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2.485 Aktuelle Fachpublikationen zum Thema temperature

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pH- and Temperature-Responsive Aqueous Foams Stabilized by Hairy Latex Particles

18.11.2014 | Syuji Fujii; Ko Akiyama; Saori Nakayama; Sho Hamasaki; Shinichi Yusa; Yoshinobu Nakamura, Soft Matter, 2014

Polystyrene (PS) particles carrying pH- and temperature-responsive poly[2-(dimethylamino)ethyl methacrylate] (PDMA) hairs (PDMA-PS particles) were synthesized by dispersion polymerization. The diameter, diameter distribution, morphology, chemical composition and surface chemistry of the particles ...

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Effect of dielectric packing materials on the decomposition of carbon dioxide using DBD microplasma reactor

14.11.2014 | Xiaofei Duan, Zongyuan Hu, Yanping Li, Baowei Wang, AIChE Journal, 2014

Abstract Carbon dioxide (CO2) decomposition was carried out at a normal atmosphere and room temperature in dielectric barrier discharge (DBD) microplasma reactors to reduce CO2 emissions and convert CO2 into valuable chemical materials. The outlet gases, including CO2, CO, and O2, were ...

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Generalized Approach to the Microstructure Direction in Metal Oxide Ceramics via Polymerization-Induced Phase Separation

14.11.2014 | Stephen G. Rudisill; Sammy Shaker; Denis Terzic; Réginald Le Maire; Bao-Lian Su; Andreas Stein, Inorganic Chemistry, 2014

When three-dimensionally ordered macroporous (3DOM) materials are synthesized in polymeric colloidal crystal templates using a Pechini-type approach, polymerization-induced phase separation (PIPS) can occur. Depending on the reaction conditions, the porous products have a variety of morphologies, ...

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Tuning the Morphology of GeS2 Hybrid Materials Using Ionic Liquids as Structuring Agents

13.11.2014 | Romain Mathiaud, Laurence Courthéoux, Gilles Silly, Hashim Albadri, Jocelyne Levillain, Annie‐Claude Gaumont, Michel ..., European Journal of Inorganic Chemistry, 2014

Abstract Control of the surface chemistry and morphology of chalcogenide materials, which are highly polarizable, is a very interesting challenge as it might lead to breakthroughs in various fields such as electrochemistry, catalysis, and gas‐phase separation. With this in mind, a new approach ...

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Hydrothermal Preparation and Magnetic Properties of NaFeSi2O6: Nanowires vs Bulk Samples

11.11.2014 | Shiliang Zhou; Wolfgang G. Zeier; Moureen C. Kemei; Moulay T. Sougrati; Matthew Mecklenburg; Brent C. Melot, Inorganic Chemistry, 2014

A single-step hydrothermal route to the preparation of the pyroxene mineral, NaFeSi2O6, is reported. The as-prepared samples are found to adopt a nanowire morphology and can be made with a yield of several hundred milligrams at a time with high purity. Synchrotron X-ray diffraction, electron ...

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Effect of Concentration and Temperature on the Surface morphology of Gd2O3 Nanocrystallites in Silica

07.11.2014 | Rachna Ahlawat, International Journal of Applied Ceramic Technology, 2014

Gd(NO3)3.6H2O and TEOS were used as precursors and obtained Gd2O3:SiO2 ceramic powder having different concentration of Gd2O3 as 2.2, 2.8, 3.4, and 4.0 wt % using solgel process. The powdered samples were annealed at 500°C and 900°C temperatures and characterized by XRD, FTIR, SEM, and TEM. In ...

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Influence of Water on Protein Transitions: Morphology and Secondary Structure

07.11.2014 | Wenwen Huang; Sreevidhya Krishnaji; Olena Rabotyagova Tokareva; David Kaplan; Peggy Cebe, Macromolecules, 2014

Fibrous protein secondary structural transitions are affected by bound water. A family of specially designed recombinant spider silk-like block copolymers with a gradient of block length, hydrophobilicity, and degree of crystallinity was biosynthesized and characterized to demonstrate the effect ...

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Preparation of Spherical AlN Granules Directly by Carbothermal Reduction–Nitridation Method

06.11.2014 | Qi Wang, Wei Cui, Yiyao Ge, Kexin Chen, Zhipeng Xie, Journal of the American Ceramic Society, 2014

In this work, an efficient carbothermal reduction–nitridation strategy was rationally designed and delicately tailored to directly synthesize spherical granules of aluminum nitride. Effects of processing parameters, such as N2 pressure, additives and temperature on the nitridation ratio, ...

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Conversion of Amyloid Fibrils of Cytochrome c to Mature Nanorods through a Honeycomb Morphology

05.11.2014 | Shubhasis Haldar; Pallabi Sil; Muruganandan Thangamuniyandi; Krishnananda Chattopadhyay, Langmuir, 2014

Amyloid species with various morphologies have been found for different proteins and disease systems. In this article, we aim to ask if these morphologies are unique to a particular protein or if they convert from one to another. Using a heme protein containing iron as the transition-metal ...

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Preparation of Plate‐Like Sodium Niobate Particles by Hydrothermal Method

03.11.2014 | Shan Bai, Yao Lu, Tomoaki Karaki, Journal of the American Ceramic Society, 2014

Sodium niobate NaNbO3 hydrate (NN‐hydrate) particles with a plate‐like morphology were prepared at 140°C for 2h in 12mol/L of NaOH by the hydrothermal method. Bar‐like Na8Nb6O19·13H2O particles were synthesized at as low as 100°C for 2h. This work demonstrates that by carefully optimizing the ...

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