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International Journal of Green Nanotechnology最新文献

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Synthesis, Characterization, and Studies of PVA/Co-Doped ZnO Nanocomposite Films PVA/共掺杂ZnO纳米复合膜的合成、表征及研究
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.738509
Deepak Kumar, Suraj Karan Jat, P. Khanna, N. Vijayan, Shaibal Banerjee
{"title":"Synthesis, Characterization, and Studies of PVA/Co-Doped ZnO Nanocomposite Films","authors":"Deepak Kumar, Suraj Karan Jat, P. Khanna, N. Vijayan, Shaibal Banerjee","doi":"10.1080/19430892.2012.738509","DOIUrl":"https://doi.org/10.1080/19430892.2012.738509","url":null,"abstract":"ABSTRACT Polymer nanocomposites are made up of two or more phases wherein the inorganic particles are dispersed in a polymer matrix. The present article deals with Co-doped ZnO embedded in a polyvinyl alcohol (PVA) matrix using a sol-gel method. The synthesized nanocomposites were structurally characterized using X-ray diffraction (XRD) and the optical properties were studied using photoluminescence and ultraviolet-visible (UV-Vis) spectroscopy. Thermal studies including thermogravimetric analysis (TGA) were conducted to the study stability of the nanocomposites.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"163 1","pages":"408-416"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76175537","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: 48
Biosynthesis of Gold Nanoparticles Using Common Aromatic Plants 利用常见芳香植物生物合成纳米金
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.706070
A. K. Jha, K. Prasad
{"title":"Biosynthesis of Gold Nanoparticles Using Common Aromatic Plants","authors":"A. K. Jha, K. Prasad","doi":"10.1080/19430892.2012.706070","DOIUrl":"https://doi.org/10.1080/19430892.2012.706070","url":null,"abstract":"ABSTRACT A green, low-cost, and reproducible aromatic Mentha, Ocimum, and Eucalyptus plant's leaves negotiated synthesis of gold nanoparticles is reported. The synthesis was performed at room temperature. X-ray and transmission electron microscopy analyses were performed to ascertain the formation of gold nanoparticles. Nanoparticles, almost spherical in shape having a size of 3–16 nm, were found. The UV-visible study revealed the surface plasmon resonance at 539, 536, and 537 nm for gold nanoparticles synthesized using Mentha, Ocimum, and Eucalyptus leaf extracts, respectively. Results indicated that Ocimum leaf provided finer particles. The use of these plant's leaves for the synthesis of gold nanoparticles offers the benefit of eco-friendliness and amenability for large scale production through scaling–up, even by employing the candidate metabolites involvement.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"365 1","pages":"219-224"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74016703","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: 11
Synthesis of Stable Silver Nanoparticles Using Gum Acacia as Reducing and Stabilizing Agent and Study of Its Microbial Properties: A Novel Green Approach 以金合欢胶为还原剂和稳定剂合成稳定银纳米粒子及其微生物特性研究:一种新的绿色途径
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.705999
M. Venkatesham, D. Ayodhya, A. Madhusudhan, G. Veerabhadram
{"title":"Synthesis of Stable Silver Nanoparticles Using Gum Acacia as Reducing and Stabilizing Agent and Study of Its Microbial Properties: A Novel Green Approach","authors":"M. Venkatesham, D. Ayodhya, A. Madhusudhan, G. Veerabhadram","doi":"10.1080/19430892.2012.705999","DOIUrl":"https://doi.org/10.1080/19430892.2012.705999","url":null,"abstract":"ABSTRACT Stable silver nanoparticles have been synthesized by using gum acacia, a natural biopolymer as both reducing and stabilizing agent. This reaction is carried out in an autoclave at a pressure of 15 Psi and a temperature of 120°C, for two min. The influence of change in concentrations of silver nitrate and acacia gum was studied on the formation of silver nanoparticles. The synthesized silver nanoparticles were characterized by UV-Visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Transmission Electron Microscopy (TEM). The antimicrobial activity of silver nanoparticles was tested against E. coli and M. luteus and was found to possess inhibiting properties.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"26 1","pages":"199-206"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77359047","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: 55
Hydrophobic Propylsulfonic Acid Functionalized Nanostructured SBA-15: A Highly Reusable and Green Catalyst in the Solvent-Free Tetrahydropyranylation of Alcohols and Phenols 疏水丙磺酸功能化纳米结构SBA-15:一种高度可重复使用的绿色催化剂，用于醇和酚的无溶剂四氢吡喃化
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.738170
D. Zareyee, M. Khalilzadeh
{"title":"Hydrophobic Propylsulfonic Acid Functionalized Nanostructured SBA-15: A Highly Reusable and Green Catalyst in the Solvent-Free Tetrahydropyranylation of Alcohols and Phenols","authors":"D. Zareyee, M. Khalilzadeh","doi":"10.1080/19430892.2012.738170","DOIUrl":"https://doi.org/10.1080/19430892.2012.738170","url":null,"abstract":"ABSTRACT Catalytic amounts of environmentally friendly, hydrophobic, highly thermally stable, and completely heterogeneous propylsulfonic acid functionalized nanostructured SBA-15 has been proven to be an efficient and green catalyst for tetrahydropyranylation of a variety of alcohols and phenols in excellent yields in solvent-free conditions at room temperature. The absence of solvent, simple experimental procedure, easy recovery, and reusability of the catalyst (at least 7 reaction cycles) characterize the present procedure as a green method.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"24 1","pages":"289-295"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74627284","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
Application of Carbon Nanotubes for Removal of Fluoride from Wastewater 碳纳米管在废水除氟中的应用
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.738960
H. Atarodi, H. Faghihian, Masoume Kooravand
{"title":"Application of Carbon Nanotubes for Removal of Fluoride from Wastewater","authors":"H. Atarodi, H. Faghihian, Masoume Kooravand","doi":"10.1080/19430892.2012.738960","DOIUrl":"https://doi.org/10.1080/19430892.2012.738960","url":null,"abstract":"ABSTRACT In this study, a chemical vapor deposition method was used for synthesis of carbon nanotubes on kaolin substrates. The structure of the carbon nanotubes was studied using scanning electron microscopy. To examine the adsorption behavior of the carbon nanotubes, chemical surface treatment was carried out with nitric acid. The surface functional groups were determined according to Boehm titration. The point of zero charge (pHpzc) of the treated sample was measured by acid–base titration. The amount of fluoride adsorbed on the carbon nanotubes was determined using an ion-selective electrode.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"1 1","pages":"394-398"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91069781","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
Humidity Sensor Based on Nanostructured Ferric Oxide Thick Film 基于纳米结构氧化铁厚膜的湿度传感器
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.706021
R. Srivastava, Satyendra Singh, U. D. Misra, B. Yadav
{"title":"Humidity Sensor Based on Nanostructured Ferric Oxide Thick Film","authors":"R. Srivastava, Satyendra Singh, U. D. Misra, B. Yadav","doi":"10.1080/19430892.2012.706021","DOIUrl":"https://doi.org/10.1080/19430892.2012.706021","url":null,"abstract":"ABSTRACT The present paper reports the preparation of nanostructured ferric oxide film by screen printing method and their humidity sensing properties. Sensing material has been characterized by X-ray diffraction (XRD) and Scanning electron microscopy (SEM). XRD pattern revealed crystalline α-phase and rhombohedral crystal structure. SEM images show porous nature of sensing material throughout the surface. Nanocrystalline Fe2O3 thick film was prepared on borosilicate glass substrate by a screen printing method. The sensing film with silver contacts was put in the specially designed humidity chamber and the variations of resistance at different value of %RH of the sensing elements were measured. The average sensitivity was found 8.11 MΩ/%RH over the entire range of relative humidity. Results were found to be reproducible with 2% hysteresis.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"263 1","pages":"215-218"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76960681","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
Humidity Sensor: An Overview 湿度传感器概述
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.706001
R. Srivastava
{"title":"Humidity Sensor: An Overview","authors":"R. Srivastava","doi":"10.1080/19430892.2012.706001","DOIUrl":"https://doi.org/10.1080/19430892.2012.706001","url":null,"abstract":"ABSTRACT The present review provides a detailed introduction, properties, types, applications, uses, and requirements of a humidity sensor. Humidity affects mankind directly or indirectly. Therefore, there is an urgent need to precisely measure and control humidity in various environments. The role and various methods for measurement of humidity are included. The detailed working principle of a resistive type humidity sensor based on metal oxides is also explained.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"26 1","pages":"302-309"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90487320","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: 5
Application of DNA Graphs to Whole Genome Sequencing DNA图谱在全基因组测序中的应用
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.738158
N. Jafarzadeh, A. Iranmanesh
{"title":"Application of DNA Graphs to Whole Genome Sequencing","authors":"N. Jafarzadeh, A. Iranmanesh","doi":"10.1080/19430892.2012.738158","DOIUrl":"https://doi.org/10.1080/19430892.2012.738158","url":null,"abstract":"ABSTRACT DNA sequencing is one of the important problems in molecular biology. One particular way to analyze this method is by using concepts from graph theory. In this paper, we will discuss the properties of DNA graphs and their application to determining the whole DNA structure and then will propose a graph theoretical approach to whole genome sequencing by building DNA graphs.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"6 1","pages":"373-376"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82267778","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
Size-Controlled Green Synthesis of Silver Nanoparticles using Dual Functional Plant Leaf Extract at Room Temperature 室温下双功能植物叶提取物绿色合成纳米银颗粒的研究
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.706183
Y. L. Balachandran, P. Peranantham, R. Selvakumar, A. Gutleb, S. Girija
{"title":"Size-Controlled Green Synthesis of Silver Nanoparticles using Dual Functional Plant Leaf Extract at Room Temperature","authors":"Y. L. Balachandran, P. Peranantham, R. Selvakumar, A. Gutleb, S. Girija","doi":"10.1080/19430892.2012.706183","DOIUrl":"https://doi.org/10.1080/19430892.2012.706183","url":null,"abstract":"ABSTRACT A simple synthesis of size-controlled silver nanoparticles using plant leaf extract at room temperature is described in this report. The reaction of AgNO3 with the leaf extract of Azadirachta indica in different concentrations and different reaction pH yields silver nanoparticles with control over size and distribution. The sizes of the as-synthesized silver nanoparticles were in the range between 10 to 63 nm and the size of nanoparticles were attributed to the concentration of leaf extract and pH of the reaction solution. The as-synthesized silver nanoparticles showed an excellent level of stability in water, and the nanoparticles formed in solution between pH 7 and pH 10.5 were not only stable in water, but also in NaCl solution and in different pH. The nanoparticles were characterized using various techniques.","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"40 3","pages":"310-325"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91496974","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: 7
Synthesis and Physicochemical Characterization of pH- and Thermosensitive Nanopolymers Based on N-isopropylacrylamide Containing Doxorubicin Anti-Cancer Agent 含阿霉素抗癌剂n -异丙基丙烯酰胺的pH-热敏纳米聚合物的合成及理化表征
International Journal of Green Nanotechnology Pub Date : 2012-07-01 DOI: 10.1080/19430892.2012.738956
S. Davaran, Parisa Yazdi Mamaghani, B. Kaffashi
{"title":"Synthesis and Physicochemical Characterization of pH- and Thermosensitive Nanopolymers Based on N-isopropylacrylamide Containing Doxorubicin Anti-Cancer Agent","authors":"S. Davaran, Parisa Yazdi Mamaghani, B. Kaffashi","doi":"10.1080/19430892.2012.738956","DOIUrl":"https://doi.org/10.1080/19430892.2012.738956","url":null,"abstract":"ABSTRACT The aim of this research was to synthesize polymer-based smart nanocarriers for delivery of doxorubicin as an anti-cancer drug. For this purpose, smart polymers were prepared using N-isopropylacrylamide (NIPAAm), vinyl pyrrolidone (VP), and methacrylic acid (MAA) as monomers, which were cross-linked with N,N′-methylene bis-acrylamide (MBA) using a free radical polymerization method. Poly(N-isopropylacrylamide-co-vinylpyrrolidone-co-methacrylic acid) [P(NIPAAm-VP-MAA)] was prepared in different molar ratios and further characterized by its physicochemical properties using a particle size analyzer, Fourier transform infrared (FTIR), 1H-NMR, and differential scanning calorimetry (DSC). Particle size analysis showed an average size of 277 nm for 50% drug entrapment. Drug release from the nanoparticles was sustained for 21 days at 37°C. The same procedure was carried out to synthesize these smart polymers without a cross-linker. Particle size analysis showed an average size of 116 nm for ∼36% drug ent...","PeriodicalId":13985,"journal":{"name":"International Journal of Green Nanotechnology","volume":"70 1","pages":"389-393"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84097102","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
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