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41.212 Aktuelle Fachpublikationen zum Thema temperature

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Remarkable Distinctions in the Heat-induced Phase Transition Processes of Two Poly(2-isopropyl-2-oxazoline)-based Mixed Aqueous Solutions

03.03.2015 | Tianjiao LI; Hui Tang; peiyi wu, Soft Matter, 2015

Detailed phase transition processes of poly (2-isopropyl-2-oxazoline) (PIPOZ)/ Poly (N-isopropylacrylamide) (PNIPAM) and PIPOZ/ poly (N-vinylcaprolactam) (PVCL) mixtures in aqueous solution were investigated by DSC, temperature-variable 1H-NMR, optical microscopy and FT-IR spectroscopy ...


Oxidation of germa- and stanna-closo-dodecaborate

03.03.2015 | Torben Gädt; Jörg-Alexander Dimmer; Sebastian Fleischhauer; Anita Frank; Claudia Nickl; Tobias Wütz; Klaus Eichele; ..., Dalton Transactions, 2015

The oxidation of closo-heteroborates [GeB11H11]2− and [SnB11H11]2− is presented. Upon oxidation germa-closo-dodecaborate yields a symmetrical dimer exhibiting a Ge–Ge bond between two clusters. This dimer shows sulphur insertion into the Ge–Ge bond at room temperature. In contrast, oxidation of ...


Effects of temperature on the preparation and characteristics hydroxyapatite and their adsorptive properties toward lead

03.03.2015 | Hana EL KHAL; Narjès Batis, New Journal of Chemistry, 2015

Hydroxyapatite (HAp), [Ca10(PO4)6(OH)2] was successfully synthesized by combustion method in the aqueous system containing calcium nitrate, di-ammonium phosphate and urea. The effect of calcination temperatures on composition of the HAp phase was studied using XRD, FTIR, ATD/ATG, and N2 ...


Oxygen nonstoichiometry and thermodynamic characterization of Zr doped ceria in the 1573–1773 K temperature range

03.03.2015 | M. Takacs; J. R. Scheffe; A. Steinfeld, Physical Chemistry Chemical Physics, 2015

This work encompasses the thermodynamic characterization and critical evaluation of Zr4+ doped ceria, a promising redox material for the two-step solar thermochemical splitting of H2O and CO2 to H2 and CO. As a case study, we experimentally examine 5 mol% Zr4+ doped ceria and present oxygen ...


Glassy dynamics of Poly(2-Vinyl-Pyridine) brushes with varying grafting density

02.03.2015 | Nils Neubauer; René Winkler; Martin Tress; Petra Uhlmann; Manfred Reiche; Wycliffe Kipnusu; Friedrich Kremer, Soft Matter, 2015

The molecular dynamics of poly(2-vinyl-pyridine) (P2VP) brushes is measured by Broadband Dielectric Spectroscopy (BDS) in a wide temperature (250K – 440K) and broad spectral (0.1 Hz – 1 MHz) range. This is realized using nanostructured highly conductive silicon electrodes being separated by ...


Mechanism of hydrogen treatment in KTiOPO4 crystals at high temperature: Experimental and first-principles studies

02.03.2015 | Yang Zhang; Yanhua Leng; Jian Liu; Nianjing Ji; Xiulan Duan; Jing Li; Xian Zhao; jiyang wang; Huaidong Jiang, CrystEngComm, 2015

Hydrogen annealing experiments on KTiOPO4 (KTP) crystals with different temperatures, times and hydrogen concentrations were conducted in an atmospheric furnace. Theoretically, in order to analyze the reaction mechanisms of KTP under high temperature hydrogen annealing, the electronic structure, ...


3+1)-Dimensional commensurately modulated structure and photoluminescence properties of diborate KSbOB2O5

02.03.2015 | Dan Zhao; Rong-Hua Zhang; Fei-Fei Li; Juan Yang; Bing-Guo Liu; Yun-Chang Fan, Dalton Transactions, 2015

ingle-crystal of diborate KSbOB2O5 has been prepared under high temperature molten-salt method and its structure has been determined by single crystal X-ray diffraction analysis. Diffraction pattern show strong main reflections and weak satellite reflections, clearly indicating a modulated ...


Label-free immunosensor based on Au@Ag2S nanoparticles/magnetic chitosan matrix for sensitive determination of ractopamine

01.03.2015 | Author(s): Yong Zhang , Hongmin Ma , Dan Wu , Yan Li , Bin Du , Qin Wei, Journal of Electroanalytical Chemistry, 2015

Publication date: 15 March 2015 Source:Journal of Electroanalytical Chemistry, Volume 741 Author(s): Yong Zhang , Hongmin Ma , Dan Wu , Yan Li , Bin Du , Qin Wei A label-free electrochemical immunosensor for sensitive determination of ractopamine (RAC) based on Au@Ag2S core@shell ...


On the activation energy of the formic acid oxidation reaction on platinum electrodes

01.03.2015 | Author(s): Juan V. Perales-Rondón , Enrique Herrero , Juan M. Feliu, Journal of Electroanalytical Chemistry, 2015

Publication date: 1 April 2015 Source:Journal of Electroanalytical Chemistry, Volume 742 Author(s): Juan V. Perales-Rondón , Enrique Herrero , Juan M. Feliu A temperature dependent study on the formic acid oxidation reaction has been carried out in order to determine the activation ...


Flexible Thermoelectric Fabrics Based on Self-assembled Tellurium Nanorods with a Large Power Factor

01.03.2015 | Chaochao Dun; Corey Hewitt; Huihui Huang; David Montgomery; Junwei Xu; Dave Carroll, Physical Chemistry Chemical Physics, 2015

Highly-flexible thermoelectric fabrics were fabricated based on a layered structure, composed of a thin active layer of self-assembled tellurium nanorods and a substrate layer of polyvinylidene fluoride. The resulting thermoelectric fabrics show a high room temperature power factor of 45.8 ...


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