synthesis of silver nanocrystals 5 6

Báo cáo hóa học: " Effect of ion implantation energy for the synthesis of Ge nanocrystals in SiN films with HfO2/SiO2 stack tunnel dielectrics for memory application" pot

... memories Appl Phys Lett 2007, 90:22 350 4 doi:10.11 86/ 155 6- 276X -6- 177 Cite this article as: Sahu et al.: Effect of ion implantation energy for the synthesis of Ge nanocrystals in SiN films with HfO2/SiO2 ... in support of the quqntumconfinement mechanism Phys Rev B 19 95, 51 :1 65 8 Okamoto S, Kanemitsu Y: Photoluminescence properties of surfaceoxidized Ge nanocrystals; Surface localization of excitons ... 2011, 6: 177 http://www.nanoscalereslett.com/content /6/ 1/177 Page of well-isolated Ge-NCs with an average size of 3 .5 nm were self-assembled within the top Si3N4 layer at a distance of 5. 6 nm from...

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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

Danh mục: Hóa học - Dầu khí

... (2010) 5: 161 1– 161 8 60 50 40 30 20 10 2-2.9 3-3.9 4-4.9 5- 5.9 6- 6.9 Particle diameter (nm) (b) Particle distribution (%) 50 40 30 20 10 40.1- 45 45. 1 -50 50 .1 -55 55 .1 -60 60 .1- 65 Diameter of Ag nanodisks ... distribution of a silver seeds, b silver nanodiscs and c silver nanorods obtained from HR-TEM micrographs Nanoscale Res Lett (2010) 5: 161 1– 161 8 16 15 UV–vis Spectroscopy Study It has been observed that silver ... Wavelength (nm) 2.0 DDA Expm Mie 1.2 1.0 0.8 0 .6 0.4 (i) 0.2 400 0.0 350 400 450 50 0 55 0 60 0 50 0 60 0 700 800 Wavelength (nm) Wavelength (nm) Fig Comparison of the extinction efﬁciency between experimental...

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Báo cáo hóa học: "Synthesis of SnS nanocrystals by the solvothermal decomposition of a single source precursor" pdf

Danh mục: Báo cáo khoa học

... (Wiley, New York, 1 9 56 ) 31 A.P Lambros, D Geraleas, N.A Economou, J Phys Chem Solids 35, 53 7 (1974) 32 A.P Alivisatos, J Phys Chem 100, 132 26 (19 96) 33 L Brus, J Phys Chem 90, 255 5 (19 86) ... were dried under vacuum (0.32 g, 40%) For the synthesis of SnS NCs, the mixture of 0. 16 g Sn(Et2Dtc)2, ml oleic acid and ml of oleylamine contained in a 50 ml three neck ﬂask (1) was degassed and ... (170 °C or 2 05 °C) solution of ml of degassed oleylamine and 0.2 g of tetradecylphosphonic acid (TDPA) After the temperature decreased to about 150 °C, resulting from the injection of the precursor,...

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Báo cáo hóa học: " Synthesis of SnS nanocrystals by the solvothermal decomposition of a single source precursor" ppt

Danh mục: Báo cáo khoa học

... (Wiley, New York, 1 9 56 ) 31 A.P Lambros, D Geraleas, N.A Economou, J Phys Chem Solids 35, 53 7 (1974) 32 A.P Alivisatos, J Phys Chem 100, 132 26 (19 96) 33 L Brus, J Phys Chem 90, 255 5 (19 86) ... were dried under vacuum (0.32 g, 40%) For the synthesis of SnS NCs, the mixture of 0. 16 g Sn(Et2Dtc)2, ml oleic acid and ml of oleylamine contained in a 50 ml three neck ﬂask (1) was degassed and ... (170 °C or 2 05 °C) solution of ml of degassed oleylamine and 0.2 g of tetradecylphosphonic acid (TDPA) After the temperature decreased to about 150 °C, resulting from the injection of the precursor,...

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Research ArticleGreen Synthesis of Silver Nanoparticles UsingPolyalthia longifoliaLeaf Extract along with D-Sorbitol:StudyofAntibacterialActivity

Danh mục: Kỹ thuật

... shape-controlled synthesis, ” Journal of Physical Chemistry B, vol 110, no 32, pp 1 56 66 – 1 56 75, 20 06 [ 26] J Y Song and B S Kim, “Rapid biological synthesis of silver nanoparticles using plant leaf ... pp 23 46 2 353 , 20 05 [ 35] D W Hatchett and H S White, “Electrochemistry of sulfur adlayers on the low-index faces of silver, ” Journal of Physical Chemistry, vol 100, no 23, pp 9 854 –9 859 , 19 96 Journal ... innoxiousness of nanosize silver colloids on textile fabrics,” Textile Research Journal, vol 75, no 7, pp 55 1 55 6, 20 05 R W Y Sun, R Chen, N P Y Chung, C M Ho, C L S Lin, and C M Che, Silver nanoparticles...

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Green synthesis of silver nanoparticles from marigold flower and its synergistic antimicrobial potential

Danh mục: Hóa học - Dầu khí

... 13 .5 25. 5 – 17 .5 22 11 .5 9 12 10 10 17 26 .5 – 22 .5 26 11 .5 9 .5 11 15. 5 0.23 0.23 0 .59 0.08 – 0. 65 0.4 0.11 0.49 0 .67 23 13 .5 22 14 14 24 .5 26 .5 11 20 .5 34 – 24 .5 14.2 22 15. 5 14.7 25. 5 31 .5 13 ... Electron Microscope 90 87 .5 85 82 .5 80 77 .5 75 72 .5 70 67 .5 65 62 .5 60 57 .5 55 52 .5 50 47 .5 45 42 .5 There was a difference in the formation of AgNPs by and 10 and 15 boiling time Maximum AgNP ... 260 3.99 3240 .52 3 158 .54 3082. 35 3 862 .58 A 368 3.20 357 8.07 %T 3.1 Standardization 1230 .63 11 86. 26 50 0 155 6. 61 151 0.31 450 1782.29 400 167 1.37 O.D 2.7 Antimicrobial activity B 7 35 360 0 3000 Figure...

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Synergistic effect of two foreign metal ions on shape selective synthesis of gold nanocrystals

Danh mục: Cao đẳng - Đại học

... 1.12 10.79 Pd 1.12 0 .58 19.03 EDX ICP-MS XPS Au 96. 61 92.93 58 .93 Ag 1 .50 5. 97 18.47 Pd 1.89 1.10 22 .60 EDX ICP-MS XPS Au 99.19 97 . 56 74.71 Ag 0.24 1.94 10. 35 Pd 0 .57 0 .50 14.94 Atomic % Atomic ... images of the Au nanocrystals obtained from reactions with molar ratio of Au:Pd:Ag = 15: 1:1 .6 Most of particles (> 95% ) exhibit well-defined facets with average longest edge length of ~1 95 nm, ... concentration of silver ions Figure 3 .5 shows the morphology of the Au bipyramids obtained at a ratio of Au:Pd:Ag = 15: 1:8 with a reaction temperature of 120 °C (same as for the case of 25 Au prisms)...

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Synthesis and stress analysis of germanium nanocrystals embedded in dielectric matrices 5

Danh mục: Cao đẳng - Đại học

... pp 58 6 -58 8, 2000 [5] M I Alonso and K Winer, “Raman spectra of c-Si1-xGex alloys”, Phys Rev B, vol 39, pp 10 0 56 -10 062 , 1989 [6] E Bassous, H N Yu, and V Maniscalco, “Topology of Silicon Structures ... Phys Rev B, vol 51 , pp 1 65 8 - 167 0, 19 95 [3] K H Heinig, B Schmidt, A Markwitz, R Grӧtzschel, M Strobel, and S Oswald, “Precipitation, ripening and chemical effects during annealing of Ge+ implanted ... threshold of 800°C is necessary for the synthesis of Ge nanocrystals in the silicon oxide matrix The pile up of Ge nanocrystal near the Si/silicon oxide interface and the void region of Ge nanocrystal...

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Báo cáo hóa học: "Synthesis of Efﬁciently Green Luminescent CdSe/ZnS Nanocrystals Via Microﬂuidic Reaction" docx

Danh mục: Hóa học - Dầu khí

... (b) 53 4 QY of PL (%) 66 (c) 48 53 2 69 42 53 0 63 52 8 60 52 6 57 52 4 54 52 2 51 10 15 20 25 30 FWHM of PL (nm) (a) PL Peak Location (nm) Fig (a) PL spectra; (b) and (c) FWHM of PL, PL peak location, ... 123 10 12 20 30 40 50 o 2-Theta ( C) 60 Nanoscale Res Lett (2008) 3:134–139 (b) 65 QY of PL (%) (c) 53 4 70 53 1 60 55 52 8 50 52 5 45 40 35 60 52 2 90 34 FWHM of PL (nm) (a) PL Peak Location (nm) ... at 52 2 nm 123 1 36 Nanoscale Res Lett (2008) 3:134–139 (a) (b) 53 6 Abs Intensity (a.u.) Fig Schematic graph for the set-up of capillary microreaction 53 2 400 50 0 Wavelength (nm) 34 52 8 32 52 4 52 0...

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Báo cáo hóa học: "Solvothermal Synthesis of Ternary Sulﬁdes of Sb2 (x 5 0.4, 1) with 3D Flower-Like Architectures" ppt

Danh mục: Hóa học - Dầu khí

... morphology of the SbBiS3 is shown in Fig 3c It can be seen that similar to the Sb1.6Bi0.4S3, the SbBiS3 products also consist of a large number of ﬂower-like 123 366 Nanoscale Res Lett (2010) 5: 364 – 369 ... numbers of nanorods, which grow radially from the central core and have a length of lm and a diameter of about 100 nm Nanoscale Res Lett (2010) 5: 364 – 369 Fig TEM, HRTEM, and SAED images of the ... Kanatzidis, Chem Mater 9, 1 65 5 (1997) R.S Mane, B.R Sankapal, C.D Lokhande, Mater Chem Phys 60 , 1 96 (1999) Y Yu, R.H Wang, Q Chen, L.M Peng, J Phys Chem B 109, 23312 (20 05) 369 B Roy, B.R Chakraborty,...

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Báo cáo hóa học: " Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction" pot

Danh mục: Hóa học - Dầu khí

... diffusion-controlled synthesis of spherical NCs, the burst of Fig a Absorption, b PL spectra, and c relative kinetics of CdS NCs prepared at various temperatures at a constant residence time of 68 s (OA: 15 vol ... Taking the residence time of 68 s as an example, tuning the volume percentage of OA from 10 .5 to 51 .2% led to a signiﬁcant increase in the mean diameter of the NCs from 3.8 to 5. 3 nm, accompanied by ... (HWHM*11 nm) CdS NCs can be obtained with a high volume ratio of OA of 51 .2%, and the size of the CdS NCs were in the range of 4 .5 5. 3 nm in the microreaction The efﬁcient mixing and heat transfer,...

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Báo cáo hóa học: " Facile synthesis of monodisperse ZnS capped CdS nanocrystals exhibiting efﬁcient blue emission" docx

Danh mục: Báo cáo khoa học

... Yield 1. 15 g ( 75% ) Elemental analysis (%), experimental (calculated): Zn, 22.89 (21.11); S, 43.04 (41.40); C, 23. 15 (23. 26) ; H, 3.10 (3.90) Preparation of CdS/ZnS nanocrystals (1) Synthesis of nm ... a mixture constituted of 0.13 25 mmol of Zn(ex)2, dissolved in 1.3 g of dioctylamine (DOA), and 0.4 mmol of zinc stearate in ml of octadecene was added within 45 by means of a syringe pump Aliquots ... to the nanocrystals surface and complete in this way the ligand shell consisting of 123 64 Nanoscale Res Lett (20 06) 1 :62 67 Fig Thermogravimetric analysis of Zn(ex)2 Fig EDX analysis of the...

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Handbook of Polymer Synthesis Second Edition Episode 5 potx

Danh mục: Kĩ thuật Viễn thông

... 494 4 95 4 96 497 498 499 50 0 50 1 50 2 50 3 50 4 50 5 50 6 50 7 50 8 50 9 51 0 51 1 51 2 51 3 51 4 51 5 51 6 51 7 51 8 51 9 52 0 52 1 52 2 52 3 52 4 52 5 52 6 52 7 52 8 52 9 53 0 53 1 Nowakowska, M (19 85) Polym Photochem., 6: ... 54 8 54 9 55 0 55 1 55 2 55 3 55 4 55 5 55 6 55 7 55 8 55 9 56 0 56 1 56 2 56 3 56 4 56 5 56 6 56 7 Furukawa, J., Kobayashi, E., and Nagata, S (1977) Polym J., 9: 63 3 Sigwalt, P (1 961 ) J Polym Sci., 52 : 15 Nagai, K., ... 444 4 45 4 46 447 448 449 450 451 452 453 454 455 4 56 457 458 459 460 461 462 463 464 4 65 466 467 468 469 470 471 472 473 474 4 75 4 76 477 478 479 480 481 482 483 484 4 85 4 86 Field, N (1 960 ) J Org...

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Synthesis of various magnetic nanostructures and the microwave characterizations 5

Danh mục: Cao đẳng - Đại học

... Particle Size (nm) 0.4 D 0.2 35 40 45 50 55 60 65 70 75 Particle Size (nm) 0.3 0.3 0.1 0.1 0.0 C 0.4 0.3 Relative Percentage Relative Percentage 0 .5 Relative Percentage 0 .5 0.4 0.3 0.2 0.1 F 0.4 0.3 ... properties of faceted octahedron-shaped structures 50 nm 50 nm 50 nm 50 nm nm Fig 5. 5 TEM images of the as-obtained Fe3O4 nanoparticles by reducing the concentration of oleic acid: A) 0. 35, B) 0.19, ... size histograms in Fig 5. 9 0 .6 A 0.4 0.3 0.2 B 0.2 0.1 0.0 30 50 70 90 110 130 150 170 190 0.0 0.1 0.0 12 14 16 18 20 22 24 26 28 Particle Size (nm) 14 16 18 20 22 24 26 0 .5 E Relative Percentage...

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Shape controlled synthesis of monodisperse gold nanocrystals and gold based hybrid nanocrystals

Danh mục: Y - Dược

... 133 .6 {310} 143.1 1 26. 9 148.1 121.9 151 .9 118.1 α β γ {221} 141 90 141 {55 2} 134 97 148 .5 {331} 129 .5 102 153 .5 {441} 124 108 160 α β {211} 1 26. 9 143.1 {52 2} 1 36. 4 133 .6 {311}   arctan( 1 36. 4 ... γ {321} 153 .5 87. 45 148.4 {421} 160 .0 86. 75 153 .5 {431} 141.1 98.0 157 .1 {432} 160 .0 78.0 1 36. 0 {53 2} 163 .9 78 .6 141.1 From the discussion section 2.3.2, it is clear that the class of the exposed ... 55 4.2.1 Materials 55 4.2.2 Preparation of Au seeds 55 4.2.3 Synthesis of shield-like Au NCs 55 4.2.4 Materials characterizations 56 4.2 .5 Electrochemical...

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Affinity guided isolation, structure elucidation and total synthesis of laetirobin a and its analogue synthesis for therapeutic development 5

Danh mục: Cao đẳng - Đại học

... C29H24O5 452 .5 OH O 3 26 Appendix O O O OBn 5- 12 C29H24O5 452 .5 O FT-IR Data 327 O O O 5- 13 C44H32O8 68 8.7 O O O O O 328 Appendix OTs 5- 18 C20H17IO6S2 54 4.4 TsO I FT-IR Data 329 TsO OTs OBn 5- 19 C53H44O13S4 ... 752 .7 O OH O 5- 2 C18H14O3 278.3 O 322 Appendix I OH 5- 8 C8H7IO2 262 .0 O FT-IR Data 323 I OTs 5- 9 C15H13IO4S 4 16. 2 O 324 Appendix O OTs 5- 10 C43H36O9S2 760 .9 OBn OTs O FT-IR Data 3 25 O OH OBn 5- 11 ... C19H14O5 322.3 O OMe FT-IR Data 331 HO O O 5- 23 C17H10O5 294.3 O OH 332 Appendix TsO OTs 3 - 56 C30H34O7S2Si 59 8.8 O TES FT-IR Data 333 HO OH 3 -57 C16H22O3Si 290.4 O TES 334 Appendix HO O 3- 35 C16H22O3Si...

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Solid phase synthesis and biological evaluation of 1, 3, 5 triazine derivatives

Danh mục: Cao đẳng - Đại học

... 59 3.3.4 Oxidation and cleavage of 3-7 62 3.3 .5 Solid-phase Synthesis of 3-7 63 3.3 .6 Experimental Section 65 3.4 Synthesis of 1,3 ,5- triazine Analogs via Guanidium Azolides 80 3 .5 Synthesis of ... Introduction 54 3.1.1 Synthesis of 1,3 ,5- Triazine Heterocycles 54 3.2 Outline of Synthetic Strategy 56 3.3 Results and Discussion for the Synthesis of 2 ,5, 6- Trisubsituted-4phenylimino-4 ,5- dihydro-1,3 ,5- triazine-2-amine ... solid-phase synthesis of 2 ,5, 6- trisubsituted-4- 57 phenylimino-4 ,5- dihydro-1,3 ,5- triazine-2-amine Scheme 3 .6 Solution-phase route to the synthesis of 2 ,5, 6- trisubsituted-4- 58 phenylimino-4 ,5- dihydro-1,3 ,5- triazine-2-amine...

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Shape controlling of silver and gold nanocrystals

Danh mục: Cao đẳng - Đại học

... Phys Chem B 20 06, 110, 154 6- 155 2 44) C Kan, X Zhu, and G Wang, J Phys Chem B 20 06, 110, 4 65 1 -4 65 6 45) Y xiong, I Washio, J Chen, H Cai, Z Li and Y Xia, Langmuir, 20 06, 22, 8 56 3- 857 0 46) Y xiong, ... Yun, Chem Mater 20 05, 17, 55 58 -55 61 31) D H Dahanayaka, J X Wang, S Hossain, and L A Bumm, J Am Chem Soc 20 06, 128, 6 052 6 053 32) H Chu, C Kuo, and M H Huang, Inorg.Chem 20 06, 45 808-813 33) X Sun, ... Chem Mater 20 05, 17, 56 6 -57 2 40) B Liu, J Y Lee, Y P Ting, and J P Chen, J Phys Chem B 20 05, 109, 152 56- 152 63 41) M Maillard, S Giorgio, and M P Pileni, J Phys Chem B 2003, 107, 2 466 -2470 42) V...

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Synthesis and stress analysis of germanium nanocrystals embedded in dielectric matrices 1

Danh mục: Cao đẳng - Đại học

... infrared photoluminescence of nanocrystalline Ge formed by reduction of Si0.75Ge0.25O2 / Si0.75Ge0. 25 using various H2 pressures”, J Appl Phys., vol 93, pp 9988-99 96, 2003 [5] A V Kobolov., H Oyanagi, ... in support of the quantum-confinement mechanism,” Phys Rev B, vol 51 , pp 1 65 8 - 167 0, 19 95 [7] J M Blaser, C Caragianis-Broadridge, B L Walden and D C Paine, “A study of the effect of oxide structure ... nucleation of the Ge nanocrystals due to its high values of diffusivity in silica ( ~5. 6 10 5 cm2s−1) for the temperature range concerned [9] whereas for Si, even at 1000°C, the diffusivity of Si in...

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Synthesis and stress analysis of germanium nanocrystals embedded in dielectric matrices 2

Danh mục: Cao đẳng - Đại học

... minutes shown in Figure 5. 2 Figure 5. 6: (a) Secondary ion mass spectrometry (SIMS) profiles of assputtered and annealed (800°C for 15 and 60 minutes) Samples B, (b) SIMS profiles of as-sputtered and ... still ~11 .5 at.% of Ge in the HfAlO matrix From the results of Sample B, a Ge concentration of ~10 .5 at.% would be sufficient for the formation of nanocrystals when annealed at 800°C for 15 minutes ... pp 50 7 950 81, 2004 [6] X B Lu, P F Lee, and J Y Dai, Synthesis and memory effect study of Ge nanocrystals embedded in LaAlO3 high-k dielectrics”, Appl Phys Lett., vol 86, pp 203111-203113, 2005...

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