Volume 4,Issue 5,2018最新文献_第2页

Influence of Ag-Dopant on Structural Optical and Electrical Properties of Cu(1-x)AgxO Thin Films Prepared By Chemical Spray Pyrolysis Technique ag掺杂对化学喷雾热解法制备Cu(1-x)AgxO薄膜结构光学和电学性能的影响

Volume 4,Issue 5,2018 Pub Date : 2018-11-11 DOI: 10.30799/JNST.177.18040521

R. Shabu, A. Moses Ezhil Raj

引用次数: 5

Characterization and Magnetic Properties of Zinc Ferrite Synthesized by Combustion Route 燃烧法合成铁氧体锌的表征及磁性能

Volume 4,Issue 5,2018 Pub Date : 2018-11-11 DOI: 10.30799/JNST.170.18040519

A. Jadhav, B. Raghunanda, Ashok D. Shetkar, Ajai Kumar S. Molakeri

引用次数: 1

Influence of Miscut Angle on the Magnetoresistance Behavior of Epitaxial Fe3O4 Thin Films Grown on Vicinal Substrates 误切角对邻近衬底上生长的Fe3O4外延薄膜磁阻性能的影响

Volume 4,Issue 5,2018 Pub Date : 2018-11-11 DOI: 10.30799/JNST.166.18040518

S. Arora, I. Shvets

引用次数: 0

Morphology Manipulation and Related Properties of High Crystalline Bi2S3 Nanorods by Reflux Approach 回流法制备高结晶Bi2S3纳米棒的形貌及相关性能

Volume 4,Issue 5,2018 Pub Date : 2018-11-08 DOI: 10.30799/JNST.159.18040516

J. Arumugam, A. Raj, A. Irudayaraj

{"title":"Morphology Manipulation and Related Properties of High Crystalline Bi2S3 Nanorods by Reflux Approach","authors":"J. Arumugam, A. Raj, A. Irudayaraj","doi":"10.30799/JNST.159.18040516","DOIUrl":"https://doi.org/10.30799/JNST.159.18040516","url":null,"abstract":"One dimensional Bi2S3 nanorods have been successfully synthesized by a very simple reflux method with different precursor concentration for 2 hours at 180 �C. The as-synthesized Bi2S3 powders were characterized by X-ray diffraction (XRD), high resolution scanning electron microscope (HRSEM), high resolution transmission microscope (HRTEM), UV-Vis spectrometer, Fourier transform infrared (FTIR) spectrometer. X-ray diffraction (XRD) results show that the resulting nanocrystals have an orthorhombic structure. X-ray diffraction patterns indicate a polycrystalline nature and the crystallite sizes seem increase with increase in the concentration. The HRSEM and HRTEM images reveal that the diameter of the nanorods increase with increasing concentration of the precursor. Morphological analysis reveals that the as-prepared Bi2S3 nanorods can be tuned to morphology by varying precursor concentration from 0.01 M to 0.001 M. The bismuth nitrate, which is known to be a linear polymer, plays a critical role as a precursor and a template for the growth of uniform Bi2S3 nanorods. Bi2S3 nanorods are good absorbents of solar radiation and hence can be used in solar cells.","PeriodicalId":268157,"journal":{"name":"Volume 4,Issue 5,2018","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125078721","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 Efficient Photocatalytic Activity of Hydrothermally Synthesized SnO2 Nanosheets 水热合成SnO2纳米片的合成、表征及高效光催化活性研究

Volume 4,Issue 5,2018 Pub Date : 2018-10-28 DOI: 10.30799/JNST.163.18040513

V. M. Vinosel, S. Anand, S. Pauline

引用次数: 0

Hydrothermal Green Synthesis of Silver Nanoparticles using Azadirachta indica A. Juss. Fruit Juice for Potential Antibacterial Activity 水热绿色合成纳米银的研究。果汁的潜在抗菌活性

Volume 4,Issue 5,2018 Pub Date : 2018-10-28 DOI: 10.30799/JNST.160.18040515

K. Ramar, A. Ahamed

{"title":"Hydrothermal Green Synthesis of Silver Nanoparticles using Azadirachta indica A. Juss. Fruit Juice for Potential Antibacterial Activity","authors":"K. Ramar, A. Ahamed","doi":"10.30799/JNST.160.18040515","DOIUrl":"https://doi.org/10.30799/JNST.160.18040515","url":null,"abstract":"This study employed a green, eco-friendly and convenient hydrothermal method for the synthesis of stable silver nanoparticles (Ag NPs) using neem (Azadirachta indica A Juss) fruit extract, which also acts as a reducing and capping agents. Since neem fruits has been found to have various medicinal applications, this fruit has been chosen in this paper to obtain Ag NPs. The Ag NPs were characterized by PXRD, UV–Vis diffuse reflectance spectra (DRS), FTIR, FESEM-EDAX, and HRTEM analysis. UV–Vis DRS spectra studies provided sufficient evidences for the formation of Ag NPs. The major role of functional groups present in the synthesis and stabilization of the NPs was obtained from FTIR studies. The PXRD and HRTEM investigations clearly demonstrated the crystalline nature of the NPs. From the HRTEM images, the Ag NPs were found to be spherical and of nearly uniform size with an average size of 13 nm. Further, Ag NPs were subjected to the agar disc diffusion antimicrobial assay (Mueller–Hinton Agar testing) against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) bacteria. The test results showed the potent antibacterial activity of NPs for Gram-positive bacteria is higher than that the Gram- negative bacteria","PeriodicalId":268157,"journal":{"name":"Volume 4,Issue 5,2018","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126012738","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: 3

Facile Synthesis of Graphene Based ZnO Nanocomposite 石墨烯基ZnO纳米复合材料的简易合成

Volume 4,Issue 5,2018 Pub Date : 2018-10-28 DOI: 10.30799/JNST.158.18040512

P. Geetha, E. S. Ram, N. Anasuya, P. Sarita

引用次数: 1

Synthesis and Characterization of PANI/PVDF Composites for Dielectric and AC Conductivity 聚苯胺/聚偏氟乙烯复合材料的合成与表征

Volume 4,Issue 5,2018 Pub Date : 2018-10-28 DOI: 10.30799/JNST.145.18040514

S. Nagaraja, Sharanabasamma M. Ambalagi, Hajeebaba K. Inamdar, B. Bharathi, D. Mahalesh, M. Prasad, S. Basavaraja, P. Naik

{"title":"Synthesis and Characterization of PANI/PVDF Composites for Dielectric and AC Conductivity","authors":"S. Nagaraja, Sharanabasamma M. Ambalagi, Hajeebaba K. Inamdar, B. Bharathi, D. Mahalesh, M. Prasad, S. Basavaraja, P. Naik","doi":"10.30799/JNST.145.18040514","DOIUrl":"https://doi.org/10.30799/JNST.145.18040514","url":null,"abstract":"The polymer composites of polyaniline (PANI) with PVDF have been synthesized by polymerization method. The different composites of PANI with PVDF are obtained by adding 0.5, 1, 1.5, 2 and 2.5 N solutions of PVDF during the polymerization to get the PANI/PVDF composites. The synthesized samples of PANI and composite of PANI with PVDF polymer were characterized by using X-Ray diffraction (XRD). The dielectric properties such as dielectric constant, dielectric loss and AC conductivity for the composites of PANI/PVDF at different weight percentages are studied as a function of frequency in the range 5 Hz–35 MHz at ambient temperature. It is found that the dielectric permittivity decreased exponentially at lower frequency region up to 300 Hz and then the dielectric permittivity remains constant at higher frequency region as the frequency increased. It is also observed that the dielectric permittivity increased as the concentration of PVDF in the polymer composite increased as compared to PANI. Further, it is observed that the dielectric loss increased as a weight percentage of PVDF increased in the composite of PANI. In case of AC conductivity as the frequency increased the AC conductivity remains constant up to 6.75 MHz and afterwards it increases as frequency increased. This is due to the increase in charge carriers through the hopping mechanism in the polymer composites. It is also observed that as a weight percentage of PVDF increased the AC conductivity is also increased","PeriodicalId":268157,"journal":{"name":"Volume 4,Issue 5,2018","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123252536","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: 8

Phytochemical Mediated Synthesis of Silver Nanoparticles using Musa paradisiaca Peduncle Latex and Its Photocatalytic and Antimicrobial Activity 天蚕花梗乳胶合成纳米银及其光催化和抗菌活性研究

Volume 4,Issue 5,2018 Pub Date : 2018-09-14 DOI: 10.30799/JNST.151.18040511

B. Venkataramana, S. Sankar, A. Saikumar, B. V. K. Naidu

{"title":"Phytochemical Mediated Synthesis of Silver Nanoparticles using Musa paradisiaca Peduncle Latex and Its Photocatalytic and Antimicrobial Activity","authors":"B. Venkataramana, S. Sankar, A. Saikumar, B. V. K. Naidu","doi":"10.30799/JNST.151.18040511","DOIUrl":"https://doi.org/10.30799/JNST.151.18040511","url":null,"abstract":"In the present work, green synthesis of silver nanoparticles (AgNPs) using a natural phytochemical agent has been described. The aqueous latex from Musa paradisiaca peduncle has been utilized as reducing as well as stabilizing agent. The formation of AgNPs was optimized by varying latex and AgNO3 concentrations and finally reaction time. Ultraviolet-visible spectroscopic analysis showed the surface plasmon resonance peak between 350 and 450 nm confirms the formation of silver nanoparticles. X-ray powder diffraction analysis revealed the crystalline nature of AgNPs, Fourier transform infrared spectroscopy analysis revealed that AgNPs were stabilized by polyphenols and other aromatics present in the Musa Paradisiaca peduncle latex, while X-ray energy dispersive spectroscopy confirms the metallic nature. The field emission scanning electron microscopy and high resolution transmission electron microscopy showed the spherical shape of the particles and size distribution of AgNPs measured by dynamic light scattering which are in the range of 40 to 50 nm. The synthesized AgNPs showed photocatalytic activity on the degradation / removal of the methylene blue dye and the antimicrobial activity against Pseudomonas aeruginosa, Staphylococcus aureus and Klebseilla bacterial species.","PeriodicalId":268157,"journal":{"name":"Volume 4,Issue 5,2018","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128536025","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 of PbS Nanoparticles and Its Potential as a Biosensor based on Memristic Properties 基于Memristic特性的PbS纳米颗粒的合成及其生物传感器潜力

Volume 4,Issue 5,2018 Pub Date : 2018-09-14 DOI: 10.30799/JNST.147.18040510

D. Himadri, D. Pranayee, S. Kumar

引用次数: 5