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1.942 Aktuelle Fachpublikationen zum Thema temperature

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The spontaneous room temperature reduction of HAuCl4 in ethylene glycol in the presence of ZnO: a simple strategy to obtain stable Au/ZnO nanostructures exhibiting strong surface plasmon resonance and efficient electron storage properties

25.11.2014 | Matías E. Aguirre; Gonzalo Perelstein; Armin Feldhoff; Adriana Condó; Alfredo J. Tolley; María A. Grela, New Journal of Chemistry, 2014

The room temperature spontaneous reduction of HAuCl4 in ethylene glycol in the presence of pre-formed ZnO nanoparticles is investigated by UV-vis spectroscopy. Analysis by HRTEM demonstrated that the synthesized nanostructures consist of small ZnO nanoparticles (5.0 nm) in contact with bigger (15 ...

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Tuning the size and shape of nano-boehmites by a free-additive hydrothermal method

25.11.2014 | Pablo Pardo; Noemí Montoya; Javier Alarcón, CrystEngComm, 2014

A synthetic procedure allowing the control of boehmite micro and nanoparticles is presented. The proposed hydrothermal synthetic procedure is based on the control of three reaction parameters, the pH and temperature of precipitation of xerogels and the water/xerogel ratio for the hydrothermal ...

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Energy efficient microwave synthesis of mesoporous Ce0.5M0.5O2 (Ti, Zr, Hf) nanoparticles for low temperature CO Oxidation in an ionic liquid – a comperative study

25.11.2014 | Anja-Verena Mudring; Tarek Alammar; Kit Chow, New Journal of Chemistry, 2014

Ce0.5M0.5O2 (M=Ti,Zr, Hf) nanoparticles have been successfully synthesized by microwave irradiation in the ionic liquid [C4mim][Tf2N] (1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide). The morphology, crystallinity, and chemical composition of the obtained materials were ...

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Solution Polymeric Optical Temperature Sensors with Long‐Term Memory Function Powered by Supramolecular Chemistry

20.11.2014 | Victor R. de la Rosa, Richard Hoogenboom, Chemistry - A European Journal, 2014

Abstract A poly[(2‐ethyl‐2‐oxazoline)‐ran‐(2‐nonyl‐2‐oxazoline)] copolymer in combination with hydroxypropylated cyclodextrins has been demonstrated to lead to a supramolecular self‐assembly process that results in the formation of kinetically trapped thermoresponsive nanoparticles. Selection ...

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External stimulus‐responsive interfaces in polymer nanocomposites

19.11.2014 | Meriane Cristine dos Santos, Patrícia S. Oliveira Patricio, Rodrigo Lambert Oréfice, Polymer Composites, 2014

Materials that can switch from stiff to soft or from brittle to tough by slightly changing the temperature, pH, electric, or magnetic fields of their environments, can have a pronounced impact on many applications, including sensors, biomedical materials for less invasive surgeries, and ...

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Glycine–Nitrate Process for the Elaboration of Eu3+‐Doped Gd2O3 Bimodal Nanoparticles for Biomedical Applications

18.11.2014 | Graziella Goglio, Gaganpreet Kaur, Sonia L. C. Pinho, Nicolas Penin, Alexia Blandino, Carlos F. G. C. Geraldes, Alai ..., European Journal of Inorganic Chemistry, 2014

Abstract Monoclinic and cubic europium‐doped Gd2O3 structures were selectively synthesized by the glycine–nitrate process by fine control of the synthesis temperature through the crucial fuel/oxidant ratio. The cubic phase is obtained under fuel‐rich conditions, whereas stoichiometric ...

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Simulations of electromechanical shape transformations of Au nanoparticles

18.11.2014 | Vahur Zadin, Arkady V. Krasheninnikov, Flyura Djurabekova, Kai Nordlund, physica status solidi (b), 2014

Metallic nanocrystals can exhibit intriguing properties due to large surfaces specific for low‐dimensional objects. Recent experimental observation showed an interesting shape transformation of Au nanoparticle during simultaneous mechanical and electrical load. By applying finite element ...

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The spontaneous room temperature reduction of HAuCl4 in ethylene glycol in the presence of ZnO : a simple strategy to obtain stable Au/ZnO nanostructures exhibiting strong surface plasmon resonance and efficient electron storage properties

18.11.2014 | Matias Ezequiel Aguirre; Gonzalo Martin Perelstein; Armin Feldhoff; A. M. Condó; Alfredo Tolley; María A. Grela, New Journal of Chemistry, 2014

The room temperature spontaneous reduction of HAuCl4 in ethylene glycol in the presence of pre-formed ZnO nanoparticles is investigated by UV-vis spectroscopy. Analysis by HRTEM demonstrated that the synthesized nanostructures consist of small ZnO nanoparticles (5.0 nm) in contact with bigger (15 ...

mehr

Characterization and photocatalytic activity of mesoporous TiO2 prepared from an ethanol–diethyl ether binary solvent system

16.11.2014 | Author(s): Wei Wang , Liang Dong , Jinpeng Wang , Xiaomeng Shi , Shiyan Han, Chemical Physics Letters, 2014

Publication date: 25 November 2014 Source:Chemical Physics Letters, Volumes 616–617 Author(s): Wei Wang , Liang Dong , Jinpeng Wang , Xiaomeng Shi , Shiyan Han Mesoporous TiO2 nanoparticles were prepared via a sol–gel process using tetra-n-butyl titanate as a titanium source and ...

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Superior Ion‐Conducting Hybrid Solid Electrolyte for All‐Solid‐State Batteries

13.11.2014 | Jae‐Kwang Kim, Johan Scheers, Tae Joo Park, Youngsik Kim, ChemSusChem, 2014

Abstract Herein, we developed a high‐performance lithium ion conducting hybrid solid electrolyte, consisted of LiTFSI salt, Py14TFSI ionic liquid, and TiO2 nanoparticles. The hybrid solid electrolyte prepared by a facile method had high room temperature ionic conductivity, excellent thermal ...

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