Zeitschrift für Physikalische Chemie最新文献_第6页

Exploring the dynamics of halogen and hydrogen bonds in halogenated coumarins 探索卤代香豆素中卤素键和氢键的动态变化

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-15 DOI: 10.1515/zpch-2023-0570

Mebin Varghese, Jisha Mary Thomas, Abdullah Y. Alzahrani, Renjith Thomas

{"title":"Exploring the dynamics of halogen and hydrogen bonds in halogenated coumarins","authors":"Mebin Varghese, Jisha Mary Thomas, Abdullah Y. Alzahrani, Renjith Thomas","doi":"10.1515/zpch-2023-0570","DOIUrl":"https://doi.org/10.1515/zpch-2023-0570","url":null,"abstract":"\u0000 Halogen bonds find application in supramolecular chemistry, DNA Holliday junction, drug design, organic catalysis and various other fields. Coumarin derivatives are high in demand due to their application in photochemotherapy, drugs and other cancer treatments. Halogenated coumarins are widely known for their biological activities. There exists a competition between the halogen bond and hydrogen bond in singly hydrated halogenated coumarins. The competition between hydrogen and halogen bonding interactions in 3-halogenated 4-hydroxyl coumarin [coumarin derivative; halogen, X = F (A), Cl (B), Br (C), I (D)] with water molecule in the corresponding binding regions C3–X and C2=O4 is studied. This study was conducted using PBE0 D3BJ with augmented correlation consistent basis set in order to include the diffuse functions. Improved findings for non-bonded distances and much more distinct intramolecular effects were obtained using BJ-damping. In the singly-hydrated systems, the water molecule forms a hydrogen bond with C2=O4 in all the halogenated molecules, whereas halogen bonding between the water oxygen and C2–X exists only in the case of X = Br (C) and I (D). The absence of a halogen-bonded structure in singly-hydrated chlorine and fluorine substituted coumarin derivative is therefore attributed to the competing hydrogen-bonding interaction with C2=O4. RDG scatter plot as well QTAIM analysis implied that halogen bond exists between water molecule and the coumarin derivative. Further, the most modern local energy decomposition (LED) analysis of intermolecular interaction was also studied using DLPNO-CCSD(T). Finally, ab initio molecular dynamics was also performed.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"404 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139834937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile formation of STO/gC3N4 hybrid composite to effectively degrade the dye and antibiotic under white light 轻松制备 STO/gC3N4 杂化复合材料，在白光下有效降解染料和抗生素

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-15 DOI: 10.1515/zpch-2023-0398

K. Aravinthkumar, Smagul Karazhanov, C. Raja Mohan

{"title":"Facile formation of STO/gC3N4 hybrid composite to effectively degrade the dye and antibiotic under white light","authors":"K. Aravinthkumar, Smagul Karazhanov, C. Raja Mohan","doi":"10.1515/zpch-2023-0398","DOIUrl":"https://doi.org/10.1515/zpch-2023-0398","url":null,"abstract":"\u0000 A novel organic-inorganic photocatalyst like layer structured graphitic carbon nitride (g-C3N4 or CN) hybrid with strontium titanate (SrTiO3 or STO) was prepared by a precipitation-sonication technique for photocatalytic activity. The crystal phases, morphologies, elemental composition, optical properties, and porous structure of the prepared pristine and STO/CN hybrid composite were measured using various physicochemical characterizations. It is indicated that STO nanospheres were effectively loaded on the g-C3N4 nanosheets, resulting in the STO/CN hybrid composite, high surface area, enhanced visible-light absorption, enhancing photoinduced charge separation and suppressing the recombination rate. Furthermore, the 3 wt% of g-C3N4 composited STO (STO/CN-3) catalyst demonstrated higher photocatalytic activity than pristine STO in 100 min under white light irradiation, reaching the degradation efficiency of 92.66 % and 93.31 % toward methylene blue (MB) and tetracycline (TC), respectively. The improved photocatalytic activity of STO/gCN hybrid composite could be ascribed to the synergistic effect between STO and CN with strong interfacial interaction facilitating efficient charge separation and inhibiting the charge recombination of photogenerated electron-hole pairs. Moreover, a possible photocatalytic mechanism has been proposed for the degradation of MB and TC. Besides, the excellent photocatalytic performance, STO/CN-3 nanocomposite also exhibits outstanding photostability under the current factors, suggesting that they are suitable for practical applications.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"55 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139775047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effective synthesis of nitrogen doped carbon nanotubes over transition metal loaded mesoporous catalysts for energy storage of supercapacitor applications 在过渡金属负载介孔催化剂上有效合成掺氮碳纳米管，用于超级电容器的储能应用

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-15 DOI: 10.1515/zpch-2023-0458

Ragavan Rajamanickam, Boopathi Ganesan, Ikhyun Kim, Imran Hasan, Pandurangan Arumugam, Sivaprakash Paramasivam

{"title":"Effective synthesis of nitrogen doped carbon nanotubes over transition metal loaded mesoporous catalysts for energy storage of supercapacitor applications","authors":"Ragavan Rajamanickam, Boopathi Ganesan, Ikhyun Kim, Imran Hasan, Pandurangan Arumugam, Sivaprakash Paramasivam","doi":"10.1515/zpch-2023-0458","DOIUrl":"https://doi.org/10.1515/zpch-2023-0458","url":null,"abstract":"\u0000 In the present work, the nitrogen doped carbon nanotubes (NCNTs) were prepared over various transition metal loaded mesoporous SBA-15 catalysts by the CVD method for supercapacitor application. Mesoporous Siliceous SBA-15 support and transition metals (Cr, Fe, Co, Ni and Cu) loaded SBA-15 (M/SBA-15) catalysts were prepared through hydrothermal and wet impregnation process, respectively. The catalytic performance of all the prepared catalysts were evaluated by synthesizing NCNTs by CVD at 800 °C using triethylamine as the precursor. The NCNTs produced over Ni/SBA-15 have an outstanding specific capacitance of 263 F g−1 at 0.5 A g−1 in 1.0 M H2SO4 aqueous solution according to the electrochemical investigations because of its increased nitrogen content of 3.2 at.%. Furthermore, a two-electrode based symmetric device was construct and tested. The fabricated device showed the specific capacitance of 113 F g−1 at 0.5 A g−1 with high energy density of 10 W h Kg−1 at the power density of 333 W kg−1. The NCNT showed 96 % of capacitance retention even after 1000 cycles. The synergism of high nitrogen content and bamboo-like graphitized structure resulted in excellent specific capacitance, better cycle life and rate performance of the prepared NCNTs as supercapacitor electrode.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"303 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139835371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agricultural waste upcycling into improved production of triacyl glycerol acyl hydrolases 农业废弃物升级再利用，改进三酰甘油酰基水解酶的生产

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-14 DOI: 10.1515/zpch-2023-0474

Hammad Majeed, T. Iftikhar, Alia Siddique

{"title":"Agricultural waste upcycling into improved production of triacyl glycerol acyl hydrolases","authors":"Hammad Majeed, T. Iftikhar, Alia Siddique","doi":"10.1515/zpch-2023-0474","DOIUrl":"https://doi.org/10.1515/zpch-2023-0474","url":null,"abstract":"\u0000 Agricultural waste upcycling is crucial in the context of climate change. Utilizing seven agricultural by-products as basal substrates, coconut meal (Cocos nucifera) emerged as the most efficient, supporting the highest extracellular lipase (triacyl glycerol acyl hydrolases) yield i.e., 5.27 ± 1.75a U mL−1. This study explored the production of extracellular lipases through solid-state fermentation by using co-cultures of Aspergillus niger, wild and mutant strains. Optimization experiments revealed that 30 g of coconut meal resulted is optimal for supporting highest lipases activity of 6.16 ± 0.16a U mL−1. Incubation at 30 °C, 1 mL inoculum size, and distilled water as a diluent further enhanced lipolytic activity. The study identified sucrose as the preferred carbon source, with 4 % concentration demonstrating the highest activity at 13.66 ± 0.33a U mL−1. Supplementary sources like 1 % olive oil and nitrogen sources such as ammonium chloride and peptone significantly increased lipases production. Magnesium sulfate (0.25 %) among metal ions exhibited the highest lipolytic potential i.e., 19.98 ± 0.01a U mL−1. The crude lipases displayed optimal activity at pH 5.0 and 30 °C, with positive effects observed for Fe2+, Ca2+, and Mg2+, while Co2+, Na+, and Hg2+ had negative impacts on lipases activity. This research not only contributes to understanding the factors influencing lipase production and activity, but also serves as an agricultural waste upcycling technique.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"66 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139776883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agricultural waste upcycling into improved production of triacyl glycerol acyl hydrolases 农业废弃物升级再利用，改进三酰甘油酰基水解酶的生产

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-14 DOI: 10.1515/zpch-2023-0474

Hammad Majeed, T. Iftikhar, Alia Siddique

{"title":"Agricultural waste upcycling into improved production of triacyl glycerol acyl hydrolases","authors":"Hammad Majeed, T. Iftikhar, Alia Siddique","doi":"10.1515/zpch-2023-0474","DOIUrl":"https://doi.org/10.1515/zpch-2023-0474","url":null,"abstract":"\u0000 Agricultural waste upcycling is crucial in the context of climate change. Utilizing seven agricultural by-products as basal substrates, coconut meal (Cocos nucifera) emerged as the most efficient, supporting the highest extracellular lipase (triacyl glycerol acyl hydrolases) yield i.e., 5.27 ± 1.75a U mL−1. This study explored the production of extracellular lipases through solid-state fermentation by using co-cultures of Aspergillus niger, wild and mutant strains. Optimization experiments revealed that 30 g of coconut meal resulted is optimal for supporting highest lipases activity of 6.16 ± 0.16a U mL−1. Incubation at 30 °C, 1 mL inoculum size, and distilled water as a diluent further enhanced lipolytic activity. The study identified sucrose as the preferred carbon source, with 4 % concentration demonstrating the highest activity at 13.66 ± 0.33a U mL−1. Supplementary sources like 1 % olive oil and nitrogen sources such as ammonium chloride and peptone significantly increased lipases production. Magnesium sulfate (0.25 %) among metal ions exhibited the highest lipolytic potential i.e., 19.98 ± 0.01a U mL−1. The crude lipases displayed optimal activity at pH 5.0 and 30 °C, with positive effects observed for Fe2+, Ca2+, and Mg2+, while Co2+, Na+, and Hg2+ had negative impacts on lipases activity. This research not only contributes to understanding the factors influencing lipase production and activity, but also serves as an agricultural waste upcycling technique.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"120 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microwave-accelerated heating technique in fabrication of silver nanoparticles using propolis extract: optimization and characterization 利用蜂胶提取物制造银纳米粒子的微波加速加热技术：优化与表征

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-14 DOI: 10.1515/zpch-2022-0148

Farhan Ahadi, A. Javadi, Hoda Jafarizadeh-Malmiri, N. Anarjan, Hamid Mirzaei

{"title":"Microwave-accelerated heating technique in fabrication of silver nanoparticles using propolis extract: optimization and characterization","authors":"Farhan Ahadi, A. Javadi, Hoda Jafarizadeh-Malmiri, N. Anarjan, Hamid Mirzaei","doi":"10.1515/zpch-2022-0148","DOIUrl":"https://doi.org/10.1515/zpch-2022-0148","url":null,"abstract":"\u0000 Silver nanoparticle (AgNPs) is known as a new generation of antibiotics with high bactericidal activity and resistance toward numerous bacteria strains. In the present study, AgNPs were synthesized using propolis extract and microwave heating technique. Results indicated that, the prepared hydroalcoholic propolis extract had brix, turbidity, total phenol content and antioxidant activity of 5.21° Bx, 1.75 % a.u., 82.52 mg/g (gallic acid) and 93.32 %, respectively. FTIR analysis also indicated that the prepared extract had several main functional groups such as hydroxyl, carboxyl, amide I, amin and esters, which those could act as reducing and stabilizing agents in fabrication of stable AgNPs. Furthermore, GC-MS analysis demonstrated that alpha-terpinene, coumaran, p-methoxycinnamic acid, dimethyl caffeic acid and pinostrobin chalcone were the main bioactive compounds of the prepared propolis extract. Results revealed that AgNPs with small particle size (86 nm) and polydespersity index (0.299), and high zeta potential (−23.34) values could be synthesized using 0.1 mL of the extract in combination to 9 mL silver nitrate (1 mM) under microwave heating for 30 s. TEM analysis demonstrated that spherical fabricated AgNPs had uniform particle size distribution with particle size of less than 100 nm. Finally, synthesized AgNps indicated higher bactericidal activity against Listeria monocytogenes and Escherichia coli, with obtained clear zone diameter of 22 and 19 mm, respectively.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"17 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139777270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of lanthanum (La) substitution on the magnetic and electrical properties of nickel ferrites: an investigation of its doping concentrations 镧（La）替代对镍铁氧体磁性和电性的影响：对其掺杂浓度的研究

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-14 DOI: 10.1515/zpch-2023-0485

Anandhi Deenan Venugopal, Selvanandan Selvaraj, Jhelai Sahadevan, Ikhyun Kim, Parameshwari Ramalingam, Sivaprakash Paramasivam

{"title":"Effect of lanthanum (La) substitution on the magnetic and electrical properties of nickel ferrites: an investigation of its doping concentrations","authors":"Anandhi Deenan Venugopal, Selvanandan Selvaraj, Jhelai Sahadevan, Ikhyun Kim, Parameshwari Ramalingam, Sivaprakash Paramasivam","doi":"10.1515/zpch-2023-0485","DOIUrl":"https://doi.org/10.1515/zpch-2023-0485","url":null,"abstract":"\u0000 The structural, morphological, magnetic, and dielectric properties of lanthanum substituted nickel ferrite (NiLa\u0000 x\u0000 Fe2−x\u0000 O4) nanoparticles have been reported in this article. The amount of lanthanum substitution in NiLa\u0000 x\u0000 Fe2−x\u0000 O4 sample was varied from x = 0.025 to 0.125. The nanocrystalline Ni–La ferrites were synthesized using a solution combustion reaction (SCR) method. The orthorhombic crystal system of space group Pnma (62) is shown as the single-phase in all samples through structural investigation utilizing an X-ray diffraction (XRD) pattern. The observed trend indicates a positive correlation between the concentration of La and the corresponding rise in the predicted crystallite size values, which range from 60.5 nm to 65.2 nm. The nanoscale of the surface morphology has been confirmed by the utilisation of field emission scanning electron microscopy (FESEM). Energy dispersive X-ray (EDAX) mapping provides the compositional evidence for the prepared Ni–La ferrites. In addition, X-ray photoelectron spectroscopy (XPS) determines the ionic state of the individual atoms present in these samples. It reveals that there are no changes in the ionic state of the parent component atoms by substituting La. EDAX and XPS evidence the purity of prepared NiLa\u0000 x\u0000 Fe2−x\u0000 O4 samples without any other impurity elements. By regulating the composition of dopants, this research can substantiate the superparamagnetic characteristics of ferrites. The paramagnetic nature of lanthanum atoms involves in reducing the coercivity value. The dielectric measurement on NiLa\u0000 x\u0000 Fe2−x\u0000 O4 samples reveals that La3+ substitution effectively influence the electro-transport properties.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"50 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139777358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microwave-accelerated heating technique in fabrication of silver nanoparticles using propolis extract: optimization and characterization 利用蜂胶提取物制造银纳米粒子的微波加速加热技术：优化与表征

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-14 DOI: 10.1515/zpch-2022-0148

Farhan Ahadi, A. Javadi, Hoda Jafarizadeh-Malmiri, N. Anarjan, Hamid Mirzaei

{"title":"Microwave-accelerated heating technique in fabrication of silver nanoparticles using propolis extract: optimization and characterization","authors":"Farhan Ahadi, A. Javadi, Hoda Jafarizadeh-Malmiri, N. Anarjan, Hamid Mirzaei","doi":"10.1515/zpch-2022-0148","DOIUrl":"https://doi.org/10.1515/zpch-2022-0148","url":null,"abstract":"\u0000 Silver nanoparticle (AgNPs) is known as a new generation of antibiotics with high bactericidal activity and resistance toward numerous bacteria strains. In the present study, AgNPs were synthesized using propolis extract and microwave heating technique. Results indicated that, the prepared hydroalcoholic propolis extract had brix, turbidity, total phenol content and antioxidant activity of 5.21° Bx, 1.75 % a.u., 82.52 mg/g (gallic acid) and 93.32 %, respectively. FTIR analysis also indicated that the prepared extract had several main functional groups such as hydroxyl, carboxyl, amide I, amin and esters, which those could act as reducing and stabilizing agents in fabrication of stable AgNPs. Furthermore, GC-MS analysis demonstrated that alpha-terpinene, coumaran, p-methoxycinnamic acid, dimethyl caffeic acid and pinostrobin chalcone were the main bioactive compounds of the prepared propolis extract. Results revealed that AgNPs with small particle size (86 nm) and polydespersity index (0.299), and high zeta potential (−23.34) values could be synthesized using 0.1 mL of the extract in combination to 9 mL silver nitrate (1 mM) under microwave heating for 30 s. TEM analysis demonstrated that spherical fabricated AgNPs had uniform particle size distribution with particle size of less than 100 nm. Finally, synthesized AgNps indicated higher bactericidal activity against Listeria monocytogenes and Escherichia coli, with obtained clear zone diameter of 22 and 19 mm, respectively.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"58 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of lanthanum (La) substitution on the magnetic and electrical properties of nickel ferrites: an investigation of its doping concentrations 镧（La）替代对镍铁氧体磁性和电性的影响：对其掺杂浓度的研究

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-14 DOI: 10.1515/zpch-2023-0485

Anandhi Deenan Venugopal, Selvanandan Selvaraj, Jhelai Sahadevan, Ikhyun Kim, Parameshwari Ramalingam, Sivaprakash Paramasivam

{"title":"Effect of lanthanum (La) substitution on the magnetic and electrical properties of nickel ferrites: an investigation of its doping concentrations","authors":"Anandhi Deenan Venugopal, Selvanandan Selvaraj, Jhelai Sahadevan, Ikhyun Kim, Parameshwari Ramalingam, Sivaprakash Paramasivam","doi":"10.1515/zpch-2023-0485","DOIUrl":"https://doi.org/10.1515/zpch-2023-0485","url":null,"abstract":"\u0000 The structural, morphological, magnetic, and dielectric properties of lanthanum substituted nickel ferrite (NiLa\u0000 x\u0000 Fe2−x\u0000 O4) nanoparticles have been reported in this article. The amount of lanthanum substitution in NiLa\u0000 x\u0000 Fe2−x\u0000 O4 sample was varied from x = 0.025 to 0.125. The nanocrystalline Ni–La ferrites were synthesized using a solution combustion reaction (SCR) method. The orthorhombic crystal system of space group Pnma (62) is shown as the single-phase in all samples through structural investigation utilizing an X-ray diffraction (XRD) pattern. The observed trend indicates a positive correlation between the concentration of La and the corresponding rise in the predicted crystallite size values, which range from 60.5 nm to 65.2 nm. The nanoscale of the surface morphology has been confirmed by the utilisation of field emission scanning electron microscopy (FESEM). Energy dispersive X-ray (EDAX) mapping provides the compositional evidence for the prepared Ni–La ferrites. In addition, X-ray photoelectron spectroscopy (XPS) determines the ionic state of the individual atoms present in these samples. It reveals that there are no changes in the ionic state of the parent component atoms by substituting La. EDAX and XPS evidence the purity of prepared NiLa\u0000 x\u0000 Fe2−x\u0000 O4 samples without any other impurity elements. By regulating the composition of dopants, this research can substantiate the superparamagnetic characteristics of ferrites. The paramagnetic nature of lanthanum atoms involves in reducing the coercivity value. The dielectric measurement on NiLa\u0000 x\u0000 Fe2−x\u0000 O4 samples reveals that La3+ substitution effectively influence the electro-transport properties.","PeriodicalId":506520,"journal":{"name":"Zeitschrift für Physikalische Chemie","volume":"113 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139837236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Climate resilience plastic degradation potential of Pseudomonas putida isolated from the soil of plastic waste dumping sites to reduce GHG emissions 从塑料垃圾倾倒场土壤中分离出的假单胞菌降解塑料以减少温室气体排放的气候适应潜力

Zeitschrift für Physikalische Chemie Pub Date : 2024-02-13 DOI: 10.1515/zpch-2023-0316

Hammad Majeed, T. Iftikhar, Qamar Abbas

引用次数: 0