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1.935 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

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 ...

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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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ChemInform Abstract: Mg2SiO4:Tb3+ Nanophosphor: Auto Ignition Route and Near UV Excited Photoluminescence Properties for WLEDs.

13.11.2014 | Ramachandra Naik, S. C. Prashantha, H. Nagabhushana, H. P. Nagaswarupa, K. S. Anantharaju, S. C. Sharma, B. M. Nagab ..., ChemInform, 2014

Abstract Nanoparticles of Tb3+ doped (1—11 mol%) Mg2SiO4 are prepared by low temperature solution combustion with stoichiometric amounts of Mg(NO3)2 and fumed SiO2 as precursor and oxalyl di‐hydrazide (ODH) as fuel.

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Anomalous Diffusion in Thermoresponsive Polymer–Clay Composite Hydrogels Probed by Wide-Field Fluorescence Microscopy

13.11.2014 | Beate Stempfle; Anna Große; Bernhard Ferse; Karl-Friedrich Arndt; Dominik Wöll, Langmuir, 2014

Thermoresponsive materials exhibit an enormous potential for tissue engineering, separation systems, and drug delivery. We investigated the diffusion of laponite clay nanoparticles, which serve as physical cross-linkers to achieve improved material properties in poly(N-isopropylacrylamide) ...

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Number and Size Distribution of Airborne Nanoparticles during Summertime in Kuwait: First Observations from the Middle East

13.11.2014 | Abdullah N. Al-Dabbous; Prashant Kumar, Environmental Science & Technology, 2014

We made fast response measurements of size-resolved particle number concentrations (PNCs) and distributions (PNDs) in the 5–1000 nm range close to a busy roadside, continuously for 31 days, in Kuwait. The aims were to understand their dispersion characteristics during summertime and dust events, ...

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Nanocrystalline Pt-CeO2 as an efficient catalyst for a room temperature selective reduction of nitroarenes

12.11.2014 | Astha Shukla; Rajib Kumar Singha; Takehiko Sasaki; Rajaram Bal, Green Chemistry, 2014

We have developed a new synthesis strategy to prepare Pt nanoparticles with size between 2 and 5 nm supported on CeO2 nanoparticles with size between 30 and 60 nm by the hydrothermal method in the presence of the surfactant cetyltrimethyl ammonium bromide (CTAB) and a polymer (PVP). It was found ...

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Solution Synthesis of Metal Silicide Nanoparticles

12.11.2014 | Joshua M. McEnaney; Raymond E. Schaak, Inorganic Chemistry, 2014

Transition-metal silicides are part of an important family of intermetallic compounds, but the high-temperature reactions that are generally required to synthesize them preclude the formation of colloidal nanoparticles. Here, we show that palladium, copper, and nickel nanoparticles react with ...

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Hydrogen induced p-phosphonic acid calix[8]arene controlled growth of Ru, Pt and Pd nanoparticles

11.11.2014 | Wenzhe Zang; Xianjue Chen; Ramiz A. Boulos; Jeremiah Toster; Colin L. Raston, Chemical Communication, 2014

Monodispersed Ru, Pt and Pd nanoparticles with narrow size distributions (2, 12 and 20 nm respectively) have been synthesised via bubbling hydrogen gas into aqueous solutions of the noble metal ions in the presence of p-phosphonic acid calix[8]arene, at room temperature. Molecular modelling of ...

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An Efficient Nanoscale Heterogeneous Catalyst for the Capture and Conversion of Carbon Dioxide at Ambient Pressure

10.11.2014 | Xiao‐Huan Liu, Jian‐Gong Ma, Zheng Niu, Guang‐Ming Yang, Peng Cheng, Angewandte Chemie, 2014

Abstract Silver nanoparticles were successfully supported on the zeolite‐type metal–organic framework MIL‐101 to yield Ag@MIL‐101 by a simple liquid impregnation method. For the first time, the conversion of terminal alkynes into propiolic acids with CO2 was achieved by the use of the ...

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