Green synthesis of silver nanoparticles from marigold flower and its synergistic antimicrobial potential
Green synthesis of silver nanoparticles from marigold flower and its synergistic antimicrobial potential
... (mm) (B) (mm) 738 Silver nanoparticles of marigold flower and its synergistic antimicrobial potential Table 3A 739 Synergistic activity of AgNPs of T erecta flower with different standard antibiotics ... Laurencin, C.T., 2007 Silver nanoparticles: synthesis and therapeutic applications J Biomed Nanotechnol 3, 301–316 Silver nanoparticles of marigold flower and its synergistic antimicrobial potential Niraimathi, ... different parts of plant extracts are ecofriendly, economical and safe for the synthesis of nanoparticles Use of flower extract for synthesis of nanoparticles has an added advantage of environmental...
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Research ArticleGreen Synthesis of Silver Nanoparticles UsingPolyalthia longifoliaLeaf Extract along with D-Sorbitol:StudyofAntibacterialActivity
... and 10−4 M silver nitrate (AgNO3 ) and 10−2 M of D-sorbitol was prepared and used for the synthesis of silver nanoparticles mL of extract and mL of D-sorbitol were added to 40 mL of AgNO3 solution ... effect of temperature on the synthesis of silver nanoparticles was carried out at room temperature (25◦ C) and 60◦ C The silver nanoparticles synthesized using Polyalthia longifolia leaf extract ... rapid green synthesis of silver and gold nanoparticles, ” Spectrochimica Acta Part A, vol 78, no 2, pp 899–904, 2011 R Veerasamy, T Z Xin, S Gunasagaran et al., “Biosynthesis of silver nanoparticles...
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Green synthesis of copper nanoparticles colloidal solutions and used as pink disease treatment drug for rubber tree
... average size of copper nanoparticles was about 6nm via TEM images This colloidal solution was used as anti Pink Disease drug for rubber tree at low concentration (dose of resistance fungus of about ... method This colloidal solution was used as anti Pink Disease drug for rubber tree at low concentration (dose of resistance fungus of about 5-7ppm (Fig.6) and dose of kill fungus of about 10ppm ... stable for over months The stabilization of copper colloidal solutions were due to the capping of nanoparticles by PVP 55,000 in reaction process The 5th sample were testing to treatment Pink disease...
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synthesis of pd or pt titanate nanotube and its application
... 300 ◦ C The curves of Pt and Pd/ titanate nanotubes were almost identical Fig TEM images of (a) Pd/ titanate and (b) Pt/ titanate nanotubes 324 C.-H Han et al / Sensors and Actuators B 128 (2007) ... Sensors and Actuators B 128 (2007) 320–325 images of Pd and Pt/ titanate nanotubes Another reason for the enhanced response of sensor (a) may be due to better adsorption of hydrogen on the titanate ... with Pd and Pt/ titanate nanotubes shows better response than the sensors fabricated with TiO2 nanoparticles or titanate nanotubes The enhanced sensitivity of the Pd and Pt/ titanate nanotube sensor...
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Facile synthesis of leaf like Cu(OH)2 and its conversion into cuo with nanopores
... assemblies, (b) with 20 sonication, (c) an individual leaf- like particle, (d) HRTEM image of the single particle in (c), (e) its corresponding SAED pattern, and (f) CuO microleaves with nanopores The ... we also demonstrated that leaf- like CuO products with nanopores can be simply obtained by the dehydration of Cu(OH)2 It is expected that the novel CuO architectures may offer exciting opportunities ... component was Cu(OH)2 A conspicuous feature of the Cu(OH)2 crystals is their broadness, which indicates the small size of the Cu(OH)2 crystals Fig.4(b−f) presents the XRD patterns of the products...
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Báo cáo khoa hoc:" Biomedical potential of silver nanoparticles synthesized from calli cells of Citrullus colocynthis (L.) Schrad" docx
... doi:10.1186/1477-3155-9-43 Cite this article as: K et al.: Biomedical potential of silver nanoparticles synthesized from calli cells of Citrullus colocynthis (L.) Schrad Journal of Nanobiotechnology 2011 9:43 Submit ... pathogens [14] Therefore the present study, we evaluated, biomedical potential of silver nanopaticles synthesized from calli extract of Citrullus colocynthis on Human epidermoid larynx carcinoma (HEp ... atmosphere for the attachment of cells to bottom of the wells Cell Treatment with silver nanoparticles The amount of different concentrations of stabilized silver nanoparticles was added to each...
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facile large scale synthesis of ws2 nanotubes from wo3 nanorods prepared by a hydrothermal route
... mesolamellar precursors resulted in WO3 nanorods in large quantity [26] Recently, the synthesis of WO3 nanorods at a large scale [27] has been described by the oxidation of W(CO)6 with an amine ... in gram quantities by a simple hydrothermal method WO3 nanorods were reduced with H2 S to obtain a very high yield of multiwalled WS2 nanotubes Experimental 2.1 Synthesis of WO3 nanorods An aqueous ... Conversion of WO3 nanorods to WS2 nanotubes An alumina crucible containing WO3 nanorods was placed in a tubular furnace and heated up to 840 ◦ C in Ar gas flow, then switched to H2 S gas for 30 at 840...
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Báo cáo hóa học: " A truly green synthesis of a-aminonitriles via Strecker reaction" pdf
... enantioselective Strecker reactions and analogous syntheses Chem Rev 103:2795–2827 doi:10.1021/cr020038p Arasappan A, Venkatraman S, Padilla AI, Wu W, Meng T, Jin Y, Wong J, Prongay A, Girijavallabhan V, ... GKS, Mathew T, Panja C, Alconcel S, Vaghoo H, Do C, Olah GA (2007) Gallium (III) triflate catalyzed efficient Strecker reaction of ketones and their fluorinated analogs Proc Nat Acad Sci USA 104:3703–3706 ... G, Zhao G, Wang J (2009) Strecker- type reaction catalyzed by carboxylic acids in aqueous media Synthesis 12:2035–2039 29 Ishitani H, Komiyama S, Hasegawa Y, Kobayashi S (2000) Catalytic asymmetric...
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báo cáo hóa học: " Structural and thermal studies of silver nanoparticles and electrical transport study of their thin films" pdf
... al.: Structural and thermal studies of silver nanoparticles and electrical transport study of their thin films Nanoscale Research Letters 2011 6:434 Submit your manuscript to a journal and benefit ... http://www.nanoscalereslett.com/content/6/1/434 Page of A B Figure FETEM and HRTEM images of silver nanoparticles (a) FETEM image of silver nanoparticles (b) High-resolution image of a single silver nanoparticle and inset shows ... method for the preparation of silver nanoparticles and their thin films is simple, convenient, and viable which allows nanocrystalline silver particles of spherical shape and almost narrow size distribution...
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Báo cáo hóa học: " Aqueous-Phase Synthesis of Silver Nanodiscs and Nanorods in Methyl Cellulose Matrix: Photophysical Study and Simulation of UV–Vis Extinction Spectra Using DDA Method" docx
... resonance (transverse) of silver nanorods Simulation of UV–vis Extinction Spectra Using DDA Method We carry out the analytical calculations for SPR transition of silver nanosphere using the modified ... above seeding growth approach Our present simulation of extinction spectra using DDA calculation suggests the potentiality of DDA methodology while calculating the extinction spectra of anisotropically ... ratio of our synthesized silver nanorods is in the range from to Accordingly, we simulate the extinction spectra of nanorod using aspect ratio 3, 4, and and the simulated spectra are shown in Fig...
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Báo cáo hóa học: " Assembly of Silver Nanoparticles into Hollow Spheres Using Eu(III) Compound based on Trifluorothenoyl-Acetone" doc
... plasmon resonant absorption of 123 silver nanoparticles as shown in curve B of Fig 2, suggesting that the silver hollow spheres consisted of silver nanoparticles The surface plasmon resonant ... surface image of silver hollow spheres (b) The SNOM transmittance image of silver hollow spheres Fig (a) SEM images of the silver hollow spheres and (b) HRFSEM images of the silver hollow spheres 123 ... absorption of silver nanoparticles The result further confirms that the silver hollow spheres shown in Fig 3a are attributed to the silver nanoparticles assembling The surface properties of silver hollow...
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Báo cáo hóa học: " Lactobacillus assisted synthesis of titanium nanoparticles" pptx
... importance of titanium and environmental issues related to the production of nanopowders, the present work reports an eco-friendly biotechnological approach for the synthesis (lactobacillus assisted) of ... particle size is estimated to be of the order of 40 nm The criterion adopted for evaluating the rightness, reliability of the indexing and the P P structure of titanium was Dd = (dobs–dcalc)] ... and hc = 25.45 The value of regression coefficient (r2) was found to be 0.9917 Figure shows the TEM micrograph at 200 nm of the titanium nanoparticles being formed using lactobacillus strain The...
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Báo cáo lâm nghiệp: "Climatic signal in annual growth variation of silver fir (Abies alba Mill.) and spruce (Picea abies Karst.) from the French Permanent Plot Network (RENECOFOR)" ppsx
... conditions were investigated in 11 natural mature silver fir and Norway spruce forests of the French Permanent Plot Network for the Monitoring of Forest Ecosystems network (RENECOFOR) The ecological ... Rolland C., Desplanque C., Michalet R., Schweingruber F.H., Extreme tree rings in (spruce Picea abies [L.] Karst.) and fir (Abies alba Mill.) stands in relation to climate, site and space in the ... occurred in 1977, 1969 and 1955 for Abies alba and in 1963 for Picea abies There were many points of agreement between these pointer years and monthly minimum temperature and annual water stress intensity...
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báo cáo khoa học: "Interaction of silver nanoparticles with HIV-1" pdf
... PVPcoated silver nanoparticles g) HAADF image of BSA-coated silver nanoparticles h) Size distribution of BSA-coated nanoparticles measured by TEM analysis i) UV-Visible spectrum of BSA-coated silver nanoparticles ... spectrum of carbon-coated silver nanoparticles d) HAADF image of PVP-coated silver nanoparticles e) Size distribution of PVP-coated nanoparticles measured by TEM analysis f) UV-Visible spectrum of ... assigned to the out-ofplane dipole resonance of the silver nanoparticles indicating the presence of spherical particles with small diameters In addition, the synthesis of silver nanoparticles by...
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báo cáo khoa học: "Mechanistic aspects of biosynthesis of silver nanoparticles by several Fusarium oxysporum strains" pps
... synthesis of silver nanoparticles by a silver- tolerant yeast strain MKY3 Nanotechnology 2003, 14:95-100 Souza GIH, Marcato PD, Durán N, Esposito E: Utilization of Fusarium oxysporum in the biosynthesis ... gold nanoparticles by the fungus Fusarium oxysporum Chem Biochem 2002, 3:461-463 Ahmad A, Mukherjee P, Senapati S, Mandal D, Khan MI, Kumar R, Sastry M: Extracellular biosynthesis of silver nanoparticles ... http://www.jnanobiotechnology.com/content/3/1/8 Figure Hypothetical mechanisms of silver nanoparticles biosynthesis Hypothetical mechanisms of silver nanoparticles biosynthesis and Molecular Biology Laboratory-Piracicaba,...
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