Journal of Nanostructures最新文献_第4页

HRTEM study of ZnS Nanowires films deposited by thermal evaporation 热蒸发法制备ZnS纳米线薄膜的HRTEM研究

IF 1.4

Journal of Nanostructures Pub Date : 2020-10-01 DOI: 10.22052/JNS.2020.04.004

B. Abdallah, M. Kakhia, W. Zetoune

引用次数: 1

Grafting of Ag nanoparticles on SrMnO3: Effect of capping agent and alkaline agent on the morphology of SrMnO3 nanostructures for enhancing photocatalytic performance Ag纳米粒子在SrMnO3上的接枝：封端剂和碱性剂对SrMnO3纳米结构形貌的影响

IF 1.4

Journal of Nanostructures Pub Date : 2020-10-01 DOI: 10.22052/JNS.2020.04.016

M. A. Golsefidi, H. Khojasteh, C. Azimi, A. Abbasi

{"title":"Grafting of Ag nanoparticles on SrMnO3: Effect of capping agent and alkaline agent on the morphology of SrMnO3 nanostructures for enhancing photocatalytic performance","authors":"M. A. Golsefidi, H. Khojasteh, C. Azimi, A. Abbasi","doi":"10.22052/JNS.2020.04.016","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.016","url":null,"abstract":"In this work, SrMnO3 nanoparticles were successfully synthesized using dimethylglyoxime (DMG) and triethylenepantamine (TEPA) as capping agent and alkaline agent respectively. To achieve the desired sample with high homogeneity and the fine size, various parameters such as capping agent, alkaline agent and temperature of calcination were changed. SrMnO3 nanostructures with different morphologies such as unique sphere-like and hierarchical were successfully prepared. Then on the surface of the optimum sample, silver nanoparticles were doped. The as-synthesized nanostructures were characterized by thermal gravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), Fourier transform infrared (FT-IR) spectroscopy, energy dispersive X-ray microanalysis (EDX) and UV–Vis diffuse reflectance analysis (DRS). The photocatalytic degradation of the rhodamine B, methyl orange, murexide and methylene blue as water pollutants were investigated. According to the results, photocatalytic activity of SrMnO3/Ag nanostructures were better and degradation percent of rhodamine B as a cationic pollutant was more than the other dyes.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"825-837"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42705132","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

Hydrothermal synthesis of magnetic and photoluminescence CuFe2O4-carbon dots nanocomposite as a sensor for detecting of Hg(II) ions 水热合成磁性光致发光cufe2o4 -碳点纳米复合材料作为检测Hg(II)离子传感器

IF 1.4

Journal of Nanostructures Pub Date : 2020-10-01 DOI: 10.22052/JNS.2020.04.009

G. Nabiyouni, D. Ghanbari

{"title":"Hydrothermal synthesis of magnetic and photoluminescence CuFe2O4-carbon dots nanocomposite as a sensor for detecting of Hg(II) ions","authors":"G. Nabiyouni, D. Ghanbari","doi":"10.22052/JNS.2020.04.009","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.009","url":null,"abstract":"Hydrothermal synthesis of magnetic and photoluminescence CuFe2O4-carbon dots nanocomposite as a sensor for detecting of Hg(II) ionsCarbon quantum dots were prepared by using ethylene-diamine and citric acid materials. Micro-wave was applied for synthesis of copper ferrite, hydrothermal method was used as an effective method for preparation of product with preferential growth. Finally, CuFe2O4 and magnetic copper ferrite-carbon nanocomposite were synthesized. The effects of power and cycles on the morphology and particle size were investigated. Nanostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, ultra violet-visible (UV-Vis) absorption and photo-luminescence (PL) spectroscopy. The prepared product show suitable photo-luminescence under ultraviolet irradiation. Vibrating sample magnetometer (VSM) shows ferromagnetic property of the both CuFe2O4 and copper ferrite-carbon nanocomposite. The results show that this method for preparation of magnetic and luminescence nanocomposite as a candidate for sensor applications.Keywords: Carbon Quantum Dots; Nanocomposite; Magnetic; Photoluminescence","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"760-768"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45020689","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: 4

Synthesis of 3,4-dihydropyrimidinones using nano γ-Al2O3/BF3/Fe3O4 as an efficient magnetic nanocatalyst under solvent-free conditions 以纳米γ-Al2O3/BF3/Fe3O4为磁性纳米催化剂在无溶剂条件下合成3,4-二氢嘧啶类化合物

IF 1.4

Journal of Nanostructures Pub Date : 2020-10-01 DOI: 10.22052/JNS.2020.04.0008

A. Bamoniri, B. Mirjalili, Mahnaz Mahmoodi Fard Chegeni

{"title":"Synthesis of 3,4-dihydropyrimidinones using nano γ-Al2O3/BF3/Fe3O4 as an efficient magnetic nanocatalyst under solvent-free conditions","authors":"A. Bamoniri, B. Mirjalili, Mahnaz Mahmoodi Fard Chegeni","doi":"10.22052/JNS.2020.04.0008","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.0008","url":null,"abstract":"Nano-γ-Al2O3/BF3/Fe3O4 magnetic nanoparticles was synthesized and characterized with Fourier Transform Infrared (FT-IR), Powder X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Transmittance Electron Microscopy (TEM), Vibrating Sample Magnetometer (VSM), Brunauer–Emmett–Teller (BET) and Thermal Gravimetry (TGA). Dihydropyrimidinones (DHP) act as antivirals, antibacterial, antifungal, antiinflammatory, antioxidan, anticarcinogen, calcium channel blockers, antihypertensive, anti-cancer and anti-HIV compounds. Nano-γ-Al2O3/BF3/Fe3O4 magnetic nanoparticles as an efficient catalyst was applied for the mild and green one-pot multicomponent synthesis of 3,4-dihydro pyrimidine-2(1H)-ones/thiones under solvent-free conditions. Biginelli reaction proceeds through an aldehyde, β-keto ester and urea or thiourea to the dihydropyrimidinone. Excellent yields of dihydropyrmidinones are gained within a short reaction time. The proposed method offers several advantages such as short reaction time, high efficiency, smooth purification, cleaning reaction, ease of recovery, and reusable catalyst. The structure and purity of these compounds were confirmed using IR and 1H NMR and 13C NMR spectral analysis. Meanwhile, the physical property of products were compared with reported ones.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"751-759"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43649445","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

Effect of copper dopant on microstructural and optical properties of NiTiO3 ilmenite materials synthesized by citrate method 铜掺杂对柠檬酸盐法合成NiTiO3钛铁矿材料显微结构和光学性能的影响

IF 1.4

Journal of Nanostructures Pub Date : 2020-10-01 DOI: 10.22052/JNS.2020.04.010

N. Thoan, Pham Phi Hung, D. D. Dung, T. Ngoc, L. Bac

{"title":"Effect of copper dopant on microstructural and optical properties of NiTiO3 ilmenite materials synthesized by citrate method","authors":"N. Thoan, Pham Phi Hung, D. D. Dung, T. Ngoc, L. Bac","doi":"10.22052/JNS.2020.04.010","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.010","url":null,"abstract":"In this work, the Ni1-xCuxTiO3 (0 ≤x ≤ 0.1) ilmenite materials were successfully synthesized using the citrate-gel method using nickel nitrate, copper nitrate and titanium (IV) isopropoxide as Ni, Cu, Ti sources and citric acid as complexing reagent. The evolution of the microstructural properties was investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Powder X-ray diffraction pattern confirms the formation of the ilmenite phase for all the samples. The particle size of the prepared samples substantially increased with increase of copper dopant content. The study of phonon vibration by Raman spectroscopy identiﬁed a change in structure of NiTiO3 due to Cu dopant. The optical properties with the Cu content was carried out using UV-vis absorption spectroscopy. The reduction of optical band gap from 2.31 eV to 1.99 eV was obtained for undoped NiTiO3 and 10 mol.% Cu dopant in NiTiO3, respectively. To evaluate the photocatalyst properties of NiTiO3, the photocatalytic degradation of congo red under visible light irradiation was carried out. Our results revealed that the copper dopant into NiTiO3 lattice promoted the increase of particle size, decrease of optical bandgap and enhancement of textile photodegradation.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"769-778"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43143670","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

Quantum dots gold nanoparticle /porous silicon/silicon for solar cell applications 用于太阳能电池应用的量子点金纳米粒子/多孔硅/硅

IF 1.4

Journal of Nanostructures Pub Date : 2020-10-01 DOI: 10.22052/JNS.2020.04.019

M. Khalifa, M. H. Jaduaa, A. N. Abd

引用次数: 0

Adsorption of hydrogen sulfide (H2S) by BaFe2O4-activated clay nanocomposite: preparation and evaluation BaFe2O4活性粘土纳米复合材料吸附硫化氢的制备与评价

IF 1.4

Journal of Nanostructures Pub Date : 2020-10-01 DOI: 10.22052/JNS.2020.04.017

Shadi Sheibani, Samira Mandizadeh, Seyed Golam Abbas Mousavi, G. Mostafaii

{"title":"Adsorption of hydrogen sulfide (H2S) by BaFe2O4-activated clay nanocomposite: preparation and evaluation","authors":"Shadi Sheibani, Samira Mandizadeh, Seyed Golam Abbas Mousavi, G. Mostafaii","doi":"10.22052/JNS.2020.04.017","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.017","url":null,"abstract":"AbstractIn this study, BaFe2O4–activated clay nanocomposites were successfully synthesized via mechanosynthesis technique for the first time. Structural analysis of the products confirmed the nanoscale formation of nanocomposites. This study focused on adsorption of hydrogen sulfide (H2S) which is a poisonous gas and can be released from sewage sludge. Formation of nanocomposites was verified by scanning electron microscopy (SEM), energy dispersive X-ray (EDS) analysis, Fourier transform infrared (FTIR) and X-ray powder diffraction (XRD). Results showed that different loadings of barium ferrite in the nanocomposite were important for the adsorption rate. Furthermore, adsorption rate of hydrogen sulfide was improved by increasing BaFe2O4- activated clay concentration which was confirmed by statistical results. The highest average of removal efficiency was 92.79±0.90 in the concentration of 300 g.L-1and the loading of 6%. We could recycle BaFe2O4–activated clay nanocomposite 3 times without a significant decrease in activity. Enhanced performance of BaFe2O4–activated clay, compared to other nanocomposites, recommends its application for adsorptive desulfurization.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"838-845"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41738250","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

Synthesis and Analytical Characterization of Gold Nanoparticles using Microwave-Assisted Extraction System and Study their Application in Degradation 纳米金的微波萃取合成、分析表征及其在降解中的应用研究

IF 1.4

Journal of Nanostructures Pub Date : 2020-10-01 DOI: 10.22052/JNS.2020.04.001

Zainab TYAl-Abdullah, A. Al-Shawi, M. N. Aboud, B. A. A. Aziz, Hawraa QM.Al-Furaiji, Iman N Luaibi

{"title":"Synthesis and Analytical Characterization of Gold Nanoparticles using Microwave-Assisted Extraction System and Study their Application in Degradation","authors":"Zainab TYAl-Abdullah, A. Al-Shawi, M. N. Aboud, B. A. A. Aziz, Hawraa QM.Al-Furaiji, Iman N Luaibi","doi":"10.22052/JNS.2020.04.001","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.001","url":null,"abstract":"Preparation of gold nanoparticles (AuNPs) was done by the addition of tetrachloroaurate (HAuCl4) to dodonaea viscose (L.) leaves watery extract. The procedure was performed in microwave-assisted extraction (MAE). Dodonaea viscose (L.) watery extract functions as a reducing and capping agent to synthesis AuNPs. The gold nanoparticles was identified by the changes in colour from yellow to red –purple, UV-vis spectroscopy, and surface plasmon band at (600 nm). (EDX -FESEM) and TEM instruments were used to investigate the element analysis, distribution of nanoparticles and to calculate their sizes and shapes. Energy dispersive X-ray spectra (EDX) was applied for characterization of gold nanoparticles, the detected percentage of gold nanoparticles was (0.52 wt/wt %). The result from TEM shows the nanoparticles with diameter (6-80 nm) and vary shapes. Furthermore, characterization of nanoparticles was performed before and after the formation of gold nanoparticles using FT-IR. The band appeared at 669 cm-1 indicated the gold nanoparticle formation. The synthesized gold nanoparticles have been used for degradation of 6.6 % methylene blue organic dye pollutant in aqueous solution, and also for degradation of aliphatic hydrocarbons in crude oil. The results of degradation were monitored by GC-MS. The breakage of some organic materials and the appearance of new organic materials with less molecular weight and less abundance were achieved. Through the use of gold nanoparticles, it has been observed that a large number of aliphatic compounds have disappeared, especially those with molecular weights 200-288, the loss in the molecular weight is about 40%.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"682-690"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46647554","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

Magnetic metal nanoparticles decorated ionic liquid with excellent antibacterial activity 磁性金属纳米粒子修饰离子液体具有优异的抗菌活性

IF 1.4

Journal of Nanostructures Pub Date : 2020-07-01 DOI: 10.22052/JNS.2020.03.015

H. Salari, Mehdi Shahedi Asl, M. Padervand, M. Gholami

{"title":"Magnetic metal nanoparticles decorated ionic liquid with excellent antibacterial activity","authors":"H. Salari, Mehdi Shahedi Asl, M. Padervand, M. Gholami","doi":"10.22052/JNS.2020.03.015","DOIUrl":"https://doi.org/10.22052/JNS.2020.03.015","url":null,"abstract":"Fe3O4 magnetic structure was synthesized with co-precipitation method. Surface of magnetic core was modified with hydrophobic BMIM[PF6] ionic liquid. The samples became antibacterial by loading gold, copper and silver nanoparticles and denoted as Fe3O4/IL/X (X=Ag, Au, Cu). X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), thermal gravimetric analysis (TGA), Atomic absorption spectroscopy (AAS), Fourier transform infrared (FTIR) and vibration sample magnetometer (VSM) technics were applied for catalysts characterization, metal concentration analysis and morphology monitoring. Modified nanostructures were used for inactivation of Escherichia coli as the gram negative and Staphylococcus aureus as the gram positive of bacteria. Transmition electron micrscopy (TEM) images indicated that highest bacteria cell walls destruction is achieved when the surface of the magnetic nanostructure is coated with gold particles. Hydrogen bonds between cell wall and ionic liquid and gradual release of metals from Fe3O4/IL surface facilitate the metals arrive to outer layer of bacteria. Minimum inhibitory concentration (MIC) study approved the positive effect of ionic liquid.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"613-623"},"PeriodicalIF":1.4,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41395333","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, characterization and photocatalytic activity of FeCr2O4 and FeCr2O4/Ag nanocomposites FeCr2O4和FeCr2O4/Ag纳米复合材料的合成、表征及其光催化活性

IF 1.4

Journal of Nanostructures Pub Date : 2020-07-01 DOI: 10.22052/JNS.2020.03.008

A. Abbasi, Amir Homayoun Keihan, M. A. Golsefidi, M. Rahimi‐Nasrabadi, H. Khojasteh

{"title":"Synthesis, characterization and photocatalytic activity of FeCr2O4 and FeCr2O4/Ag nanocomposites","authors":"A. Abbasi, Amir Homayoun Keihan, M. A. Golsefidi, M. Rahimi‐Nasrabadi, H. Khojasteh","doi":"10.22052/JNS.2020.03.008","DOIUrl":"https://doi.org/10.22052/JNS.2020.03.008","url":null,"abstract":"Ferrite chromite (FeCr2O4) powders have been synthesized by a hydrothermal method using various alkaline agents and capping agent. For the first time, nanostructured Ferrite chromite was synthesized with utilizing tetraethylenepantamine as a new alkaline agent. The SDS, PVP and PEG as stabilization agent and capping agent in presence of TEPA as alkaline agent were employed to prepare of the Ferrite chromite. The structural character of as-synthesized powders was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray microanalysis (EDX). The results indicate that the as-obtained powders are pure. The electronic properties of as-synthesized powders was characterized by UV–Vis diffuse reflectance analysis (DRS), which shows the as-obtained sample has a significant absorption in the UV region. The photocatalytic degradation of the rhodamine B, methyl orange, murexide and methylene blue as water pollutants were investigated. According to the results, photocatalytic activity of FeCr2O4/Ag nanostructures were better than of other samples and degradation percent of rhodamine B as a cationic pollutant was more than the other dyes.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"518-530"},"PeriodicalIF":1.4,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49317364","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