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2.351 Aktuelle Fachpublikationen zum Thema temperature

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Chemical synthesis of germanium nanoparticles with uniform size as anode materials for lithium ion batteries

02.02.2016 | Liangbiao Wang; Keyan Bao; Zhengsong Lou; Guobing Liang; Quanfa Zhou, Dalton Transactions, 2016

A simple Mg-thermal reduction reaction is reported to synthesize germanium (Ge) nanoparticles with a uniform size at a low temperature of 400 °C in an autoclave. The as-prepared Ge nanoparticles exhibit promising anode applications in lithium ion batteries with high capacity and excellent cycling ...

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Hydrothermal synthesis and photocatalytic properties of pyrochlore Sm2Zr2O7 nanoparticles

31.01.2016 | Author(s): Qi Wang, Xingwang Cheng, Jingbo Li, Haibo Jin, Journal of Photochemistry and Photobiology A: Chemistry, 2016

Publication date: 1 May 2016 Source:Journal of Photochemistry and Photobiology A: Chemistry, Volume 321 Author(s): Qi Wang, Xingwang Cheng, Jingbo Li, Haibo Jin Pyrochlore Sm2Zr2O7 nanoparticles were synthesized by a facile hydrothermal method and their photocatalytic properties ...

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Aligned Single-Walled Carbon Nanotube Arrays from Rhodium Catalysts with Unexpected Diameter Uniformity Independent of the Catalyst Size and Growth Temperature

29.01.2016 | Pan Li; Xiao Zhang; Jie Liu, Chemistry of Materials, 2016

Diameter control in the synthesis of single-walled carbon nanotube (SWNT) arrays is vital to the control of their properties and their integration into practical devices. Controlling the size of catalyst nanoparticles (NPs) and following a tangential nucleation mode has been shown to be an ...

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Hydrothermal Synthesis of TiO2@SnO2 Hybrid Nanoparticles in a Continuous‐Flow Dual‐Stage Reactor

28.01.2016 | Henrik L. Hellstern, Martin Bremholm, Aref Mamakhel, Jacob Becker, Bo B. Iversen, ChemSusChem, 2016

Abstract TiO2@SnO2 hybrid nanocomposites were successfully prepared in gram scale using a dual‐stage hydrothermal continuous‐flow reactor. Temperature and pH in the secondary reactor were found to selectively direct nucleation and growth of the secondary material into either heterogeneous ...

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Gasoline desulfurization by a TiO2‐filled ethyl cellulose pervaporation membrane

27.01.2016 | Yingfei Hou, Min Liu, Yiqing Huang, Lili Zhao, Jinfeng Wang, Qiang Cheng, Qingshan Niu, Journal of Applied Polymer Science, 2016

ABSTRACT The TiO2 nanoparticles were incorporated into an ethyl cellulose (EC) matrix to improve the pervaporation (PV) performance of the membrane for gasoline desulfurization. The microstructures of different EC membranes were characterized by scanning electron microscopy, Fourier transform ...

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Enantioselective aerobic oxidation of olefins by magnetite nanoparticles at room temperature: a chiral carboxylic acid strategy

27.01.2016 | Leila Hadian-Dehkordi; Hassan Hosseini-Monfared, Green Chemistry, 2016

Asymmetric oxidations of organic compounds are limited in their synthetic scope and by practical factors, such as the use of complex catalyst synthesis. A simple and cheap nanostructured catalyst system comprising magnetite nanoparticles stabilized by l-(+)-tartaric acid (Fe3O4/tart-NPs) was ...

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Dewetting dynamics of a gold film on graphene: implications for nanoparticle formation

26.01.2016 | Sadanandam Namsani; Jayant K. Singh, Faraday Discussions, 2016

The dynamics of dewetting of gold films on graphene surfaces is investigated using molecular dynamics simulation. The effect of temperature (973–1533 K), film diameter (30–40 nm) and film thickness (0.5–3 nm) on the dewetting mechanism, leading to the formation of nanoparticles, is reported. The ...

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Formation of Small Gold Nanoparticle Chains with High NIR Extinction through Bridging with Calcium Ions

25.01.2016 | Robert J. Stover; Ehsan Moaseri; Sai P. Gourisankar; Muhammad Iqbal; Negin K. Rahbar; Behzad Changalvaie; Thomas M. ..., Langmuir, 2016

The self-assembly of citrate-capped Au nanoparticles (5 nm) resulted in branched nanochains by adding CaCl2 versus spherical nanoclusters for NaCl. These assemblies were formed between 1 s to 30 min by tuning the electrostatic repulsion and the interparticle bridging attraction between the ...

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Preparation of PVDF/CaCO3 hybrid hollow fiber membranes for direct contact membrane distillation through TIPS method

23.01.2016 | Yang Song, Ziyi Wang, Qin Wang, Baoan Li, Benhe Zhong, Journal of Applied Polymer Science, 2016

ABSTRACT Poly(vinylidene fluoride) (PVDF)–CaCO3 hybrid hollow fiber membranes with a cellular structure and prominent permeability were fabricated via the thermally induced phase separation method for membrane distillation. CaCO3 nanoparticles were introduced to the casting solution to improve ...

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Surfactant‐directed morphology of cross‐linked styrene‐ or vinylbenzyl chloride‐based materials

21.01.2016 | Melpo Karamitrou, Efi Sarpaki, Georgios Bokias, Journal of Applied Polymer Science, 2016

ABSTRACT Polystyrene (PSt) or poly(vinylbenzyl chloride) (PVBC) crosslinked with divinylbenzyl (DVB) materials were synthesized through free radical polymerization into templates formed by the surfactant polyoxyethylene (4) lauryl ether (Brij‐30). The chemical composition of the final products ...

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