Journal of Nanotechnology最新文献_第2页

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

The Role of Annealing Treatment on Crystallographic, Optical, and Electrical Features of Bi2O3 Thin Films Prepared Using Reactive Plasma Sputtering Technology 退火处理对反应等离子溅射技术制备的Bi2O3薄膜的晶体学、光学和电学特性的影响

IF 4.2

Journal of Nanotechnology Pub Date : 2023-06-09 DOI: 10.1155/2023/8638512

S. J. Beden, Hassan A. Dumboos, M. K. Ismael, Mohanad Kadhim Mejbel

{"title":"The Role of Annealing Treatment on Crystallographic, Optical, and Electrical Features of Bi2O3 Thin Films Prepared Using Reactive Plasma Sputtering Technology","authors":"S. J. Beden, Hassan A. Dumboos, M. K. Ismael, Mohanad Kadhim Mejbel","doi":"10.1155/2023/8638512","DOIUrl":"https://doi.org/10.1155/2023/8638512","url":null,"abstract":"Bismuth oxide (Bi2O3) has attracted considerable research interest in test thin films made utilizing the reactive plasma sputtering (RPS) technology-assisted annealing treatment, allowing the development of diverse BixOx thin films. SEM, phase X-ray diffraction patterns, UV-Vis spectrometers, and D.C. two-probes are used to identify the crystallographic structure and assess the films’ optical-electrical properties. The XRD examination showed that forming Bi2O3 films with an amorphous to multiphase crystalline structure for sputtering time of 40 min was due to soda glass substrate temperature at a range of 30–35°C. Thin films of Bi2O3 crystal structures improved with annealing heat treatment at 200, 300, 400, and 500°C. Yet the formation of crystalline phase (β-Bi2O3 with δ-Bi2O3) Bi2O3 nanostructures occurred at higher temperatures. SEM images showed transparent particles highly affected by annealing temperatures. The nanostructures were about 102–510 nm long, and the diameter was 50–100 nm. The Bi2O3 film optical band gaps and nanostructures ranged from 2.75 to 3.05 eV. The annealing temperature differences affected the crystallite sizes, optical band gaps, and surface roughness. The findings showed that these differences caused the phase transition in Bi2O3 structures. The electrical calculation revealed that the electrical conductivity improved with annealing temperatures of 150–250°C while declining with temperature (300–500)°C with typical semiconductor films.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"299 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78330003","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

Thermodynamics of Silicon Nanowire Growth under Unintended Oxidation of Catalytic Particles 催化颗粒意外氧化下硅纳米线生长的热力学

IF 4.2

Journal of Nanotechnology Pub Date : 2023-05-20 DOI: 10.1155/2023/3485793

Valeriy A. Nebol’sin, E. Levchenko, V. Yuryev, N. Swaikat

引用次数: 0

Dexamethasone-Loaded Pseudo-Protein Nanoparticles for Ocular Drug Delivery: Evaluation of Drug Encapsulation Efficiency and Drug Release 含地塞米松的假蛋白质纳米颗粒眼部给药:药物包封效率和药物释放的评价

IF 4.2

Journal of Nanotechnology Pub Date : 2023-05-08 DOI: 10.1155/2023/8827248

T. Kantaria, Tengiz Kantaria, P. Heiduschka, N. Eter, D. Tugushi, R. Katsarava

{"title":"Dexamethasone-Loaded Pseudo-Protein Nanoparticles for Ocular Drug Delivery: Evaluation of Drug Encapsulation Efficiency and Drug Release","authors":"T. Kantaria, Tengiz Kantaria, P. Heiduschka, N. Eter, D. Tugushi, R. Katsarava","doi":"10.1155/2023/8827248","DOIUrl":"https://doi.org/10.1155/2023/8827248","url":null,"abstract":"Ophthalmic drug delivery for treating various eye diseases still remains a challenge in ophthalmology. One perspective way of overcoming this problem is to use nanoscale biodegradable drug carriers that are able to safely deliver pharmaceuticals directly to the locus of disease and maintain a therapeutic concentration of drug for a long time. The goal of the present study was the preparation of drug- (dexamethasone-, DEX-) loaded pseudo-protein nanoparticles (NPs) and investigation of drug encapsulation efficiency and drug release kinetics. DEX-loaded pseudo-protein NPs (DEX-NPs) were successfully prepared by the nanoprecipitation method. DEX-NPs were characterized by size (average diameter, AD), size distribution (polydispersity index, PDI), and surface charge (zeta-potential, ZP) using the dynamic light scattering technique. DEX encapsulation characteristics were determined using the UV-spectrophotometric method, and kinetics of DEX release from DEX-NPs was studied according to the dialysis method in PBS at 37°C. The obtained results showed that size of DEX-NPs varies within 143.6–164.1 nm depending on DEX content during the preparation. DEX incorporation characteristics were determined—encapsulation efficiency (EE) and actual drug loading (DL) were high enough and reached 55.1 and 10.2%, respectively. The kinetics of DEX release from DEX-NPs showed a typical biphasic release pattern—an initial rapid (burst) release and further much more continuous slow release. Based on the obtained data, we can conclude that the elaborated DEX-NPs have potential for the application in ophthalmology as ocular drug delivery nanocarriers.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"132 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89728091","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: 1

Study on the Cotton Fabrics with Photoinduced Reversibly Switchable Wettability 光致可逆可调润湿性棉织物的研究

IF 4.2

Journal of Nanotechnology Pub Date : 2023-04-27 DOI: 10.1155/2023/8422293

Caining Zhang, Xuman Wang

引用次数: 0

Facile Synthesis and Application of Ag-NPs for Controlling Antibiotic-ResistantPseudomonas spp. and Bacillus spp. in a Poultry Farm Environment Ag-NPs在家禽养殖环境中控制耐药假单胞菌和芽孢杆菌的简易合成及应用

IF 4.2

Journal of Nanotechnology Pub Date : 2023-04-20 DOI: 10.1155/2023/6260066

Aminur Rahman, H. Rasid, Md. Isahak Ali, Nymul Yeachin, M. Alam, K. S. Hossain, M. A. Kafi

{"title":"Facile Synthesis and Application of Ag-NPs for Controlling Antibiotic-ResistantPseudomonas spp. and Bacillus spp. in a Poultry Farm Environment","authors":"Aminur Rahman, H. Rasid, Md. Isahak Ali, Nymul Yeachin, M. Alam, K. S. Hossain, M. A. Kafi","doi":"10.1155/2023/6260066","DOIUrl":"https://doi.org/10.1155/2023/6260066","url":null,"abstract":"This study synthesized silver nanoparticles (Ag-NPs) using silver nitrate (AgNO3) as the ion source and sodium tripolyphosphate (STPP) as reducing as well as capping agents. The synthesized Ag-NPs were confirmed initially using Ag-NPs specific λmax at 410 nm with UV-Vis spectrophotometry and homogenously distributed, 100–300 nm size, and round-shaped particles were realized through atomic force microscopy (AFM) and transmission electron microscopy (TEM) image analysis. The various reaction condition-based studies revealed 0.01 M AgNO3 yields maximum particle after 4 h reduction with 1% STPP. Bacillus spp. (n = 23/90) and Pseudomonas spp. (n = 26/90) were isolated from three different poultry farms for evaluating the antibacterial activity of Ag-NPs. Among the PCR confirmed isolates, 52% (12/23) Bacillus spp. were resistant to ten antibiotics and 65% (17/26) Pseudomonas spp. were resistant to eleven antibiotics. The representative resistant isolates were subjected to antibacterial evaluation of synthesized Ag-NPs following the well diffusion method, revealing the maximum sensitive zone of inhibition 19 ± 0.2 mm against Bacillus spp. and 17 ± 0.38 mm against Pseudomonas spp. The minimum inhibitory concentration (MIC) and minimum bacterial concentration (MBC) of Ag-NPs were 2.1 μg/ml and 8.4 μg/ml, respectively, for broad-spectrum application. Finally, the biocompatibility was determined by observing the viability of Ag-NP-treated BHK-21 cell through trypan blue-based exclusion assay revealing nonsignificant decreased of cell viability ≤2MIC doses. Thus, the synthesized Ag-NPs were proven as biocompatible and sensitive to both Gram-positive and Gram-negative bacteria of the poultry farm environmental samples.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"16 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83395901","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: 2

Size and Morphology-Mediated Antiproliferative Activity of Hydroxyapatite Nanoparticles in Human Breast Cancer Cells 大小和形态介导的羟基磷灰石纳米颗粒在人乳腺癌细胞中的抗增殖活性

IF 4.2

Journal of Nanotechnology Pub Date : 2023-04-18 DOI: 10.1155/2023/5381158

Moeko Fukada, T. Chhetri, Agasthya Suresh, Anandhi Upendran, Z. Afrasiabi

引用次数: 0

Synthesis and Properties of Magnetic-Luminescent Fe3O4@ZnO/C Nanocomposites 磁致发光Fe3O4@ZnO/C纳米复合材料的合成与性能

IF 4.2

Journal of Nanotechnology Pub Date : 2023-04-08 DOI: 10.1155/2023/2381623

Astuti, S. Arief, Muldarisnur, Zulhadjri, R. A. Usna

{"title":"Synthesis and Properties of Magnetic-Luminescent Fe3O4@ZnO/C Nanocomposites","authors":"Astuti, S. Arief, Muldarisnur, Zulhadjri, R. A. Usna","doi":"10.1155/2023/2381623","DOIUrl":"https://doi.org/10.1155/2023/2381623","url":null,"abstract":"A Fe3O4@ZnO/C nanocomposite with a core-shell structure was synthesized using the co-precipitation method. To prevent the aggregation of the Fe3O4 magnetic particles, polyethylene glycol (PEG) was added. The X-ray diffractometer (XRD) results confirmed the formation of Fe3O4 and ZnO phases, with Fe3O4 having a cubic crystal system and ZnO having a hexagonal crystal system. Carbon in Fe3O4@ZnO/C had no effect on the crystal structure of Fe3O4@ZnO. Images from transmission electron microscopy (TEM) and scanning electron microscopy (SEM) revealed that the nanocomposite formed a core-shell structure. The Fourier transform infrared (FTIR) spectra verified the presence of bonds among ZnO, Fe3O4, and carbon. The appearance of the stretching vibration of the C≡C bond on the Fe3O4@ZnO/C sample revealed the nanocomposites’ carbon coupling. Photoluminescence (PL) spectroscopy was used to characterize the optical properties of the nanocomposites. Based on the results of the PL, the sample absorption of visible light was in the wavelength range of 400–700 nm. The photoluminescence of Fe3O4@ZnO differed from that of the Fe3O4@ZnO/C, especially in the deep-level emission (DLE) band. There was a phenomenon of broadening and shift of the band at a shorter wavelength, namely, in the blue wavelength region. Magnetic properties were characterized by vibrating-sample magnetometry (VSM). Based on the VSM results, the sample coupled with carbon exhibited a decrease in magnetic saturation. The presence of carbon changed photon energy into thermal energy. So, this material, apart from being a bioimaging material, can also be developed as a photothermal therapy material.","PeriodicalId":16378,"journal":{"name":"Journal of Nanotechnology","volume":"1 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88852837","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: 1