Journal of Nanoscience and Technology最新文献_第2页

Visible Light Induced Photocatalytic Degradation of Bismarck Brown using CaMoO4-MWCNT Composite CaMoO4-MWCNT复合材料可见光诱导光催化降解俾斯麦棕

Journal of Nanoscience and Technology Pub Date : 2019-09-10 DOI: 10.30799/jnst.281.19050503

B. Pathak, C. Ameta, R. Ameta

引用次数: 1

Biosynthesis of Metallic Nanoparticles from Medicinal Plants: A Review 药用植物中金属纳米颗粒的生物合成研究进展

Journal of Nanoscience and Technology Pub Date : 2019-09-09 DOI: 10.30799/jnst.277.19050502

Atul Arya, S Kumar, Amrita Suryavanshi, D. Kain, Vandana

{"title":"Biosynthesis of Metallic Nanoparticles from Medicinal Plants: A Review","authors":"Atul Arya, S Kumar, Amrita Suryavanshi, D. Kain, Vandana","doi":"10.30799/jnst.277.19050502","DOIUrl":"https://doi.org/10.30799/jnst.277.19050502","url":null,"abstract":"Biosynthesis of nanoparticle from various medicinal plants has been effectively used in controlling the various diseases. Secondary metabolites which are derived from various plant parts such as leaves, stems, roots, shoots, flowers, barks and seeds through extraction used as reducing agents for bioreduction reaction. The secondary metabolites present in the plants such as terpenoids, flavones, ketones, aldehydes, alkaloids, tannins, phenolics and saponins used in the biological synthesis of nanoparticles which are a less toxic and non-hazardous method as compare to the other physical and chemical biosynthesis. Various metals such as cobalt, copper, silver, gold, palladium, platinum, zinc oxide and magnetite are used for nanoparticle synthesis. There are different techniques which are used to characterize nanoparticles such as UV-visible (vis) spectrophotometer, dynamic light scattering (DLS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS) and Fourier transform infrared spectrometer (FTIR). Plant derived nanoparticles shows various pharmacological applications such as anti-bactericidal activities, anti-fungicidal activities, antiplasmodial activity, anti-inflammatory action, anticancer studies, antiviral effects, antidiabetic and antioxidant activities.","PeriodicalId":187599,"journal":{"name":"Journal of Nanoscience and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122258055","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

Physical Properties and Light Energy Harvesting Efficiency of Silica Nanoparticles 二氧化硅纳米颗粒的物理性质及光能收集效率

Journal of Nanoscience and Technology Pub Date : 2019-08-25 DOI: 10.30799/jnst.279.19050501

Ajay Kumar, Mansingh, D. Mondal, Smritilekha Bera

引用次数: 0

Defect Analysis and Testing of Low Power Nanoscale Reversible Decoder using Quantum Dot Cellular Automata 基于量子点元胞自动机的低功耗纳米级可逆解码器缺陷分析与测试

Journal of Nanoscience and Technology Pub Date : 2019-05-30 DOI: 10.30799/JNST.234.19050213

M. Gupta, J. Bhatt, Ruchi, R. Ameta, S. Ameta

引用次数: 0

Study on Structural and Optical Properties of Ni and Mn Codoped TiO2 Nanomaterials and Its Application in Visible Light Photocatalytic Activity of Indigo Caramine Dye Ni和Mn共掺杂TiO2纳米材料的结构和光学性质及其在靛蓝焦胺染料可见光催化活性中的应用研究

Journal of Nanoscience and Technology Pub Date : 2019-05-20 DOI: 10.30799/JNST.239.19050209

Sankara Rao Miditana, T. Rao, S. A. Alim

{"title":"Study on Structural and Optical Properties of Ni and Mn Codoped TiO2 Nanomaterials and Its Application in Visible Light Photocatalytic Activity of Indigo Caramine Dye","authors":"Sankara Rao Miditana, T. Rao, S. A. Alim","doi":"10.30799/JNST.239.19050209","DOIUrl":"https://doi.org/10.30799/JNST.239.19050209","url":null,"abstract":"Article history: Received 20 April 2019 Accepted 06 May 2019 Available online 16 May 2019 To enhance the photocatalytic activity of TiO2 in visible light, nickel and manganese codoped TiO2 (NMTs) and undoped TiO2 nanomaterials were synthesized by varying dopant concentrations using a solgel method. As prepared nano materials were characterized by using X-ray diffraction (XRD) and its results shows anatase and rutile mixed phase was observed for codoped catalyst samples. Rough morphology, irregular particle shape and elemental composition of catalyst were identified with scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) respectively. The Fourier transform infrared spectroscopy (FT-IR) result revealed that the substitutional doping of Mn2+ and Ni2+ into TiO2 lattice by replacing Ti4+ in TiO2 lattice. This was confirmed by shifting of stretching frequencies of Ti-O-Ti from 569 cm-1 – 608 cm-1. The catalyst (NMT2) exhibits least band gap ( 2.7 eV), less particle size (6.5 nm) with high surface area (135.70 m2/g) when compared to undoped TiO2 (3.2 ev, 18.3 nm, 64.09 m2/g), which were determined by UV-visible diffused reflectance spectroscopy (UV Vis-DRS), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) respectively. Based on the characterization results the efficiency of codoped catalyst were exhibits better photocatalytic degradation of indigo caramine (IC). The results show that IC has degraded within 90 minutes at doping concentrations 1.0 wt% of Ni2+ ion and 0.25 wt% of Mn2+ ion in TiO2 (NMT2) at an optimum reaction parameter pH-3, catalyst dosage 0.080 g/L and at IC dye concentration of 0.020 g/L.","PeriodicalId":187599,"journal":{"name":"Journal of Nanoscience and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125796878","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

Defect Analysis and Testing of Low Power Nanoscale Reversible Decoder using Quantum Dot Cellular Automata 基于量子点元胞自动机的低功耗纳米级可逆解码器缺陷分析与测试

Journal of Nanoscience and Technology Pub Date : 2019-05-20 DOI: 10.30799/JNST.237.19050212

R. Jayalakshmi, M. Kumaran

引用次数: 0

Effect of Rotational Speed on Linear and Non-Linear Optical Properties of Sol-Gel Spin Coated Nanostructured CdS Thin Films 转速对溶胶-凝胶自旋涂覆纳米结构CdS薄膜线性和非线性光学性质的影响

Journal of Nanoscience and Technology Pub Date : 2019-05-20 DOI: 10.30799/JNST.238.19050210

M. Prasad, K. Thyagarajan, B. Kumar

{"title":"Effect of Rotational Speed on Linear and Non-Linear Optical Properties of Sol-Gel Spin Coated Nanostructured CdS Thin Films","authors":"M. Prasad, K. Thyagarajan, B. Kumar","doi":"10.30799/JNST.238.19050210","DOIUrl":"https://doi.org/10.30799/JNST.238.19050210","url":null,"abstract":"Article history: Received 20 April 2019 Accepted 06 May 2019 Available online 18 May 2019 Cadmium sulfide thin films have been prepared by sol-gel spin coating method on glass substrates at different rotational speeds. Glancing angle X-ray diffraction patterns of CdS thin films exhibit cubic phase with (1 1 1) as preferential orientation. The surface morphology of the CdS thin films was studied by atomic force microscope. The electrical resistivity of CdS thin films decreased from 5.66 × 103 to 1.72 × 103 Ω.cm with the increase of rotational speed from 1500 to 3000 rpm. The optical transmittance of CdS thin films increased because of reduction in film thickness with the increase of rotational speed. The optical band gap of CdS thin films decreased from 2.65 to 2.46 eV with the increase of rotational speed due to quantum confinement effect. The normal dispersion of refractive index for CdS thin films is described using Wemple-DiDomenico single-oscillator model. The optical dispersion parameters such as single-oscillator energy (Eo), the dispersion energy (Ed) and the static refractive index no were calculated. The Verdet coefficient (V) is determined based on the refractive index dispersion study. The first and third order nonlinear optical susceptibility (χ(1), χ(3)), nonlinear refractive index (n2) are determined for CdS thin films.","PeriodicalId":187599,"journal":{"name":"Journal of Nanoscience and Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124128669","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

Green Synthesis of Silver Nanoparticles for Various Biomedical and Agro Industrial Application 用于生物医学和农业工业的纳米银的绿色合成

Journal of Nanoscience and Technology Pub Date : 2019-05-20 DOI: 10.30799/JNST.233.19050211

Abaysew Ayele, Rita S. Mujmdar, Tesfaye Addisu, Y. Woinue

{"title":"Green Synthesis of Silver Nanoparticles for Various Biomedical and Agro Industrial Application","authors":"Abaysew Ayele, Rita S. Mujmdar, Tesfaye Addisu, Y. Woinue","doi":"10.30799/JNST.233.19050211","DOIUrl":"https://doi.org/10.30799/JNST.233.19050211","url":null,"abstract":"Silver nanomaterials have been integrated into industrial, biomedical and agricultural application, including biosensor, anti-microbial, anti-tumor, drug delivery, waste treatment, coated fabrics and nano fertilizer. Nanoparticle possesses unusual character due to their large surface area to volume ratio and an extraordinary catalytic activity, electronic properties, optical properties and anti-microbial activity while they are constructed in atomic level. The unique and major task in the synthesis of nanoparticle is choosing of an advanced and ecofriendly method. Nevertheless, physical and chemical methods of synthesis of nanoparticles are too expensive and environmentally unsound. In this study, the green synthesis of nanoparticle’s production methods was evaluated on the basis of variable literatures. Currently, there is a better possibility of using green synthesis of silver nanoparticles, especially a plant, bacterial and fungal production of nanoparticles which is emerging as a novel ecofriendly technique. The growth rate of bacterial culture, the extract of plant secondary metabolite and mycelial surface area of fungus are the main comprehensible mechanism in green synthesis of silver nanoparticles. The silver nanoparticles, which are produced through green biosynthesis is safe and hold a better possibility to be administered for medical and agricultural usages. Over all we found that the fungal green biosynthesis of silver nanoparticles is considered more preferable and is excellently chosen in it in industrial level production.","PeriodicalId":187599,"journal":{"name":"Journal of Nanoscience and Technology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131089799","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

Analysis of Mechanical Parameters of Zinc Oxide Nanoparticles using Williamson–Hall Method 用Williamson-Hall法分析氧化锌纳米颗粒力学参数

Journal of Nanoscience and Technology Pub Date : 2019-05-06 DOI: 10.30799/JNST.225.19050205

Nidhi, S. Dubey, Arpita Mathur, B. P. Singh, Devendra Kumar

引用次数: 2

Reduced Graphene Oxide/CuS Nanocomposite: An Efficient Photocatalyst for Degradation of Crystal Violet 还原氧化石墨烯/ cu纳米复合材料:一种降解结晶紫的高效光催化剂

Journal of Nanoscience and Technology Pub Date : 2019-05-06 DOI: 10.30799/JNST.210.19050207

Ruchi, A. Rai, M. Gupta, R. Ameta, S. Ameta

引用次数: 8