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

... these is the availability of capable shape- controlled synthesis methods The development of a fundamental understanding of shape- dependent properties, through which shape of nanomaterials may be ... Guo and Wang, Chapter 2011) A good understanding of the growth mechanisms can reduce the number of trial -and- error in shape controlled synthesis; thereby allowing the...

Ngày tải lên: 09/09/2015, 18:49

... on gold nanoparticles? Surface Chem Angew Chem Int Ed 2004, 43:118-121 Page 11 of 11 doi:10.1186/1556-276X-6-428 Cite this article as: Young et al.: Size-controlled synthesis of monodispersed gold ... stability of gold nanoparticles and their functionalization by cysteine Gold Bull 2009, 42:113-123 Jana NR, Gearheart L, Murphy CJ: Seeding growth for size control of 5-...

Ngày tải lên: 21/06/2014, 03:20

... synthesis of monodisperse CdS NCs [27], but its low throughput limits its use to commercial-scale synthesis In this study, a capillary microreactor was used for the accelerated synthesis of monodisperse ... images of CdS NCs (band-gap absorption of 449 nm with an HWHM value of 11 nm) synthesized in open air via microreaction Therefore, due to the high quality of th...

Ngày tải lên: 22/06/2014, 00:20

... TRANSITION METAL OXIDES NANOSTRUCTURES: SHAPE CONTROLLED SYNTHESIS, CHARACTERIZATIONS AND STUDIES OF PHYSICAL PROPERTIES BINNI VARGHESE (M Sc.) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF ... emission properties of various metal oxide nanostructure arrays Nanostructures of zinc oxides, 29 Chapter Introduction to Metal Oxide Nanostructures molybd...

Ngày tải lên: 14/09/2015, 14:11

... SYNERGISTIC EFFECT OF TWO FOREIGN METAL IONS ON SHAPE- SELECTIVE SYNTHESIS OF GOLD NANOCRYSTALS TRAN TRONG TOAN (B.Sc (Hons.), University of Science Ho Chi Minh City) ... ratio of Ag and Pd ions The synergistic effect of Ag and Pd ions on the formation of the novel Au nanocrystals was studied In our experimental conditions, the underpotential dep...

Ngày tải lên: 13/10/2015, 16:41

... The growth process of the different 1D TiO2 nanostructures was monitored by SEM and TEM Fig 2(a–c) shows the SEM images of the samples S1–S3, respectively, which reveal that the reaction of TiO2 ... PEG-300, 1D nanostructures of different morphologies such as nanorods, nanowires and nanotubes with different diameters and lengths were formed To understand the format...

Ngày tải lên: 20/03/2014, 13:08

... understanding of the shape and sizedependent properties of α- Fe2 O3 In this paper, we propose an easy route for fabricating αFeOOH nanorods via a low-temperature hydrothermal method The α- FeOOH nanorods ... FESEM image of the as-obtained α- FeOOH nanorods and (b) TEM image of a single α- FeOOH nanorod (inset: SAED pattern of a single α- FeOOH nanorod); (c) FESEM ima...

Ngày tải lên: 05/05/2014, 15:26

... 3.10 (3.90) Preparation of CdS /ZnS nanocrystals (1) Synthesis of nm CdS nanocrystals One millimole of cadmium stearate, mmol of stearic acid, mmol of oleylamine and 13.4 g of octadecene were mixed ... method can easily be extended to the preparation of other core/shell and core/shell/shell systems such as CdSe /ZnS, CdSe/ ZnSe /ZnS or CdSe /CdS /ZnS nanocrystals...

Ngày tải lên: 22/06/2014, 22:20

... 3.3 33 Synthesis and characterization of the CdS|CdSe|CdS and CdSe|CdS|CdSe sandwiched nanorods ………………………… 3.2 32 41 Optical properties of the Au-deposited CdS|CdSe|CdS and CdSe|CdS|CdSe sandwiched ... sandwiched nanostructures In this section, we compared the optical properties of the sandwiched nanorods with that of the pure CdS nanorods, CdSe nanorods and a 1:1...

Ngày tải lên: 03/10/2015, 21:57

... 2647 Synthesis of UDP-glucuronic acid and UDP-xylose T Oka and Y Jigami Similarly, we assayed UDP-Xyl synthesis by providing UDP-GlcA as substrate and NAD+ as cofactor The cytoplasmic fraction from ... FEBS T Oka and Y Jigami Synthesis of UDP-glucuronic acid and UDP-xylose nucleotides UDP-GlcA and UDP-Xyl, similar to what was done for production of reco...

Ngày tải lên: 07/03/2014, 12:20

... occurred immediately Then the mixture solution was transferred into a commercial stainless steel Tef- lon-lined autoclave of 50 mL capacity The autoclave was maintained at a temperature of 18 0°C ... water and absolute ethanol respectively, and finally dried in air at 60°C The XRD pattern of prepared powder sample was collected using a Rigaku D/ Max-2200PC X-ray diffractom...

Ngày tải lên: 19/03/2014, 16:48

... a form of dispersion Fig XRD patterns of (a) particles obtained in the standard condition and (b) standard of WO3 H2O on the basis of JCPDS data (JCPDS No 1 8-1 418) Fig Time evolutions of (a) ... of Freedman [5], who has reported that only WO3 2H2O was obtained at 25 °C while mixtures of WO3 H2O and WO3 2H2O were obtained at 50 °C Generally in monodisperse particl...

Ngày tải lên: 19/03/2014, 16:48

... Conclusion In conclusion, nanorods, nanocubes and nanospheres of iron oxide have been synthesized in [BMIM][Tf2 N] ionic liquid Oleic acid plays an important role in the shape control of nanostructures ... Oleylamine and 1,2-hexadecanediol are required co-surfactants in controlling the formation of nanorods of iron oxide The different solubility of pre...

Ngày tải lên: 20/03/2014, 13:08

... Synthesis of Porous R -Fe2O3 Nanorods so far, there are only a few successful reports on this kind of synthesis, 23-25 including the synthesis of single-crystalline R -Fe2O3 nanotubes ... route from β-FeOOH,24 and the hydrothermal synthesis of R -Fe2O3 hollow spheres in the presence of D-glucose.25 In a series of attempts, we first prepared porous γ -Fe2O3 (not...

Ngày tải lên: 20/03/2014, 13:08

... effect 3.6 Effects of alkali source TEM micrographs of ZnO prepared with different concentration of NaOH are shown in Fig 7.With the molar ratio of Zn2+ to NaOH Fig TEM images of ZnO prepared with ... prepare ZnO nanostructures in the presence of annexing agent As shown in Scheme 1, CTA+ and hydroxyl groups coming from the additive of CTAB and PEG400 respectively can ads...

Ngày tải lên: 06/05/2014, 13:23