Advances in Natural Sciences: Nanoscience and Nanotechnology最新文献

筛选
英文 中文
Green synthesis of ZnO nanoparticles using Lantana camara leaf extract for the enhancement of plant growth 利用香樟叶提取物绿色合成氧化锌纳米粒子以促进植物生长
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-27 DOI: 10.1088/2043-6262/ad6cc0
Pushpendra Pratap Singh, Sarika Chaturvedi, Tripti Bhatnagar, Sumistha Das, Nitai Debnath
{"title":"Green synthesis of ZnO nanoparticles using Lantana camara leaf extract for the enhancement of plant growth","authors":"Pushpendra Pratap Singh, Sarika Chaturvedi, Tripti Bhatnagar, Sumistha Das, Nitai Debnath","doi":"10.1088/2043-6262/ad6cc0","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6cc0","url":null,"abstract":"Zinc is an important micronutrient for plants, involved in numerous physiological processes as well as numerous enzymatic and metabolic events. Zinc deficiency results in slowed plant development, higher chlorosis rates, smaller leaves, and fewer tillers, which lengthen the crop maturity period and lowers crop quality. In the present study, zinc oxide nanoparticles (ZnONPs) were synthesized through co-precipitation approach by using <italic toggle=\"yes\">Lantana camara</italic> plant leaf extract. The synthesized ZnONPs were hexagonal in shape with mean size of around 60 nm. The bactericidal activity of ZnONPs was assessed against three phytopathogenic bacterial strains namely <italic toggle=\"yes\">Ralstonia solanacearum</italic>, <italic toggle=\"yes\">Xanthomonas campestris</italic> and <italic toggle=\"yes\">Erwinia carotovora</italic> through broth dilution method. The MIC50 of ZnONPs was 248.33 <italic toggle=\"yes\">μ</italic>g ml<sup>−1</sup>, 320 .27 <italic toggle=\"yes\">μ</italic>g ml<sup>−1</sup> and 320.95 <italic toggle=\"yes\">μ</italic>g ml<sup>−1</sup> against <italic toggle=\"yes\">R. solanacearum</italic>, <italic toggle=\"yes\">X. campestris</italic> and <italic toggle=\"yes\">E. carotovora</italic> respectively. The fungiciadal activity of ZnONPs against three phytopathogenic fungal strains was studied by poison food technique. It was observed that 500 ppm ZnONPs could inhbit 86%, 85% and 55% growth of <italic toggle=\"yes\">Alterneria solani, Fusarium oxysporum</italic> and <italic toggle=\"yes\">Athelia rolfsii</italic> respectively. The efficacy of ZnONPs as nano fertilizer was evaluated in <italic toggle=\"yes\">Solanum lycopersicum</italic> Linn. by foliar spray under laboratory condition and it was observed that in comparison with micron sized ZnO, ZnONP treatment could significantly boost up fresh and dry weight, root and shoot length, chlorophyll, lipid and carbohydrate content of the plants.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210513","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
Importance of nano-carriers, surfactant system, and their loading mechanism to improve the absorption and bio-availability of drugs: a review 纳米载体、表面活性剂系统及其负载机制对改善药物吸收和生物利用率的重要性:综述
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-22 DOI: 10.1088/2043-6262/ad6cbf
Nazeer Abdul Azeez, Krishnaswami Venkateshwaran, Ruckmani Kandasamy, Muthupandian Saravanan, Vijaykumar Sudarshana Deepa
{"title":"Importance of nano-carriers, surfactant system, and their loading mechanism to improve the absorption and bio-availability of drugs: a review","authors":"Nazeer Abdul Azeez, Krishnaswami Venkateshwaran, Ruckmani Kandasamy, Muthupandian Saravanan, Vijaykumar Sudarshana Deepa","doi":"10.1088/2043-6262/ad6cbf","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6cbf","url":null,"abstract":"Improving the apparent solubility of poorly soluble therapeutic molecules with poor absorption into the circulatory system is a significant research question in drug discovery. This enhancement is achieved by delivering drugs through nano-carriers that provide apparent solubility with its surfactant. The effectiveness of a nano-carrier is relied majorly on its loading efficiency which is determined by the extent of interaction between the drug and the surfactants of the carriers. The loading effectiveness can be reckoned with a better understanding of the drug-surfactant conjugation mechanism. Hence this review comprehends the different nano-carriers, their appropriate surfactant systems, and the loading mechanism of drugs with surfactants through different bonds. Further, the current status and prospects of the nano-carriers are briefly summarized at last to expound on the significance of these nano-carriers in drug delivery.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210516","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
Lipid nanoparticles: a sustainable solution for crop disease management 脂质纳米颗粒:作物病害管理的可持续解决方案
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-22 DOI: 10.1088/2043-6262/ad6cbe
Abhishek Pathak, Neetesh Mandal, Devanshi Chandel Upadhyaya, Neha Joshi, Chandrama Prakash Upadhyaya
{"title":"Lipid nanoparticles: a sustainable solution for crop disease management","authors":"Abhishek Pathak, Neetesh Mandal, Devanshi Chandel Upadhyaya, Neha Joshi, Chandrama Prakash Upadhyaya","doi":"10.1088/2043-6262/ad6cbe","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6cbe","url":null,"abstract":"The global challenge of achieving sustainable agricultural productivity and ensuring food security is exacerbated by the threat of phytopathogens and pests, which cause substantial damage and result in annual production losses of approximately 20%–40%, amounting to around 40 billion US dollars worldwide. Current reliance on conventional pesticides for crop disease management not only poses risks to human, animal, and environmental health but also contributes to the development of resistant pathogens. In response to this pressing issue, innovative technologies utilizing nanomaterials offer a promising alternative. These nanomaterials including lipid based nanoparticles (LNPs) can encapsulate and deliver pesticidal active ingredients in a controlled and targeted manner, presenting opportunities to enhance efficacy and efficiency while minimizing environmental impact. This approach represents a crucial step towards sustainable agriculture, preserving agro-ecosystem resilience and ensuring global food security. This review aims to provide an overview of the current state of knowledge regarding the use of LNPs in agriculture, with a focus on their applications for crop disease management.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210515","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
Structure and properties analysis of yttrium doped high-voltage LiNi0.5Mn1.5O4 cathode materials for Li-ion batteries 用于锂离子电池的掺钇高电压 LiNi0.5Mn1.5O4 正极材料的结构和性能分析
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-22 DOI: 10.1088/2043-6262/ad6cc5
T Y S Panca Putra, Nadhifah Salsabila, Sudaryanto1suda014@brin.go.id
{"title":"Structure and properties analysis of yttrium doped high-voltage LiNi0.5Mn1.5O4 cathode materials for Li-ion batteries","authors":"T Y S Panca Putra, Nadhifah Salsabila, Sudaryanto1suda014@brin.go.id","doi":"10.1088/2043-6262/ad6cc5","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6cc5","url":null,"abstract":"High voltage cathode spinel material of LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> was doped by yttrium (Y) element in the form of LiNi<sub>0.5</sub>Mn<sub>1.5−<italic toggle=\"yes\">x</italic>\u0000</sub>Y<sub>\u0000<italic toggle=\"yes\">x</italic>\u0000</sub>O<sub>4</sub> (x = 0, 0.05, 0.1) for Li-ion batteries. Structure and properties analysis was conducted to study the effect of Y addition on the crystal structure and the electrochemical performances of LiNi<sub>0.5</sub>Mn<sub>1.5−<italic toggle=\"yes\">x</italic>\u0000</sub>Y<sub>\u0000<italic toggle=\"yes\">x</italic>\u0000</sub>O<sub>4</sub>. The results show that undoped LiNi<sub>0.5-</sub>Mn<sub>1.5</sub>O<sub>4</sub> (x = 0) fit to cubic spinel structure with space group <italic toggle=\"yes\">Fd-</italic>3<italic toggle=\"yes\">m</italic> with some Li<sub>x</sub>Ni<sub>1-x</sub>O detected as impurities. The addition of Y with x = 0.05 and 0.1 resulted in the change of LiNi<sub>0.5</sub>Mn<sub>1.5−<italic toggle=\"yes\">x</italic>\u0000</sub>Y<sub>\u0000<italic toggle=\"yes\">x</italic>\u0000</sub>O<sub>4</sub> structure to space group <italic toggle=\"yes\">P4</italic>\u0000<sub>3</sub>32. The Y addition was confirmed to enter 4<italic toggle=\"yes\">b</italic> site co-existed with Mn and this result is closely related to the increase in lattice parameters <italic toggle=\"yes\">a</italic> from 8.1384(1) Å to 8.1496(5) Å and 8.1627(1) for x = 0, 0.05 and 0.1, respectively. The cubic unit volume of LiNi<sub>0.5</sub>Mn<sub>1.5−<italic toggle=\"yes\">x</italic>\u0000</sub>Y<sub>\u0000<italic toggle=\"yes\">x</italic>\u0000</sub>O<sub>4</sub> also increased with increasing Y addition. The addition of Y is liable to the formation of more stable [Mn,Y]O<sub>6</sub> and MnO<sub>6</sub> octahedra and whole crystal structure. The result from charge/discharge analysis shows that the addition of Y resulted in decreasing discharge capacity from 123.56 mAh g<sup>−1</sup> to 105.175 mAh g<sup>−1</sup> and 104.369 for x = 0.05 and 0.1, respectively. However, capacity retention after the 25th cycle increased constantly from 77% to 88% and 92% with increasing Y addition. Doped Y, in general, improves the electrochemical performance of LiNi<sub>0.5</sub>Mn<sub>1.5−<italic toggle=\"yes\">x</italic>\u0000</sub>Y<sub>\u0000<italic toggle=\"yes\">x</italic>\u0000</sub>O<sub>4</sub> as cathode material for LIBs.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210518","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 synthesis of mesoporous zinc oxide nanoparticle as a drug delivery system evaluated by IVIVE in PBPK modeling 用 IVIVE 在 PBPK 模型中评估作为给药系统的介孔氧化锌纳米粒子的简便合成方法
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-22 DOI: 10.1088/2043-6262/ad6cc3
Koushi Kumar, Nirmala Nithya Raju, Abdul Azeez Nazeer
{"title":"Facile synthesis of mesoporous zinc oxide nanoparticle as a drug delivery system evaluated by IVIVE in PBPK modeling","authors":"Koushi Kumar, Nirmala Nithya Raju, Abdul Azeez Nazeer","doi":"10.1088/2043-6262/ad6cc3","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6cc3","url":null,"abstract":"This study focuses on the development of mesoporous zinc oxide nanoparticles (mZNPs) via the sol–gel technique, utilizing polyethylene glycol-6000 (PEG-6000) as a capping agent. The research aims to investigate the suitability of these nanoparticles for drug delivery purposes. The analysis of the synthesized material validates the existence of a hexagonal system of zinc oxide with space group <italic toggle=\"yes\">P6</italic>\u0000<sub>3</sub>cm and HRTM confirmed the crystallinity and morphology of the nanoparticles ranging from 15–20 nm, revealing the formation of pores attributed to the presence of PEG-6000. The mZNPs exhibit a BET surface area of 28.3 m<sup>2</sup>. g<sup>−1</sup>, with Langmuir surface area measurements indicating 46 m<sup>2</sup>. g<sup>−1</sup>. Analysis employing the BJH method outlines pore diameters ranging from approximately 2–5 nm at a relative pressure of around 0.99. Furthermore, these mZNPs demonstrated drug delivery attributes, with 43.3% loading efficiency and 80.33% entrapment efficiency for aspirin. Notably, the release kinetics of aspirin from the mZNPs were investigated in simulated fluids of varying pH, with the highest release (98.1%) observed in simulated intestinal fluid (pH 6.8). The formulation exhibits typical time-dependent release kinetics under mild pH conditions (7.4 and 6.8), while transitioning to erosion-controlled diffusion mechanisms in acidic pH conditions (1.2). Furthermore, mathematical models, including Higuchi’s, Korsmeyer’s, and Weibull’s, were employed to assess release kinetics, offering parameters for <italic toggle=\"yes\">in-vitro</italic> to <italic toggle=\"yes\">in-vivo</italic> pharmacokinetic predictions. In the framework of PBPK modeling, renal clearance was computationally simulated at a rate of 45 min<sup>−1</sup>, whereas biliary clearance was modeled to occur at 0.05 min<sup>−1</sup>. Utilizing these model-derived parameters, the projected half-life of aspirin administered via mZNPs was determined to be 3.1 h. The potential applications of these findings extend to the development of effective drug delivery systems, warranting consideration for future animal model studies involving aspirin and mZNPs.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210517","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
Selective and reversible carbon mono oxide gas detection using silver doped octahedral molecular sieves (OMS-2) nanorods 使用掺银八面体分子筛 (OMS-2) 纳米棒进行选择性和可逆的一氧化碳气体检测
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-22 DOI: 10.1088/2043-6262/ad6cc4
Amit Kumar Gupta, Priyanshu Singh, Monical Jaiswal, Jagjiwan Mittal, Sivanandam Aravindan, Sumit Chaudhary, Satinder Kumar Sharma, Robin Kumar
{"title":"Selective and reversible carbon mono oxide gas detection using silver doped octahedral molecular sieves (OMS-2) nanorods","authors":"Amit Kumar Gupta, Priyanshu Singh, Monical Jaiswal, Jagjiwan Mittal, Sivanandam Aravindan, Sumit Chaudhary, Satinder Kumar Sharma, Robin Kumar","doi":"10.1088/2043-6262/ad6cc4","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6cc4","url":null,"abstract":"In this work a potable, resistive sensor is fabricated for the selective detection of CO gas using nanorods of Ag doped octahedral molecular sieves-2 (Ag-OMS-2). During exposure to carbon monoxide (CO) gas at room temperature, resistance of Ag-OMS-2 film was dropped from 557 kΩ to 352 kΩ in just 18 sec. However, exposed sample regained its initial resistance value in 25 sec when CO gas source was removed. Both sensing and recovery processes were carried out at room temperature. The sensor film showed excellent reproducibility during several cycles of CO gas exposure. Swift activation of oxygen molecules for the oxidation of CO by the silver present in the tunnel of manganese oxide network is supposed to be responsible for sensing activity of Ag-OMS-2 towards carbon monoxide gas.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210519","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
Fabrication of porous carbon nanofibers by electrospinning as free-standing anodes for lithium-ion batteries 通过电纺丝制造多孔碳纳米纤维,作为锂离子电池的独立阳极
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-21 DOI: 10.1088/2043-6262/ad6cc2
Dang Manh Le, Tuan Loi Nguyen, Minh Thu Nguyen, Van Man Tran, Hoai Phuong Pham, Hai Dang Ngo, Thuy Thi Thu Nguyen, Trung Hieu Bui
{"title":"Fabrication of porous carbon nanofibers by electrospinning as free-standing anodes for lithium-ion batteries","authors":"Dang Manh Le, Tuan Loi Nguyen, Minh Thu Nguyen, Van Man Tran, Hoai Phuong Pham, Hai Dang Ngo, Thuy Thi Thu Nguyen, Trung Hieu Bui","doi":"10.1088/2043-6262/ad6cc2","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6cc2","url":null,"abstract":"Free-standing anodes composed of porous carbon nanofibers (PCNFs) were fabricated by electrospinning for use in lithium-ion batteries. The use of terephthalic acid (PTA) as the sublimating agent, one-step carbonization at 900 °C for 2 h under vacuum converts the as-prepared samples to have interconnected pores along the PCNFs interior with numerous surface openings. The electrode was characterized using scanning electron microscopy (SEM), surface area analysis (BET), x-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), and Raman spectra (Raman). This strategy makes the PCNFs with a specific surface area of up to 290 m<sup>2</sup> g<sup>−1</sup>, which is significantly higher than the CNFs with 107 m<sup>2</sup> g<sup>−1</sup>. As a result, electrochemical tests exhibited that the PCNFs have a high discharge capacity of 750 mAh g<sup>−1</sup>, which is sharply higher than that of the CNFs (234 mAh g<sup>−1</sup>) at 100 mA g<sup>−1</sup>. Even at a current density of 3000 mA g<sup>−1</sup>, the PCNFs still exhibit a very high discharge capacity of 621 mAh g<sup>−1</sup>. The present study may provide an effective strategy for synthesizing low-cost, binder-free, and environmentally friendly anodes for lithium-ion batteries with outstanding properties.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210520","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
Excellent NO2 sensor based on porous Pd-ZnO nanorods prepared by a facile hydrothermal method 基于便捷水热法制备的多孔 Pd-ZnO 纳米棒的卓越二氧化氮传感器
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-16 DOI: 10.1088/2043-6262/ad6b7a
Hoang Minh Luu, Thi Thuy Thu Pham, Van Duy Nguyen, Van Tong Pham
{"title":"Excellent NO2 sensor based on porous Pd-ZnO nanorods prepared by a facile hydrothermal method","authors":"Hoang Minh Luu, Thi Thuy Thu Pham, Van Duy Nguyen, Van Tong Pham","doi":"10.1088/2043-6262/ad6b7a","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6b7a","url":null,"abstract":"Noble metal nanoparticles (NPs) decorated on the surface of semiconducting metal oxides to enhance the gas-sensitive properties of sensing materials have attracted considerable interest from numerous researchers worldwide. Here, we introduce an effective method to decorate Pd NPs on the surface of porous ZnO nanorods to improve NO<sub>2</sub> gas-sensing performance. Porous ZnO nanorods were synthesized using a simple hydrothermal method without surfactant. Surface decoration of porous ZnO nanorods with Pd NPs was performed through <italic toggle=\"yes\">in situ</italic> reduction of PdCl<sub>2</sub> using Pluronic as the reducing agent. The gas-sensing properties of porous Pd-ZnO nanorods were evaluated toward NO<sub>2</sub> toxic gas in a concentration range of 0.1–2 ppm at various operating temperatures of 25 °C–250 °C. Pd NPs decorated on the surface of porous ZnO nanorods not only improve the sensor response (3-folds) and reproducibility but also reduce the optimal operating temperature. The improvement in gas-sensing activity is attributed to the modulation of the depletion layer via oxygen adsorption and the formation of the Schottky potential barrier between Pd and ZnO through chemical and electronic mechanisms.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210521","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
Multiferroic properties of NiFe2O4-Ba0.7Ca0.3TiO3 nanocomposites NiFe2O4-Ba0.7Ca0.3TiO3 纳米复合材料的多铁特性
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-16 DOI: 10.1088/2043-6262/ad6b7c
Tran Thi Ha Giang, Nguyen Thi Viet Chinh, Dao Son Lam, Dinh Chi Linh, Pham Hong Nam, Ta Ngoc Bach, Nguyen The Long, Do Hung Manh, Dang Duc Dung, Huynh Ngoc Toan, N N Poddubnaya, Tran Dang Thanh
{"title":"Multiferroic properties of NiFe2O4-Ba0.7Ca0.3TiO3 nanocomposites","authors":"Tran Thi Ha Giang, Nguyen Thi Viet Chinh, Dao Son Lam, Dinh Chi Linh, Pham Hong Nam, Ta Ngoc Bach, Nguyen The Long, Do Hung Manh, Dang Duc Dung, Huynh Ngoc Toan, N N Poddubnaya, Tran Dang Thanh","doi":"10.1088/2043-6262/ad6b7c","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6b7c","url":null,"abstract":"In this report, we present results on the multiferroic properties of four nanocomposite samples of NiFe<sub>2</sub>O<sub>4</sub>-Ba<sub>0.7</sub>Ca<sub>0.3</sub>TiO<sub>3</sub> (NFO/BCTO), which were fabricated through combinations of high-energy ball milling, heat treatment, and spark plasma sintering techniques. Structural analyses revealed that these samples simultaneously contain two phases of nano-sized NiFe<sub>2</sub>O<sub>4</sub> (NFO) and Ba<sub>0.7</sub>Ca<sub>0.3</sub>TiO<sub>3</sub> (BCTO) crystals. The addition of NFO into the BCTO-host did not alter the crystal structure but significantly improved the multiferroic characteristics compared to pure BCTO. Furthermore, variations in saturation magnetization (<italic toggle=\"yes\">M</italic>\u0000<sub>s</sub>) and coercivity (<italic toggle=\"yes\">H</italic>\u0000<sub>c</sub>) were investigated as a function of temperature. The results showed that Ms increased gradually with the concentration of NFO. In terms of temperature dependence, <italic toggle=\"yes\">M</italic>\u0000<sub>s</sub>(<italic toggle=\"yes\">T</italic>) data deviated from the Bloch’s law with an exponent coefficient <italic toggle=\"yes\">α</italic> changing in the range of 1.8–1.9, decreasing gradually as the NFO concentration increased. Meanwhile, <italic toggle=\"yes\">H</italic>\u0000<sub>c</sub> decreased gradually as the NFO concentration increased and followed the Kneller’s law in terms of temperature dependence.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210534","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
Antimicrobial activity of apricot kernel extract loaded carboxymethyl chitosan nanoparticles against multidrug resistant wound-skin infection bacteria 杏核提取物负载的羧甲基壳聚糖纳米颗粒对耐多药伤口皮肤感染细菌的抗菌活性
IF 2.1
Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2024-08-16 DOI: 10.1088/2043-6262/ad6c0b
A S El-Houssiny, E A Fouad
{"title":"Antimicrobial activity of apricot kernel extract loaded carboxymethyl chitosan nanoparticles against multidrug resistant wound-skin infection bacteria","authors":"A S El-Houssiny, E A Fouad","doi":"10.1088/2043-6262/ad6c0b","DOIUrl":"https://doi.org/10.1088/2043-6262/ad6c0b","url":null,"abstract":"In recent years, skin and soft-tissue infections, particularly due to multidrug resistance bacteria (MDR) are generating a serious health crisis to human health. Thus, the current investigation tried to find new promising alternatives such as herbal therapy and biopolymer nanotechnology to combat MDR microbes. Apricot kernels extract was prepared and its amygdalin content was determined by HPLC analysis. Carboxymethyl chitosan nanoparticles (CMC NPs) encapsulated with amygdalin extract (Am ext) were synthesized and characterized through their morphology, particle size, zeta potential and thermal analysis. The antibacterial activity of Am ext, CMC NPs and CMC-Am ext NPs were evaluated against MDR bacteria. Moreover, to confirm the antibacterial action of the samples, bacterial DNA fragmentation analysis was performed. Furthermore, the cyanide ions released from bacterial breakdown of amygdalin was confirmed using Nanocolor Cyanide 08 Test 0–31 kits. The HPLC analysis indicated that amygdalin extracted efficiently from the apricot kernels. The CMC-Am ext NPs exhibited spherical shaped and mono dispersed particles of size 28 nm; physical stability and thermal compatibility. Additionally, CMC-Am ext NPs have significant antibacterial action on all MDR microbes in synergy with Am ext. Moreover, the results confirmed that the cyanide ions were released from amygdalin breakdown by the action of bacteria. Furthermore, the DNA fragmentation analysis confirmed that both Am ext and its nano-encapsulated form caused bacterial cell death by inducing DNA damage. Therefore, these findings demonstrate CMC-Am ext NPs as a novel potential therapeutic agent which can be used as an alternative to the current antibiotics against MDR bacteria.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210535","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信