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2.023 Aktuelle Fachpublikationen zum Thema temperature

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Study on the enhanced electrochemical performance of LiMn2O4 cathode material at 55°C by the nano Ag-coating

22.03.2015 | Author(s): Rongyan Jiang , Congying Cui , Houyi Ma , Hongfang Ma , Ting Chen, Journal of Electroanalytical Chemistry, 2015

Publication date: 1 May 2015 Source:Journal of Electroanalytical Chemistry, Volume 744 Author(s): Rongyan Jiang , Congying Cui , Houyi Ma , Hongfang Ma , Ting Chen In this paper, the nano-sized Ag particles were coated on the surfaces of the spinel LiMn2O4 nanoparticles through a ...

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Iron oxide superparamagnetic nanocarriers bearing amphiphilic N‐heterocyclic choline analogues as potential antimicrobial agents

21.03.2015 | Alla Zablotskaya, Izolda Segal, Yuris Popelis, Anatoly Mishnev, Mikhail Maiorov, Dmitry Zablotsky, Elmars Blums, Viz ..., Applied Organometallic Chemistry, 2015

Magnetic nanoparticles represent an advanced tool in biomedicine because they can be simultaneously functionalized and guided using a magnetic field. Iron oxide magnetic nanoparticles precoated with oleic acid and bearing novel antimicrobial N‐heterocyclic choline analogues, namely O‐, N‐ and ...

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Nitridation of Silicon Powders Catalyzed by Cobalt Nanoparticles

21.03.2015 | Yajun Gu, Lilin Lu, Haijun Zhang, Yingnan Cao, Faliang Li, Shaowei Zhang, Journal of the American Ceramic Society, 2015

The effect of Co nanoparticles (NPs) on the nitridation of silicon (Si) was studied. Co NPs were deposited homogeneously on the surfaces of Si powders using an in situ reduction method using NaBH4 as a reducing reagent. Si powders impregnated with 0.5–2.0 wt% Co NPs were nitrided in ...

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Materials, Vol. 8, Pages 1249-1263: Gas-Phase Deposition of Ultrathin Aluminium Oxide Films on Nanoparticles at Ambient Conditions

19.03.2015 | Valdesueiro, David ; Meesters, Gabrie M. H.; Kreutzer, Michiel T.; van Ommen, J. Ruud, Materials, 2015

We have deposited aluminium oxide films by atomic layer deposition on titanium oxide nanoparticles in a fluidized bed reactor at 27 ± 3 °C and atmospheric pressure. Working at room temperature allows coating heat-sensitive materials, while working at atmospheric pressure would simplify the ...

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When Nanoparticles Meet Poly(Ionic Liquid)s: Chemoresistive CO2 Sensing at Room Temperature

16.03.2015 | Christoph Willa, Jiayin Yuan, Markus Niederberger, Dorota Koziej, Advanced Functional Materials, 2015

Tetraalkylammonium‐based poly(ionic liquid)s (PILs) are able to absorb particularly large amounts of CO2; thus are considered up‐and‐coming materials in applications ranging from sensing, separation, to storage of CO2. To meet the requirements of practical usage, their chemical activity has to ...

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Influence of thermal annealing on the structural and optical properties of maghemite (γ‐Fe2O3) nanoparticle thin films

13.03.2015 | Ehsan Parsianpour, Mohammad Gholami, Nima Shahbazi, Feridoun Samavat, Surface and Interface Analysis, 2015

In this study, maghemite (γ‐Fe2O3) nanoparticles were initially synthesized via chemical co‐precipitation and then deposited by spray pyrolysis as thin films on white glass substrates. The thin films were annealed for 8 h at 400, 450, 500, 550, and 600 °C in an oven. The structural studies of ...

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Creating Nanoparticle Stability in Ionic Liquid [C4mim][BF4] by Inducing Solvation Layering

13.03.2015 | Jingsi Gao; Rose S. Ndong; Mark B. Shiflett; Norman J. Wagner, ACS Nano, 2015

The critical role of solvation forces in dispersing and stabilizing nanoparticles and colloids in 1-butyl-3-methylimidazolium tetrafluoroborate [C4mim][BF4] is demonstrated. Stable silica nanoparticle suspensions over 60 wt % solids are achieved by particle surface chemical functionalization with ...

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Effects of poly(ethylene glycol) grafted silica nanoparticle on crystallization behaviors of poly(D‐lactide)

12.03.2015 | Zuoning Wang, Shuang Xia, Hong Chen, Song Wang, Kangming Nie, Zhibo Li, Polymer International, 2015

Abstract A series of biodegradable poly(D‐lactide) (PDLA) nanocomposites filled with silica nanoparticles with different surface characteristics were prepared via solvent casting method. The crystallization behaviors of PDLA were investigated at different temperature. For these hybrid ...

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Removal of Thiol Ligands from Surface-Confined Nanoparticles without Particle Growth or Desorption

12.03.2015 | Edward W. Elliott, III; Richard D. Glover; James E. Hutchison, ACS Nano, 2015

Size-dependent properties of surface-confined inorganic nanostructures are of interest for applications ranging from sensing to catalysis and energy production. Ligand-stabilized nanoparticles are attractive precursors for producing such nanostructures because the stabilizing ligands may be used ...

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Materials, Vol. 8, Pages 1027-1042: Precursor-Less Coating of Nanoparticles in the Gas Phase

11.03.2015 | Pfeiffer, Tobias V.; Kedia, Puneet ; Messing, Maria E.; Valvo, Mario ; Schmidt-Ott, Andreas, Materials, 2015

This article introduces a continuous, gas-phase method for depositing thin metallic coatings onto (nano)particles using a type of physical vapor deposition (PVD) at ambient pressure and temperature. An aerosol of core particles is mixed with a metal vapor cloud formed by spark ablation by passing ...

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