Volume 5,Issue 1,2019最新文献_第3页

Fabrication, Characterization and Comparison of Nanocrystalline NiMn2O4 and NiZn0.2Mn1.8O4 NTCR Ceramic Thermistor Powders 纳米晶NiMn2O4和NiZn0.2Mn1.8O4 NTCR陶瓷热敏电阻粉体的制备、表征及比较

Volume 5,Issue 1,2019 Pub Date : 2019-01-14 DOI: 10.30799/jnst.201.19050106

Almaw Ayele Aniley, S. K. Kumar, A. Kumar

引用次数: 3

One Step Hydrothermal Synthesis of Nanostructured VO2(B) for Photocatalytic Application 水热一步法合成光催化用纳米结构VO2(B)

Volume 5,Issue 1,2019 Pub Date : 2019-01-05 DOI: 10.30799/JNST.195.19050102

Meenu, Pawan Kumar, S Brijnandan Dehiya

引用次数: 4

Biosynthesis and Characterization of Iron Oxide Nanoparticles via Syzygium aromaticum Extract and Determination of Its Cytotoxicity against Human Breast Cancer Cell Lines 香薷提取物制备氧化铁纳米颗粒及其对人乳腺癌细胞的毒性测定

Volume 5,Issue 1,2019 Pub Date : 2019-01-05 DOI: 10.30799/JNST.178.19050103

T. Thenmozhi, Nadella Rasajna, M. Rajesh, N. Sushma

{"title":"Biosynthesis and Characterization of Iron Oxide Nanoparticles via Syzygium aromaticum Extract and Determination of Its Cytotoxicity against Human Breast Cancer Cell Lines","authors":"T. Thenmozhi, Nadella Rasajna, M. Rajesh, N. Sushma","doi":"10.30799/JNST.178.19050103","DOIUrl":"https://doi.org/10.30799/JNST.178.19050103","url":null,"abstract":"Magnetic iron oxide nanoparticles exhibit many interesting properties due to their surface chemistry and they can be exploited in biomedical and technological applications. The iron oxide nanoparticles (FeO NPs) using ferric chloride, ferrous chloride, PVP (Poly Vinyl Pyrolidone) and Syzygium aromaticum extract were successfully synthesized by wet-chemical co-precipitation method. The PVP coated FeO NPs and S. aromaticum loaded to PVP coated FeO NPs were systematically characterized by using expository tools. UV-Visible spectroscopy showed the maximum absorbance at 480 nm and 554 nm due to the excitation of surface plasmon vibrations in the FeO NPs formation. Fourier transform infrared (FT-IR) spectrum showed the presence of functional groups of in the form of various band positions and this study confirmed that phenols and primary amines were majorly present. DLS studies revealed narrow size of particles i.e., 399.8 nm and 190.1 nm. Particle size distribution was showed at 256 nm and 153 nm for these samples and zeta potential values were observed at -23.7 and -18.8 mV with greater stability. The X-ray diffraction (XRD) analysis is in good agreement with a high degree of crystallographic nature of particles and the average particle size was found to be 23 nm and 29 nm using Scherrer equation. FT-Raman spectrum showed three main characteristic peaks. The scope of this study was extended by examining the cytotoxicity of PVP coated FeO NPs and S. aromaticum loaded PVP coated FeO NPs on human breast (MCF-7) cancer cell lines. The results suggest that the S. aromaticum loaded FeO NPs acts as a potential anti-cancer agent and are a promising research field for lots of biomedical applications particularly for breast cancer studies.","PeriodicalId":23586,"journal":{"name":"Volume 5,Issue 1,2019","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87134872","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, Characterization of α-Al2O3 Nanoparticles and Its Application in Decolorization of Methyl Orange Azo Dye in the Presence of UV Light α-Al2O3纳米颗粒的合成、表征及其在甲基橙偶氮染料紫外光脱色中的应用

Volume 5,Issue 1,2019 Pub Date : 2019-01-05 DOI: 10.30799/JNST.192.19050101

Vijaya Pandurang Dhawale, D. Late, S. D. Kulkarni

{"title":"Synthesis, Characterization of α-Al2O3 Nanoparticles and Its Application in Decolorization of Methyl Orange Azo Dye in the Presence of UV Light","authors":"Vijaya Pandurang Dhawale, D. Late, S. D. Kulkarni","doi":"10.30799/JNST.192.19050101","DOIUrl":"https://doi.org/10.30799/JNST.192.19050101","url":null,"abstract":"Present study deals with the sol-gel synthesis and application of α-Al2O3 nanoparticles (alumina) to decolorize the azo anionic dye methyl orange (MO). α-Al2O3 nanoparticles were successfully synthesized using aluminium oxide, 25% ammonia and polyvinyl alcohol (PVA) were used as low cost raw materials. The properties of synthesized nanoparticles were investigated by using UV-visible spectroscopy, XRD, FTIR, SEM, EDAX, Raman spectroscopy and TEM. From UV–visible spectra, band gap was calculated and it was found to be 3.31 eV. Average crystal size of α-Al2O3 nanoparticles from XRD peaks found to be 25 nm having rhombohedral structure. FTIR spectra reveals that functional groups (O-Al-O) are present. SEM image shows distribution pattern of α-Al2O3 nanoparticles. Chemical composition of α-Al2O3 nanoparticles was confirmed from EDAX spectroscopy measurement. Raman spectra showed crystalline nature of α-Al2O3 nanoparticles. The effect of concentration and pH of dye, dosage of nano adsorbent and contact time were studied. The systematic study shows that, successful color removal of methyl orange dye up to 54% in three hours contact time of pH 4. Hence α-Al2O3 nanoparticles can be used for dye removal from waste water. Industrialization of this technique will be cost effective way to decolorize the textile dye present in water system.","PeriodicalId":23586,"journal":{"name":"Volume 5,Issue 1,2019","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86841366","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

Pharmacological Applications of Silver Nanoparticles Synthesized using Aqueous Leaf Extract of Ximenia americana 美洲西梅叶水提物合成银纳米颗粒的药理应用

Volume 5,Issue 1,2019 Pub Date : 2019-01-05 DOI: 10.30799/jnst.183.19050104

Arun K. Shettar, Shivakumar B. Madagi, Sunanda Sarwad

引用次数: 0

Synthesis, Characterization and Photocatalytic Activity of Calcareous/TiO2 Nanocomposites under UV Light Irradiation using Methylene Blue Dye 亚甲基蓝染料制备钙/TiO2纳米复合材料及其光催化活性

Volume 5,Issue 1,2019 Pub Date : 2019-01-05 DOI: 10.30799/JNST.185.19050105

.. P.Mariselvi, T. A. Kumar, V. Veeraputhiran, G. Alagumuthu

{"title":"Synthesis, Characterization and Photocatalytic Activity of Calcareous/TiO2 Nanocomposites under UV Light Irradiation using Methylene Blue Dye","authors":".. P.Mariselvi, T. A. Kumar, V. Veeraputhiran, G. Alagumuthu","doi":"10.30799/JNST.185.19050105","DOIUrl":"https://doi.org/10.30799/JNST.185.19050105","url":null,"abstract":"Titanium dioxide (TiO 2 ) occurs in three basic modification anatase, rutile and brookite. Anatase is widely studied due to its very good photocatalytic properties, which may be used in additives to paints and construction materials, degradation of organic pollutants in air and water etc.,. In the present work, the synthesis, characterization and photocatalytic activity of calcareous/TiO 2 nanocomposites on the removal of methylene blue dye were carried out by using solvothermal method. Synthesized nanocomposites was characterized by using XRD, SEM, EDAX and UV-Vis absorption spectroscopy. The XRD pattern reveals the course of composites formation and calcareous/TiO 2 nanocomposites containing anatase phase of TiO2 were found. The higher photocatalytic activity was obtained in anatase phase of TiO 2 than rutile. It is concluded that the higher photocatalytic activity in anatase is due to parameters like band gap, number of hydroxyl groups, surface area and porosity of catalyst. The spherical morphology of calcareous/TiO 2 nanocomposites was observed in SEM analysis. The photocatalytic efficiency of various operational parameters like concentration, time, catalyst loading and pH on methylene blue dye was also studied.","PeriodicalId":23586,"journal":{"name":"Volume 5,Issue 1,2019","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89722229","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