Chemical Papers最新文献_第2页

Investigation on medium-temperature carbon dioxide capture performance over zeolite supported CaO adsorbents: synthesis and performance evaluation 沸石支撑氧化钙吸附剂的中温二氧化碳捕集性能研究：合成与性能评估

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-29 DOI: 10.1007/s11696-025-03899-8

Xing Gang Zhang, Archina Buthiyappan, Abdul Aziz Abdul Raman, Hendrik Simon Cornelis Metselaar, Jegalakshimi Jewaratnam, Yee Seng Tan

{"title":"Investigation on medium-temperature carbon dioxide capture performance over zeolite supported CaO adsorbents: synthesis and performance evaluation","authors":"Xing Gang Zhang, Archina Buthiyappan, Abdul Aziz Abdul Raman, Hendrik Simon Cornelis Metselaar, Jegalakshimi Jewaratnam, Yee Seng Tan","doi":"10.1007/s11696-025-03899-8","DOIUrl":"10.1007/s11696-025-03899-8","url":null,"abstract":"<div><p>This study aimed to develop various CaO/zeolite adsorbents tailored for mid-temperature CO₂ adsorption. It investigated the CO₂ uptake efficiency of these adsorbents during carbonation–decarbonation cycles, highlighting the effect of CaO loading on the adsorption efficiency of adsorbents produced by different synthesis methods. CO₂ temperature-programmed desorption (CO₂-TPD) confirmed the CO₂ uptake capacity of CaO/USY at medium temperatures (300 °C). Among the CaO/zeolite adsorbents synthesized, the 10% CaO/USY exhibited the highest adsorption capacity at 300 °C, with a CO₂ uptake of 34.94 mmol·kg⁻<sup>1</sup> during the first cycle. The adsorbent also maintained its CO₂ capacity at 21 mmol·kg⁻<sup>1</sup> over the next nine cycles. Physicochemical analysis revealed that the porous volume of the 10% CaO/USY adsorbent was 0.28 cm<sup>3</sup>·g⁻<sup>1</sup>, and its substantial surface area was 506.20 m<sup>2</sup>·g⁻<sup>1</sup>, as determined through N₂ adsorption measurements. Characterization using FTIR and FESEM confirmed the successful loading and uniform dispersion of CaO on USY, respectively. X-ray diffraction (XRD) analysis revealed that 10% CaO/USY exhibited a smaller CaO crystallite size (29 nm) compared to bulk CaO (65 nm) and 15% CaO/USY (32 nm). Additionally, XRD identified the presence of calcium silicate salts (CaSiO₃ and Ca₂SiO₄) and calcium aluminate salts (Ca₁₂Al₁₄O₃₃), which reduce the CO₂ capture capacity but enhance cyclic stability. This finding suggests a potential approach to enhancing the effectiveness of adsorbents by optimizing the conversion of CaO into these salts. The results provide valuable insights for advancing and scaling up CaO/zeolite adsorbents for CO₂ capture.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1927 - 1943"},"PeriodicalIF":2.2,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667874","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}

引用次数: 0

Efficient dehydrogenation of dodecanol to dodecanal in a continuous fixed bed reactor over supported Cu catalyst

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-28 DOI: 10.1007/s11696-025-03903-1

Shanshan Cao, Zhong Wu, Weiyou Zhou, Zhonghua Sun, Junfeng Qian, Mingyang He, Qun Chen

{"title":"Efficient dehydrogenation of dodecanol to dodecanal in a continuous fixed bed reactor over supported Cu catalyst","authors":"Shanshan Cao, Zhong Wu, Weiyou Zhou, Zhonghua Sun, Junfeng Qian, Mingyang He, Qun Chen","doi":"10.1007/s11696-025-03903-1","DOIUrl":"10.1007/s11696-025-03903-1","url":null,"abstract":"<div><p>The anaerobic dehydrogenation of dodecanol to dodecanal has been investigated in a continuous fixed bed reactor over a series of Cu-based catalysts with different supports (SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, ZnO and MgO). These catalysts have been systematically characterized by XRD, H<sub>2</sub>-TPR, NH<sub>3</sub>-TPD, CO<sub>2</sub>-TPD, XPS and N<sub>2</sub> adsorption/desorption measurements. And the results indicate that the support has significant effect on the physicochemical properties of the catalysts and their catalytic performances, and Cu/SiO<sub>2</sub> exhibited the highest catalytic activity in the dehydrogenation. Synergistic effect between Cu<sup>+</sup> and Cu<sup>0</sup> species has been observed, and proper ratio of Cu<sup>+</sup>/Cu<sup>0</sup> is believed to be able to improve the catalytic performance of Cu-based catalysts. The surface acidity and basicity demonstrate significant effect on the distribution of the products and the selectivity to aldehyde. Under the optimized conditions, an 82.3% conversion of dodecanol with an excellent 98.9% selectivity toward dodecanal could be obtained. Moreover, the catalytic performance of Cu/SiO<sub>2</sub> kept almost steady in 200 h, indicating its good stability and application potential in the dehydrogenation process.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1993 - 2004"},"PeriodicalIF":2.2,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667902","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}

引用次数: 0

Synthesis and characterization of boron oxide nanofibers reinforced methacrylate composites and their flexural strength evaluations

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-27 DOI: 10.1007/s11696-025-03901-3

Aslı Dörtler-Kesici, Nadir Kiraz

{"title":"Synthesis and characterization of boron oxide nanofibers reinforced methacrylate composites and their flexural strength evaluations","authors":"Aslı Dörtler-Kesici, Nadir Kiraz","doi":"10.1007/s11696-025-03901-3","DOIUrl":"10.1007/s11696-025-03901-3","url":null,"abstract":"<div><p>This study focuses on the synthesis of boron oxide nanofibers and their use as reinforcement materials in composites. Nanofiber synthesis was carried out by electrospinning method from solutions containing of boric acid (H<sub>3</sub>BO<sub>3</sub>), polyvinylpyrrolidone (PVP), and sodium dodecyl sulfate (SDS). Electrospun nanofibers were characterized by scanning electron microscopy (SEM) and thermogravimetric analysis (TGA) to find out the morphological structure, fiber diameter size, and chemical properties that change with temperature. Then they were calcined with different thermal programs. B<sub>2</sub>O<sub>3</sub> formation in calcined nanofibers was proven by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The diameter distribution of the calcined fibers was visualized by SEM, with an average fiber diameter size of 76.9 ± 3.7 nm. Calcined nanofibers were functionalization with [3 (Methacryloxy)propyl] trimethoxysilane for the composites productions. The matrix was prepared from bisphenol A-glycidyl methacrylate, triethylene glycol dimethacrylate and diurethanedimethacrylate monomers. Three-point bending tests were conducted to measure the flexural strength of B<sub>2</sub>O<sub>3</sub> reinforced composites, and it was determined that 7% wt of B<sub>2</sub>O<sub>3</sub> nanofiber reinforcement increased the flexural strength of the pure matrix by 123.2%. When the flexural strengths of B<sub>2</sub>O<sub>3</sub> fibers and particles were compared, composites reinforced with B<sub>2</sub>O<sub>3</sub> particles showed 42.2% less mechanical strength.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1959 - 1971"},"PeriodicalIF":2.2,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668427","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}

引用次数: 0

Development of a sensitive and accurate method for the simultaneous determination of climbazole and clotrimazole using β-cyclodextrin assisted liquid–liquid microextraction based on switchable solvent 基于可切换溶剂的β-环糊精辅助液液微萃取法同时测定攀唑和克霉唑的灵敏、准确方法的建立

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-25 DOI: 10.1007/s11696-025-03900-4

Bahare Arabkhani, Nasser Goudarzi, Mansour Arab Chamjangali

{"title":"Development of a sensitive and accurate method for the simultaneous determination of climbazole and clotrimazole using β-cyclodextrin assisted liquid–liquid microextraction based on switchable solvent","authors":"Bahare Arabkhani, Nasser Goudarzi, Mansour Arab Chamjangali","doi":"10.1007/s11696-025-03900-4","DOIUrl":"10.1007/s11696-025-03900-4","url":null,"abstract":"<div><p>This paper offers a novel approach featuring homogenous liquid-phase microextraction and beta-cyclodextrin for detecting azole antifungal medicines like clotrimazole and climbazole in diverse matrices. Switchable hydrophilicity solvents can be miscible or immiscible based on sample pH and vary from monophasic to biphasic depending on a trigger as extraction solvents. Adding beta-cyclodextrin to the extraction phase may boost efficiency by promoting supramolecular host–guest azole antifungal compounds. This order used dipropylamine for extraction. The recommendation is greener, faster, easier, reproducible, and cheaper. The method was easier without centrifugation. The work examined the impact of operational extraction factors including concentrations of beta-cyclodextrin, volume of dipropylamine, amounts of acid/base solution, and ionic strength of the sample. Under optimal conditions, vortex assisted-switchable hydrophilicity solvents-homogeneous liquid-phase microextraction, extraction time: around 2 min, showed good linearity in the range of 40.0–11000.0 ng.mL<sup>−1</sup> and determination coefficients 0.9998 for climbazole, 10.0–11000.0 ng.mL<sup>−1</sup> determination coefficients 1.0000 for clotrimazole, and the limits of detection were found to be 12.0 ng.mL<sup>−1</sup> for climbazole and 3.0 ng.mL<sup>−1</sup> for clotrimazole. The vortex-assisted-beta-cyclodextrin-Switchable hydrophilicity solvents-homogeneous liquid-phase microextraction method quantified azole fungicides in water, milk, plasma, and tablet samples. Spiking recoveries of 98.2–101.8% revealed the approach can detect imidazole fungicides in samples.</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":"79 3","pages":"1945 - 1957"},"PeriodicalIF":2.2,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668432","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}

引用次数: 0

Silver nanoparticles as an effective tool for eradication and control of biofilm-forming Staphylococcus epidermidis isolates

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-23 DOI: 10.1007/s11696-024-03858-9

Mohamed M. Gharieb, Amal F. Makled, Sahar M. Ali, Mostafa M. Amin, Kamel R. Shoueir, Asmaa S. Sleem

{"title":"Silver nanoparticles as an effective tool for eradication and control of biofilm-forming Staphylococcus epidermidis isolates","authors":"Mohamed M. Gharieb, Amal F. Makled, Sahar M. Ali, Mostafa M. Amin, Kamel R. Shoueir, Asmaa S. Sleem","doi":"10.1007/s11696-024-03858-9","DOIUrl":"10.1007/s11696-024-03858-9","url":null,"abstract":"<div><p>This study examined biofilm-producing <i>Staphylococcus epidermidis</i> isolates from Menoufia University Hospitals, Egypt, and the antibiofilm effects of AgNPs, chlorhexidine, and iodine. About 162 staphylococcal isolates from clinical samples were phenotypically identified as <i>S. epidermidis</i> using Vitek 2, with 71 (43.82%) verified. Tissue culture plate detection and conventional PCR genotyping for <i>ica</i> genes revealed biofilm-producing phenotypes. <i>S. epidermidis</i> isolates developed biofilms (94.36%, 67/71) when subjected to various antiseptic concentrations and durations, including chlorhexidine digluconate (0.025%, 0.035%, and 0.05%), povidone-iodine (3.5%, 7.5%, and 10%), and AgNPs (100, 75, 50, and 25 μg/ml). All biofilms were suppressed by chlorhexidine at 0.05% concentration and varying exposure durations. All povidone-iodine concentrations worked at 10 min; however, 3.5% was ineffective at 5 min. Only 10% concentration prevented biofilm growth at 1 min. AgNPs' antibiofilm impact is concentration-dependent, with the most effective concentration at 100 μg/ml (79.42%), followed by 75 μg/ml (74.91%), 50 μg/ml (70.71%), and 25 μg/ml (62.83%). Chlorhexidine was efficacious in <i>vitro</i> at a therapeutically available concentration of 0.05% and a short exposure duration of 1 min, but povidone-iodine required greater concentrations and longer exposure times. The study found that AgNPs have varying antibiofilm effects, with the most robust inhibition at 100 μg/ml concentration.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1355 - 1366"},"PeriodicalIF":2.2,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667949","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}

引用次数: 0

Allura Red dye degradation using hybrid advanced oxidation methods 使用混合高级氧化法降解阿利拉红染料

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-22 DOI: 10.1007/s11696-025-03895-y

Gayatri D. Gawande, Yash D. Nahata, Prakash V. Chavan

{"title":"Allura Red dye degradation using hybrid advanced oxidation methods","authors":"Gayatri D. Gawande, Yash D. Nahata, Prakash V. Chavan","doi":"10.1007/s11696-025-03895-y","DOIUrl":"10.1007/s11696-025-03895-y","url":null,"abstract":"<div><p>The Allura Red dye is classified as an azo-type dye, known for its carcinogenic and mutagenic properties. It is commonly discharged into the environment through various industrial effluents, including those from the textile, food, drug, and cosmetic industries. This study is focused on investigating the degradation of Allura Red dye utilizing advanced oxidation techniques such as hydrogen peroxide, Fenton, hydrodynamic cavitation (HC), and hybrid methods (HC/H<sub>2</sub>O<sub>2</sub> and HC/Fenton) for the first time. Initially, the study examined individual process parameters including pH, H<sub>2</sub>O<sub>2</sub> concentration, Fe<sup>2+</sup>/H<sub>2</sub>O<sub>2</sub> ratio, and inlet pressure to determine their optimal values for maximum dye degradation. The highest degradation of the dye, reaching 68.9%, was achieved with an H<sub>2</sub>O<sub>2</sub> concentration of 11.47 × 10<sup>–3</sup> mol. L<sup>−1</sup> at pH = 3. Fenton reagent (Fe<sup>2</sup> + /H<sub>2</sub>O<sub>2</sub>) achieved a degradation rate of 85.90% at a molar ratio of 1:30. Inlet pressure was found to significantly affect the HC-based method, with maximum degradation observed at 5 bar and pH = 3, resulting in a degradation efficiency of 76.48% over 90 min. Subsequent experiments with HC/ H<sub>2</sub>O<sub>2</sub> and HC/Fenton conducted at 5 bar pressure and pH 3 revealed maximum degradation rates of 97.6% in 120 min and complete decolorization within 1 min for HC/Fenton. HC/Fenton also demonstrated the highest reduction in chemical oxygen demand (COD) at 76.43%. Kinetic analysis indicated that the degradation followed pseudo-first-order kinetics for all methods, with the HC/Fenton process exhibiting the fastest rate constant of 2.99 × 10<sup>–2</sup> min<sup>−1</sup>. Additionally, the electrical energy efficiency of HC-based methods was evaluated and compared. The study suggests that the HC/Fenton process shows promise for efficiently treating dye-contaminated water.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1879 - 1889"},"PeriodicalIF":2.2,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668122","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}

引用次数: 0

Navigating heterogeneous hydrogenation hazards: A systematic approach from primary screening to catalyst loading and optimization parameters

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-22 DOI: 10.1007/s11696-024-03879-4

Ujwal D. Patil, Arjun N. Vinchurkar, Jitendra S. Narkhede, Mahendra L. Bari, Tushar D. Deshpande

{"title":"Navigating heterogeneous hydrogenation hazards: A systematic approach from primary screening to catalyst loading and optimization parameters","authors":"Ujwal D. Patil, Arjun N. Vinchurkar, Jitendra S. Narkhede, Mahendra L. Bari, Tushar D. Deshpande","doi":"10.1007/s11696-024-03879-4","DOIUrl":"10.1007/s11696-024-03879-4","url":null,"abstract":"<div><p>This research delves into developing an efficient screening process for selecting an economical methodology, appropriate catalyst loading, and batch size for reactor occupancy in hydrogenation of 3-nitro-9-ethylcarbazole (NC-3). The main objective was to prepare the 3-Amino-9-ethylcarbazole (AC-3) using a Raney nickel heterogeneous catalyst from NC-3 and to minimize reaction time. The mass transfer coefficient (k<sub>L</sub>.a) was estimated, and the effects of agitation and occupancy (based on the change in hydrogen gas pressure) on k<sub>L</sub>.a were investigated. The primary focus was to effectively assess optimizing process parameters like hydrogenation pressure (range of 3–10 bar) and temperatures (up to 135 °C) in the presence of Raney nickel catalyst (of loading range from 3.5 to 12%). The reaction methodology is described based on hydrogen uptake concerning the theoretical requirements and process optimized for a Raney nickel loading of 5.4% at a temperature of 130 °C and 7 bar pressure in approximately 4–6 h. Findings revealed that the major hurdle is the limitation of the surface-aerated hydrogenation technique due to the constraint of the laboratory reactor.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1637 - 1647"},"PeriodicalIF":2.2,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668120","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}

引用次数: 0

Microwave-assisted extraction improves the recovery of cellulose and hemicellulose from Triplochiton scleroxylon (Ayous) sawdust

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-22 DOI: 10.1007/s11696-025-03897-w

Kom Regonne Raïssa, Douanla Keune Duro, Kodami Badza, Tsatsop Tsague Roli Karol, Ngimbus Laurent Joel, Chouaibou Baba Moctar, Ngassoum Martin Benoit

{"title":"Microwave-assisted extraction improves the recovery of cellulose and hemicellulose from Triplochiton scleroxylon (Ayous) sawdust","authors":"Kom Regonne Raïssa, Douanla Keune Duro, Kodami Badza, Tsatsop Tsague Roli Karol, Ngimbus Laurent Joel, Chouaibou Baba Moctar, Ngassoum Martin Benoit","doi":"10.1007/s11696-025-03897-w","DOIUrl":"10.1007/s11696-025-03897-w","url":null,"abstract":"<div><p><i>Triplochiton scleroxylon</i>, commonly known as <i>Ayous</i>, is a tropical non-edible biomass that generates many residues when exploited. These residues have added value when the different lignocellulosic components, cellulose, hemicellulose, and lignin, are separated. This work aims to determine the optimal conditions for microwave-assisted extraction (MAE) of cellulose and hemicellulose biopolymers from <i>Ayous</i> sawdust. The one-factor-at-a-time methodology was used to establish the ranges for the principal factors affecting microwave-assisted extraction, namely microwave power (W), irradiation time (min), and NaOH concentration (%). Subsequently, response surface methodology, specifically central composite design, was employed to determine the optimal extraction conditions for the biopolymer’s cellulose and hemicellulose. The biopolymers obtained under these optimal conditions were then characterized using infrared spectroscopy. The results indicated that, after factor screening, the experimental domains were microwave power 500–600 W, irradiation time 30–40 min, and NaOH concentration 20–30%. Optimal conditions were found to be 466 W of power, 39 min of irradiation, and 33% NaOH concentration, which resulted in extraction yields of 88% for cellulose. Optimum extraction conditions for hemicellulose (75%) are identical to those for cellulose but with a shorter irradiation time of 26 min. Infrared analysis of biopolymers obtained under initial conditions revealed functional groups characteristic of synthetic biopolymers. In conclusion, the study provides a robust methodology for optimizing MAE processes, offering valuable insights for the efficient recovery of high-quality biopolymers from lignocellulosic biomass.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1903 - 1914"},"PeriodicalIF":2.2,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668121","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}

引用次数: 0

Phytochemical characterization and bioactive potential of Daphne jejudoensis

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-21 DOI: 10.1007/s11696-025-03898-9

Chang-Dae Lee, Hyeonjun Yu, Neil Patrick Uy, Hwanhee Yu, Chang-Ha Lee, Hoon Kim, Sanghyun Lee

{"title":"Phytochemical characterization and bioactive potential of Daphne jejudoensis","authors":"Chang-Dae Lee, Hyeonjun Yu, Neil Patrick Uy, Hwanhee Yu, Chang-Ha Lee, Hoon Kim, Sanghyun Lee","doi":"10.1007/s11696-025-03898-9","DOIUrl":"10.1007/s11696-025-03898-9","url":null,"abstract":"<div><p>The bioactive potential of Jeju-Baek-Seohyang (JBS), scientifically known as <i>Daphne jejudoensis</i> M. Kim, was extensively investigated. The antioxidant activity of JBS was relatively lower compared to ascorbic acid in the DPPH and ABTS<sup>+</sup> assays. Despite this, JBS exhibited significant anti-inflammatory effects in lipopolysaccharide-stimulated RAW 264.7 cells showing an IC<sub>50</sub> value of 187.0 µg mL<sup>−1</sup>, which was relatively lower than that of the <i>Centella asiatica</i> sample (77.0 µg mL<sup>−1</sup>). Furthermore, the JBS sample evaluated in the cytotoxicity assay showed more than 100% RAW 264.7 cell viability even at 250 ppm, a higher concentration than the <i>C. asiatica</i> sample. To characterize the phytochemicals responsible for these bioactivities, LC-ESI/MS and HPLC analyses were employed wherein daphnetin 7-<i>O</i>-glucoside (57.5 mg g<sup>−1</sup>) and daphnetin (6.5 mg g<sup>−1</sup>) were identified as the primary flavonoids in the extracts. This study contributes to the evaluation of the potential of JBS, a recently reclassified species that remains understudied, as a valuable medicinal and industrial substance. Further studies are proposed to fully characterize the medicinal properties of this plant.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1915 - 1925"},"PeriodicalIF":2.2,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667968","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}

引用次数: 0

Performance of nanoparticle MgO/TiO2 nanofluids with Pure bore: insight into statistical and analytical approach

IF 2.2 4区化学

Chemical Papers Pub Date : 2025-01-21 DOI: 10.1007/s11696-024-03872-x

Zeeshan Ali Lashari, Shaine Mohammadali Lalji, Qamar Yasin, Abdulaziz Bentalib, Abdulrahman Bin Jumah

{"title":"Performance of nanoparticle MgO/TiO2 nanofluids with Pure bore: insight into statistical and analytical approach","authors":"Zeeshan Ali Lashari, Shaine Mohammadali Lalji, Qamar Yasin, Abdulaziz Bentalib, Abdulrahman Bin Jumah","doi":"10.1007/s11696-024-03872-x","DOIUrl":"10.1007/s11696-024-03872-x","url":null,"abstract":"<div><p>On a global basis, the utilization of metallic nanoparticles for improving residual oil recovery has grown dramatically, and nanofluids are widely used in hydrocarbons containing reservoirs to promote the recovery of hydrocarbons. An experimental study was conducted at nominal salinity (NaCl 2.0 wt%) to examine the significance with the addition of magnesium oxide (MgO) and titanium dioxide (TiO<sub>2</sub>) with Pure bore produced nanofluid to improve the recovery of oil that was further validated with statistical analysis. The experimental study used particle size analysis in conjunction with TDS, pH, EDX, FTIR, and XRD of MgO and TiO<sub>2</sub> to completely comprehend the nanofluid. To get insight into structure, the microstructure of MgO, TiO<sub>2</sub>, and nanofluid was examined. The effect of Pure bore concentration (0.10–0.50wt%) with MgO and TiO<sub>2</sub> concentrations (0.05–0.40wt%) in brine solution (NaCl 2.0wt%) with Pure bore. Analysis of the stability of the nanofluid was aided by the microscopic analysis and validated with statistical analysis using CCD. Additionally, the outcome of pH, viscosity, and salt was investigated. The optimum concentrations of the nanofluid MgO 0.10 wt%, TiO<sub>2</sub> 0.10 wt%, and Pure bore 0.40 wt% were attained at low–medium-salinity conditions (NaCl 2.0 wt%). Its suitability for use in minimal–moderate reservoirs was further validated through 2D contour map, interaction plot, and surface plot with CCD in MINITAB software. It can be noted that nanofluid prepared with Pure bore (0.40 wt%) with TiO<sub>2</sub> (0.10 wt%) marks better results and can be applied in low-salinity (NaCl 2.0 wt%) reservoirs to improve oil recovery.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 3","pages":"1523 - 1538"},"PeriodicalIF":2.2,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143667905","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}

引用次数: 0