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Search for "HRTEM" in Full Text gives 210 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Enhanced photocatalytic activity of Ag–ZnO hybrid plasmonic nanostructures prepared by a facile wet chemical method

  • Sini Kuriakose,
  • Vandana Choudhary,
  • Biswarup Satpati and
  • Satyabrata Mohapatra

Beilstein J. Nanotechnol. 2014, 5, 639–650, doi:10.3762/bjnano.5.75

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  • anisotropic nanostructures decorated with nanoparticles. HRTEM study of these decorating nanoparticles confirmed them to be of Ag. Figure 4b shows the selected area diffraction (SAD) pattern from a region marked by a dotted circle. The SAD pattern shows concentric rings consisting of distinct spots, which is
  • fringes and the measured lattice spacing is 2.8 Å. The HRTEM image of of Ag–ZnO hybrid nanostructures shown in Figure 4b reveals lattice fringes of 2.3 Å and 2.8 Å, which correspond to the (111) and (100) interplanar spacing (d-spacings) of Ag and ZnO, respectively. Some of the measured d-spacings from
  • prepared with varying AgNO3 concentrations and different [Ag+]/[citrate] ratios (a) 1:1, (b) 1:10. (a) Low-magnification TEM image of ZnO nanostructures in sample PZ. (b) HRTEM image showing lattice fringes. (c) STEM-HAADF image from the same area of TEM image. (d) EDX spectra from a region marked by area
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Published 15 May 2014

Artificial sunlight and ultraviolet light induced photo-epoxidation of propylene over V-Ti/MCM-41 photocatalyst

  • Van-Huy Nguyen,
  • Shawn D. Lin,
  • Jeffrey Chi-Sheng Wu and
  • Hsunling Bai

Beilstein J. Nanotechnol. 2014, 5, 566–576, doi:10.3762/bjnano.5.67

Graphical Abstract
  • photocatalyst. The XRD pattern indicates a mesoporous hexagonal lattice with a clear feature of (100). The (110) and (200) peaks are not well-separated, maybe due to the high calcination temperature of 823 K [33]. The HRTEM image of V-Ti/MCM-41 in Figure 3 reveals a uniform hexagonal structure, which is a
  • (XANES) of the vanadium K-edge was carried out with synchrotron radiation at the beam line 16A, National Synchrotron Radiation Research Center, Taiwan. The standard metal foil and V oxides (V2O5 and V2O3) powders were used as references. High resolution transmission electron microscope (HRTEM) was
  • –vis absorption of V-Ti/MCM-41, and emission of (b) 200 W mercury arc lamp, (c) 300 W Xe lamp (extracted from [22]) and (d) AM1.5G filter [31]. The low-angle XRD pattern of V-Ti/MCM-41. The HRTEM images of V-Ti/MCM-41 photocatalyst. Summary of the V K-edge characterization of V-Ti/MCM-41 with
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Published 05 May 2014

Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves

  • Victor Mamane,
  • Guillaume Mercier,
  • Junidah Abdul Shukor,
  • Jérôme Gleize,
  • Aziz Azizan,
  • Yves Fort and
  • Brigitte Vigolo

Beilstein J. Nanotechnol. 2014, 5, 537–545, doi:10.3762/bjnano.5.63

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  • min, 10 min and 15 min (Scheme 1). After treatment, the obtained functionalized samples (f-SWNT-5min, f-SWNT-10min and f-SWNT-15min) were analyzed by dispersion tests, high resolution transmission electron microscopy (HRTEM), Raman spectroscopy, and TGA–MS. Figure 1 shows photographs of the
  • diameter dt is 1.34 nm as expected for arc-discharge produced SWNTs. The modification of the SWNT structure caused by functionalization is also revealed in the HRTEM images shown in Figure 2. For the raw sample, the walls of the SWNTs exhibit a low defect level (Figure 2b) and appear undamaged. After
  • functionalization (Figure 2c and 2d), SWNT walls whose damages are difficult to identify in the images are observed. No significant difference between the three functionalized samples (including f-SWNT-5min, not shown in Figure 2) could be evidenced by using HRTEM. Functionalization levels and nature of the created
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Published 29 Apr 2014

Mesoporous cerium oxide nanospheres for the visible-light driven photocatalytic degradation of dyes

  • Subas K. Muduli,
  • Songling Wang,
  • Shi Chen,
  • Chin Fan Ng,
  • Cheng Hon Alfred Huan,
  • Tze Chien Sum and
  • Han Sen Soo

Beilstein J. Nanotechnol. 2014, 5, 517–523, doi:10.3762/bjnano.5.60

Graphical Abstract
  • cerium oxide to obtain the band gap. (a) TEM and (b) HRTEM images of the mesoporous cerium oxide nanospheres. (c) Nitrogen adsorption–desorption isotherm of the mesoporous cerium oxide nanospheres. Comparison of RhB concentrations over time at 554 nm, after photocatalytic degradation with mesoporous
  • analyzer. The authors also thank Dr. Wei Fengxia for her assistance with HRTEM measurements and Dr. Sarifuddin Gazi for his help with EPR experiments.
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Published 24 Apr 2014

Plasma-assisted synthesis and high-resolution characterization of anisotropic elemental and bimetallic core–shell magnetic nanoparticles

  • M. Hennes,
  • A. Lotnyk and
  • S. G. Mayr

Beilstein J. Nanotechnol. 2014, 5, 466–475, doi:10.3762/bjnano.5.54

Graphical Abstract
  • transmission electron microscopy (HRTEM) investigation was done using a probe-Cs corrected FEI Titan3 G2 60-300 microscope operating at 300 kV acceleration voltage. Energy dispersive X-ray (EDX) analysis was performed by using a FEI SuperX detector with high visibility low-background FEI holder. The data was
  • , lattice plane separations in individual particles were assessed by analysing the FFT of HRTEM micrographs. In a first step, only the core of individual particles was taken into consideration. It was found to be polycrystalline and yielded results in agreement with Cu and Ni fcc phases (JCPDS: 04-0836 a
  • shell consists of an oxygen-rich outer part of several nanometers thickness, which is in agreement with previous HRTEM bright field image results. Finally, the long-term stability of the samples has been analyzed. CS-NPs have therefore been stored for 12 months under ambient air conditions. Subsequent
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Published 14 Apr 2014

One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approach

  • Vincent Tiing Tiong,
  • John Bell and
  • Hongxia Wang

Beilstein J. Nanotechnol. 2014, 5, 438–446, doi:10.3762/bjnano.5.51

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  • a JEOL JEM-1400 microscope. High-resolution TEM (HRTEM) and selected area electron diffraction (SAED) images were obtained using JEOL JEM-2100 microscope at an accelerating voltage of 200 kV. Ultraviolet–visible (UV–vis) absorption spectrum of the sample was measured at room temperature using a
  • observed, suggesting the highly purity of the synthesized CZTS material [19][20]. The morphology and particle size of the CZTS nanocrystals are shown in Figure 1c, which suggests the CZTS nanocrystals are monodisperse with crystal sizes around 10 ± 3 nm. High-resolution TEM (HRTEM) image in Figure 1d
  • reaction duration are shown in Figure 6. Figure 6a illustrates that, prior to the hydrothermal process, the precipitate obtained from the precursor solution is consisting of microspheres with size around 20–250 nm. The HRTEM indicates that the microparticle is the result of aggregation of numerous oval
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Published 09 Apr 2014

Dye-sensitized Pt@TiO2 core–shell nanostructures for the efficient photocatalytic generation of hydrogen

  • Jun Fang,
  • Lisha Yin,
  • Shaowen Cao,
  • Yusen Liao and
  • Can Xue

Beilstein J. Nanotechnol. 2014, 5, 360–364, doi:10.3762/bjnano.5.41

Graphical Abstract
  • diameter of 30 nm, and the TiO2 shell thickness is around 60 nm. The HRTEM image (Figure 2C) indicates lattice distances of 0.228 nm and 0.341 nm, which correspond to the (111) spacing of the core Pt particle and the (101) spacing of the anatase TiO2 shell. The SEM image (Figure 2D) reveals that these core
  • thermal conductivity detector (TCD). XRD patterns of Pt@TiO2 and Pt/TiO2 samples. TEM and SEM images of the Pt@TiO2 sample. (A) (B) TEM images of Pt@TiO2, (C) HRTEM images of Pt@TiO2, (D) SEM image of Pt@TiO2. UV–vis diffuse reflectance spectra of the Pt@TiO2 and Pt/TiO2 samples. The H2 yield from Pt@TiO2
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Published 26 Mar 2014

Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses

  • Annalena Wolff,
  • Walid Hetaba,
  • Marco Wißbrock,
  • Stefan Löffler,
  • Nadine Mill,
  • Katrin Eckstädt,
  • Axel Dreyer,
  • Inga Ennen,
  • Norbert Sewald,
  • Peter Schattschneider and
  • Andreas Hütten

Beilstein J. Nanotechnol. 2014, 5, 210–218, doi:10.3762/bjnano.5.23

Graphical Abstract
  • primary-building-block-like substructures as well as mesocrystal-like structures, were observed in HRTEM measurements. These structures display regions of substantial orientation and possess the same shape and size as the resulting discs. An increase in orientation with time was observed in electron
  • stages of the growth process using transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), electron energy loss spectroscopy (EELS) and electron diffraction measurements. Results In this bioinspired synthesis, stoichiometric Co2FeO4 discs of hexagonal, diamond
  • : one at Dsmall = 5–20 nm and a second one at Dlarge = 35 nm. Incomplete discs, as displayed in Figure 3d,e can be found in addition to the discs throughout the entire growth process. HRTEM measurements of an incomplete, irregularly-shaped particle (Figure 3e) reveal that it is composed of several
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Published 28 Feb 2014

Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiation

  • Liang Wei,
  • Yongjuan Chen,
  • Jialin Zhao and
  • Zhaohui Li

Beilstein J. Nanotechnol. 2013, 4, 949–955, doi:10.3762/bjnano.4.107

Graphical Abstract
  • successfully prepared via a facile two-step hydrothermal process. The as-prepared samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Their photocatalytic performance
  • were observed in the XRD patterns, the existence of NiS in the nanocomposite is confirmed by the HRTEM image (Figure 2c). Clear lattice fringes of 0.32 nm and 0.29 nm, which can be ascribed to the (102) plane of hexagonal ZnIn2S4 and the (300) plane of rhombohedral NiS respectively, can be observed. As
  • Bruker D8 Advance X-ray diffractometer with Cu Kα radiation. The transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) images were measured by a JEOL model JEM 2010 EX instrument at an accelerating voltage of 200 kV. The powder particles were supported on a
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Published 23 Dec 2013

Synthesis of boron nitride nanotubes from unprocessed colemanite

  • Saban Kalay,
  • Zehra Yilmaz and
  • Mustafa Çulha

Beilstein J. Nanotechnol. 2013, 4, 843–851, doi:10.3762/bjnano.4.95

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  • imaging and spectroscopic techniques including SEM, TEM, HRTEM, FTIR, Raman, UV–vis. The impurity of the BNNTs was verified with ICP-MS and XRD. It was found that the metallic impurities could be removed from crude BNNTs by washing in a hot HCl solution. With this method, randomly oriented BNNTs with 10
  • NH3, which is 450 °C. The decomposed NH3 has an important role in the synthesis of BNNT. It was observed that while the BNNTs were formed on top of the alumina boat, BNNT was not formed at the bottom of the reaction mixture (Figure 2f). TEM and HRTEM analysis The structure of BNNTs was further
  • 6 nm (Figure 3e and f). The HRTEM image of the synthesized BNNT showed that the distance between the walls was 0.34 nm. We propose that the BNNTs are synthesized according to the base growth mechanism. In this mechanism, metallic Fe in a certain size forms from the Fe2O3 catalyst. This initial step
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Published 04 Dec 2013

A facile synthesis of a carbon-encapsulated Fe3O4 nanocomposite and its performance as anode in lithium-ion batteries

  • Raju Prakash,
  • Katharina Fanselau,
  • Shuhua Ren,
  • Tapan Kumar Mandal,
  • Christian Kübel,
  • Horst Hahn and
  • Maximilian Fichtner

Beilstein J. Nanotechnol. 2013, 4, 699–704, doi:10.3762/bjnano.4.79

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  • bare Fe3O4 nanoparticles could also be observed (Figure S2 in Supporting Information File 1). Fast Fourier transform (FFT) analysis of various HRTEM images (of crystallites located inside or outside of carbon shells, see Figure S3 in Supporting Information File 1) reveal that the observed lattice
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Published 30 Oct 2013

A nano-graphite cold cathode for an energy-efficient cathodoluminescent light source

  • Alexander N. Obraztsov,
  • Victor I. Kleshch and
  • Elena A. Smolnikova

Beilstein J. Nanotechnol. 2013, 4, 493–500, doi:10.3762/bjnano.4.58

Graphical Abstract
  • resolution imaging with transmission electron microscopy (HRTEM) and electron diffraction analysis [15] confirm this conclusion and indicate that these flakes consist of a few graphene layers (of 5 to 50) oriented predominantly perpendicular to the substrate surface (see Figure 4). The thickness of only a
  • layers are connected with each other. In HRTEM images these connections look like arced structures at the top ends of the graphene layers (see Figure 4). This specific structure results from the material formation process in the plasma activated gaseous environment [13][14][15]. It is noteworthy that
  • HRTEM images (Figure 4) clearly demonstrate the atomic structure for only a small range of depth in the focal plane. Consequently, we suppose that the pairing for each layer switches from one side to the other, preventing the mutual shift of the atomic layers. This greatly increases the mechanical
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Published 28 Aug 2013

Nanoscopic surfactant behavior of the porin MspA in aqueous media

  • Ayomi S. Perera,
  • Hongwang Wang,
  • Tej B. Shrestha,
  • Deryl L. Troyer and
  • Stefan H. Bossmann

Beilstein J. Nanotechnol. 2013, 4, 278–284, doi:10.3762/bjnano.4.30

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  • microscopy (TEM). The TEM were prepared by immersing carbon-coated 200-mesh copper grids in aqueous liposome-containing solutions, followed by counter-staining by 2% aqueous uranyl acetate solution, and overnight drying in a desiccator. The dried grids were analyzed by using a HRTEM FEI Tecnai F20 XT Field
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Published 25 Apr 2013

Functionalization of vertically aligned carbon nanotubes

  • Eloise Van Hooijdonk,
  • Carla Bittencourt,
  • Rony Snyders and
  • Jean-François Colomer

Beilstein J. Nanotechnol. 2013, 4, 129–152, doi:10.3762/bjnano.4.14

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Published 22 Feb 2013

Low-dose patterning of platinum nanoclusters on carbon nanotubes by focused-electron-beam-induced deposition as studied by TEM

  • Xiaoxing Ke,
  • Carla Bittencourt,
  • Sara Bals and
  • Gustaaf Van Tendeloo

Beilstein J. Nanotechnol. 2013, 4, 77–86, doi:10.3762/bjnano.4.9

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  • the formation of a novel stripe-patterning of nanoclusters on the surface of the CNTs, which may open up new prospects of nanostructuring for applications in nanodevices dependent on the distribution of metal clusters. High-resolution transmission electron microscopy (HRTEM) and high-angle annular
  • proximity effect can be ignored and the site-specificity is achieved at the nanoscale. The irradiated and nonirradiated parts of the CNT are investigated by HRTEM (Figure 3c,d). We observe that the graphitic walls under the region covered by Pt nanoclusters (Figure 3c) show similar structure in comparison
  • manually and visualized in the Amira software. High-resolution TEM (HRTEM) of the as-deposited nanostructures is performed on the same microscope at 200 kV. Post treatment using electron-beam irradiation is, however, performed using a FEI Titan 80–300 microscope fitted with aberration-correctors for the
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Published 04 Feb 2013
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  • ≤ 0.4). Coarse- and fine-tuning of the Sb concentration was achieved by selecting proper electrolyte composition and potential [60]. Figure 10 displays HRTEM images of 20−30 nm diameter nanowires deposited at U = −200 mV versus SCE and for different Sb concentrations in the electrolyte (c(Sb) = 0.01 (a
  • evident by white lines in the HRTEM images (Figures 10a–d). XRD investigations on the preferred crystallographic orientation of Bi2Te3 and Bi1−xSbx nanowires grown in templates are described in references [58][60]. All experimental results reported so far clearly demonstrate that electrodeposition of
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Published 17 Dec 2012

Physics, chemistry and biology of functional nanostructures

  • Paul Ziemann and
  • Thomas Schimmel

Beilstein J. Nanotechnol. 2012, 3, 843–845, doi:10.3762/bjnano.3.94

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  • (SHIM). Remarkable also are the breakthroughs in structural insight due to the advent of Cs-corrected high-resolution transmission electron microscopy (HRTEM) [3][4] or spectroscopic imaging in scanning TEM (STEM) [5]. Related to facilities, certainly the worldwide impressive progress of synchrotron
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Published 11 Dec 2012

Towards atomic resolution in sodium titanate nanotubes using near-edge X-ray-absorption fine-structure spectromicroscopy combined with multichannel multiple-scattering calculations

  • Carla Bittencourt,
  • Peter Krüger,
  • Maureen J. Lagos,
  • Xiaoxing Ke,
  • Gustaaf Van Tendeloo,
  • Chris Ewels,
  • Polona Umek and
  • Peter Guttmann

Beilstein J. Nanotechnol. 2012, 3, 789–797, doi:10.3762/bjnano.3.88

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  • 5000, equipped with a monochromatic Al Kα X-ray source. The relative amount of sodium was evaluated to be 12% in accordance with EDS (11%) [FE-SEM (Carl Zeiss, Supra 35 LV)]. TEM image of sodium titanate nanotubes (a) typical region used to record the NEXAFS–TXM data. (b) HRTEM image revealing the
  • hollow core of these nanostructures (inset shows the interlayer spacing). (c–d) HRTEM images showing typical image contrast pattern associated with the scroll-like morphology. Note the number of layers in opposing tube walls is different in each case. (a) X-ray images at different photon energies E from
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Published 23 Nov 2012

Influence of the diameter of single-walled carbon nanotube bundles on the optoelectronic performance of dry-deposited thin films

  • Kimmo Mustonen,
  • Toma Susi,
  • Antti Kaskela,
  • Patrik Laiho,
  • Ying Tian,
  • Albert G. Nasibulin and
  • Esko I. Kauppinen

Beilstein J. Nanotechnol. 2012, 3, 692–702, doi:10.3762/bjnano.3.79

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  • transmission electron microscope observation (HRTEM, double aberration-corrected JEOL JEM-2200FS) of the SWCNT bundle diameters (dbundle), a similar dry-transfer approach was implemented. Copper grids with holey-carbon coating were manually pressed against quartz substrates with the SWCNT networks
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Published 17 Oct 2012

Nano-structuring, surface and bulk modification with a focused helium ion beam

  • Daniel Fox,
  • Yanhui Chen,
  • Colm C. Faulkner and
  • Hongzhou Zhang

Beilstein J. Nanotechnol. 2012, 3, 579–585, doi:10.3762/bjnano.3.67

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  • the corresponding ion beam used to modify the area indicated below. This graph clearly shows a significant reduction in gallium contamination implanted by the FIB lift-out process. Typically around a 32% reduction in gallium concentration is achieved by HIM modification. High resolution TEM (HRTEM
  • ) was performed on the HIM modified grooves and the unmodified sidewalls to afford further insight into the material modification. Figure 2a is the HRTEM image of the unmodified region of silicon; Figure 2b is the corresponding selected area diffraction (SAED) pattern from the region. Figure 2c is the
  • HRTEM image of the HIM modified region of the sample, Figure 2d is the corresponding SAED pattern. Figure 2a displays a noisy HRTEM image when compared with that of Figure 2c from the HIM modified region of the sample. The inset FFT of the images also show the increase in high frequency information
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Published 08 Aug 2012

Synthesis and electrical characterization of intrinsic and in situ doped Si nanowires using a novel precursor

  • Wolfgang Molnar,
  • Alois Lugstein,
  • Tomasz Wojcik,
  • Peter Pongratz,
  • Norbert Auner,
  • Christian Bauch and
  • Emmerich Bertagnolli

Beilstein J. Nanotechnol. 2012, 3, 564–569, doi:10.3762/bjnano.3.65

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  • decomposition of the precursor and therefore increases the growth rate. With PCl3 as the dopant, at least 800 °C, 20 sccm H2, and a 2 nm layer of Au were needed to produce epitaxial NWs in considerable quantity. For a more detailed view of the morphology of the intrinsic and doped Si-NWs we performed HRTEM
  • investigations. The TEM image in Figure 2a shows a slightly tapered, intrinsic Si-NW with a catalytic particle atop. The HRTEM micrograph of the crystalline core in Figure 2b shows clearly the Si(111) atomic planes (separation 3.14 Å) perpendicular to the NW axis. The reciprocal lattice peaks in the diffraction
  • , they have comparable diameters to those of the intrinsic NWs grown with pure OCTS. The growth orientation of the p-type doped NWs appears to be [112], as shown in the HRTEM image and the respective diffraction pattern (Figure 2c,d). Stacking faults run along the entire NW from the base to the top, and
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Published 31 Jul 2012

Directed deposition of silicon nanowires using neopentasilane as precursor and gold as catalyst

  • Britta Kämpken,
  • Verena Wulf,
  • Norbert Auner,
  • Marcel Winhold,
  • Michael Huth,
  • Daniel Rhinow and
  • Andreas Terfort

Beilstein J. Nanotechnol. 2012, 3, 535–545, doi:10.3762/bjnano.3.62

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  • confirm the buckled structure as well as the branched surface of the NWs (Figure 3, center). The HRTEM measurements show that the NWs are crystalline. The lattice constant of 3.2 Å, which can be seen in the fast Fourier transformed (FFT) image and the selected-area electron diffraction (SAED) pattern, as
  • spectra obtained (a) at the base, (b) at the tip of the NWs. TEM images of NWs grown on gold-sputtered Si[111] for 1 h at 375 °C. The FFT of the HRTEM image and the SAED pattern indicate the crystallinity of the Si NWs. SEM images of NWs grown on gold-sputtered Si[111] by exposure to NPS vapor for 1 h at
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Published 25 Jul 2012

A facile approach to nanoarchitectured three-dimensional graphene-based Li–Mn–O composite as high-power cathodes for Li-ion batteries

  • Wenyu Zhang,
  • Yi Zeng,
  • Chen Xu,
  • Ni Xiao,
  • Yiben Gao,
  • Lain-Jong Li,
  • Xiaodong Chen,
  • Huey Hoon Hng and
  • Qingyu Yan

Beilstein J. Nanotechnol. 2012, 3, 513–523, doi:10.3762/bjnano.3.59

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  • surface of the nanosheets. The corresponding TEM image (see Figure 2b) reveals that these nanowalls are 3–5 nm in thickness and 25–30 nm in diameter. The high-resolution TEM (HRTEM) image (Figure 2c) and the selected-area electron diffraction pattern (Figure 2d) confirms the formation of the cubic Mn2O3
  • phase. The observed interlattice spacing of 0.470 nm in the HRTEM corresponds to the (200) planes of the cubic Mn2O3 (JCPDS No. 41-1442) phase. The formation of graphene is confirmed using Raman spectroscopy (see Supporting Information File 1, Figure S1a). The Raman spectra of the samples show that the
  • ). The SAED pattern (see Figure 5c) obtained for these nanoparticles indicates that they are cubic LiMn2O4 (JCPDS No. 35-0782), which is consistent with the XRD results. The HRTEM image (see Figure 5d) shows that these LiMn2O4 nanoparticles are polycrystalline with grain sizes in the range of 3–10 nm
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Published 17 Jul 2012

Magnetic-Fe/Fe3O4-nanoparticle-bound SN38 as carboxylesterase-cleavable prodrug for the delivery to tumors within monocytes/macrophages

  • Hongwang Wang,
  • Tej B. Shrestha,
  • Matthew T. Basel,
  • Raj K. Dani,
  • Gwi-Moon Seo,
  • Sivasai Balivada,
  • Marla M. Pyle,
  • Heidy Prock,
  • Olga B. Koper,
  • Prem S. Thapa,
  • David Moore,
  • Ping Li,
  • Viktor Chikan,
  • Deryl L. Troyer and
  • Stefan H. Bossmann

Beilstein J. Nanotechnol. 2012, 3, 444–455, doi:10.3762/bjnano.3.51

Graphical Abstract
  • revealed by high-resolution transmission electron microscopy (HRTEM) (Figure 1c and Figure 1d), the SN38 loaded Fe/Fe3O4 nanoparticles are crystalline with distinct lattice fringes. Figure 2 shows the powder X-ray diffraction (XRD) pattern of SN38-loaded Fe/Fe3O4 magnetic nanoparticles. Highly crystalline
  • Mo/Ma-cell-delivered thermochemotherapy. TEM of the core/shell Fe/Fe3O4 nanoparticles: (a) freshly synthesized MNPs; (b) MNP-SN38; (c) HRTEM of MNP; (d) HRTEM of MNP-SN38. (Note that the dark spots in a and b result from the presence of multiple layers.) Powder XRD patterns of MNP-SN38. Fluorescence
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Published 13 Jun 2012

Template-assisted formation of microsized nanocrystalline CeO2 tubes and their catalytic performance in the carboxylation of methanol

  • Jörg J. Schneider,
  • Meike Naumann,
  • Christian Schäfer,
  • Armin Brandner,
  • Heiko J. Hofmann and
  • Peter Claus

Beilstein J. Nanotechnol. 2011, 2, 776–784, doi:10.3762/bjnano.2.86

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  • diameter of ca. 0.75 µm, composed of nanocrystalline agglomerated ceria particles were thus obtained. The 1-D ceramic ceria material was characterized by X-ray diffraction, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), UV–vis and photoluminescence
  • agreement with the ceria particle size obtained from the HRTEM studies but significantly larger than that observed for the ceria material obtained without Pluronic P123® surfactant. Again the only phase observed in the XRD is the crystalline cubic-fluorite-type phase of CeO2. To study the thermal processing
  • . Samples were fabricated, using PMMA fibre templates, coated with a ceria sol containing surfactant Pluronic P123®. TEM (left) and HRTEM (right) images of nanostructured ceria thin film interconnecting the ceria tubes (with addition of Pluronic P123® to the sol) at different magnifications. XRD spectra of
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Published 30 Nov 2011
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