Mercury contamination poses significant threats to human health, aquatic ecosystems and various living organisms. Effective detection methods are essential for monitoring such contamination. In this investigation, coumarin-derivatized silatrane (CS) was synthesized and meticulously characterized using 1H NMR, 13C NMR and mass spectrometry. The CS compound exhibited outstanding performance in detecting Hg(II), showing excellent selectivity and sensitivity even in the presence of other metal ions with very low limit of detection value (LOD). Furthermore, the CS system exhibited promising performance in analyzing real water samples, yielding a recovery rate exceeding 95 %. Beyond its detection prowess, CS displayed notable biological properties, including significant radical scavenging activity. Molecular docking studies revealed its potential as an inhibitor of acetylcholinesterase (AChE) protein, suggesting a prospective role in combating Alzheimer disease’s disease.
{"title":"Coumarin modified Silatrane: A potent probe for Hg(II) ion Detection, biological evaluation and Acetylcholinesterase inhibition","authors":"Gurjaspreet Singh , Pooja Malik , Heena , Jigmat Stanzin , Swati Devi , Devina Sharma , K.N. Singh , Jandeep Singh , Gurleen Singh , Manickam Selvaraj","doi":"10.1016/j.inoche.2024.113494","DOIUrl":"10.1016/j.inoche.2024.113494","url":null,"abstract":"<div><div>Mercury contamination poses significant threats to human health, aquatic ecosystems and various living organisms. Effective detection methods are essential for monitoring such contamination. In this investigation, coumarin-derivatized silatrane (<strong>CS</strong>) was synthesized and meticulously characterized using <sup>1</sup>H NMR, <sup>13</sup>C NMR and mass spectrometry. The CS compound exhibited outstanding performance in detecting Hg(II), showing excellent selectivity and sensitivity even in the presence of other metal ions with very low limit of detection value (LOD). Furthermore, the <strong>CS</strong> system exhibited promising performance in analyzing real water samples, yielding a recovery rate exceeding 95 %. Beyond its detection prowess, <strong>CS</strong> displayed notable biological properties, including significant radical scavenging activity. Molecular docking studies revealed its potential as an inhibitor of acetylcholinesterase (AChE) protein, suggesting a prospective role in combating Alzheimer disease’s disease.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113494"},"PeriodicalIF":4.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1016/j.inoche.2024.113567
Fatima A. Hussein , Nehia N. Hussien , Majid S. Jabir , Suresh Ghotekar , Ayman A. Swelum
Silver nanoparticles (AgNPs) were produced using diverse techniques, but each had negative implications. Physical procedures are expensive and inefficient, whereas chemical methods are highly poisonous and unstable. Researchers have discovered a novel way to create AgNPs using fungi, bacteria, actinomycetes, and plants. The process is known as biosynthesis, green synthesis, or eco-friendly synthesis. The current study aims to biosynthesize AgNPs mediated Lactobacillus acidophilus then, a study of their pharmaceutical applications using different assays. This study is conducted between (September 2023-Julay 2024). Green AgNPs were characterized after been synthesised using different techniques, such as SEM-EDX, FTIR, XRD, TEM, Zeta potential, DLS and UV/Vis spectrophotometry. Antibacterial activity of AgNPs was evaluated against gram-negative bacterial strains Klebsiella pneumoniae and Escherichia coli in addition to the strains of gram-positive Bacillus cereus and Staphylococcus aureus; their antibiofilm effects, growth curve, and minimal inhibitory concentration of AgNPs were estimated. The ability of AgNPs in reduction of NLRP3 inflammasome activity was estimated In-vitro, and In-vivo models. The findings indicated that combining AgNPs and different antibiotics increased their antibacterial efficiency. Furthermore, the results showed the ability of AgNPs in reduce of NLRP3 inflammasome activation in-vitro, and In-vivo models via prevent neutrophil recruitment in an acute peritonitis animal model by blocking IL-1β, and IL-18 activity. Taken together, the results of the current study showed that the AgNPs could be a promising approach treatment in the future for other pathogenic bacterial strains, a potential agent for blocking bacterial biofilm formation and also AgNPs could be anti-inflammatory nanomaterials for the therapeutic of illnesses mediated by macrophages.
{"title":"Biogenic synthesized silver nanoparticles for control of multidrug resistant bacteria, and inhibition of NLRP3 inflammasome activation: In-vitro- and in-vivo study","authors":"Fatima A. Hussein , Nehia N. Hussien , Majid S. Jabir , Suresh Ghotekar , Ayman A. Swelum","doi":"10.1016/j.inoche.2024.113567","DOIUrl":"10.1016/j.inoche.2024.113567","url":null,"abstract":"<div><div>Silver nanoparticles (AgNPs) were produced using diverse techniques, but each had negative implications. Physical procedures are expensive and inefficient, whereas chemical methods are highly poisonous and unstable. Researchers have discovered a novel way to create AgNPs using fungi, bacteria, actinomycetes, and plants. The process is known as biosynthesis, green synthesis, or eco-friendly synthesis. The current study aims to biosynthesize AgNPs mediated <em>Lactobacillus acidophilus</em> then, a study of their pharmaceutical applications using different assays. This study is conducted between (September 2023-Julay 2024). Green AgNPs were characterized after been synthesised using different techniques, such as SEM-EDX, FTIR, XRD, TEM, Zeta potential, DLS and UV/Vis spectrophotometry. Antibacterial activity of AgNPs was evaluated against gram-negative bacterial strains <em>Klebsiella pneumoniae</em> and <em>Escherichia coli</em> in addition to the strains of gram-positive <em>Bacillus cereus</em> and <em>Staphylococcus aureus</em>; their antibiofilm effects, growth curve, and minimal inhibitory concentration of AgNPs were estimated. The ability of AgNPs in reduction of NLRP3 inflammasome activity was estimated <em>In-vitro</em>, and <em>In-vivo</em> models. The findings indicated that combining AgNPs and different antibiotics increased their antibacterial efficiency. Furthermore, the results showed the ability of AgNPs in reduce of NLRP3 inflammasome activation in<em>-vitro</em>, and <em>In-vivo</em> models via prevent neutrophil recruitment in an acute peritonitis animal model by blocking IL-1β, and IL-18 activity. Taken together, the results of the current study showed that the AgNPs could be a promising approach treatment in the future for other pathogenic bacterial strains, a potential agent for blocking bacterial biofilm formation and also AgNPs could be anti-inflammatory nanomaterials for the therapeutic of illnesses mediated by macrophages.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113567"},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1016/j.inoche.2024.113559
Xiaobo Wang , Xiaoxue Zhang , Ning Guo , Lingling Tang
To enhance the low-temperature denitration efficiency of α-Fe2O3, Ce/Cu-supported Ce/α-Fe and Cu/α-Fe were synthesized and applied to NH3-SCR denitration. The findings indicate that Ce and Cu significantly improve the low-temperature denitration performance of α-Fe2O3, with the Cu/α-Fe achieving over 95 % catalytic efficiency between 240 and 360 °C. Characterization results show strong interactions and electronic transfer effects between Ce/Cu and Fe, which significantly reduce the crystallinity of α-Fe2O3 and generate more surface Fe3+ and chemisorbed oxygen. For Cu/α-Fe, its low-temperature denitration performance is largely dependent on its redox capacity and surface acidity. In contrast, the improved low-temperature denitration performance of Ce/α-Fe is mainly attributed to its significantly enhanced surface acidity. Moreover, after loading Ce and Cu, the types of surface adsorbed NOx species are increased. Particularly for Cu/α-Fe, monodentate nitrate is newly generated, which are key active species for low-temperature catalytic activity, explaining why Cu/α-Fe exhibits the best low-temperature catalytic performance.
为了提高α-Fe2O3的低温脱硝效率，合成了Ce/Cu支撑的Ce/α-Fe和Cu/α-Fe，并将其应用于NH3-SCR脱硝。研究结果表明，Ce 和 Cu 能显著改善 α-Fe2O3 的低温脱硝性能，Cu/α-Fe 在 240 至 360 °C 之间的催化效率超过 95%。表征结果表明，Ce/Cu 和 Fe 之间存在很强的相互作用和电子转移效应，这大大降低了 α-Fe2O3 的结晶度，并产生了更多的表面 Fe3+ 和化学吸附氧。对于 Cu/α-Fe 来说，其低温脱硝性能主要取决于其氧化还原能力和表面酸度。相比之下，Ce/α-Fe 的低温脱硝性能之所以得到改善，主要是因为其表面酸度显著增强。此外，添加 Ce 和 Cu 后，表面吸附的氮氧化物种类也有所增加。特别是对于 Cu/α-Fe 来说，新生成的单齿硝酸盐是低温催化活性的关键活性物种，这也解释了为什么 Cu/α-Fe 具有最佳的低温催化性能。
{"title":"Boosted denitration activity of α-Fe2O3 for low-temperature NH3-SCR by addition of Ce/Cu","authors":"Xiaobo Wang , Xiaoxue Zhang , Ning Guo , Lingling Tang","doi":"10.1016/j.inoche.2024.113559","DOIUrl":"10.1016/j.inoche.2024.113559","url":null,"abstract":"<div><div>To enhance the low-temperature denitration efficiency of α-Fe<sub>2</sub>O<sub>3</sub>, Ce/Cu-supported Ce/α-Fe and Cu/α-Fe were synthesized and applied to NH<sub>3</sub>-SCR denitration. The findings indicate that Ce and Cu significantly improve the low-temperature denitration performance of α-Fe<sub>2</sub>O<sub>3</sub>, with the Cu/α-Fe achieving over 95 % catalytic efficiency between 240 and 360 °C. Characterization results show strong interactions and electronic transfer effects between Ce/Cu and Fe, which significantly reduce the crystallinity of α-Fe<sub>2</sub>O<sub>3</sub> and generate more surface Fe<sup>3+</sup> and chemisorbed oxygen. For Cu/α-Fe, its low-temperature denitration performance is largely dependent on its redox capacity and surface acidity. In contrast, the improved low-temperature denitration performance of Ce/α-Fe is mainly attributed to its significantly enhanced surface acidity. Moreover, after loading Ce and Cu, the types of surface adsorbed NO<em><sub>x</sub></em> species are increased. Particularly for Cu/α-Fe, monodentate nitrate is newly generated, which are key active species for low-temperature catalytic activity, explaining why Cu/α-Fe exhibits the best low-temperature catalytic performance.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113559"},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1016/j.inoche.2024.113538
Mahmood A. Albo Hay Allah , Hanadi K. Ibrahim , Hassan A. Alshamsi
This current study presents a green synthesis approach of ZnO, biochar and ZnO/biochar nanostructures using leaves of Pontederia crassipes L. The green fabricated nanomaterials were investigated using different characterization techniques, including as XRD, UV–Vis, TEM, FE-SEM, EDX, BET/BJH, and FTIR. The fabricated nanomaterials were well crystallized with an average crystallite size of 40 nm (ZnO), 43 nm (biochar), and 48 nm (ZnO/biochar). A coomassie brilliant blue G250 (CBB) and methylene blue (MB) removal study was conducted to optimizing (optimize) the influence of operating factors on the adsorption efficiency. Employing a ZnO/biochar 98 % and 99 % adsorption efficiencies were reached in an optimum condition for CCB and MB, respectively. Adopting ZnO/biochar heterostructure as an anticancer for MCF-7 human breast cancer cells was also evaluated. The MTT assay revealed that ZnO/biochar samples exhibit a promise in vitro cytotoxic efficacy against the MCF-7 cell line with IC50 being 79.82 μg /mL. In addition, antimicrobial activity of ZnO/biochar nanoparticles was evaluated on Gram-negative and Gram-positive bacteria. Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) were used as test microorganisms. The results revealed that the ZnO/biochar possesses an antibacterial inhibition zone of 11 and 9 mm on E. coli, and S. aureus, respectively.
{"title":"Enhanced adsorption, anticancer and antibacterial potentials of Pontederia crassipes L. extract mediated ecofriendly synthesized ZnO/biochar nanohybrid","authors":"Mahmood A. Albo Hay Allah , Hanadi K. Ibrahim , Hassan A. Alshamsi","doi":"10.1016/j.inoche.2024.113538","DOIUrl":"10.1016/j.inoche.2024.113538","url":null,"abstract":"<div><div>This current study presents a green synthesis approach of ZnO, biochar and ZnO/biochar nanostructures using leaves of <em>Pontederia crassipes</em> L. The green fabricated nanomaterials were investigated using different characterization techniques, including as XRD, UV–Vis, TEM, FE-SEM, EDX, BET/BJH, and FTIR. The fabricated nanomaterials were well crystallized with an average crystallite size of 40 nm (ZnO), 43 nm (biochar), and 48 nm (ZnO/biochar). A coomassie brilliant blue G250 (CBB) and methylene blue (MB) removal study was conducted to optimizing (optimize) the influence of operating factors on the adsorption efficiency. Employing a ZnO/biochar 98 % and 99 % adsorption efficiencies were reached in an optimum condition for CCB and MB, respectively. Adopting ZnO/biochar heterostructure as an anticancer for MCF-7 human breast cancer cells was also evaluated. The MTT assay revealed that ZnO/biochar samples exhibit a promise in vitro cytotoxic efficacy against the MCF-7 cell line with IC<sub>50</sub> being 79.82 μg /mL. In addition, antimicrobial activity of ZnO/biochar nanoparticles was evaluated on Gram-negative and Gram-positive bacteria. <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus aureus</em> (<em>S. aureus</em>) were used as test microorganisms. The results revealed that the ZnO/biochar possesses an antibacterial inhibition zone of 11 and 9 mm on <em>E. coli</em>, and <em>S. aureus</em>, respectively.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113538"},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1016/j.inoche.2024.113539
Sainta Jostar T. , G. Johnsy Arputhavalli , Nithyadharseni Palaniyandy , S. Jebasingh , Mohammad Y. Alshahrani , G.S. Divya , P. Muthu Vijayalakshmi
This article describes the facile preparation of cubic structured pure and Mg-doped Mn2O3 nanoparticles by green synthesis method. The prepared pure and Mg-doped Mn2O3 nanoparticles were investigated to determine their structure, functional group, band gap, morphology and composition. The cubic structured Mn2O3 and Mg-doped Mn2O3 nanoparticles were clearly confirmed by X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscope (FE-SEM) micrographs. Fourier transform infrared (FTIR) spectroscopy spectra revealed two distinct vibration peaks corresponding to the symmetric stretching Mn–O and Mn–O–Mn, which was well supported by the UV and PL outcomes. A Cyclic Voltammetry study was explored for the prepared pure and Mg-doped samples at different scan rates (mV/s). Apparently, Mg-doped Mn2O3 nanoparticles exhibited the highest specific capacitance value of 266 F/g with an energy density of 430 Wh/kg. The prepared sample also exhibited antimicrobial activity by showing variation in the zone of inhibition with respect to selected bacteria and fungi. The results of the study suggest that the prepared Mg-doped nanoparticles could act as a promising supercapacitor, anti-biofilm, anti-oxidant agent and water purifier.
{"title":"Analyzing the synergistic effect of Mg on Mentha spicata L. mediated Mn2O3 nanoparticles for energy storage and bio-medical applications","authors":"Sainta Jostar T. , G. Johnsy Arputhavalli , Nithyadharseni Palaniyandy , S. Jebasingh , Mohammad Y. Alshahrani , G.S. Divya , P. Muthu Vijayalakshmi","doi":"10.1016/j.inoche.2024.113539","DOIUrl":"10.1016/j.inoche.2024.113539","url":null,"abstract":"<div><div>This article describes the facile preparation of cubic structured pure and Mg-doped Mn<sub>2</sub>O<sub>3</sub> nanoparticles by green synthesis method. The prepared pure and Mg-doped Mn<sub>2</sub>O<sub>3</sub> nanoparticles were investigated to determine their structure, functional group, band gap, morphology and composition. The cubic structured Mn<sub>2</sub>O<sub>3</sub> and Mg-doped Mn<sub>2</sub>O<sub>3</sub> nanoparticles were clearly confirmed by X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscope (FE-SEM) micrographs. Fourier transform infrared (FTIR) spectroscopy spectra revealed two distinct vibration peaks corresponding to the symmetric stretching Mn–O and Mn–O–Mn, which was well supported by the UV and PL outcomes. A Cyclic Voltammetry study was explored for the prepared pure and Mg-doped samples at different scan rates (mV/s). Apparently, Mg-doped Mn<sub>2</sub>O<sub>3</sub> <!-->nanoparticles exhibited the highest specific capacitance value of 266 F/g with an energy density of 430 Wh/kg. The prepared sample also exhibited antimicrobial activity by showing variation in the zone of inhibition with respect to selected bacteria and fungi. The results of the study suggest that the prepared Mg-doped nanoparticles could act as a promising supercapacitor, anti-biofilm, anti-oxidant agent and water purifier.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113539"},"PeriodicalIF":4.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-13DOI: 10.1016/j.inoche.2024.113549
Huaqiang Xie, Yongjie Zhan
Molybdenum oxides Mo4O11 and MoO2 of porous structures have been synthesized by annealing of precursor prepared in hydrothermal process, which is a facile route that different from the usual reducing treatment from MoO3 precursor. The converting from Mo4O11 to MoO2 has been identified and a hypothesis based on disproportionation reaction been verified. The solubility of as-prepared precursor can help to embed those molybdenum oxides in other porous materials to build up composite structures. And combined with MoO2 sample with large specific surface areas, structurally enhanced MoO2 product with designed shapes can also be provided.
{"title":"Porous molybdenum oxides prepared from hydrothermal precursor","authors":"Huaqiang Xie, Yongjie Zhan","doi":"10.1016/j.inoche.2024.113549","DOIUrl":"10.1016/j.inoche.2024.113549","url":null,"abstract":"<div><div>Molybdenum oxides Mo<sub>4</sub>O<sub>11</sub> and MoO<sub>2</sub> of porous structures have been synthesized by annealing of precursor prepared in hydrothermal process, which is a facile route that different from the usual reducing treatment from MoO<sub>3</sub> precursor. The converting from Mo<sub>4</sub>O<sub>11</sub> to MoO<sub>2</sub> has been identified and a hypothesis based on disproportionation reaction been verified. The solubility of as-prepared precursor can help to embed those molybdenum oxides in other porous materials to build up composite structures. And combined with MoO<sub>2</sub> sample with large specific surface areas, structurally enhanced MoO<sub>2</sub> product with designed shapes can also be provided.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113549"},"PeriodicalIF":4.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An alarming rise in antimicrobial resistance has been brought on by the overuse of antimicrobial drugs, especially antibiotics. Consequently, there is an urgent need for new materials that can effectively eliminate pathogens and prevent the spread of infections. This study focuses on the synthesis of Gadolinium Oxide Nanorods decorated with Graphene Oxide based nanocomposites and the study of their potential applications as bactericidal agents. Scanning Electron Microscopy and Energy dispersive X-ray analyses of the Gadolinium Oxide Nanorods-Graphene Oxide based nanocomposite are done. Transmission Electron Microscopy confirmed the Nanorods morphology of nanocomposite. Fourier Transform Infrared Spectroscopy Analysis confirmed the strong absorption bands in the range of 3458–3466 cm−1. The obtained X-ray diffraction peak of Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite has confirmed the crystalline structure of nanocomposite. The antibacterial mechanism of Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite against gram-positive and gram-negative bacteria showed good efficiency with 13- and 15-mm inhibition zones. The Minimum Inhibitory Concentration and Minimum Bactericidal Concentration value of Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite was found to be 7.81 µg/mL and 31.25 µg/mL against E. coli and 31.25 µg/mL and 62.5 µg/Ml against S. aureus. Bacterial Morphology after Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite treatment was studied by SEM as to determine the probable mechanism of antibacterial activity. This research will provide an excellent theoretical and practical basis for the synthesis of Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite and their bactericidal properties.
由于过度使用抗菌药物，尤其是抗生素，导致抗菌药耐药性惊人地上升。因此，迫切需要能有效消除病原体和防止感染传播的新材料。本研究的重点是基于氧化石墨烯纳米复合材料的氧化钆纳米棒的合成及其作为杀菌剂的潜在应用研究。对氧化钆纳米棒-氧化石墨烯基纳米复合材料进行了扫描电子显微镜和能量色散 X 射线分析。透射电子显微镜证实了纳米复合材料的纳米棒形态。傅立叶变换红外光谱分析证实了 3458-3466 cm-1 范围内的强吸收带。氧化钆纳米棒-氧化石墨烯纳米复合材料的 X 射线衍射峰证实了纳米复合材料的晶体结构。氧化钆纳米棒-氧化石墨烯纳米复合材料对革兰氏阳性菌和革兰氏阴性菌的抗菌机理显示出良好的效率，抑菌区分别为 13 毫米和 15 毫米。氧化钆纳米棒-氧化石墨烯纳米复合材料对大肠杆菌的最小抑菌浓度和最小杀菌浓度分别为 7.81 微克/毫升和 31.25 微克/毫升，对金黄色葡萄球菌的最小抑菌浓度和最小杀菌浓度分别为 31.25 微克/毫升和 62.5 微克/毫升。通过扫描电镜研究了氧化钆纳米棒-氧化石墨烯纳米复合材料处理后的细菌形态，以确定抗菌活性的可能机制。这项研究将为氧化钆纳米棒-氧化石墨烯纳米复合材料的合成及其杀菌性能提供良好的理论和实践基础。
{"title":"Single step synthesis of gadolinium oxide nanorods decorated graphene oxide nanocomposites as promising bactericidal agents for the biomedical sector","authors":"Kajal Yadav , Kamna Chaturvedi , Anju Singhwane , Avanish Kumar Srivastava , Sarika Verma","doi":"10.1016/j.inoche.2024.113562","DOIUrl":"10.1016/j.inoche.2024.113562","url":null,"abstract":"<div><div>An alarming rise in antimicrobial resistance has been brought on by the overuse of antimicrobial drugs, especially antibiotics. Consequently, there is an urgent need for new materials that can effectively eliminate pathogens and prevent the spread of infections. This study focuses on the synthesis of Gadolinium Oxide Nanorods decorated with Graphene Oxide based nanocomposites and the study of their potential applications as bactericidal agents. Scanning Electron Microscopy and Energy dispersive X-ray analyses of the Gadolinium Oxide Nanorods-Graphene Oxide based nanocomposite are done. Transmission Electron Microscopy confirmed the Nanorods morphology of nanocomposite. Fourier Transform Infrared Spectroscopy Analysis confirmed the strong absorption bands in the range of 3458–3466 cm<sup>−1</sup>. The obtained X-ray diffraction peak of Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite has confirmed the crystalline structure of nanocomposite. The antibacterial mechanism of Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite against gram-positive and gram-negative bacteria showed good efficiency with 13- and 15-mm inhibition zones. The Minimum Inhibitory Concentration and Minimum Bactericidal Concentration value of Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite was found to be 7.81 µg/mL and 31.25 µg/mL against <em>E. coli</em> and 31.25 µg/mL and 62.5 µg/Ml against <em>S. aureus</em>. Bacterial Morphology after Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite treatment was studied by SEM as to determine the probable mechanism of antibacterial activity. This research will provide an excellent theoretical and practical basis for the synthesis of Gadolinium Oxide Nanorods – Graphene Oxide based nanocomposite and their bactericidal properties.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113562"},"PeriodicalIF":4.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-13DOI: 10.1016/j.inoche.2024.113529
Mengmeng Zhang, Honghe Ren, Biao Deng, Yi Huang
In this research, a ZnSnO3@PDA/Na0.5Bi0.5TiO3 heterojunction was constructed by coating ZnSnO3 with PDA layer and further compounding Na0.5Bi0.5TiO3 with ZnSnO3@PDA through ultrasonic method, in which the PDA shell acted as interfacial electron transport bridge. The formation of this hybrid photocatalyst resulted in more efficient light utilization, raised charge conductivity and decreased band gap width. The adsorption and photocatalytic efficiency of ZnSnO3@PDA/Na0.5Bi0.5TiO3 for oxytetracycline and Acid chrome blue K removal were assessed. Compared with ZnSnO3, ZnSnO3@PDA and Na0.5Bi0.5TiO3, the ZnSnO3@PDA/Na0.5Bi0.5TiO3 manifested prominent improved adsorption and photocatalytic performance, which can eliminate 100 % oxytetracycline and Acid chrome blue K within 180 and 75 min, respectively. After five-run repeated experiments, the ZnSnO3@PDA/Na0.5Bi0.5TiO3 shows 87.9 % and 94.9 % degradation rate for oxytetracycline and Acid chrome blue K, respectively, demonstrating its sufficient stability. The boosted photocatalytic performance and reusability of ZnSnO3@PDA/Na0.5Bi0.5TiO3 are attributed to the distinctive Type I heterojunction between ZnSnO3 and Na0.5Bi0.5TiO3 as well as the PDA as interfacial electron transport bridge. The experiments on radical scavenging verified that the •O2− and h+ oxidants are largely responsible for the photocatalytic reactions. This type I ZnSnO3@PDA/Na0.5Bi0.5TiO3 heterojunction using PDA as electron transport layer may deliver a new reference for designing and fabricating efficient heterostructural photocatalysts in the environmental purification territories.
{"title":"Type-I heterojunction ZnSnO3@PDA/Na0.5Bi0.5TiO3 with PDA as interfacial electron transport bridge for efficient degradation of oxytetracycline and Acid chrome blue K","authors":"Mengmeng Zhang, Honghe Ren, Biao Deng, Yi Huang","doi":"10.1016/j.inoche.2024.113529","DOIUrl":"10.1016/j.inoche.2024.113529","url":null,"abstract":"<div><div>In this research, a ZnSnO<sub>3</sub>@PDA/Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> heterojunction was constructed by coating ZnSnO<sub>3</sub> with PDA layer and further compounding Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> with ZnSnO<sub>3</sub>@PDA through ultrasonic method, in which the PDA shell acted as interfacial electron transport bridge. The formation of this hybrid photocatalyst resulted in more efficient light utilization, raised charge conductivity and decreased band gap width. The adsorption and photocatalytic efficiency of ZnSnO<sub>3</sub>@PDA/Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> for oxytetracycline and Acid chrome blue K removal were assessed. Compared with ZnSnO<sub>3</sub>, ZnSnO<sub>3</sub>@PDA and Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub>, the ZnSnO<sub>3</sub>@PDA/Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> manifested prominent improved adsorption and photocatalytic performance, which can eliminate 100 % oxytetracycline and Acid chrome blue K within 180 and 75 min, respectively. After five-run repeated experiments, the ZnSnO<sub>3</sub>@PDA/Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> shows 87.9 % and 94.9 % degradation rate for oxytetracycline and Acid chrome blue K, respectively, demonstrating its sufficient stability. The boosted photocatalytic performance and reusability of ZnSnO<sub>3</sub>@PDA/Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> are attributed to the distinctive Type I heterojunction between ZnSnO<sub>3</sub> and Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> as well as the PDA as interfacial electron transport bridge. The experiments on radical scavenging verified that the •O<sub>2</sub><sup>−</sup> and h<sup>+</sup> oxidants are largely responsible for the photocatalytic reactions. This type I ZnSnO<sub>3</sub>@PDA/Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> heterojunction using PDA as electron transport layer may deliver a new reference for designing and fabricating efficient heterostructural photocatalysts in the environmental purification territories.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113529"},"PeriodicalIF":4.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study portrays the preparation of silver nanoparticles (AgNPs) using the leaf extract of Tradescantia spathacea (TS) through a green synthetic protocol. The green TS-AgNPs synthesized were physiochemically evaluated for its UV–Vis absorbance, IR vibrational behavior, powder diffraction nature, size and shape by HR-TEM procedures. The surface plasmon resonance (SPR) spectra of the TS-AgNPs exhibit a SPR peak maximum at 415 nm; powder XRD analysis proved the purity and crystallinity of the synthesized TS-AgNPs. Particle size resulting from HR-TEM discovered numerous spherical particles with 18 nm average size, consistent with the XRD analysis. Presence of metabolites such as alcohols, phenols,coumarins, phytols, phytosterols, tannins, glycosides, and proteins were identified with preliminary phytochemical and FTIR studies. In vitro antimicrobial evaluation demonstrated that the resulted TS-AgNPs exhibited an outstanding antimicrobial activity against both Gram-negative and Gram-positive bacteria in a dose-dependent manner. Additionally, the nanoparticles showed dose-dependent anti-biofilm activity (89.45 ± 3.56 % activity at 200 μg/mL), DPPH scavenging activity (96.5 ± 3.1 % at 200 μg/mL with an IC50 value of 43.62), and inhibition of heat-induced albumin denaturation (in vitro anti-inflammatory activity) with 61.52 ± 2.25 % at 400 µg/mL, comparable to the diclofenac standard (94.78 % at 400 μg/mL). Furthermore, the TS-AgNPs demonstrated an excellent blood compatibility, cytotoxicity against MCF-7 cancer cell lines and exhibits photocatalytic activity in degrading Congo red dye (96.19 % degradation was achieved).
{"title":"Versatile silver nanoparticle using Tradescantia spathacea leaf extract: Synthesis, physiochemical, in vitro biological activity and photocatalytic evaluations","authors":"Kamalakkannan Kaliappan , Madheswaran Sivasankari , Jayaprakash Jayabalan , Manjusha Bhange , Hemalatha Pushparaj , Selvaraja Elumalai , Sachin Sivajirao Pandit , Vijayabaskaran Manickam , Ganesh Mani","doi":"10.1016/j.inoche.2024.113537","DOIUrl":"10.1016/j.inoche.2024.113537","url":null,"abstract":"<div><div>This study portrays the preparation of silver nanoparticles (AgNPs) using the leaf extract of <em>Tradescantia spathacea</em> (TS) through a green synthetic protocol. The green TS-AgNPs synthesized were physiochemically evaluated for its UV–Vis absorbance, IR vibrational behavior, powder diffraction nature, size and shape by HR-TEM procedures. The surface plasmon resonance (SPR) spectra of the TS-AgNPs exhibit a SPR peak maximum at 415 nm; powder XRD analysis proved the purity and crystallinity of the synthesized TS-AgNPs. Particle size resulting from HR-TEM discovered numerous spherical particles with 18 nm average size, consistent with the XRD analysis. Presence of metabolites such as alcohols, phenols,coumarins, phytols, phytosterols, tannins, glycosides, and proteins were identified with preliminary phytochemical and FTIR studies. In vitro antimicrobial evaluation demonstrated that the resulted TS-AgNPs exhibited an outstanding antimicrobial activity against both Gram-negative and Gram-positive bacteria in a dose-dependent manner. Additionally, the nanoparticles showed dose-dependent anti-biofilm activity (89.45 ± 3.56 % activity at 200 μg/mL), DPPH scavenging activity (96.5 ± 3.1 % at 200 μg/mL with an IC50 value of 43.62), and inhibition of heat-induced albumin denaturation (in vitro anti-inflammatory activity) with 61.52 ± 2.25 % at 400 µg/mL, comparable to the diclofenac standard (94.78 % at 400 μg/mL). Furthermore, the TS-AgNPs demonstrated an excellent blood compatibility, cytotoxicity against MCF-7 cancer cell lines and exhibits photocatalytic activity in degrading Congo red dye (96.19 % degradation was achieved).</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113537"},"PeriodicalIF":4.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-13DOI: 10.1016/j.inoche.2024.113543
Yao Ge , Hai-Qun Xu , Qinglin Huang , Xinyu Jia , Haixia Ji , Qifang Ren , Yenan Yang , Xuan Wu , Yi Ding
In this work, a novel Ag/ZnO/diatomite composites was synthesized by microwave-assisted hydrothermal technique and used for the photocatalytic degradation of gaseous toluene. Various approaches were used to characterize the structural, morphological, optical and photoelectric properties of the composites. Photocatalytic degradation of gaseous toluene by Ag/ZnO/diatomite composites under visible-light irradiation was investigated. The experimental results demonstrate that the degradation efficiency of Ag/ZnO/diatomite composites reaches 90.4 %, which is better than that of ZnO/diatomite composites and ZnO. Ag/ZnO/diatomite composites have a pseudo-first-order rate constant of 0.01543 min−1, which is 6.57 times more than that of ZnO. Through active species capture experiments, ·O2− and ·OH are the primary active species. Furthermore, the possible degradation mechanisms and pathways are proposed, the high performance of Ag/ZnO/diatomite composites can be attributed to the synergistic effect of ZnO, diatomite and Ag nanoparticles.
{"title":"Microwave-assisted synthesis of Ag/ZnO/diatomite composites for photocatalytic degradation of gaseous toluene","authors":"Yao Ge , Hai-Qun Xu , Qinglin Huang , Xinyu Jia , Haixia Ji , Qifang Ren , Yenan Yang , Xuan Wu , Yi Ding","doi":"10.1016/j.inoche.2024.113543","DOIUrl":"10.1016/j.inoche.2024.113543","url":null,"abstract":"<div><div>In this work, a novel Ag/ZnO/diatomite composites was synthesized by microwave-assisted hydrothermal technique and used for the photocatalytic degradation of gaseous toluene. Various approaches were used to characterize the structural, morphological, optical and photoelectric properties of the composites. Photocatalytic degradation of gaseous toluene by Ag/ZnO/diatomite composites under visible-light irradiation was investigated. The experimental results demonstrate that the degradation efficiency of Ag/ZnO/diatomite composites reaches 90.4 %, which is better than that of ZnO/diatomite composites and ZnO. Ag/ZnO/diatomite composites have a pseudo-first-order rate constant of 0.01543 min<sup>−1</sup>, which is 6.57 times more than that of ZnO. Through active species capture experiments, ·O<sub>2</sub><sup>−</sup> and ·OH are the primary active species. Furthermore, the possible degradation mechanisms and pathways are proposed, the high performance of Ag/ZnO/diatomite composites can be attributed to the synergistic effect of ZnO, diatomite and Ag nanoparticles.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113543"},"PeriodicalIF":4.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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