Journal of Nanotechnology最新文献

Controlling rate of release of tsetse fly repellent blend by encapsulating in β-cyclodextrin nanoparticles. 用β-环糊精纳米颗粒包封防采采蝇共混物，控制其释放率。

IF 4.1

Journal of Nanotechnology Pub Date : 2025-01-01 Epub Date: 2025-03-24 DOI: 10.1155/jnt/6677970

Bernadatte M Ratemo, Benson M Wachira, Eric Masika, Margaret M Ng'ang'a, Ahmed Hassanali, Paul O Mireji

{"title":"Controlling rate of release of tsetse fly repellent blend by encapsulating in β-cyclodextrin nanoparticles.","authors":"Bernadatte M Ratemo, Benson M Wachira, Eric Masika, Margaret M Ng'ang'a, Ahmed Hassanali, Paul O Mireji","doi":"10.1155/jnt/6677970","DOIUrl":"https://doi.org/10.1155/jnt/6677970","url":null,"abstract":"Tsetse flies are major vectors of African trypanosomiasis, with devastating medical and veterinary consequences in sub-Saharan region of Africa. Insect repellents are promising tool for control of tsetse flies in the region. A four-component tsetse-repellent blend (δ-nonalactone, heptanoic acid, 4-methylguaiacol and geranyl acetone) previously formulated and optimized was encapsulated in β-cyclodextrin for a slow controlled release. Here, we explored various methods of microencapsulating (kneading, co-precipitation, heating or freeze-drying) tsetse fly repellent blend in β-cyclodextrin nanoparticles. We assessed release kinetics of the blends and individual compounds using Gas Chromatography linked with Flame Ionization Detector, and evaluated laboratory and field responses (repellence) of the flies by the encapsulated blends. We compared individual performances of releases kinetics of the encapsulated blend relative to non-encapsulated composites. Overall, kneading, co-precipitation, heating and freeze-drying micro-encapsulation techniques retained 72.0, 61.0, 59.5 and 57.3 % of the blend, respectively. Release rates of blends in 400- and 200-microns thick polythene sachets were 6.73 and 11.82 mg/h respectively, significantly (p<0.05) higher than that of the kneaded encapsulated blend (5.35mg/h). Laboratory and field responses of tsetse flies to the unencapsulated native (sachet) and kneaded encapsulated odor blends confirmed our laboratory findings. Micro-encapsulation technology of repellent odors can be used for controlled release of active molecules in order to give an extended protection period, potentially reducing operational cost in programs for control of tsetse flies and related insect vectors.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"2025 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12366840/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144957528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boosting LiMn2O4 Diffusion Coefficients and Stability via Fe/Mg Doping and MWCNT Synergistically Modulating Microstructure 通过掺杂铁/镁和 MWCNT 协同调节微结构提高锰酸锂扩散系数和稳定性

IF 4.2

Journal of Nanotechnology Pub Date : 2024-01-05 DOI: 10.1155/2024/7020995

Natasha Ross, S. Willenberg, Thando Juqu, E. Carleschi, Bryan P. Doyle

{"title":"Boosting LiMn2O4 Diffusion Coefficients and Stability via Fe/Mg Doping and MWCNT Synergistically Modulating Microstructure","authors":"Natasha Ross, S. Willenberg, Thando Juqu, E. Carleschi, Bryan P. Doyle","doi":"10.1155/2024/7020995","DOIUrl":"https://doi.org/10.1155/2024/7020995","url":null,"abstract":"The dissolution of manganese and its deposition on the anode surface cause poor cycling stability in lithium-ion batteries. To alleviate these issues, this study probes the electrochemical activity of highly crystalline and cation-adjusted lithium manganese oxide (LMO) carbon spinel composite obtained via a modified sol-gel synthesis procedure. The pristine LMO cathode was functionalized with a Fe and Mg alloy and fused with purified multiwalled carbon nanotubes (MWCNTs) to form a catalytically stabilized LiMn1.98Fe0.01Mg0.01O4/MWCNT (LMO-FeMg/MWCNT) framework. High-resolution SEM analysis showed well-dispersed particles in the nanometer size range. The electrochemical characteristics of the novel composite materials yielded favourable electrochemical results with diffusion coefficients of 1.91 × 10−9 cm2·s−1 and 5.83 × 10−10 cm2·s−1 for LMO-FeMg and LMO-FeMg/MWCNT, respectively. This improvement was supported by impedance studies which showed a considerable Rct reduction of 0.27 Ω and 0.71 Ω. The cation stabilized system outperformed the pristine LMO material with specific capacities around 145 mAh·g−1, due to an enhancement in electrochemical activity and structural stability.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"51 6","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139381628","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

Phytosynthesized Nanoparticles as Novel Antifungal Agent for Sustainable Agriculture: A Mechanistic Approach, Current Advances, and Future Directions 植物合成纳米粒子作为可持续农业的新型抗真菌剂：机理方法、当前进展和未来方向

IF 4.2

Journal of Nanotechnology Pub Date : 2023-12-29 DOI: 10.1155/2023/8011189

Javeria Parveen, Tahira Sultana, Abeer Kazmi, Khafsa Malik, Abd Ullah, Amir Ali, Bushra Qayyum, N. Raja, Z. Mashwani, Saif Ur Rehman

{"title":"Phytosynthesized Nanoparticles as Novel Antifungal Agent for Sustainable Agriculture: A Mechanistic Approach, Current Advances, and Future Directions","authors":"Javeria Parveen, Tahira Sultana, Abeer Kazmi, Khafsa Malik, Abd Ullah, Amir Ali, Bushra Qayyum, N. Raja, Z. Mashwani, Saif Ur Rehman","doi":"10.1155/2023/8011189","DOIUrl":"https://doi.org/10.1155/2023/8011189","url":null,"abstract":"Due to rapidly changing environmental conditions, virulent pathogens have arisen continuously that invades the crops and badly affects their yield and quality of the cash crops which results in economic losses. To overcome the prevalent infection of fungal pathogens, there is an utmost need to develop alternative techniques that avoid conventional agriculture practices. The use of various chemical fungicides is not an environmentally sustainable solution to fungal diseases because it produces environmental contamination and is dangerous for human health. Nanotechnology provides solutions to disease control issues in a significant way. The scientific and industrial systems are being changed by this development. Similarly, nano-based instruments are highly promising in the agriculture sector, particularly for the production of powerful formulations that require appropriate distribution of agrochemicals, nutrients, pesticides/insecticides, and even growth regulators for improved efficiency of use. Nanotechnology provides an inexpensive, environmentally friendly, and alternative effective monitoring of agricultural fungal pathogens. Green nanotechnology is an innovative methodology that revolutionized the field of agriculture to solve these problems. Despite increasing plant growth, nanoparticles meet the agriculture demand for high yield. This study mainly focuses on the promise of various methods for the treatment of fungal diseases through nanoparticles.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":" 48","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139142731","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

Unlocking the Potential of NiSO4·6H2O/NaOCl/NaOH Catalytic System: Insights into Nickel Peroxide as an Intermediate for Benzonitrile Synthesis in Water 挖掘 NiSO4-6H2O/NaOCl/NaOH 催化体系的潜力：过氧化镍作为水中合成苯腈的中间体的启示

IF 4.2

Journal of Nanotechnology Pub Date : 2023-11-18 DOI: 10.1155/2023/9940845

Abdel Ghany F. Shoair, A. S. Almalki, M. M. Shanab, Ahmed M. Sheta, Amir El-Basiony, Nasser A. El-Ghamaz, Hany A. Nasef, Hussein A. Khalaf

引用次数: 0

Nanostructured Lipid Carriers for Improved Delivery of Therapeutics via the Oral Route 纳米结构脂质载体改善口服给药途径

Journal of Nanotechnology Pub Date : 2023-11-06 DOI: 10.1155/2023/4687959

Alok Kumar Mahor, Prem Prakash Singh, Rishikesh Gupta, Peeyush Bhardwaj, Priyanka Rathore, Ankita Kishore, Rohit Goyal, Neeraj Sharma, Jyoti Verma, Jessica M. Rosenholm, Kuldeep K. Bansal

{"title":"Nanostructured Lipid Carriers for Improved Delivery of Therapeutics via the Oral Route","authors":"Alok Kumar Mahor, Prem Prakash Singh, Rishikesh Gupta, Peeyush Bhardwaj, Priyanka Rathore, Ankita Kishore, Rohit Goyal, Neeraj Sharma, Jyoti Verma, Jessica M. Rosenholm, Kuldeep K. Bansal","doi":"10.1155/2023/4687959","DOIUrl":"https://doi.org/10.1155/2023/4687959","url":null,"abstract":"Drug delivery via the oral route has always been challenging for poorly soluble drugs. Acid-induced hydrolysis, enzymatic degradation, and poor mucosal absorbency remain the primary hiccups for effective oral delivery of medications. With the advent of nanotechnology, nanostructured lipid carriers (NLCs) have emerged as a promising delivery carrier that can circumvent gastrointestinal tract (GIT) barriers hindering the solubility and bioavailability of such drugs. These NLCs can efficiently transport drug moieties across intestinal membranes shielding medications from intestinal pH and enzymatic degradation. Because they are composed of lipidic materials, they can be easily absorbed or taken up by various pathways such as transcellular absorption, paracellular transport, and M-cell uptake. Such mechanisms not only improve the absorption and solubility of drugs but also augment bioavailability and residence time and may bypass first-pass metabolism. This review explores the diverse applications of nanostructured lipid carriers (NLCs) in oral drug delivery for various medical conditions, shedding light on their current regulatory status, including FDA-approved options and those in pre/clinical stages. The review also features patented NLC formulations. It provides valuable insights into how NLCs can be harnessed for effective oral drug delivery and outlines recent advancements in optimizing their performance to tackle gastrointestinal barriers, thus opening new possibilities for NLCs in future pharmaceutical applications.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135679185","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

Angular Dependence of Magnetization Behavior in Ni81Fe19 Nanowires by Micromagnetic Simulations Ni81Fe19纳米线磁化行为角依赖性的微磁模拟

Journal of Nanotechnology Pub Date : 2023-10-16 DOI: 10.1155/2023/3152014

Musaab Salman Sultan

{"title":"Angular Dependence of Magnetization Behavior in Ni81Fe19 Nanowires by Micromagnetic Simulations","authors":"Musaab Salman Sultan","doi":"10.1155/2023/3152014","DOIUrl":"https://doi.org/10.1155/2023/3152014","url":null,"abstract":"Nickel (Ni)-iron (Fe) alloy in the form of Ni81Fe19 (permalloy) is a widely used material in technological soft magnetic applications. Understanding the magnetization behavior in detail in such materials is substantial from both a scientific point of view and industrial demands. Therefore, the main purpose of the present article is to discuss the angular dependence of magnetization in Ni81Fe19 nanowires by micromagnetic simulation using the object-oriented micromagnetic framework (OOMMF) platform. These investigations have been implemented on different widths/thicknesses (T) up to 150 nm with an identical stretch of 1 µm. There was a reduction in the remanent magnetization by increasing the wire angle with respect to the magnetic field applied, which displayed excellent agreement with calculations performed theoretically. This was designated for the effect of shape anisotropy on behavior. The angular dependence of the switching behavior was analyzed and compared theoretically with the classical domain wall reversal models. The magnetic reversal for wires ≤30 nm was well defined by the uniform rotation of the Stoner–Wohlfarth model, whereas for nanostructures ≥50 nm was analyzed by the nonuniform rotation of the curling model. The critical thickness for the transition between these models was theoretically calculated and found to be around 30 ± 5 nm, which is in good agreement with the other findings presented in the literature using other materials of ferromagnetic wires. The micromagnetic spin structure was obtained instantaneously before and after switching events for relatively thick (150 nm) nanostructures at different angles, suggesting that the reversal is not as simple as predicted by the domain wall reversal of nonuniform rotation of the curling model.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"913 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136079561","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

Dual-Wavelength Passively Q-Switched Erbium-Doped Fiber Laser Incorporating Calcium Carbonate Nanoparticles as Saturable Absorber 以碳酸钙纳米颗粒为可饱和吸收剂的双波长被动调q掺铒光纤激光器

Journal of Nanotechnology Pub Date : 2023-09-28 DOI: 10.1155/2023/8858582

Iman N. Jasem, Hiba H. Abdullah, Mohammed Jalal Abdulrazzaq

引用次数: 0

Production of Lactobionic Acid Using Gold Nanoparticles Synthesized with Fruit Myrciaria dubia Extract 以桃金娘提取物合成金纳米颗粒制备乳酸

IF 4.2

Journal of Nanotechnology Pub Date : 2023-07-01 DOI: 10.1155/2023/5654802

Jeaneth M. Medina-Pérez, Melanie A. Zegarra-Zegarra, J. Villanueva-Salas, B. M. Salazar-Pinto, S. S. Flores-Calla, Angel G. Ramírez-Valverde, Hugo G. Jiménez-Pacheco, E. G. Gonzales-Condori

{"title":"Production of Lactobionic Acid Using Gold Nanoparticles Synthesized with Fruit Myrciaria dubia Extract","authors":"Jeaneth M. Medina-Pérez, Melanie A. Zegarra-Zegarra, J. Villanueva-Salas, B. M. Salazar-Pinto, S. S. Flores-Calla, Angel G. Ramírez-Valverde, Hugo G. Jiménez-Pacheco, E. G. Gonzales-Condori","doi":"10.1155/2023/5654802","DOIUrl":"https://doi.org/10.1155/2023/5654802","url":null,"abstract":"Lactobionic acid (LBA) is a polyhydroxy acid with attractive properties in the pharmaceutical, cosmetic, food, medical, and chemical industries, making it a versatile product with multiple applications, which supports the various studies aimed at its production by increasingly more simple, efficient, and environmentally friendly processes. For this reason, the purpose of this research was to synthesize gold nanoparticles (AuNPs) by a synthesis process using Myrciaria dubia (Camu camu) fruit extract. Subsequently, AuNPs were used to produce LBA from lactose. The results demonstrate that the Myrciaria dubia extract manages to synthesize AuNPs that were characterized by UV/vis spectrophotometry, energy-dispersive X-ray spectroscopy (EDX), and Zetasizer. LBA was quantified by FTIR-ATR spectroscopy and ion chromatography. The results showed that AuNPs succeeded in producing LBA from lactose showing the highest LBA production efficiency at a dose of 0.5 g/L and a temperature of 60°C. It has been shown that the AuNPs obtained by synthesis using the Myrciaria dubia extract efficiently catalyze the production of LBA from lactose, with a yield of 45.24%, which can be used to produce LBA for industrial or research purposes.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"8 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82742962","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

Synthesis of Green Cerium Oxide Nanoparticles Using Plant Waste from Colocasia esculenta for Seed Germination of Mung Bean (Vigna radiata) 利用绿豆植物废料合成绿色氧化铈纳米颗粒用于绿豆种子萌发

IF 4.2

Journal of Nanotechnology Pub Date : 2023-05-30 DOI: 10.1155/2023/9572025

Nor Monica Ahmad, Nor’ Aishah Hasan

{"title":"Synthesis of Green Cerium Oxide Nanoparticles Using Plant Waste from Colocasia esculenta for Seed Germination of Mung Bean (Vigna radiata)","authors":"Nor Monica Ahmad, Nor’ Aishah Hasan","doi":"10.1155/2023/9572025","DOIUrl":"https://doi.org/10.1155/2023/9572025","url":null,"abstract":"Synthesis of cerium oxide (CeO2) nanoparticles (NPs) via biological approach has received a lot of interest to reduce the harmful effects of chemical synthesis. In the present study, Colocasia esculenta leaf extract facilitated the preparation of CeO2-NPs by using the sol-gel technique. The crystal structural of CeO2-NPs was proven by X-ray powder diffraction (XRD) investigation to be cubic with size of 2.94 nm according to Debye–Scherrer equation. As demonstrated in the transmission electron microscopy (TEM) image, CeO2-NPs have a spherical form with an average size of 2.04 nm which is almost consistent with a finding from XRD analysis. Energy dispersive X-ray (EDX) measurements exhibited high-intensity peaks attributed to Ce and oxygen and further proved the creation of CeO2-NPs. The Fourier transform infrared spectroscopy (FTIR) analysis revealed the presence of Ce-O stretching, indicating the formation of CeO2-NPs. Functional groups of O-H, C-O, and C=O peaks were found in a spectrum due to the phytochemical components that were responsible for reducing and stabilizing during the synthesis process of CeO2-NPs. The examined UV-visible spectra exhibited the absorbance peak at 213 nm. The synthesized NPs produced in this study were further investigated for mung bean seed germination, whereby the influence of grain germination and growth rate demonstrated the significant finding.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"362 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78977187","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 Multilayers CdS Nanocrystalline Thin Films on the Performance of Dye-Sensitized Solar Cells 多层CdS纳米晶薄膜对染料敏化太阳能电池性能的影响

IF 4.2

Journal of Nanotechnology Pub Date : 2023-05-23 DOI: 10.1155/2023/7998917

A. A. Hussain, Haider Abdulelah, A. H. Amteghy, Raed A. Dheyab, Ban Hamdan AlMulla

引用次数: 1