Oladele O. Isiaka, A. G. Okikiola, Ogungbe Funto, Babarinde Opeyemi
The corn cobs for this work were sourced from farmland after threshing of maize and were prepared for chemical treatment. Both treated and untreated corn cobs were then pulverized and sieved to obtain 150 and 300 μm particle sizes respectively. The composites were developed by dispersing the particulates in unsaturated polyester resin followed by proper stirring and then poured into the mould. The developed composites were allowed to cure before they are stripped from the mould and allowed to further cured for 30 days after which mechanical and biodegradability tests were carried out on the samples. It was observed from the results that both treated and untreated particulate corn cobs improved the mechanical and biodegradability properties of the developed composites while 150 μm was the most suitable particle size for flexural properties and 300 μm was the most suitable for biodegradability property.
{"title":"Effect of Corn Cob Particulate on the Mechanical and Biodegradability Properties of Reinforced Polyester Composites","authors":"Oladele O. Isiaka, A. G. Okikiola, Ogungbe Funto, Babarinde Opeyemi","doi":"10.7726/AJMST.2015.1010","DOIUrl":"https://doi.org/10.7726/AJMST.2015.1010","url":null,"abstract":"The corn cobs for this work were sourced from farmland after threshing of maize and were prepared for chemical treatment. Both treated and untreated corn cobs were then pulverized and sieved to obtain 150 and 300 μm particle sizes respectively. The composites were developed by dispersing the particulates in unsaturated polyester resin followed by proper stirring and then poured into the mould. The developed composites were allowed to cure before they are stripped from the mould and allowed to further cured for 30 days after which mechanical and biodegradability tests were carried out on the samples. It was observed from the results that both treated and untreated particulate corn cobs improved the mechanical and biodegradability properties of the developed composites while 150 μm was the most suitable particle size for flexural properties and 300 μm was the most suitable for biodegradability property.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82310135","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}
Ni-Zn Ferrites samples were prepared by solid state reaction method by introducing Sn. Polycrystalline samples were molded following this combination Ni0.6-x/2Zn0.4-x/2SnxFe2O4 (0 ≤ x ≤0.2) and sintered at temperature 1325C for 180 minutes. The structural, magnetic and transport properties of various ferrite samples were studied with the Sn substitution. XRD patterns indicate that the synthesized ferrite compositions were of single phase cubic spinel without any trace of impurity. Lattice parameter of the samples was found to decrease with increasing Sn concentration in the system obeying Vegard’s law. Dielectric constant decreased with the increase of frequency which is rapid at lower and slower at higher frequencies. This is a normal dielectric behavior in most of the ferromagnetic materials, which follow Maxwell and Wagner prediction. With the increase of temperature, dielectric constant and dielectric loss tangent are observed to be increased. The AC electrical resistivity, measured as a function of temperature, decreases with the increase of temperature indicating the semiconducting nature of all the samples. The activation energy of the all samples were calculated from the plot of ln(/0) vs.1/T curve. The lower activation energies are associated with higher electrical conductivity.
{"title":"Analysis of Dielectric and Resistive Properties of Sn Substitution in Ni-Zn Ferrites Nanoparticles","authors":"A. Mahmud","doi":"10.7726/AJMST.2015.1009","DOIUrl":"https://doi.org/10.7726/AJMST.2015.1009","url":null,"abstract":"Ni-Zn Ferrites samples were prepared by solid state reaction method by introducing Sn. Polycrystalline samples were molded following this combination Ni0.6-x/2Zn0.4-x/2SnxFe2O4 (0 ≤ x ≤0.2) and sintered at temperature 1325C for 180 minutes. The structural, magnetic and transport properties of various ferrite samples were studied with the Sn substitution. XRD patterns indicate that the synthesized ferrite compositions were of single phase cubic spinel without any trace of impurity. Lattice parameter of the samples was found to decrease with increasing Sn concentration in the system obeying Vegard’s law. Dielectric constant decreased with the increase of frequency which is rapid at lower and slower at higher frequencies. This is a normal dielectric behavior in most of the ferromagnetic materials, which follow Maxwell and Wagner prediction. With the increase of temperature, dielectric constant and dielectric loss tangent are observed to be increased. The AC electrical resistivity, measured as a function of temperature, decreases with the increase of temperature indicating the semiconducting nature of all the samples. The activation energy of the all samples were calculated from the plot of ln(/0) vs.1/T curve. The lower activation energies are associated with higher electrical conductivity.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"319 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75267995","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}
{"title":"Review of Journal Bearing Materials and Current Trends","authors":"M. Babu, A. Krishna, K. Suman","doi":"10.7726/AJMST.2015.1006","DOIUrl":"https://doi.org/10.7726/AJMST.2015.1006","url":null,"abstract":"","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"2005 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86943823","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}
Optimization is a system through which superior results are acquired under assured conditions. The challenge of modern manufacturing industries is generally motivated on achieving high quality, high production rate and longer product life with slighter environmental influence. The selection of optimal cutting parameters is a vital concern for all machining processes in order to develop the quality of machining products and diminishes the machining costs. This research work illustrates on the optimization of metal removal rate in turning operation by analyzing the effects of cutting parameters and here Taguchi, ANOVA (Analysis of Variance) & fuzzy logic method are applied to interpret the effect of these parameters on metal removal rate. For investigation, AISI 1040 steel is considered as workpiece where HSS (High Speed Steel) has been used as cutting tool and spindle speed, feed rate & depth of cut have been considered as cutting parameters. The fuzzy optimization that exists in fuzzy modeling enhances this research work more technically sound and sophisticated.
{"title":"Optimization of Metal Removal Rate in Turning for AISI 1040 Steel using Taguchi and Fuzzy Logic","authors":"S. Hossain, R. Hassan, Md. Sajibul Alam Bhuyan","doi":"10.7726/AJMST.2015.1008","DOIUrl":"https://doi.org/10.7726/AJMST.2015.1008","url":null,"abstract":"Optimization is a system through which superior results are acquired under assured conditions. The challenge of modern manufacturing industries is generally motivated on achieving high quality, high production rate and longer product life with slighter environmental influence. The selection of optimal cutting parameters is a vital concern for all machining processes in order to develop the quality of machining products and diminishes the machining costs. This research work illustrates on the optimization of metal removal rate in turning operation by analyzing the effects of cutting parameters and here Taguchi, ANOVA (Analysis of Variance) & fuzzy logic method are applied to interpret the effect of these parameters on metal removal rate. For investigation, AISI 1040 steel is considered as workpiece where HSS (High Speed Steel) has been used as cutting tool and spindle speed, feed rate & depth of cut have been considered as cutting parameters. The fuzzy optimization that exists in fuzzy modeling enhances this research work more technically sound and sophisticated.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75409652","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}
Pub Date : 2014-10-01DOI: 10.5923/J.MATERIALS.20140405.01
J. Moreno, C. E. S. Junior
The surface oxidation of DSS 2205 duplex stainless steel was studied by X-ray photoelectron spectroscopy (XPS), for two different techniques witch were used to produce thin oxide layers on polished for measuring the concentration of oxide depends on the sputtering profile these duplex stainless steel samples. The experiments were performed in the temperature of 300°C with aging at 7000 hours e with growth of films obtained voltammetric curves (potentiostatically) of the samples in sulfuric acid (H2SO4-0.1M saturated) at low potential. The compositions of the modified oxidized surfaces were determined from the XPS survey scans, and the chemistry of selected elements from the higher-energy-resolution scans of the appropriate peaks. Various Iron/Chromium oxidized layers and various oxide thicknesses were observed and correlated with the temperature. It was found that all the techniques produced oxide layers with various traces of metallic components and with the maximum concentration of chromium oxide and iron oxide in layers close to the oxide layer/metal interface. Therefore this study showed results about the behavior of the DSS 2205 with higher and lower Cr content and that the annealing at 300°C for longer times (7000h) promotes the enrichment of iron oxide, and consequently the decrease in the chromium oxide content, in the oxide surface of both the DSS 2205.
{"title":"Study of the Variation of Chromium Oxide and Iron in Oxide Layer by XPS in DSS 2205 with Higher and Lower Chromium Content Due to Ageing for 7000 Hours at 300°C","authors":"J. Moreno, C. E. S. Junior","doi":"10.5923/J.MATERIALS.20140405.01","DOIUrl":"https://doi.org/10.5923/J.MATERIALS.20140405.01","url":null,"abstract":"The surface oxidation of DSS 2205 duplex stainless steel was studied by X-ray photoelectron spectroscopy (XPS), for two different techniques witch were used to produce thin oxide layers on polished for measuring the concentration of oxide depends on the sputtering profile these duplex stainless steel samples. The experiments were performed in the temperature of 300°C with aging at 7000 hours e with growth of films obtained voltammetric curves (potentiostatically) of the samples in sulfuric acid (H2SO4-0.1M saturated) at low potential. The compositions of the modified oxidized surfaces were determined from the XPS survey scans, and the chemistry of selected elements from the higher-energy-resolution scans of the appropriate peaks. Various Iron/Chromium oxidized layers and various oxide thicknesses were observed and correlated with the temperature. It was found that all the techniques produced oxide layers with various traces of metallic components and with the maximum concentration of chromium oxide and iron oxide in layers close to the oxide layer/metal interface. Therefore this study showed results about the behavior of the DSS 2205 with higher and lower Cr content and that the annealing at 300°C for longer times (7000h) promotes the enrichment of iron oxide, and consequently the decrease in the chromium oxide content, in the oxide surface of both the DSS 2205.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"57 1","pages":"185-189"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77125333","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}
Low dimensional structures of conducting polymers, particularly polypyrrole, have attracted a great attention of researchers and engineers in recent years because of their diverse potential application on account of their unique properties of large aspect ratio, good electrical conductivity, environmental stability and biocompatibility. The present work describes synthesis of polypyrolle microwires by template assisted chemical polymerization at room temperature using FeCl3 as an oxidant. In this technique, the track etch membrane used as a template was fitted between two chambers in a chemical cell in such a way that the template acts as a separating wall between the chambers. One chamber was filled with an aqueous monomer pyrrole solution and other was filled with oxidant reagent of ferric chloride. Chemical polymerization takes place within the pores of the template as the monomer and the oxidant reagent diffuse towards each other, react to yield the conductive polymer which grows as microstructure in the shape of pores of host template. Synthesized samples have been characterized by Scanning Electron Microscopy (SEM), which reveals that the morphology of the microwires matches with the morphology of pores as mould in host template. Diameter, orientation and direction of growth of microwires were almost uniform because of the confined growth of microwires in the ordered and symmetric pores of TEM template. Conductivity of polypyrrole microwires was estimated equal 20.152 S/m form current-voltage characteristics measured using a two-probe-method.
{"title":"Synthesis of Microwires of Polypyrrole via Chemical Polymerization using Track Etch Membrane as Template","authors":"R. Garg, D. Kumar, S. Chakarvarti","doi":"10.7726/AJMST.2014.1001","DOIUrl":"https://doi.org/10.7726/AJMST.2014.1001","url":null,"abstract":"Low dimensional structures of conducting polymers, particularly polypyrrole, have attracted a great attention of researchers and engineers in recent years because of their diverse potential application on account of their unique properties of large aspect ratio, good electrical conductivity, environmental stability and biocompatibility. The present work describes synthesis of polypyrolle microwires by template assisted chemical polymerization at room temperature using FeCl3 as an oxidant. In this technique, the track etch membrane used as a template was fitted between two chambers in a chemical cell in such a way that the template acts as a separating wall between the chambers. One chamber was filled with an aqueous monomer pyrrole solution and other was filled with oxidant reagent of ferric chloride. Chemical polymerization takes place within the pores of the template as the monomer and the oxidant reagent diffuse towards each other, react to yield the conductive polymer which grows as microstructure in the shape of pores of host template. Synthesized samples have been characterized by Scanning Electron Microscopy (SEM), which reveals that the morphology of the microwires matches with the morphology of pores as mould in host template. Diameter, orientation and direction of growth of microwires were almost uniform because of the confined growth of microwires in the ordered and symmetric pores of TEM template. Conductivity of polypyrrole microwires was estimated equal 20.152 S/m form current-voltage characteristics measured using a two-probe-method.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86054974","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}
Polyvinyl chloride, commonly abbreviated PVC is a rather hard and rigid material. In order to extend its use it requires additives during the manufacturing process which are referred to as plasticizers, among them the Dioctyl Phthalate (DOP). This latter has a tendency to escape from the PVC matrix specially when in contact with liquids. In order to analyse this phenomenon we use the classical equations of mass diffusion (Fick’s second law). However this method leads to results which are not always in good agreement with experimental ones, especially when the concentration of plasticisers is high. This situation requires the elaboration of an enhanced mathematical model that can deal with this particular type of forced diffusion characterized by the contact with a liquid and particular boundary conditions. The validation of the proposed model was obtained by comparing the theoretical results obtained with the model and those obtained by experiments.
{"title":"Enhanced Mathematical Modeling of DOP Plasticizer Migration from PVC into Liquid (Methanol)","authors":"M. Miloudi, A. Yala, M. Mokhtari","doi":"10.7726/AJMST.2014.1003","DOIUrl":"https://doi.org/10.7726/AJMST.2014.1003","url":null,"abstract":"Polyvinyl chloride, commonly abbreviated PVC is a rather hard and rigid material. In order to extend its use it requires additives during the manufacturing process which are referred to as plasticizers, among them the Dioctyl Phthalate (DOP). This latter has a tendency to escape from the PVC matrix specially when in contact with liquids. In order to analyse this phenomenon we use the classical equations of mass diffusion (Fick’s second law). However this method leads to results which are not always in good agreement with experimental ones, especially when the concentration of plasticisers is high. This situation requires the elaboration of an enhanced mathematical model that can deal with this particular type of forced diffusion characterized by the contact with a liquid and particular boundary conditions. The validation of the proposed model was obtained by comparing the theoretical results obtained with the model and those obtained by experiments.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86266258","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}
Pub Date : 2014-01-01DOI: 10.5923/j.materials.20140405.02
F. Mainier, P. Nunes, L. P. Gomes, A. Carlos
Oil storage tanks and derivatives must be evaluated by hydrostatic testing for leaks in sideways welds, possible cracks and failures that may have occurred during construction. Also in this test are observed defects and cracks in the concrete foundations that support the tank on the ground. The use of seawater as a fluid for hydrostatic testing in storage tank is economically attractive when the storage tanks are located near the sea. Due to its corrosive nature, seawater can cause damage to the internal surface of storage tanks. Generally, corrosion inhibitors and biocides are added to seawater in order to keep the corrosion rate under control. The disposal of water used in hydrostatic testing can represent an environmental problem whereas most corrosion inhibitors are toxic. Hydrostatic tests were run on bench scale tanks to investigate the efficiency of cathodic protection. These tests indicated that an aluminum anode (sacrificial anode) can efficiently replace corrosion inhibitors in storage tanks with the advantage that this corrosion protection system is not hazardous to the environment, as corrosion inhibitors can eventually be. The fixing of anodes in rubber floats and tubular modules represent a major innovation in the inner protection of tanks during the hydrostatic test with sea water.
{"title":"A Non-polluting Option Using Cathodic Protection for Hydrostatic Testing of Petroleum Tanks with Seawater","authors":"F. Mainier, P. Nunes, L. P. Gomes, A. Carlos","doi":"10.5923/j.materials.20140405.02","DOIUrl":"https://doi.org/10.5923/j.materials.20140405.02","url":null,"abstract":"Oil storage tanks and derivatives must be evaluated by hydrostatic testing for leaks in sideways welds, possible cracks and failures that may have occurred during construction. Also in this test are observed defects and cracks in the concrete foundations that support the tank on the ground. The use of seawater as a fluid for hydrostatic testing in storage tank is economically attractive when the storage tanks are located near the sea. Due to its corrosive nature, seawater can cause damage to the internal surface of storage tanks. Generally, corrosion inhibitors and biocides are added to seawater in order to keep the corrosion rate under control. The disposal of water used in hydrostatic testing can represent an environmental problem whereas most corrosion inhibitors are toxic. Hydrostatic tests were run on bench scale tanks to investigate the efficiency of cathodic protection. These tests indicated that an aluminum anode (sacrificial anode) can efficiently replace corrosion inhibitors in storage tanks with the advantage that this corrosion protection system is not hazardous to the environment, as corrosion inhibitors can eventually be. The fixing of anodes in rubber floats and tubular modules represent a major innovation in the inner protection of tanks during the hydrostatic test with sea water.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"5 1","pages":"190-193"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77628537","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}
Pub Date : 2014-01-01DOI: 10.5923/J.MATERIALS.20140402.03
A. Bello, D. Dodoo‐Arhin, Katlego Makgopa, M. Fabiane, N. Manyala
Three different copper oxide (CuO) leaf-like nanostructures have been synthesised by micelles micro emulsion method using a surfactant of copper dodecyl sulphate (Cu(DS)2) by varying the concentration of sodium hydroxide (NaOH). This study was carried out to investigate the effect of NaOH concentration on the stability, crystalline domain and pseudocapacitance behaviour of the leaf-like nanostructures. The samples were characterized by X-ray diffraction (XRD), thermogravimetry analysis (TGA), Raman spectroscopy, Fourier-Transform Infrared (FTIR), scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). It was observed that the crystalline domain size (12 nm-18 nm) and size distribution of the as-synthesized nanocrystals decreases with increasing concentration of NaOH. The interactions mechanism and formation of the leaf-like structure have been elucidated and correlated with various analytical techniques. The domain size and NaOH concentration tend to influence the charge transfer resistance.
{"title":"Surfactant Assisted Synthesis of Copper Oxide (CuO) Leaf-like Nanostructures for Electrochemical Applications","authors":"A. Bello, D. Dodoo‐Arhin, Katlego Makgopa, M. Fabiane, N. Manyala","doi":"10.5923/J.MATERIALS.20140402.03","DOIUrl":"https://doi.org/10.5923/J.MATERIALS.20140402.03","url":null,"abstract":"Three different copper oxide (CuO) leaf-like nanostructures have been synthesised by micelles micro emulsion method using a surfactant of copper dodecyl sulphate (Cu(DS)2) by varying the concentration of sodium hydroxide (NaOH). This study was carried out to investigate the effect of NaOH concentration on the stability, crystalline domain and pseudocapacitance behaviour of the leaf-like nanostructures. The samples were characterized by X-ray diffraction (XRD), thermogravimetry analysis (TGA), Raman spectroscopy, Fourier-Transform Infrared (FTIR), scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). It was observed that the crystalline domain size (12 nm-18 nm) and size distribution of the as-synthesized nanocrystals decreases with increasing concentration of NaOH. The interactions mechanism and formation of the leaf-like structure have been elucidated and correlated with various analytical techniques. The domain size and NaOH concentration tend to influence the charge transfer resistance.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"28 1","pages":"64-73"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83900657","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}
J. Dhiman, V. Kundu, Suresh Kumar, Ravi Kumar, S. Chakarvarti
Generally, most of the metallic nanoparticles have been synthesized using chemical techniques, where the chemicals used are generally toxic and combustible. Therefore there is a growing need to develop environment friendly synthesis techniques without using toxic chemicals. In this paper we present a simple and green/eco-friendly/chemical free biosynthesis of silver nanoparticles using Elettaria cardamom seed extract as reducing agents. The as synthesized nanoparticles were characterized by UV-vis absorbance spectroscopy, XRD and SEM measurements. The experimental study confirmed the formation of highly crystalline nanoparticles with uniform shape. Further, the antibacterial activity against the Bacillus subtilis was also evaluated for Elettaria cardamom seeds extract assisted silver nanoparticles and the later found to exhibit significant activity.
{"title":"Eco-friendly Synthesis and Characterization of Silver Nanoparticles and Evaluation of Their Antibacterial Activity","authors":"J. Dhiman, V. Kundu, Suresh Kumar, Ravi Kumar, S. Chakarvarti","doi":"10.7726/AJMST.2014.1002","DOIUrl":"https://doi.org/10.7726/AJMST.2014.1002","url":null,"abstract":"Generally, most of the metallic nanoparticles have been synthesized using chemical techniques, where the chemicals used are generally toxic and combustible. Therefore there is a growing need to develop environment friendly synthesis techniques without using toxic chemicals. In this paper we present a simple and green/eco-friendly/chemical free biosynthesis of silver nanoparticles using Elettaria cardamom seed extract as reducing agents. The as synthesized nanoparticles were characterized by UV-vis absorbance spectroscopy, XRD and SEM measurements. The experimental study confirmed the formation of highly crystalline nanoparticles with uniform shape. Further, the antibacterial activity against the Bacillus subtilis was also evaluated for Elettaria cardamom seeds extract assisted silver nanoparticles and the later found to exhibit significant activity.","PeriodicalId":7420,"journal":{"name":"American Journal of Materials Science","volume":"196 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74416597","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：