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12.412 Aktuelle Fachpublikationen zum Thema temperature

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Environment friendly template free microwave synthesis of sub-micron sized hierarchical titania nanostructures and their application in photovoltaics

22.10.2014 | Sofia Javed; Muhammad Aftab Akram; Mohammad Mujahid, CrystEngComm, 2014

A simple low temperature microwave synthesis of hierarchical nanostructures (HNSs) of titania in DI water is reported. A great advantage of the reported method is the production of sub-micron sized HNSs without any surfactant or hydrofluoric acid. The hierarchical morphology provides huge surface ...

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Rapid combustion route to high-performance nanocrystalline cathode materials for Li-ion batteries

21.10.2014 | Keyan Li; Shudong Lin; Fenfen Shua; Jiawei Zhang; Kunfeng Chen; Dongfeng Xue, CrystEngComm, 2014

Nanocrystalline spinel LiMn2O4 and layered LiCo1-xMnxO2 (x = 0-0.15) cathode materials were synthesized by a rapid combustion route in combination with an annealing treatment using common filter paper as template and ethanol as fuel. The structure, morphology and electrochemical properties of the ...

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Mesoporous BN and BCN nanocages with high surface area and spherical morphology

21.10.2014 | Ulka Suryavanshi; Veerappan V. Balasubramanian; Kripal S. Lakhi; Gurudas P. Mane; Katsuhiko Ariga; Jin-Ho Choy; Dae- ..., Physical Chemistry Chemical Physics, 2014

Novel mesoporous BN and BCN materials with cage type porous structure and spherical morphology have been synthesized using carbon nanocages with 3D porous structure as a template via an elemental substitution method at a low synthesis temperature. The obtained materials exhibit a large specific ...

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Growth and characterization of piezoelectric benzil single crystals and its application in microstrip patch antenna

21.10.2014 | Binay Kumar; Harsh Yadav; Nidhi Sinha, CrystEngComm, 2014

Organic non linear optical single crystals of benzil have been grown by Czochralski (Cz) and slow-evaporation techniques. Crystal morphology was characterized by computing the growth rates of the planes which was found to be affected by solvent modification. Intermolecular interactions of the ...

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Effect of Anatase crystal orientation on the photoelectrochemical performance of anodic TiO2 nanotubes

21.10.2014 | Prospero Acevedo-Peña; Federico González; Gonzalo Gonzalez; Ignacio Gonzalez, Physical Chemistry Chemical Physics, 2014

The TiO2 nanotube films were prepared by anodizing Ti plates in ethylene glycol based electrolytes containing variable concentrations of ammonium fluoride and water. The morphology, optical and semiconducting properties, as well as the composition of TiO2 films showed to be dependent on the ...

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Controllable fabrication of multifunctional 1D Ag-based coordination polymer@PVP nanowires

21.10.2014 | Bo Lv; Xiaobo Shi; Xiaoyan Ma; Zhiyang Zhang; Kuaibing Wang, New Journal of Chemistry, 2014

Wires-like coordination polymer architectures coupling with polyvinylpyrrolidone (PVP) additive have been synthesized under mild condition. The morphology of the final coordination polymer was dependent on adjusting synthetic parameters, such as solvents and the amount of PVP. A possible assembly ...

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A new approach to preparing porous carbons with controllable pore structure and morphology

21.10.2014 | Yi Gu; Zhigang Xiong; Wael Al Abdulla; Guohua Chen; X. S. Zhao, Chemical Communication, 2014

A new approach to preparing porous carbons with desirable pore structure and morphology is demonstrated by using an appropriate pair of polycarboxylic acid/anhydride and diamine in the presence of a metal salt without a sacrificial template.

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Morphology and crystallinity-controlled synthesis of MnO2 hierarchical nanostructures and their application in lithium ion batteries

21.10.2014 | Dongfei Sun; Jiangtao Chen; Juan Yang; Xingbin Yan, CrystEngComm, 2014

We demonstrate a novel strategy for the well-controlled preparation of MnO2 hierarchical nanostructures, i.e. MnO2 submicron fibers composed of nanosheets or nanorods with different crystalline phases (δ- and α-MnO2), by integrating electrospinning, hydrothermal synthesis and subsequent ...

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Tensile fatigue behavior of polyamide 66 nanofiber yarns

18.10.2014 | Sara Asghari Mooneghi, Ali Akbar Gharehaghaji, Hossein Hosseini‐Toudeshky, Giti Torkaman, Polymer Engineering and Science, 2014

Nanofiber yarns with twisted and continuous structures have potential applications in fabrication of complicated structures such as surgical suture yarns, artificial blood vessels, and tissue scaffolds. The objective of this article is to characterize the tensile fatigue behavior of continuous ...

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Fabrication and characterization of novel hyperbranched polyimides with excellent organosolubility, thermal and mechanical properties

18.10.2014 | Wenqiu Chen, Quantao Li, Quanyuan Zhang, Zushun Xu, Xianbao Wang, Changfeng Yi, Journal of Applied Polymer Science, 2014

ABSTRACT A series of amine‐terminated and anhydride‐terminated hyperbranched polyimides (HBPIs) were successfully prepared with various commercial dianhydrides and a novel BB′2‐type aromatic triamine, 2,4,6‐tris[4‐(4‐aminophenoxy)phenyl]pyridine, with a symmetrical triaryl‐substituted ...

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