Pub Date : 2017-08-22DOI: 10.4172/2324-8777.1000223
P. Meena, R. Ch, Prajapat, Ramvir Singh, I. Jain, V. K. Sharma
Nanostructured materials have extensive variety of applications owing to their nanosize dependent physicochemical properties. A greener production of Copper oxide (CuO) nanoparticles without spending toxic and expensive organic solvents have been demonstrated by mean of Aloe-vera leaf extract compared with CuO synthesized by chemical mean. The amorphous characteristics, nanosize particles (~15 nm) and particular monoclinic phase of CuO, confirmed by XRD has been achieved by greener synthesis. Transmission Electron Microscope (TEM) revealed the spherical shape with uniform distribution of as-synthesized nanoparticles. Further, vibrational band at 473 cm-1and 624 cm-1in Fourier Transform Infrared Spectroscopy (FTIR) confirms the CuO and Cu2O oxides formation respectively. The CuO nanoparticles synthesized by Aloe-vera leaves exhibited 50 % higher thermal conductivity as compared to chemically synthesized CuO nanoparticles. This approach for the synthesis of CuO nanoparticles could be beneficial for various application because of it easy, eco-friendly and cost-effective synthesis procedure.
{"title":"Highly Thermal Conductive CuO Nanoparticle Synthesis Using Aloe-vera Leaf Extract","authors":"P. Meena, R. Ch, Prajapat, Ramvir Singh, I. Jain, V. K. Sharma","doi":"10.4172/2324-8777.1000223","DOIUrl":"https://doi.org/10.4172/2324-8777.1000223","url":null,"abstract":"Nanostructured materials have extensive variety of applications owing to their nanosize dependent physicochemical properties. A greener production of Copper oxide (CuO) nanoparticles without spending toxic and expensive organic solvents have been demonstrated by mean of Aloe-vera leaf extract compared with CuO synthesized by chemical mean. The amorphous characteristics, nanosize particles (~15 nm) and particular monoclinic phase of CuO, confirmed by XRD has been achieved by greener synthesis. Transmission Electron Microscope (TEM) revealed the spherical shape with uniform distribution of as-synthesized nanoparticles. Further, vibrational band at 473 cm-1and 624 cm-1in Fourier Transform Infrared Spectroscopy (FTIR) confirms the CuO and Cu2O oxides formation respectively. The CuO nanoparticles synthesized by Aloe-vera leaves exhibited 50 % higher thermal conductivity as compared to chemically synthesized CuO nanoparticles. This approach for the synthesis of CuO nanoparticles could be beneficial for various application because of it easy, eco-friendly and cost-effective synthesis procedure.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73541757","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 : 2017-08-16DOI: 10.4172/2324-8777.1000222
M. Algethami, A. Blencowe, B. Feltis, M. Geso
Background: Investigation of the contrast enhancement effects on the CT images of the conventional iodinated contrast media (CM) or bismuth sulfide nanoparticles (Bi2S3 NPs) with increasing x-ray tube potentials. Materials and methods: A phantom was filled with iodinated CM or Bi2S3 NP solutions at concentrations ranging from 0 to 65 mM and the phantom was scanned with a CT scanner using tube potentials of 80, 100, 120 and 140 kVp at a fixed current of 200 mA. The CT contrast enhancement and contrast-to-noise ratios (CNR) of all scanned images were calculated. Results: This study demonstrated that greater image contrast was observed with Bi2S3 NPs compared to the iodinated CM at all concentrations and energies (80-140 kVp) tested. For example, at a concentration of 65 mM and tube potential of 140 kVp, a CNR enhancement of three to four times was observed for Bi2S3 NPs compared to iodinated CM. Even at a conventional tube potential of 80 KVp, one to two-fold increase in CNR was noted for Bi2S3 NPs. Results are also demonstrated that CNR increased with increasing concentration of Bi2S3 NPs at a fixed tube potential. Conclusion: These results highlight the effects of the different physical densities and atomic numbers of the two elements (I versus Bi), and their role in enhancing the probability of Compton scattering (CS) and photoelectric effects (PEs). As tube potential was increased, the CT numbers for both Bi2S3 NPs and iodinated CM decreased, consistent with a decrease in the probability of CS and PEs with increasing beam energy. However, the rate of decrease for iodinated CM was larger than Bi2S3 NPs. A good correlation was observed between the experimental results and the theoretical spectra based on linear attenuation coefficients .
{"title":"Bismuth Sulfide Nanoparticles as a Complement to Traditional Iodinated Contrast Agents at Various X-Ray Computed Tomography Tube Potentials","authors":"M. Algethami, A. Blencowe, B. Feltis, M. Geso","doi":"10.4172/2324-8777.1000222","DOIUrl":"https://doi.org/10.4172/2324-8777.1000222","url":null,"abstract":"Background: Investigation of the contrast enhancement effects on the CT images of the conventional iodinated contrast media (CM) or bismuth sulfide nanoparticles (Bi2S3 NPs) with increasing x-ray tube potentials. \u0000Materials and methods: A phantom was filled with iodinated CM or Bi2S3 NP solutions at concentrations ranging from 0 to 65 mM and the phantom was scanned with a CT scanner using tube potentials of 80, 100, 120 and 140 kVp at a fixed current of 200 mA. The CT contrast enhancement and contrast-to-noise ratios (CNR) of all scanned images were calculated. \u0000Results: This study demonstrated that greater image contrast was observed with Bi2S3 NPs compared to the iodinated CM at all concentrations and energies (80-140 kVp) tested. For example, at a concentration of 65 mM and tube potential of 140 kVp, a CNR enhancement of three to four times was observed for Bi2S3 NPs compared to iodinated CM. Even at a conventional tube potential of 80 KVp, one to two-fold increase in CNR was noted for Bi2S3 NPs. Results are also demonstrated that CNR increased with increasing concentration of Bi2S3 NPs at a fixed tube potential. \u0000Conclusion: These results highlight the effects of the different physical densities and atomic numbers of the two elements (I versus Bi), and their role in enhancing the probability of Compton scattering (CS) and photoelectric effects (PEs). As tube potential was increased, the CT numbers for both Bi2S3 NPs and iodinated CM decreased, consistent with a decrease in the probability of CS and PEs with increasing beam energy. However, the rate of decrease for iodinated CM was larger than Bi2S3 NPs. A good correlation was observed between the experimental results and the theoretical spectra based on linear attenuation coefficients .","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86017388","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 : 2017-06-09DOI: 10.4172/2324-8777.1000219
P. Reshma, Kh., A. Ashwini
Cerium Oxide Nanoparticles: Synthesis, Characterization and Study of Antimicrobial Activity Cerium an element in lanthanide series exhibit both oxidation state Ce3+ and Ce4+ and as ability to drastically adjust or to switch over its oxidation state easily. Cerium oxide nanoparticles with 20 - 100nm in diameter were synthesized via hydroxide mediated approach using surfactants. Different surfactants such as sodium dodecyl sulphate (SDS) and cetyl trimethyl ammonium bromide (CTAB) possess the ability to control the shape and size of cerium oxide nanoparticles synthesized by using cerium nitrate hexahydrate as the starting material via hydroxide mediated approach. Cerium oxide nanoparticles were coated using polyvinyl pyrrolidine (PVP) as the polymer. The structural and morphological studies of cerium oxide nanoparticles were characterized by scanning electron microscopy. The antibacterial activities of nanoceria were studied with respect to Gram positive bacteria and Gram negative bacteria by disc diffusion method.
{"title":"Cerium Oxide Nanoparticles: Synthesis, Characterization and Study of Antimicrobial Activity","authors":"P. Reshma, Kh., A. Ashwini","doi":"10.4172/2324-8777.1000219","DOIUrl":"https://doi.org/10.4172/2324-8777.1000219","url":null,"abstract":"Cerium Oxide Nanoparticles: Synthesis, Characterization and Study of Antimicrobial Activity \u0000Cerium an element in lanthanide series exhibit both oxidation state Ce3+ and Ce4+ and as ability to drastically adjust or to switch over its oxidation state easily. Cerium oxide nanoparticles with 20 - 100nm in diameter were synthesized via hydroxide mediated approach using surfactants. Different surfactants such as sodium dodecyl sulphate (SDS) and cetyl trimethyl ammonium bromide (CTAB) possess the ability to control the shape and size of cerium oxide nanoparticles synthesized by using cerium nitrate hexahydrate as the starting material via hydroxide mediated approach. Cerium oxide nanoparticles were coated using polyvinyl pyrrolidine (PVP) as the polymer. The structural and morphological studies of cerium oxide nanoparticles were characterized by scanning electron microscopy. The antibacterial activities of nanoceria were studied with respect to Gram positive bacteria and Gram negative bacteria by disc diffusion method.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83022527","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 : 2017-06-09DOI: 10.4172/2324-8777.1000220
N. Mukaratirwa-Muchanyereyi, Tinotenda Muchenje, Stephen Nyoni, Munyaradzi Shumba, M. Mupa, L. Gwatidzo, A. Rahman
Green Synthesis of Silver Nanoparticles Using Euphorbia Confinalis Stem Extract, Characterization and Evaluation of Antimicrobial Activity Silver nanoparticles were synthesized using Euphorbia Confinalis stem extract which is an eco-friendly and cost effective method compared to other synthesis protocols like chemical and physical methods. Euphorbia Confinalis which is used traditionally for therapeutic uses was responsible for capping and reducing silver ions to silver nanoparticles. Silver was of a particular interest for this process due to its evocative physical and chemical properties. The silver nanoparticles synthesized were quantified and characterized using visual examination of the color changes, UV-Visible spectroscopy, Scanning Electron Microscopy, Transmission Electron Microscopy, Dynamic Light Scattering and Fourier Transform Infrared spectroscopy. The antimicrobial activity of the synthesized nanoparticles was done by agar disc diffusion method tested against Escherichia coli (Gram-Negative) and Staphylococcus aureus (Gram-Positive). The synthesis of silver nanoparticles was confirmed by color change of AgNO3 to reddish brown upon addition of the Euphorbia Confinalis stem extract. The UV-Vis spectrum showed broad absorption band at 433nm corresponding to that of Surface Plasmon Resonance of silver nanoparticles. The FTIR analysis showed the presence of aromatic, aliphatic and amines and these observations suggested the presence and binding of organic compounds with silver nanoparticles.
{"title":"Green synthesis of silver nanoparticles using euphorbia confinalis stem extract, characterization and evaluation of antimicrobial activity","authors":"N. Mukaratirwa-Muchanyereyi, Tinotenda Muchenje, Stephen Nyoni, Munyaradzi Shumba, M. Mupa, L. Gwatidzo, A. Rahman","doi":"10.4172/2324-8777.1000220","DOIUrl":"https://doi.org/10.4172/2324-8777.1000220","url":null,"abstract":"Green Synthesis of Silver Nanoparticles Using Euphorbia Confinalis Stem Extract, Characterization and Evaluation of Antimicrobial Activity \u0000Silver nanoparticles were synthesized using Euphorbia Confinalis stem extract which is an eco-friendly and cost effective method compared to other synthesis protocols like chemical and physical methods. Euphorbia Confinalis which is used traditionally for therapeutic uses was responsible for capping and reducing silver ions to silver nanoparticles. Silver was of a particular interest for this process due to its evocative physical and chemical properties. The silver nanoparticles synthesized were quantified and characterized using visual examination of the color changes, UV-Visible spectroscopy, Scanning Electron Microscopy, Transmission Electron Microscopy, Dynamic Light Scattering and Fourier Transform Infrared spectroscopy. The antimicrobial activity of the synthesized nanoparticles was done by agar disc diffusion method tested against Escherichia coli (Gram-Negative) and Staphylococcus aureus (Gram-Positive). The synthesis of silver nanoparticles was confirmed by color change of AgNO3 to reddish brown upon addition of the Euphorbia Confinalis stem extract. The UV-Vis spectrum showed broad absorption band at 433nm corresponding to that of Surface Plasmon Resonance of silver nanoparticles. The FTIR analysis showed the presence of aromatic, aliphatic and amines and these observations suggested the presence and binding of organic compounds with silver nanoparticles.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75523069","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 : 2017-06-09DOI: 10.4172/2324-8777.1000109e
A. Heidari
Received: May 24, 2017 Accepted: May 25, 2017 Published: May 30, 2017 Our main objective is to develop strategies to exploit the photo-, electro-, and thermal-chemical reactions of these systems to severe as probes to aid in our basic understanding of the mechanistic factors that control molecular interactions and organic reactions at organized monolayer interfaces. Also, the development of new and selective ways of adding or removing functionality to these monolayers is another part of our ongoing efforts. In the present editorial, we have synthesized Au144-xAgx/xCux[(SR)60, (SC4)60, (SC6)60, (SC12)60, (PET)60, (p-MBA)60, (F)60, (Cl)60, (Br)60, (I)60, (At)60, (Uus)60 and (SC6H13)60] Nano clusters as anti-cancer Nano drugs and incorporated them onto the surface of gold nanoparticles through the place-exchange reaction. Then, the interfacial reactions of the anchored aldehyde terminus with various nucleophiles have been investigated in some details. Our preliminary results reveal an easy reaction of aldehyde terminus of the organic modified gold nanoparticle with the nucleophiles like aniline, leading to a covalent attachment of the nucleophilic species to the nanoparticle surface.
{"title":"Polymorphism in Nano-Sized Graphene Ligand-Induced Transformation of Au38-xAgx/xCux(SPh-tBu)24 to Au36-xAgx/xCux(SPh-tBu)24 (x=1-12) Nanomolecules for Synthesis of Au144-xAgx/xCux[(SR)60,(SC4)60, (SC6)60, (SC12)60,(PET)60, (p-MBA)60, (F)60, (Cl)60,(Br)60, (I)60, (At)60, (Uus)60 and (SC6H13)60] Nano","authors":"A. Heidari","doi":"10.4172/2324-8777.1000109e","DOIUrl":"https://doi.org/10.4172/2324-8777.1000109e","url":null,"abstract":"Received: May 24, 2017 Accepted: May 25, 2017 Published: May 30, 2017 Our main objective is to develop strategies to exploit the photo-, electro-, and thermal-chemical reactions of these systems to severe as probes to aid in our basic understanding of the mechanistic factors that control molecular interactions and organic reactions at organized monolayer interfaces. Also, the development of new and selective ways of adding or removing functionality to these monolayers is another part of our ongoing efforts. In the present editorial, we have synthesized Au144-xAgx/xCux[(SR)60, (SC4)60, (SC6)60, (SC12)60, (PET)60, (p-MBA)60, (F)60, (Cl)60, (Br)60, (I)60, (At)60, (Uus)60 and (SC6H13)60] Nano clusters as anti-cancer Nano drugs and incorporated them onto the surface of gold nanoparticles through the place-exchange reaction. Then, the interfacial reactions of the anchored aldehyde terminus with various nucleophiles have been investigated in some details. Our preliminary results reveal an easy reaction of aldehyde terminus of the organic modified gold nanoparticle with the nucleophiles like aniline, leading to a covalent attachment of the nucleophilic species to the nanoparticle surface.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78077424","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 : 2017-06-09DOI: 10.4172/2324-8777.1000217
Z. Becheva, T. Godjevargova
Preparation of Anti-Elastase Antibody Conjugated With Quantum Dots 710 Nm and Fluorescein Isothiocyanate for Immunoassay of Milk Somatic Cells A novel immunofluorescence microscopic method for a neutrophil and somatic cell count was developed by using anti-elastase antibody. Two different conjugates - anti-bovine neutrophil elastase antibody-fluorescein isothiocyanate conjugate and anti-bovine neutrophil elastase antibody-Quantum Dots 710nm conjugate were prepared. The coupling of Quantum Dots (QDs) and fluorescein isothiocyanate (FITC) to antibody has been demonstrated by comparison of ultraviolet absorption spectra and fluorescence spectra of conjugate and initial components. The activities of conjugates were measured by indirect ELISA at the same conditions. It was found that the sensitivity of the immunoassay with QDs-conjugate was higher than the sensitivity of the immunoassay with FITC-conjugate. The storage stability of antibovine neutrophil elastase antibody-QDs710nm conjugate and anti-bovine neutrophil elastase antibody-FITC conjugate was studied. The residual fluorescence intensity of anti-elastase antibody-QDs was 95% at 30th day, while the intensity of antielastase antibody-FITC conjugate was reduced to 60% at same day. The obtained conjugates were applied in real test with bovine milk somatic cells. The fluorescence imaging proved that QDs-conjugate has better fluorescence intensity than the FITCconjugate, and is more appropriate for determination of somatic cells in milk.
{"title":"Preparation of Anti-Elastase Antibody Conjugated With Quantum Dots 710 Nm and Fluorescein Isothiocyanate for Immunoassay of Milk Somatic Cells","authors":"Z. Becheva, T. Godjevargova","doi":"10.4172/2324-8777.1000217","DOIUrl":"https://doi.org/10.4172/2324-8777.1000217","url":null,"abstract":"Preparation of Anti-Elastase Antibody Conjugated With Quantum Dots 710 Nm and Fluorescein Isothiocyanate for Immunoassay of Milk Somatic Cells \u0000A novel immunofluorescence microscopic method for a neutrophil and somatic cell count was developed by using anti-elastase antibody. Two different conjugates - anti-bovine neutrophil elastase antibody-fluorescein isothiocyanate conjugate and anti-bovine neutrophil elastase antibody-Quantum Dots 710nm conjugate were prepared. The coupling of Quantum Dots (QDs) and fluorescein isothiocyanate (FITC) to antibody has been demonstrated by comparison of ultraviolet absorption spectra and fluorescence spectra of conjugate and initial components. The activities of conjugates were measured by indirect ELISA at the same conditions. It was found that the sensitivity of the immunoassay with QDs-conjugate was higher than the sensitivity of the immunoassay with FITC-conjugate. The storage stability of antibovine neutrophil elastase antibody-QDs710nm conjugate and anti-bovine neutrophil elastase antibody-FITC conjugate was studied. The residual fluorescence intensity of anti-elastase antibody-QDs was 95% at 30th day, while the intensity of antielastase antibody-FITC conjugate was reduced to 60% at same day. The obtained conjugates were applied in real test with bovine milk somatic cells. The fluorescence imaging proved that QDs-conjugate has better fluorescence intensity than the FITCconjugate, and is more appropriate for determination of somatic cells in milk.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75113481","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 : 2017-06-09DOI: 10.4172/2324-8777.1000221
Lihong Su, H. Gao, Ziao Zou, Yong Yang, Junjie Wu
A New Expander Mechanism of an Infrared Laser Based on Different Nanometre Quantum Dot Particles The traditional beam expander mechanism is derived from the Galilean and Kepler telescopes and the glass prism, which have been used for hundreds of years. Our experiments reveal that two different ITO quantum dots and NaYF4:Yb, Er nanometre particles mixed uniformly can be used to realize a Laser beam expander. The expander can be detected only by a CCD electronic camera. The expander of the infrared laser does not depend on a prism; it is a novel quantum mechanism. The mixed nanometre powder 0.2-1 mm-thickness wafer can expand the laser light spot by 2-4 times. Although the expanded laser light energy strength clearly decreases, it can still be detected well by the CCD camera. The new mechanism supplies a new possibility for improving infrared laser range radar finders, positioning, 3D processing and laser disc information storage.
{"title":"A New Expander Mechanism of an Infrared Laser Based on Different Nanometre Quantum Dot Particles","authors":"Lihong Su, H. Gao, Ziao Zou, Yong Yang, Junjie Wu","doi":"10.4172/2324-8777.1000221","DOIUrl":"https://doi.org/10.4172/2324-8777.1000221","url":null,"abstract":"A New Expander Mechanism of an Infrared Laser Based on Different Nanometre Quantum Dot Particles \u0000The traditional beam expander mechanism is derived from the Galilean and Kepler telescopes and the glass prism, which have been used for hundreds of years. Our experiments reveal that two different ITO quantum dots and NaYF4:Yb, Er nanometre particles mixed uniformly can be used to realize a Laser beam expander. The expander can be detected only by a CCD electronic camera. The expander of the infrared laser does not depend on a prism; it is a novel quantum mechanism. The mixed nanometre powder 0.2-1 mm-thickness wafer can expand the laser light spot by 2-4 times. Although the expanded laser light energy strength clearly decreases, it can still be detected well by the CCD camera. The new mechanism supplies a new possibility for improving infrared laser range radar finders, positioning, 3D processing and laser disc information storage.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79728023","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 : 2017-06-09DOI: 10.4172/2324-8777.1000218
I. Harsini, Faris Matalkah, P. Soroushian, Anagi M Balach, Ra
Robust, Carbon Nanotube/Polymer Nanolayered Composites with Enhanced Ductility and Strength A new class of robust, nanolayered, self-assembled composite was developed by sequential deposition of electrostatically dispersed negatively charged carbon nanotubes (CNT) (charges were introduced via polymer wrapping) and oppositely charged polyelectrolytes on a polyurethane scaffold and subsequent heating. Heat treatment allowed for the formation of amide bonds between carboxylic acid functionalities on CNT walls and amine groups of the polyelectrolyte resulting strong covalent bonded network (crosslinked) of self-assembled, nanolayered composite. This robust nanolayered composite demonstrated high tensile strength and enhanced ductility compared to that of original polyurethane scaffold. The self-assembled nanolayered composites, after complementary cross-linking steps, were found to provide a unique balance of strength and ductility, which surpassed those of conventional (micro-scale) composites.
{"title":"Robust, Carbon Nanotube/Polymer Nanolayered Composites with Enhanced Ductility and Strength","authors":"I. Harsini, Faris Matalkah, P. Soroushian, Anagi M Balach, Ra","doi":"10.4172/2324-8777.1000218","DOIUrl":"https://doi.org/10.4172/2324-8777.1000218","url":null,"abstract":"Robust, Carbon Nanotube/Polymer Nanolayered Composites with Enhanced Ductility and Strength \u0000A new class of robust, nanolayered, self-assembled composite was developed by sequential deposition of electrostatically dispersed negatively charged carbon nanotubes (CNT) (charges were introduced via polymer wrapping) and oppositely charged polyelectrolytes on a polyurethane scaffold and subsequent heating. Heat treatment allowed for the formation of amide bonds between carboxylic acid functionalities on CNT walls and amine groups of the polyelectrolyte resulting strong covalent bonded network (crosslinked) of self-assembled, nanolayered composite. This robust nanolayered composite demonstrated high tensile strength and enhanced ductility compared to that of original polyurethane scaffold. The self-assembled nanolayered composites, after complementary cross-linking steps, were found to provide a unique balance of strength and ductility, which surpassed those of conventional (micro-scale) composites.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74879194","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 : 2017-05-23DOI: 10.4172/2324-8777.1000211
K. Kaviyarasu, X. Fuku, L. Kotsedi, Manik, E. an, J. Kennedy, M. Maaza
Synthesis and Characterization Studies of Pb:Zr:/O2 Nanorods for Optoelectronic Applications In the present work, we have synthesized ZrO2 doped PbO2 nanocrystals were successfully prepared by hydrothermal method which is Zirconium nitrate hydrate (Zr(NO3)4.5H2O) and lead nitrate (Pb(NO3)2) were used as a precursor. In the experimental results show that the amount of Iodine (I) and the NaOH concentration plays a important roles in the formation of hexagonal defined amount of ethylene glycol at 900 °C within 21 hrs. In the physiochemical properties of Zr doped lead oxide nanorod were determined by using X-ray diffraction (XRD), ultraviolet–visible spectroscopy (UV-vis), Fourier Transform Infrared spectroscopy (FTIR) and Transmission electron microscope (TEM). In Zr doped Pb oxide nanorods were the highest photon activity under both UV and visible light irradiation.
{"title":"Synthesis and Characterization Studies of Pb:Zr:/O2 Nanorods for Optoelectronic Applications","authors":"K. Kaviyarasu, X. Fuku, L. Kotsedi, Manik, E. an, J. Kennedy, M. Maaza","doi":"10.4172/2324-8777.1000211","DOIUrl":"https://doi.org/10.4172/2324-8777.1000211","url":null,"abstract":"Synthesis and Characterization Studies of Pb:Zr:/O2 Nanorods for Optoelectronic Applications \u0000In the present work, we have synthesized ZrO2 doped PbO2 nanocrystals were successfully prepared by hydrothermal method which is Zirconium nitrate hydrate (Zr(NO3)4.5H2O) and lead nitrate (Pb(NO3)2) were used as a precursor. In the experimental results show that the amount of Iodine (I) and the NaOH concentration plays a important roles in the formation of hexagonal defined amount of ethylene glycol at 900 °C within 21 hrs. In the physiochemical properties of Zr doped lead oxide nanorod were determined by using X-ray diffraction (XRD), ultraviolet–visible spectroscopy (UV-vis), Fourier Transform Infrared spectroscopy (FTIR) and Transmission electron microscope (TEM). In Zr doped Pb oxide nanorods were the highest photon activity under both UV and visible light irradiation.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84992484","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 : 2017-05-23DOI: 10.4172/2324-8777.1000212
E. Ismail, M. Kenfouch, M. Dhlamini, S. Dube, M. Maaza
Green Biosynthesis of Rhodium Nanoparticles Via Aspalathus Linearis Natural Extract This contribution report on the bio-synthesis of Rhodium metallic nanoparticles (Rh NPs) synthesized for the 1st time by a completely green process using Aspalathus linearis natural plant extract as an effective bio-oxidizing/bio-reducing agent as well as a capping compound. Their morphological, structural and optical properties were investigated using various complementary surface/interface characterization techniques such as HR-TEM, HR-SEM, EDS, XRD, XPS, UV and ATR-FTIR spectroscopy. The results confirm the formation of quais - monodisperse spherical Rh NPs in the range of 0.8-1.6 nm.
{"title":"Green Biosynthesis of Rhodium Nanoparticles Via Aspalathus Linearis Natural Extract","authors":"E. Ismail, M. Kenfouch, M. Dhlamini, S. Dube, M. Maaza","doi":"10.4172/2324-8777.1000212","DOIUrl":"https://doi.org/10.4172/2324-8777.1000212","url":null,"abstract":"Green Biosynthesis of Rhodium Nanoparticles Via Aspalathus Linearis Natural Extract \u0000This contribution report on the bio-synthesis of Rhodium metallic nanoparticles (Rh NPs) synthesized for the 1st time by a completely green process using Aspalathus linearis natural plant extract as an effective bio-oxidizing/bio-reducing agent as well as a capping compound. Their morphological, structural and optical properties were investigated using various complementary surface/interface characterization techniques such as HR-TEM, HR-SEM, EDS, XRD, XPS, UV and ATR-FTIR spectroscopy. The results confirm the formation of quais - monodisperse spherical Rh NPs in the range of 0.8-1.6 nm.","PeriodicalId":16457,"journal":{"name":"Journal of Nanomaterials & Molecular Nanotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89109531","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}
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