Ni²⁺ and Co²⁺ contained in spent lithium-ion batteries. Various parameters affecting the efficiency of the extraction process were optimized, including pH, reagent ratios and extraction time. The results revealed that using both MCC and [C₄H₉NH₃][Cyanex 272] ionic liquid considerably improved the metal extraction efficiency, especially for Co²⁺. The Ni²⁺ and Co²⁺ separation efficiency by the ionic liquid was found to be higher than 90 %, highlighting the potential of this combined strategy for recycling valuable metals from spent batteries.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102702"},"PeriodicalIF":4.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The prediction of hydroxyapatite crystallinity under various ion doping using machine learning","authors":"Agrin Febrian Pradana ,&nbsp;Intan Septia Sari ,&nbsp;Andreas Federico ,&nbsp;Rio Sudwitama Persadanta Kaban ,&nbsp;Yusril Yusuf ,&nbsp;Donanta Dhaneswara ,&nbsp;Muhammad Taufik ,&nbsp;Hartatiek ,&nbsp;Iis Sopyan ,&nbsp;Jaka Fajar Fatriansyah","doi":"10.1016/j.rechem.2025.102701","DOIUrl":"10.1016/j.rechem.2025.102701","url":null,"abstract":"<div><div>The ability to fine-tune and control the crystallinity of hydroxyapatite (HAp) is essential for its clinically applications. One of the effective methods to alter HAp crystallinity is by introducing ion doping. In this research, machine learning (ML) methods of K-nearest neighbor (KNN), CatBoost, XGBoost, and artificial neural networks (ANN) were used to predict the crystallinity of HAp under influence of various doping ions of strontium (Sr²⁺), zinc (Zn²⁺), silver (Ag⁺), fluoride (F⁻), nickel (Ni²⁺), Iron (Fe³⁺), Erbium (Er³⁺), boron (B³⁺), aluminum (Al³⁺), barium (Ba²⁺), tungsten (W⁶⁺), magnesium (Mg²⁺) and sintering temperature and time. Although pH, precursor type, and synthesis method are important, the pre-screening model built is focused on doping ion and sintering parameters due to the complete data availability. The results reveal that CatBoost and XGBoost performed well in prediction performance and their reliability, with maximum R² scores of 83.9 % (k-fold of 83.0 %, k = 5) and 95.6 % (k-fold of 81.9 %, k = 5), respectively. Further tests of Diebold-Mariano showed that the there are no significant difference of prediction performance between XGBoost and CatBoost. However, XGBoost is preferable over CatBoost due to its higher k-fold performance than CatBoost and its success is attributed to its ability to handle small, bimodally distributed datasets. The feature analyses demonstrated that Mg²⁺ ion doping significantly reduces HAp crystallinity. Our finding also showed that the addition of Mg²⁺ and Zn²⁺ ion doping to Hap is preferable to control crystallinity which was confirmed by DFT study. These findings validate the use of ML models for pre-screening ion-doped HAp, offering an efficient tool for optimizing its properties for clinical applications. Despite these promising results, the model has limitations originating from the small, bimodal dataset and the exclusion of other crucial synthesis parameters, which may not capture the full complexity of ion doping effects on HAp.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102701"},"PeriodicalIF":4.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of adding nanoparticles into the oxygenated fuel blends on engine performance and emissions characteristics of NOX and PM in diesel engines: A comprehensive review","authors":"Mohammed A. Fayad ,&nbsp;Raghad R. Mahdi ,&nbsp;Amera A. Radhi ,&nbsp;Suha A. Mohammed ,&nbsp;Wissam H. Alawee ,&nbsp;Miqdam T. Chaichan ,&nbsp;Khawla S. Khashan ,&nbsp;Hayder A. Dhahad","doi":"10.1016/j.rechem.2025.102699","DOIUrl":"10.1016/j.rechem.2025.102699","url":null,"abstract":"<div><div>Recently, the smaller sizes of nanoparticles (1–100 nm) were used in several applications such as biotechnology, engineering, internal combustion engines and medical sciences. Furthermore, the researchers inside scientific community highlighted on using nano additives into the diesel fuel, neat biodiesel or and biodiesel blends to enhance the thermophysical properties of nanofluid, stability aspects, emission characteristics, and combustion behaviour of diesel engine. This article provides overview of the contribution several of nanoparticles in reduce engine emissions and improve the process of combustion when they adding to the oxygenated fuel blends. Different types and concentrations of nanoparticles can be adding to the fuels to improve the fuel properties by enhancing the stability and physical properties of fuel to help the transport sector in meet stringent emission regulations. The impact of nanoparticles addition to the fuels on emissions of nitrogen oxide (NO_X) and characteristics of particulate matter (PM) will be focused through collected data from the literatures that have been done along the earlier years. It is obtained that the results from adding nanoparticles to the oxygenated fuels are very encouraging because of multi-improvement in chemical and physical properties of nanofluid such as medium of high reactive for combustion, high surface to volume ratio, heat and mass transport properties. According to the several publications, it is found that the addition of nanoparticles to the renewable fuel blends reduced the emissions of NO_X and PM (concentrations and number) than to the absence nano additives into the oxygenated fuels. In contrast, large size of PM produced as proved in several publications with adding nano additives to the oxygenated fuels in comparison with neat fuel blends.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102699"},"PeriodicalIF":4.2,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NiCo2S4@graphene nanocomposites as high-performance cathode materials with enhanced rate capability for Lithium-ion batteries","authors":"Mursaleen Shahid ,&nbsp;Amtul Basit ,&nbsp;Nayan Banik ,&nbsp;Taimoor Abbas ,&nbsp;Renu Sharma ,&nbsp;Subbulakshmi Ganesan ,&nbsp;C.P. Surya ,&nbsp;Subhashree Ray ,&nbsp;Bekzod Madaminov ,&nbsp;Mirjalol Ismoilov Ruziboy Ugli","doi":"10.1016/j.rechem.2025.102700","DOIUrl":"10.1016/j.rechem.2025.102700","url":null,"abstract":"<div><div>In this study, we present the preparation and electrochemical performance (ECP) of NiCo₂S₄@graphene nanocomposites as high-performance cathode materials for lithium-ion batteries (LIBs). Hydrothermal synthesis in a single step was employed to fabricate the composite, enabling uniform anchoring of NiCo₂S₄ nanoparticles on the graphene matrix. Structural characterization using XRD, Raman spectroscopy, SEM, and BET investigation revealed the successful formation of the composite with a mesoporous architecture and improved surface area. Electrochemical testing revealed that the NiCo₂S₄@graphene electrode delivered a high initial discharge capacity (DC) of 113.4 mAh g⁻¹ at 0.1C, significantly surpassing 97.5 mAh g⁻¹ observed for pristine NiCo₂S₄. Under a high current rate (CR) of 5C the composite achieved 58.02 mAh g⁻¹, whereas the unmodified sample reached only 27.78 mAh g⁻¹, confirming its improved capability for fast charge and discharge. EIS showed a marked reduction in charge transfer resistance (R_CT) from 138 Ω (NiCo₂S₄) to 64 Ω (NiCo₂S₄@graphene), highlighting improved interfacial charge transport. Additionally, capacity retention after 30 cycles at various current rates was 95% for the composite, compared to 91% for pristine NiCo₂S₄. The enhanced electrochemical behavior stems from the integrated contribution of the interaction between the conductive graphene matrix and the redox-active NiCo₂S₄ nanoparticles, which together improve electron mobility, structural stability, and ion diffusion. This outcome underscores the suitability of NiCo₂S₄@graphene composites for high-performance LIB applications.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102700"},"PeriodicalIF":4.2,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}