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Search for "thermal stability" in Full Text gives 219 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Hierarchically structured nanoporous carbon tubes for high pressure carbon dioxide adsorption

  • Julia Patzsch,
  • Deepu J. Babu and
  • Jörg J. Schneider

Beilstein J. Nanotechnol. 2017, 8, 1135–1144, doi:10.3762/bjnano.8.115

Graphical Abstract
  • successfully tested as potential material for catalysis [1], gas sensors [2], electronic devices [3] and for gas adsorption [4]. Activated carbons (ACs) are widely used for gas adsorption because of their straightforward production, low cost and thermal stability [5][6][7]. Nevertheless, the excellent
  • under oxygen atmosphere (Figure 5) using thermal gravimetric analysis. The decomposition starts at about 530 °C indicating a high thermal stability of the carbon material. The carbon tubes (4) do not decompose completely even at temperatures of 800 °C. A ceramic residue (6.5%) remains as a white powder
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Published 24 May 2017

Fully scalable one-pot method for the production of phosphonic graphene derivatives

  • Kamila Żelechowska,
  • Marta Prześniak-Welenc,
  • Marcin Łapiński,
  • Izabela Kondratowicz and
  • Tadeusz Miruszewski

Beilstein J. Nanotechnol. 2017, 8, 1094–1103, doi:10.3762/bjnano.8.111

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  • hazardous waste. Finally, after ball milling for two days the resultant carbonaceous material is rather high-surface-area graphite than graphene. Thermogravimetric (TG) analysis with differential scanning calorimetry (DSC) provided information about thermal stability of GO and GO-P and allowed for an
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Published 18 May 2017

Structural properties and thermal stability of cobalt- and chromium-doped α-MnO2 nanorods

  • Romana Cerc Korošec,
  • Polona Umek,
  • Alexandre Gloter,
  • Jana Padežnik Gomilšek and
  • Peter Bukovec

Beilstein J. Nanotechnol. 2017, 8, 1032–1042, doi:10.3762/bjnano.8.104

Graphical Abstract
  • cryptomelane samples exhibit a higher thermal stability than undoped ones. For instance, doping with tin and cobalt shifted the reduction of α-MnO2 to Mn2O3 from 500–550 °C (undoped sample) to 850–900 °C [19][20]. This was ascribed to the incorporation of dopant ions into tunnels stabilizing the structure [19
  • of K+ ions and also decreased thermal stability [8]. Undoped materials also possess a higher thermal stability than materials doped with one or more elements of Fe3+, Cu2+, Mo6+, V5+ with the exception of that doped only with Fe3+, which shows the same stability as the undoped samples [14][21]. The
  • introduction of silver ions into the cryptomelane structure also lowered thermal stability due to a partial distortion of the regular channel-like structure [22]. The influence of doping the pristine material with different ions on its thermal stability is quite complex. When an ion of higher valence (3+, 2
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Published 10 May 2017

Vapor-phase-synthesized fluoroacrylate polymer thin films: thermal stability and structural properties

  • Paul Christian and
  • Anna Maria Coclite

Beilstein J. Nanotechnol. 2017, 8, 933–942, doi:10.3762/bjnano.8.95

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  • hysteresis between advancing and receding contact angle [14]. The advantage of cross-linking with EGDMA is the elimination of the annealing step, resulting in a cross-linked film already in the as-deposited form. The thermal stability of the thin films was evaluated by ellipsometry, Fourier transform
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Published 26 Apr 2017

Triptycene-terminated thiolate and selenolate monolayers on Au(111)

  • Jinxuan Liu,
  • Martin Kind,
  • Björn Schüpbach,
  • Daniel Käfer,
  • Stefanie Winkler,
  • Wenhua Zhang,
  • Andreas Terfort and
  • Christof Wöll

Beilstein J. Nanotechnol. 2017, 8, 892–905, doi:10.3762/bjnano.8.91

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  • group have an impact on the thermal stability of the monolayers. The selenolate SAMs are more stable than their thiolate counterparts (by 0.13 eV in case of Trp0Se vs Trp0S and by ≈0.06 eV in case of Trp1Se vs Trp1S). This finding reflects that the Se–Au binding energy is higher than the one of the S–Au
  • identified to be an important parameter in SURMOF liquid epitaxial growth [3][21]. The higher thermal stability of the selenium anchor group compared to the one of the sulfur anchor group enables triptycene-selenolate SAMs to push the upper temperature limit available for SURMOF growth. We believe that these
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Published 20 Apr 2017

First examples of organosilica-based ionogels: synthesis and electrochemical behavior

  • Andreas Taubert,
  • Ruben Löbbicke,
  • Barbara Kirchner and
  • Fabrice Leroux

Beilstein J. Nanotechnol. 2017, 8, 736–751, doi:10.3762/bjnano.8.77

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  • interesting for intermediate temperature fuel cells operating above ca. 80 °C. At this point, conventional Nafion membranes dry out and lose the ability for proton conduction [9]. Due to their relatively high thermal stability, high ionic conductivity, and low vapor pressure, many ILs can overcome this
  • (ii) efficient stabilization of the (highly viscous) liquid phase over extended periods of time. As a result, [BmimSO3H][PTS] is a viable candidate for use in membranes, especially when considering the simple, near quantitative synthesis (Figure 7) and the high thermal stability of the IL (Figure 10
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Published 29 Mar 2017

Synthesis of graphene–transition metal oxide hybrid nanoparticles and their application in various fields

  • Arpita Jana,
  • Elke Scheer and
  • Sebastian Polarz

Beilstein J. Nanotechnol. 2017, 8, 688–714, doi:10.3762/bjnano.8.74

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  • of 12.1% with excellent thermal stability [209]. Cuprous oxide (Cu2O) is a p-type semiconductor and is used for solar energy conversion, as sensors and for photocatalytic degradation. The controlled synthesis of Cu2O results in a vast palette of architectures including nanocubes, nanocages, nanowires
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Published 24 Mar 2017

Carbon nanotube-wrapped Fe2O3 anode with improved performance for lithium-ion batteries

  • Guoliang Gao,
  • Yan Jin,
  • Qun Zeng,
  • Deyu Wang and
  • Cai Shen

Beilstein J. Nanotechnol. 2017, 8, 649–656, doi:10.3762/bjnano.8.69

Graphical Abstract
  • the Fe2O3 nanoparticles. Smaller secondary particles are clearly observed. The measured (110) lattice spacing is 0.25 nm, which is in agreement with [35]. The thermal stability of the as-prepared Fe2O3/COOH-MWCNT composites was measured using a thermogravimetric analyzer. Thermogravimetric analysis
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Published 17 Mar 2017

Dispersion of single-wall carbon nanotubes with supramolecular Congo red – properties of the complexes and mechanism of the interaction

  • Anna Jagusiak,
  • Barbara Piekarska,
  • Tomasz Pańczyk,
  • Małgorzata Jemioła-Rzemińska,
  • Elżbieta Bielańska,
  • Barbara Stopa,
  • Grzegorz Zemanek,
  • Janina Rybarska,
  • Irena Roterman and
  • Leszek Konieczny

Beilstein J. Nanotechnol. 2017, 8, 636–648, doi:10.3762/bjnano.8.68

Graphical Abstract
  • structure is observed. It probably corresponds to CR molecules being attached indirectly to the nanotube, through face-to-face interaction with CR adhering to the nanotube surface (Figure 6B). Thermal stability of SWNT–CR complexes SWNT–CR complexes (1 mg SWNTs + 1 mL of 2 mg/mL CR, sonicated and filtered
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Published 16 Mar 2017

Gas sensing properties of MWCNT layers electrochemically decorated with Au and Pd nanoparticles

  • Elena Dilonardo,
  • Michele Penza,
  • Marco Alvisi,
  • Riccardo Rossi,
  • Gennaro Cassano,
  • Cinzia Di Franco,
  • Francesco Palmisano,
  • Luisa Torsi and
  • Nicola Cioffi

Beilstein J. Nanotechnol. 2017, 8, 592–603, doi:10.3762/bjnano.8.64

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  • gas detection. Indeed, gas sensor systems have unique properties such as, easy and low-cost production, low operating temperature, electronic and thermal stability, good sensitivity but poor selectivity in gas detection [4]. In this context, the development of nanostructured materials has contributed
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Published 10 Mar 2017

Diffusion and surface alloying of gradient nanostructured metals

  • Zhenbo Wang and
  • Ke Lu

Beilstein J. Nanotechnol. 2017, 8, 547–560, doi:10.3762/bjnano.8.59

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  • . The following process at T2 enhanced the growth (or phase transformation) kinetics of alloyed layers because the thermal stability in the surface layers was improved by the introduced alloying elements and/or compounds during the previous process. The effects of both processes at T1 and at T2 on the
  • [98][99]. They showed unique performance, for example, ultrahigh hardness accompanied by superior thermal stability. Studying the diffusion kinetics and relative behavior in GNS layers with such novel microstructures is expected to help understand their unique features and provide insights on
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Published 03 Mar 2017

Nanostructured carbon materials decorated with organophosphorus moieties: synthesis and application

  • Giacomo Biagiotti,
  • Vittoria Langè,
  • Cristina Ligi,
  • Stefano Caporali,
  • Maurizio Muniz-Miranda,
  • Anna Flis,
  • K. Michał Pietrusiewicz,
  • Giacomo Ghini,
  • Alberto Brandi and
  • Stefano Cicchi

Beilstein J. Nanotechnol. 2017, 8, 485–493, doi:10.3762/bjnano.8.52

Graphical Abstract
  • allotropic species of carbon, fullerene, carbon nanotubes and graphene being the most studied and used. Since their discovery [1][2][3], they have become very attractive for researchers, due to their peculiar physical and chemical proprieties such as chemical and thermal stability, electronic conductivity
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Published 22 Feb 2017

Fiber optic sensors based on hybrid phenyl-silica xerogel films to detect n-hexane: determination of the isosteric enthalpy of adsorption

  • Jesús C. Echeverría,
  • Ignacio Calleja,
  • Paula Moriones and
  • Julián J. Garrido

Beilstein J. Nanotechnol. 2017, 8, 475–484, doi:10.3762/bjnano.8.51

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  • more mechanisms, such as electrostatic, hydrophobic or hydrogen bonding. Films made of hybrid silica materials synthesized by the sol–gel process are well suited for the preparation of sensing elements. These films have chemical and thermal stability, transparency over a wide wavelength range
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Published 21 Feb 2017

Advances in the fabrication of graphene transistors on flexible substrates

  • Gabriele Fisichella,
  • Stella Lo Verso,
  • Silvestra Di Marco,
  • Vincenzo Vinciguerra,
  • Emanuela Schilirò,
  • Salvatore Di Franco,
  • Raffaella Lo Nigro,
  • Fabrizio Roccaforte,
  • Amaia Zurutuza,
  • Alba Centeno,
  • Sebastiano Ravesi and
  • Filippo Giannazzo

Beilstein J. Nanotechnol. 2017, 8, 467–474, doi:10.3762/bjnano.8.50

Graphical Abstract
  • asperities, dielectric inhomogeneity). We started with a thermally flattened PEN Teonex film purchased from Dupont Teiji Films. PEN is an analogous material to poly(ethylene terephthalate) (PET), with superior physical and thermal stability (up to 155 °C), which are advantageous properties for flexible
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Published 20 Feb 2017

Methods for preparing polymer-decorated single exchange-biased magnetic nanoparticles for application in flexible polymer-based films

  • Laurence Ourry,
  • Delphine Toulemon,
  • Souad Ammar and
  • Fayna Mammeri

Beilstein J. Nanotechnol. 2017, 8, 408–417, doi:10.3762/bjnano.8.43

Graphical Abstract
  • size to exhibit the desired properties (e.g., exchange-bias for thermal stability of the magnetization) but also judiciously functionalized to ensure their stability in air and their compatibility with a polymer matrix, in order to avoid aggregation which may seriously affect their physical properties
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Published 09 Feb 2017

Tailoring bifunctional hybrid organic–inorganic nanoadsorbents by the choice of functional layer composition probed by adsorption of Cu2+ ions

  • Veronika V. Tomina,
  • Inna V. Melnyk,
  • Yuriy L. Zub,
  • Aivaras Kareiva,
  • Miroslava Vaclavikova,
  • Gulaim A. Seisenbaeva and
  • Vadim G. Kessler

Beilstein J. Nanotechnol. 2017, 8, 334–347, doi:10.3762/bjnano.8.36

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  • (CH2)3NH2/≡SiCH3, ≡Si(CH2)3NH2/≡Si(CH2)2(CF2)5CF3) surface layers were produced by a one-step approach using a modified Stöber method in three-component alkoxysilane systems, resulting in greatly increased contents of functional components. The content of functional groups and thermal stability of the
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Published 02 Feb 2017

Nanocrystalline ZrO2 and Pt-doped ZrO2 catalysts for low-temperature CO oxidation

  • Amit Singhania and
  • Shipra Mital Gupta

Beilstein J. Nanotechnol. 2017, 8, 264–271, doi:10.3762/bjnano.8.29

Graphical Abstract
  • used as catalyst/support because of its high activity and thermal stability. The advantages also include its inertness under acidic reaction environments [17]. Also, it is reported as a better catalyst and support than many other materials, such as Al2O3, TiO2 and SiO2 [18]. It has been used by
  • 240 °C. These results show a significantly higher catalytic activity for Pt(1%)-ZrO2 compared to ZrO2. It is because of synergic effect between Pt and Zr components, which results in an increase of the oxygen vacancies and the oxygen mobility and also improves the thermal stability. From the XRD
  • vertically fixed quartz reactor, which was maintained at temperature of 90 °C. The stability test results show a constant CO conversion during the test, which indicates the excellent stability of Pt(1%)-ZrO2. The obtained results are due to improvement in thermal stability of the catalyst by the introduction
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Published 26 Jan 2017

Sensitive detection of hydrocarbon gases using electrochemically Pd-modified ZnO chemiresistors

  • Elena Dilonardo,
  • Michele Penza,
  • Marco Alvisi,
  • Gennaro Cassano,
  • Cinzia Di Franco,
  • Francesco Palmisano,
  • Luisa Torsi and
  • Nicola Cioffi

Beilstein J. Nanotechnol. 2017, 8, 82–90, doi:10.3762/bjnano.8.9

Graphical Abstract
  • comparably good gas-sensing performance [21][22]. However, due to their high affinity toward HCs and low thermal stability, they are sometimes unstable and exhibit poor sensitivity [23][24]. In this context, metal oxides (MOx) have been proposed as promising active sensing layers because of their
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Published 10 Jan 2017

Grazing-incidence optical magnetic recording with super-resolution

  • Gunther Scheunert,
  • Sidney. R. Cohen,
  • René Kullock,
  • Ryan McCarron,
  • Katya Rechev,
  • Ifat Kaplan-Ashiri,
  • Ora Bitton,
  • Paul Dawson,
  • Bert Hecht and
  • Dan Oron

Beilstein J. Nanotechnol. 2017, 8, 28–37, doi:10.3762/bjnano.8.4

Graphical Abstract
  • recording media to generate a strong near field for highly-localized inductive heating of the recording layer during the writing process [6][7]. However, as pointed out in a series of recent studies on the thermal stability of these NFTs [8][9][10][11], they are inherently sensitive to thermal degradation
  • layer: depending on their size, the grains have different thermal stability and therefore switch the magnetization direction at different temperatures. The SQUID measurement can only give a coercivity value averaged over all grains, neglecting local variations. Zero-field-cooled (ZFC) thermo
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Published 04 Jan 2017

Annealing-induced recovery of indents in thin Au(Fe) bilayer films

  • Anna Kosinova,
  • Ruth Schwaiger,
  • Leonid Klinger and
  • Eugen Rabkin

Beilstein J. Nanotechnol. 2016, 7, 2088–2099, doi:10.3762/bjnano.7.199

Graphical Abstract
  • introduced by nanoindentation with subsequent annealing, and (ii) to understand the effect of nanoindentation-induced localized plastic deformation on the thermal stability and solid-state dewetting of thin films. In what follows, we will give a short overview of what is known about the recovery of indents
  • of structural defects in the film and improves its thermal stability. The Au layer exhibited a strong [111] out-of-plane texture and two twinning-related in-plane orientations related by a 60° rotation around the surface normal. The Fe underlayer exhibited a strong [110] out-of-plane texture with
  • Au(Fe) thin films. The goals of the present work were to determine the thermal stability of Au(Fe) films containing indentation-induced surface defects, and to establish the mechanisms of indent recovery. The latter goal should be considered in a wider framework of thermo-mechanical processing of
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Published 28 Dec 2016

Effect of nanostructured carbon coatings on the electrochemical performance of Li1.4Ni0.5Mn0.5O2+x-based cathode materials

  • Konstantin A. Kurilenko,
  • Oleg A. Shlyakhtin,
  • Oleg A. Brylev,
  • Dmitry I. Petukhov and
  • Alexey V. Garshev

Beilstein J. Nanotechnol. 2016, 7, 1960–1970, doi:10.3762/bjnano.7.187

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  • intense pyrolysis of the linear PVA at 240–310 °C (Figure 2A) and the continuous decomposition process of the cross-linked PVA at 240–600 °C (Figure 2B). The latter shows a significantly higher thermal stability of the cross-linked polymer. The analysis of differential scanning calorimetry (DSC) curves
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Published 09 Dec 2016

A new approach to grain boundary engineering for nanocrystalline materials

  • Shigeaki Kobayashi,
  • Sadahiro Tsurekawa and
  • Tadao Watanabe

Beilstein J. Nanotechnol. 2016, 7, 1829–1849, doi:10.3762/bjnano.7.176

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  • grain boundaries and triple junctions. This is often associated with the nonequilibrium deformation of microstructures introduced by severe plastic deformation (SPD) with less thermal stability, excess structural defects and chemical composition by segregation to grain boundaries and interfaces [12][15
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Published 25 Nov 2016

Prediction of the mechanical properties of zeolite pellets for aerospace molecular decontamination applications

  • Guillaume Rioland,
  • Patrick Dutournié,
  • Delphine Faye,
  • T. Jean Daou and
  • Joël Patarin

Beilstein J. Nanotechnol. 2016, 7, 1761–1771, doi:10.3762/bjnano.7.169

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  • combination of AlO4 and SiO4 tetrahedra. Zeolites are often used in adsorption and catalytic applications due to their high thermal stability and interesting adsorption properties [9][10][11][12][13][14][15]. Today, 231 different zeolite structures have been discovered, but only some of them are currently
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Published 18 Nov 2016

Analysis of self-heating of thermally assisted spin-transfer torque magnetic random access memory

  • Austin Deschenes,
  • Sadid Muneer,
  • Mustafa Akbulut,
  • Ali Gokirmak and
  • Helena Silva

Beilstein J. Nanotechnol. 2016, 7, 1676–1683, doi:10.3762/bjnano.7.160

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  • material stack the CoFeB layers are the ferromagnetic domains of the MTJ, MgO is the thin insulating layer, and Ta/CoPd/Ru is the synthetic antiferromagnetic layer. The material stack modeled is from a device reported by Worledge et al. [8]. The thermal stability factor of the free ferromagnetic layer of
  • the device, derived from Equation 5 using materials properties from [8][9], is 38.7 kBT: where Δperp is the perpendicular thermal stability factor, Ms is the saturation magnetization, is the perpendicular effective anisotropy field, V is the volume of the free layer, kB is the Boltzmann constant, and
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Published 11 Nov 2016

Viability and proliferation of endothelial cells upon exposure to GaN nanoparticles

  • Tudor Braniste,
  • Ion Tiginyanu,
  • Tibor Horvath,
  • Simion Raevschi,
  • Serghei Cebotari,
  • Marco Lux,
  • Axel Haverich and
  • Andres Hilfiker

Beilstein J. Nanotechnol. 2016, 7, 1330–1337, doi:10.3762/bjnano.7.124

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  • semiconductor material, widely used in optoelectronics, in particular in industrial production of UV solid-state lasers and light-emitting diodes. This material has many remarkable characteristics, including piezoelectric properties, high thermal stability, radiation hardness, and excellent chemical inertness
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Published 23 Sep 2016
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