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Identification of Crystal Structure, Surface Area, and Magnetic Properties of Mn0.25Fe2.75O4/rGO Nanocomposites 识别 Mn0.25Fe2.75O4/rGO 纳米复合材料的晶体结构、表面积和磁性能
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-01-15 DOI: 10.4028/p-glu976
M. I. Najmi, S. Sunaryono, E. Latifah, A. Taufiq, N. Mufti, N. M. Chusna
{"title":"Identification of Crystal Structure, Surface Area, and Magnetic Properties of Mn0.25Fe2.75O4/rGO Nanocomposites","authors":"M. I. Najmi, S. Sunaryono, E. Latifah, A. Taufiq, N. Mufti, N. M. Chusna","doi":"10.4028/p-glu976","DOIUrl":"https://doi.org/10.4028/p-glu976","url":null,"abstract":"The aim of this research is to identify the crystal structure, surface area, and magnetic properties of The Mn0.25Fe2.75O4-rGO (reduced Graphene Oxide) nanocomposites (NCs). The synthesis of Mn0.25Fe2.75O4-rGO nanocomposites used the co-precipitation method. The rGO was obtained from the chemical reduction of GO by hydrazine hydrate as the reduction agent. The ratio between Mn0.25Fe2.75O4 nanoparticles and rGO was 1:1 that ultrasonicated at 200 Hz for an hour. The IR spectra of NCs from the FTIR instrument showed that the absorption band around 580 cm-1 and 1622 cm-1 corresponds to the stretching mode of Fe-O and C=C respectively. According to X-Ray Diffraction (XRD) pattern analysis, peak of Mn0.25Fe2.75O4 was detected on 2θ at 30.1°, 35.5°, 53.5°, 57.1°, 62.7° and the peak of rGO phases was amorphous that detected on 2θ between 17º and 30º. The XRD pattern analysis and FTIR spectra have proved the completion of NC’s synthesis. The crystallite size was between 10.3 nm by Scherer's formula. The Specific Surface Area showed that the surface area of the nanocomposites was 100.61 m2/g and the Molecular cross-sectional area was 0.162 nm2 by BET Theory. The Magnetic properties show that the NCs were Superparamagnetic material that has a saturation magnetization of 9.34 emu/g. The material has many potentials to be explored by the researcher around the world.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530039","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
Crystal Structure, Morphology, and Magnetic Properties of Magnetic Nanocomposites with Iron Oxide Core and Zinc Oxide/Titanium Oxide Shell 具有氧化铁芯和氧化锌/氧化钛外壳的磁性纳米复合材料的晶体结构、形态和磁性能
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-01-15 DOI: 10.4028/p-6oel85
Eny Fatmawati, S. Halizah, N. M. Chusna, Futri Yuliana, S. Sunaryono
{"title":"Crystal Structure, Morphology, and Magnetic Properties of Magnetic Nanocomposites with Iron Oxide Core and Zinc Oxide/Titanium Oxide Shell","authors":"Eny Fatmawati, S. Halizah, N. M. Chusna, Futri Yuliana, S. Sunaryono","doi":"10.4028/p-6oel85","DOIUrl":"https://doi.org/10.4028/p-6oel85","url":null,"abstract":"In this work, we successfully synthesized a magnetic nanocomposite material (Fe3O4@ZnO/TiO2) with an iron oxide core and a zinc oxide/TiO2 shell (Fe3O4@ZnO/TiO2). The purpose of this study was to characterize the Crystal Structure, Morphology, and Magnetic Properties of Magnetic Nanocomposites with Iron Oxide Core and Zinc Oxide/Titanium Oxide Shell. The crystal structure of the sample was analyzed using X-ray diffraction, which identified three distinct phases: Fe3O4, ZnO, and TiO2. These phases respectively exhibited cubic spinel, hexagonal wurtzite, and tetragonal crystal structures. Transmission Electron Microscopy (TEM) characterization confirmed that the sample had a magnetic core–shell structure, with superparamagnetic properties and excellent stability owing to its spinel cubic structure, which is the primary magnetic material structure of the sample. The successful formation of the Fe3O4@ZnO/TiO2 nanocomposite represents a significant advancement in the synthesis of materials. This could serve as a basis for further investigations into magnetic materials, opening up possibilities for their application across diverse fields.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139620968","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
Journal of Metastable and Nanocrystalline Materials Vol. 38 易变和纳米晶材料杂志》第 38 卷
Journal of Metastable and Nanocrystalline Materials Pub Date : 2024-01-15 DOI: 10.4028/b-ex9fmp
A. D. Pramata
{"title":"Journal of Metastable and Nanocrystalline Materials Vol. 38","authors":"A. D. Pramata","doi":"10.4028/b-ex9fmp","DOIUrl":"https://doi.org/10.4028/b-ex9fmp","url":null,"abstract":"","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":" 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139621442","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
Functional Effect in Density Functional Theory Calculation of Au23(SR)16 Nanocluster Au23(SR)16纳米团簇密度泛函理论计算中的泛函效应
Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-07-21 DOI: 10.4028/p-avPYl2
S. S. Mohd-Tajudin, W. N. Zaharim, S. Shukri, S. Ahmad, D. F. Hasan-Baseri, Ang Lee Sin, Risdiana Risdiana, L. Safriani, I. Watanabe
{"title":"Functional Effect in Density Functional Theory Calculation of Au23(SR)16 Nanocluster","authors":"S. S. Mohd-Tajudin, W. N. Zaharim, S. Shukri, S. Ahmad, D. F. Hasan-Baseri, Ang Lee Sin, Risdiana Risdiana, L. Safriani, I. Watanabe","doi":"10.4028/p-avPYl2","DOIUrl":"https://doi.org/10.4028/p-avPYl2","url":null,"abstract":"Au nanocluster may exhibit magnetic behaviour in contrast to its bulk state diamagnetic characteristic. We have used four functionals, namely, B3LYP, LSDA, HSEH1PBE and PBEPBE, in DFT calculations to examine the effect of different functionals on the structure of Au23(SR)16 nanocluster. The correct optimized structure Au23(SR)16 nanocluster that has a lower energy was found to be important to study possible muon sites and its associated hyperfine coupling constant. Our computational investigation shows that the B3LYP functional optimized structure resulted in lower total energy of the system as compared to the one produced by using the other functionals.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130047703","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
Nanotechnology and their Evaluation of Bi-Functional Applications 纳米技术及其双功能应用评价
Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-07-21 DOI: 10.4028/p-dKORv2
Amulya Giridasappa, Kiran Kenchappa Kiran, Shashanka Rajendrachari
{"title":"Nanotechnology and their Evaluation of Bi-Functional Applications","authors":"Amulya Giridasappa, Kiran Kenchappa Kiran, Shashanka Rajendrachari","doi":"10.4028/p-dKORv2","DOIUrl":"https://doi.org/10.4028/p-dKORv2","url":null,"abstract":"Nanotechnology has an ever-growing interest due to their utilizations in various platforms of science. With their unique features in structures and morphology, they have dominated the arena of research and development. In this review, we have delt with applications of nanomaterials as both photocatalytic and biological functions. The raising concerns pertaining to diseases and infections worldwide, our work was intended to review nanoparticles which could potentially target such problems. To study the preparations of nanoparticles both by chemical and biological methods. We have also observed for bactericidal ability against pathogenic organisms and found to be effective in controlling the growth of such microbes. Further as per the survey they were also found to have the ability to scavenge certain oxidants like DPPH, ABTS and NO etc. Keywords: Nanotechnology, antioxidant ability, antibacterial capacity, biocatalysis","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117037027","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
An Overview of Nanocomposites with Recent Advancements 纳米复合材料综述及最新进展
Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-07-21 DOI: 10.4028/p-VW2fCP
Ayşenur Oğuzyer, Shashanka Rajendrachari
{"title":"An Overview of Nanocomposites with Recent Advancements","authors":"Ayşenur Oğuzyer, Shashanka Rajendrachari","doi":"10.4028/p-VW2fCP","DOIUrl":"https://doi.org/10.4028/p-VW2fCP","url":null,"abstract":"The research in nanocomposites is accelerating with greater velocity due to its wide range of properties and applications in various sectors like construction, marine, automobile, aerospace, defense, and biomedical fields. Most of the researchers are trying to improve the properties further by dispersing various nanomaterials to the matrix to improve the matrix properties. In the present review article, we have discussed in brief the nanocomposites and their various synthesis routes along with their advantages and disadvantages. Why nanocomposites are more preferable over conventional composite materials is also discussed. Important characterization techniques like X-Ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier-transform infrared spectroscopy (FTIR), thermogravimetry (TG) and differential scanning calorimetry (DSC) used to investigate the nanocomposites are also discussed.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122031726","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
Photoluminescence and Supercapacitive Properties of Carbon Dots Nanoparticles: A Review 纳米碳点的光致发光和超电容性能研究进展
Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-07-21 DOI: 10.4028/p-LpI6yW
Nidhi Manhas, L. S. Kumar, V. Adimule
{"title":"Photoluminescence and Supercapacitive Properties of Carbon Dots Nanoparticles: A Review","authors":"Nidhi Manhas, L. S. Kumar, V. Adimule","doi":"10.4028/p-LpI6yW","DOIUrl":"https://doi.org/10.4028/p-LpI6yW","url":null,"abstract":"Carbon Dots (CDs) have gained the attention of many researchers since its discovery in 2004 due to their unique nanostructure and properties. These are very promising carbonaceous nanomaterials having wide range of applications in sensors, imaging, energy storage, nanomedicine, electrocatalysis and optoelectronics. CDs have shown excellent physical and chemical properties like, high crystallization, good dispersibility and photoluminescence. Besides, these are now known to have excellent biocompatibility, long-term chemical stability, cost-effectiveness and negligible toxicity. Due to favourable physical structure and chemical characteristics, these nanocarbon-based materials have drawn an interest as supercapacitor (SC) electrode materials, opening upnew opportunities to increase the energy density and lifespan of SCs. Thus, variety of quick and affordable methods i.e., the arc-discharge method, microwave pyrolysis, hydrothermal method, and electrochemical synthesis have been developed to synthesize this versatile nanomaterial. There are undoubtedly many methods for creating CDs that are effective and affordable, but due to the safety and simplicity of synthesis, CDs made from waste or using environmentally friendly methods have been innovated. In order to devise sustainable chemical strategies for CDs, green synthetic methodologies based on \"top-down\" and \"bottom-up\" strategies have been prioritised. This review summarizes numerous synthetic strategies and studies that are essential for the creation of environment friendly processes for CDs. The recent developments in the use of CDs for photoluminescence and supercapacitance have been highlighted providing a clear understanding of the new source of energy and optoelectronic materials with a futuristic perspective.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114437954","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
Controlled Synthesis and Electrical Properties Study of GeAs2Te4 Single Crystals GeAs2Te4单晶的控制合成及电性能研究
Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-07-21 DOI: 10.4028/p-aab8AN
Mengxi Yu, J. Chen, YuZhou Du, Wang Zi Han, Ming Mei, Xiangbang Zhu, Liang Li
{"title":"Controlled Synthesis and Electrical Properties Study of GeAs2Te4 Single Crystals","authors":"Mengxi Yu, J. Chen, YuZhou Du, Wang Zi Han, Ming Mei, Xiangbang Zhu, Liang Li","doi":"10.4028/p-aab8AN","DOIUrl":"https://doi.org/10.4028/p-aab8AN","url":null,"abstract":"Exploration of the optoelectronic memristor is required to investigate the photoelectric properties of materials. The traditional memristor material GeAs2Te4 is hopeful to be developed into a new type of optoelectronic memristor. However, acquiring high-quality single crystals remains challenging, and the electrical properties of single crystals of GeAs2Te4 need to be explored. Herein, a controlled method is introduced to grow reliable quality GeAs2Te4 single crystals, and the electrical and optoelectronic properties are studied. The photodetector based on GeAs2Te4 exhibits acceptable optoelectronic performance at designed low temperatures. The responsivity and detectivity of the GeAs2Te4-based photodetector reached the value of about 0.137 A W-1 and 6.9×107 Jones, respectively. It is promising to introduce this family of materials into the field of photodetector and also maybe further in the area of optoelectronic memristors.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115202448","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 Use of Fourier Synthesis and Maximum Entropy Method to Investigate Crystalline Defects of the T’-Pr2-xCexCuO4 Nanocrystals 利用傅里叶合成和最大熵法研究T ' -Pr2-xCexCuO4纳米晶的晶体缺陷
Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-07-21 DOI: 10.4028/p-n6vZqi
Putu Eka Dharma Putra, M. Baqiya, R. Irfanita, R. Fajarin, Darminto
{"title":"The Use of Fourier Synthesis and Maximum Entropy Method to Investigate Crystalline Defects of the T’-Pr2-xCexCuO4 Nanocrystals","authors":"Putu Eka Dharma Putra, M. Baqiya, R. Irfanita, R. Fajarin, Darminto","doi":"10.4028/p-n6vZqi","DOIUrl":"https://doi.org/10.4028/p-n6vZqi","url":null,"abstract":"In this study, the use of the Fourier synthesis and the so-called Maximum Entropy Method (MEM) are evaluated in order to reveal the crystalline defect of the T’-type structure of one of 214 cuprate system, namely Pr2-xCexCuO4 (PCCO) powders. In the low-level density, the MEM calculations give a clear picture of the scattering and can eliminate the secondary scattering which may bother the main electron distribution of the specific atomic site. The covalent-bond is even clearer to be seen rather than the one obtained by the Fourier synthesis. This brings a further suggestion to use the MEM calculations in case of describing the scattering density of electron. Moreover, by means the used of the MEM calculations, the defect induced magnetism including the role of the tetravalent ionic doping and the annealing reduction effect is briefly discussed in this report.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131068632","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
Journal of Metastable and Nanocrystalline Materials Vol. 37 易变和纳米晶材料杂志》第 37 卷
Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-07-21 DOI: 10.4028/b-ltfmi8
V. Adimule, Rajendrachari Shashanka, Agustinus Agung Nugroho
{"title":"Journal of Metastable and Nanocrystalline Materials Vol. 37","authors":"V. Adimule, Rajendrachari Shashanka, Agustinus Agung Nugroho","doi":"10.4028/b-ltfmi8","DOIUrl":"https://doi.org/10.4028/b-ltfmi8","url":null,"abstract":"","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139356669","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
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