Journal of the Iranian Chemical Society最新文献

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Schiff base aminoquinoline derivative for spectrophotometric determination of micro amounts of the mercury (II) Ion: thermodynamic evaluation and analytical applications 希夫碱氨基喹啉衍生物分光光度法测定微量汞离子:热力学评价和分析应用
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-29 DOI: 10.1007/s13738-025-03255-3
Ihsan Mahdi Shaheed, Raghad Saad Hatem
{"title":"Schiff base aminoquinoline derivative for spectrophotometric determination of micro amounts of the mercury (II) Ion: thermodynamic evaluation and analytical applications","authors":"Ihsan Mahdi Shaheed,&nbsp;Raghad Saad Hatem","doi":"10.1007/s13738-025-03255-3","DOIUrl":"10.1007/s13738-025-03255-3","url":null,"abstract":"<div><p>This study involves the use of a reagent prepared via the Schiff base reaction method between 8-aminoquinoline and 4,4'-dimethoxybenzil to produce 1,2-bis(4-methoxyphenyl)-2(quinolone-8-ylimino)ethan-1-one (BMPQYE1). The reagent was characterized by various spectrophotometric techniques such as FTIR, UV–visible spectrophotometry, 1H NMR, 13C NMR, and mass spectrometry. All analyses approved the formation of a new ligand. The impact of pH, time, temperature, volume of reagent, sequence addition, and interferences have been investigated to determine the optimal conditions for the reaction. The calibration curve was found to obey Beer's law in the range of 1 − 12 µg mL<sup>−1</sup> with a linearity coefficient of <i>R</i><sup>2</sup> = 0.9998 at <i>λ</i><sub>max</sub> = 554 nm. The molar absorptivity (<i>ε</i>) was 9.403 × 103 L mol<sup>−1</sup> cm<sup>−1</sup>, the M:L ratio was found to be 1:2, and the thermodynamic functions such as enthalpy, entropy, and Gibbs free energy indicated that the reaction was endothermic with a stability constant of 3.749 × 10<sup>8</sup>.The analytical method was accurate and precise, as demonstrated by relative standard deviations (RSD%) ranging from 0.598 to 1.567% and recovery percentages from 98.490 to 101.190% for five different concentrations, while the limit of detection and limit of quantification were found to be 0.449 µg mL<sup>−1</sup> and 1.481 µg mL<sup>−1</sup>, respectively. The proposed method demonstrated high accuracy and sensitivity in the determination of trace amounts of mercury (II) ions in tap and river water.</p></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 8","pages":"1711 - 1722"},"PeriodicalIF":2.3,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062231","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
Removal of heavy metal cations (Cd2+, Hg2+, and Pb2+) from water using carboxylic acid-functionalized covalent triazine frameworks: Computational design and experimental validation 羧酸功能化共价三嗪框架去除水中重金属阳离子(Cd2+, Hg2+和Pb2+):计算设计和实验验证
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-28 DOI: 10.1007/s13738-025-03253-5
Rana Rafiei, Majid Pirooz, Sina Pourebrahimi
{"title":"Removal of heavy metal cations (Cd2+, Hg2+, and Pb2+) from water using carboxylic acid-functionalized covalent triazine frameworks: Computational design and experimental validation","authors":"Rana Rafiei,&nbsp;Majid Pirooz,&nbsp;Sina Pourebrahimi","doi":"10.1007/s13738-025-03253-5","DOIUrl":"10.1007/s13738-025-03253-5","url":null,"abstract":"<div><p>The search for efficient adsorbents to capture harmful heavy metal (HM) cations is crucial for environmental remediation. This study explores the adsorption performance of pristine and functionalized CTFs for removing Cd<sup>2+</sup>, Hg<sup>2+</sup>, and Pb<sup>2+</sup> from water using both computational and experimental methods. A molecular-level understanding of host–guest interactions is essential for designing functionalized nanoporous materials. DFT calculations at the ωB97XD level predict complexation energies of the cations on CTF fragments in the order: <span>({text{E}}_{{text{Pb}}^{2+}@text{CTF}})</span> &gt; <span>({text{E}}_{{text{Hg}}^{2+}@text{CTF}})</span>  &gt; <span>({text{E}}_{{text{Cd}}^{2+}@text{CTF}})</span>. Based on the theoretical results, carboxylic acid (COOH)-functionalized CTF (COOH-CTF) is selected as the optimal adsorbent. COOH-CTF is synthesized through ZnCl<sub>2</sub>-catalyzed ionothermal cyclotrimerization of the 2,5-dicyanobenzoic acid monomer and characterized by XRD, FT-IR, BET, and XPS techniques. The COOH-CTF adsorbent demonstrates medium to high adsorption capacities for Cd<sup>2+</sup> (88.02 mg g<sup>−1</sup>), Hg<sup>2+</sup> (247.28 mg g<sup>−1</sup>), and Pb<sup>2+</sup> (360.39 mg g<sup>−1</sup>). NCI analysis shows that in the HM@CTF-1 system, HM cations interact mainly via Van der Waals and strong electrostatic forces with nitrogen atoms of the triazine ring. In HM@COOH-CTF, additional strong electrostatic interactions occur with oxygen atoms of carboxylic groups, indicating a synergistic adsorption effect at N and O sites.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 8","pages":"1683 - 1695"},"PeriodicalIF":2.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062152","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, enzyme inhibition and docking studies of isatin derivatives from aliphatic esters 脂肪酯类isatin衍生物的合成、酶抑制及对接研究
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-27 DOI: 10.1007/s13738-025-03250-8
Rifhat Sultana, Obaid-ur-Rahman Abid, Saira Bibi, Mohsin Ali, Syed Maeen Badshah, Shoaib Khan, Zaheed Ahmed
{"title":"Synthesis, enzyme inhibition and docking studies of isatin derivatives from aliphatic esters","authors":"Rifhat Sultana,&nbsp;Obaid-ur-Rahman Abid,&nbsp;Saira Bibi,&nbsp;Mohsin Ali,&nbsp;Syed Maeen Badshah,&nbsp;Shoaib Khan,&nbsp;Zaheed Ahmed","doi":"10.1007/s13738-025-03250-8","DOIUrl":"10.1007/s13738-025-03250-8","url":null,"abstract":"<div><p>A series of imine derivatives of isatin 4(a–e), 5(a–e), 6(a–b) were synthesized using aliphatic hydrazides and substituted isatins. Synthesized products were analyzed by spectroanalytical techniques and evaluated for urease and <i>α</i>-glucosidase inhibition activities. Compounds 3a, 3b, 4b, 5a, 5b, 5c and 6a with an IC<sub>50</sub> values 50.40 ± 0.21, 46.19 ± 0.21, 46.03 ± 1.22, 43.33 ± 0.62, 50.67 ± 0.13, 45.78 ± 3.53, 50.34 ± 1.92 [µM] respectively exhibited excellent urease inhibition results compared to the standard [24.14 µM]. However with respect to α-glucosidase inhibition activity, the compounds 3b, 4a, 5a, 5b, and 5c with IC<sub>50</sub> values 133.08 ± 0.24, 162.15 ± 0.32, 128.56 ± 2.42, 136.70 ± 3.22 and 145.33 ± 0.32 [µM] respectively showed good inhibition. Results were also supported by docking studies.</p></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 8","pages":"1629 - 1636"},"PeriodicalIF":2.3,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062150","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 of novel molecularly imprinted polymer on Fe3O4/SiO2 as a magnetic separator for selective fluorescent determination of casein from biosources 新型Fe3O4/SiO2分子印迹聚合物的合成及其在生物源酪蛋白选择性荧光检测中的应用
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-24 DOI: 10.1007/s13738-025-03209-9
Mohammad Saeed Tohidi, Mehrosadat Mirmohammadi, Majid Kolahdoozan
{"title":"Synthesis of novel molecularly imprinted polymer on Fe3O4/SiO2 as a magnetic separator for selective fluorescent determination of casein from biosources","authors":"Mohammad Saeed Tohidi,&nbsp;Mehrosadat Mirmohammadi,&nbsp;Majid Kolahdoozan","doi":"10.1007/s13738-025-03209-9","DOIUrl":"10.1007/s13738-025-03209-9","url":null,"abstract":"<div><p>A molecularly imprinted polymer was synthesized—in which NTAA (nanoparticle Fe<sub>3</sub>O<sub>4</sub>/SiO<sub>2</sub>-tetraethyl silicate;3-triethoxysilylpropan-1-amine-acryloyl chloride) was used to serve as a connecting bridge to link the magnetic nanoparticles (MNPs) to monomer; a cross-linker agent was also applied to link polymer chains. Therefore, NTAA can result in molecularly imprinted polymer (MIP) at the presence of azobisisobutyronitrile (initiation), ethylene glycol dimethacrylate (as cross-linker agent), acryloyl chloride (second monomer), casein (analyte), and ethanol–water (50:50) as solvent. Because of fluorescence properties of alpha-casein, fluorescence spectroscopy can be exploited to detect the adsorption amounts of casein, and the detection limit of casein adoption was 0.5 μmol.L<sup>–1</sup> which refers to the minimum concentration of casein that can be reliably detected in a given sample. Effects of various effective factors in casein adsorption were studied and optimized among which concentration of crosslinking agent, analyte volume used in MIP synthesis, analyte concentration in separation step, extraction time, pH, and temperature can be mentioned. Optimized fluorescence emission was achieved at 339.5 nm using a standard solution of casein in aqueous sodium hydroxide solution as a solvent. The intermediates formed during the MIP synthesis reactions were also identified by FT-IR and TLC. Magnetic properties of the nanoparticles were assessed by VSM; while the surface and size of nanoparticles and MIP were evaluated by XRD. Moreover, the surface morphology of MIP and NIP was examined by SEM images. Nanoparticles and MIP offered proper fluorescence efficiency through an excellent yield (%93) of casein separation from bovine’s milk.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 8","pages":"1583 - 1594"},"PeriodicalIF":2.3,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062254","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
Carica papaya-mediated green synthesis of ZnO nanoparticles: biological potentials and in silico investigations 木瓜介导的ZnO纳米颗粒绿色合成:生物电位和硅研究
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-24 DOI: 10.1007/s13738-025-03257-1
Imran Haider, Shamsa Munir, Sidra Abbas, Maimoona Sabir, Sobia Nisa, Saira Fatima, Maria Gul
{"title":"Carica papaya-mediated green synthesis of ZnO nanoparticles: biological potentials and in silico investigations","authors":"Imran Haider,&nbsp;Shamsa Munir,&nbsp;Sidra Abbas,&nbsp;Maimoona Sabir,&nbsp;Sobia Nisa,&nbsp;Saira Fatima,&nbsp;Maria Gul","doi":"10.1007/s13738-025-03257-1","DOIUrl":"10.1007/s13738-025-03257-1","url":null,"abstract":"<div><p>Zinc oxide nanoparticles (ZnO NPs) have emerged as promising biocompatible materials for biomedical and environmental applications due to their unique physicochemical properties. In this study, ZnO NPs were synthesized via a green approach using Carica papaya leaf extract and comprehensively characterized using UV–visible spectroscopy (UV–Vis) and Fourier-transform infrared spectroscopy. Morphological and structural properties were analyzed via X-ray diffraction and scanning electron microscopy. The environmentally benign ZnO NPs were evaluated for their biological potential, demonstrating significant antibacterial activity against <i>Helicobacter pylori</i>, with a minimum inhibitory concentration of 40.62 μg/mL and a minimum bactericidal concentration of 162.5 μg/mL. The nanoparticles also exhibited potent antioxidant and cytotoxic properties, evidenced by a notably low IC50 value of 63.055 µg/mL. To elucidate the interaction mechanism between ZnO and DNA bases, a semiempirical computational study was performed. Interaction energy calculations revealed the strongest affinity for adenine and the weakest for guanine. Theoretical investigations, including electronic absorption spectra, vibrational spectra, electrostatic potential, and charge density analyses, indicated that ZnO interaction induced a pronounced redshift in the electronic spectra (extending to 954 nm), shifting absorption from the UV to the near-infrared region. Furthermore, charge distribution and electrostatic potential plots suggested distinct binding modes: cytosine and guanine interacted primarily through hydrogen bonding, while adenine coordinated via the electron-rich nitrogen (–N =) in its five-membered ring, facilitating electron donation to ZnO.</p></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 8","pages":"1733 - 1747"},"PeriodicalIF":2.3,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062253","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
Electrochemical impedance spectroscopy detection of sodium ascorbate based on poly(T)-poly(AT-TA) dsDNA templated copper nanoclusters 基于聚(T)-聚(AT-TA) dsDNA模板铜纳米团簇的抗坏血酸钠电化学阻抗谱检测
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-23 DOI: 10.1007/s13738-025-03256-2
Shijie Zhou, Junjie Fu, Peng Yu
{"title":"Electrochemical impedance spectroscopy detection of sodium ascorbate based on poly(T)-poly(AT-TA) dsDNA templated copper nanoclusters","authors":"Shijie Zhou,&nbsp;Junjie Fu,&nbsp;Peng Yu","doi":"10.1007/s13738-025-03256-2","DOIUrl":"10.1007/s13738-025-03256-2","url":null,"abstract":"<div><p>Sodium ascorbate (SA) is used as a source of vitamins for the human body, but the excessive intake can lead to symptoms such as diarrhea, stomach cramps or urinary calculi. In this work, the two DNA strands containing T-rich and AT-rich sequences were hybridized to form a double-stranded DNA (dsDNA), which was used as the template to in-situ synthesize copper nanoclusters (CuNCs). In the presence of SA, Cu<sup>2+</sup> were reduced to Cu<sup>0</sup> by disproportionation, and CuNCs were formed on the DNA template, resulting in the strong electrochemical impedance signal. Several important parameters such as the concentration of Cu<sup>2+</sup> and the reaction time were optimized. Under the optimized conditions, the linear range was 5–300 μM, and the limit of detection was 0.98 μM for SA assay. In addition, a satisfactory recovery rate was obtained by using this method to detect SA in the beverage . Therefore, the developed detection method could detect SA sensitively and has a broad application prospect in food and biological analysis.</p></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 8","pages":"1723 - 1731"},"PeriodicalIF":2.3,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062232","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, spectroscopic characterizations, comparison of experimental, theoretical results, and molecular docking of novel hydrazone Schiff base compound N'-(4-hydroxy-3,5-dimethoxybenzylidene)-1-(2-methoxyphenyl)-5-methyl-1H-pyrazole-4-carbohydrazide 新型腙希夫碱化合物N'-(4-羟基-3,5-二甲氧基苄基)-1-(2-甲氧基苯基)-5-甲基- 1h -吡唑-4-碳肼的合成、光谱表征、实验、理论结果比较及分子对接
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-22 DOI: 10.1007/s13738-025-03251-7
Şehriman Atalay
{"title":"Synthesis, spectroscopic characterizations, comparison of experimental, theoretical results, and molecular docking of novel hydrazone Schiff base compound N'-(4-hydroxy-3,5-dimethoxybenzylidene)-1-(2-methoxyphenyl)-5-methyl-1H-pyrazole-4-carbohydrazide","authors":"Şehriman Atalay","doi":"10.1007/s13738-025-03251-7","DOIUrl":"10.1007/s13738-025-03251-7","url":null,"abstract":"<div><p>A hydrazone Schiff base compound, N'-(4-hydroxy-3,5-dimethoxybenzylidene)-1-(2-methoxyphenyl)-5-methyl-1H-pyrazole-4-carbohydrazide (SGHZN), was synthesized, and its crystal structure was elucidated using X-ray diffraction, while IR, NMR, and LC/MS-QTOF methods provided additional characterization of SGHZN. The geometry of the compound, as determined from the X-ray experiment, has been analyzed using Hartree–Fock and density functional theory methods with the 6–311 +  + G(d,p) basis set. The results demonstrate that the calculated data accurately reproduce the structural features of the compound. The analysis of the structure also included MEP, FMO, energy frame work, and Hirshfeld surface evaluations. Furthermore, this research examined both thermal characteristics and the nonlinear optical properties. The ADMET properties of the compound were evaluated using ADMETlab 3.0 to assess its drug-like characteristics. AutoDock 1.5.7 [20] was used for docking simulations.</p></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 8","pages":"1637 - 1657"},"PeriodicalIF":2.3,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062151","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
Iodine capture using spirobifluorene-based covalent organic frameworks 基于螺双芴的共价有机框架的碘捕获
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-21 DOI: 10.1007/s13738-025-03247-3
Maosong Hu, Zhineng Wu, Hongxia Jiang, Jianqiang Luo, Jia Meng, Jianguo Ma, Shujuan Liu
{"title":"Iodine capture using spirobifluorene-based covalent organic frameworks","authors":"Maosong Hu,&nbsp;Zhineng Wu,&nbsp;Hongxia Jiang,&nbsp;Jianqiang Luo,&nbsp;Jia Meng,&nbsp;Jianguo Ma,&nbsp;Shujuan Liu","doi":"10.1007/s13738-025-03247-3","DOIUrl":"10.1007/s13738-025-03247-3","url":null,"abstract":"<div><p>Two covalent organic framework materials based on rigid spirobifluorene units, DbSp-COF and BbSp-COF, were designed and synthesized for efficient capture of gaseous and solution phase iodine. Both DbSp-COF and BbSp-COF exhibit excellent thermal stability, retaining 77% and 90% residual mass at 800 °C, respectively. The materials show strong hydrophobicity with contact angles greater than 100°. Under 80% humidity, both DbSp-COF and BbSp-COF maintain over 85% of their adsorption performance. Under simulated nuclear fuel reprocessing conditions (75 °C, atmospheric pressure), the saturated adsorption capacities of DbSp-COF and BbSp-COF for gaseous iodine are 4.73 g·g<sup>−1</sup> and 4.48 g·g<sup>−1</sup>, respectively. In a 500 mg·L<sup>−1</sup> iodine solution in cyclohexane, their maximum adsorption capacities are 569.3 mg·g<sup>−1</sup> and 585.7 mg·g<sup>−1</sup>, respectively. Characterization results indicate that the adsorption mechanism involves charge transfer between iodine molecules and π-conjugated frameworks, forming I₃<sup>−</sup>/I₅<sup>−</sup> polyiodides. After four cycles, the adsorption capacity decreases by less than 15%, highlighting their potential application in radioactive iodine treatment.</p></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 7","pages":"1567 - 1579"},"PeriodicalIF":2.3,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168158","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
Fatty acid methyl esters production via transesterification of triglycerides from non-edible oil using newly synthesized heterogeneous CoO/Nd2O3 nanocomposite 新合成的CoO/Nd2O3纳米复合材料通过非食用油甘油三酯酯交换制备脂肪酸甲酯
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-19 DOI: 10.1007/s13738-025-03249-1
Syed Hamza Tayyab, Hina Kanwal, Muhammad Tariq, Muhammad Sirajuddin, Muhammad Imran, Jafir Hussain Sherazi
{"title":"Fatty acid methyl esters production via transesterification of triglycerides from non-edible oil using newly synthesized heterogeneous CoO/Nd2O3 nanocomposite","authors":"Syed Hamza Tayyab,&nbsp;Hina Kanwal,&nbsp;Muhammad Tariq,&nbsp;Muhammad Sirajuddin,&nbsp;Muhammad Imran,&nbsp;Jafir Hussain Sherazi","doi":"10.1007/s13738-025-03249-1","DOIUrl":"10.1007/s13738-025-03249-1","url":null,"abstract":"<div><p>Nowadays energy crisis is a big challenge due to fast depletion, increased consumption and swift increase in human population. Moreover, hydrocarbon-based fuels are responsible of increasing environmental pollution. Biofuel particularly biodiesel has got attention as alternative and clean fuel. Raw source of biodiesel and catalyst designing are important deciding factor for commercialization. In the present study, cobalt oxide/neodymium oxide (CoO/Nd<sub>2</sub>O<sub>3</sub>) nanocomoposite was synthesized by using the controlled hydrothermal approach followed by calcination. Analytical techniques, such as FTIR, XRD, SEM, and EDX, were utilized to investigate the functional, structural, morphological properties and elemental features of the produced nanocomposite, respectively. The peaks appeared at 661.94, 630.39, and 420.06 cm<sup>−1</sup> represent the Co–O, Nd–O and Nd–OH, respectively. The presence of diffraction peaks of both CoO and Nd<sub>2</sub>O<sub>3</sub> in XRD pattern represent the formation of nanocomposite. Irregular or rod-like morphology was observed in SEM images. As an energy crop and non-edible nature, <i>Pongamia pinnata’s</i> oil was used for production of FAMEs (fatty acids methyl esters) commonly known as biodiesel. The CoO/Nd<sub>2</sub>O<sub>3</sub> nanocomposite was used as a heterogeneous catalyst in transesterification reaction to produce FAMEs. The spectroscopic analysis such as FTIR and NMR (<sup>1</sup>H and <sup>13</sup>C) were used to comprehensively characterize the biodiesel. The emergence of new peak at 1190 cm<sup>−1</sup> indicated methoxy methyl (–OCH<sub>3</sub>) group representing the formation of FAMEs. Proton nuclear magnetic resonance (<sup>1</sup>H-NMR) spectrum shows that 91% of the triglycerides were converted to their FAMEs. The biodiesel composition was identified by GC–MS analysis in which nine different types of FAMEs (saturated such as methyl esters of palmitic, arachidic, behenic and lignoceric acids and unsaturated such as methyl esters of palmitoleic, linoleic, gondoic, erucic, nervonic acid) were found. The highest biodiesel production yield was obtained at optimized oil-methanol molar ratio of 1:18, and catalyst concentration of 1.5 wt%. The physical fuel parameters such as acid number, kinematic viscosity and density were determined as 0.28 mg of KOH/g, 6.98 cSt and 0.85 g/cm<sup>3</sup>, respectively, which fall within ASTM limits.</p></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"22 8","pages":"1617 - 1627"},"PeriodicalIF":2.3,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062230","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
Diversity-oriented synthesis of novel benzo[h]quinoline and pyrimidine-tethered tri-substituted methane using L-proline as an effective bio-organo-catalyst 以l -脯氨酸为有效生物有机催化剂合成新型苯并喹啉和嘧啶系三取代甲烷
IF 2.3 4区 化学
Journal of the Iranian Chemical Society Pub Date : 2025-07-18 DOI: 10.1007/s13738-025-03237-5
Sajedeh Alizadeh, Abbas Ali Esmaeili
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