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International Conference on Materials Science and Manufacturing, ICMSM 2012

作者： Li, Qiong Zhang, Haining School of materials science and Engineering Wuhan Textile University Wuhan 430200 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

ISBN: (纸本)9783037855614

Fibrinogen adsorption onto surface-attached poly(methacrylic acid) monolayers and poly(methacrylic acid)/polyethyleneimine bilayers has been investigated. The adsorbed amount of fibrinogen was found to be dependant on the charge sign of the topmost layer because of electrostatic interactions. © (2013) Trans Tech Publications, Switzerland.

关键词： Polyelectrolytes

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Solvent‐Driven Chiral‐Interaction Reversion for Organogel Formation†

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Angewandte Chemie 2014年第8期126卷

作者： Guangyan Qing Xingxing Shan Wenrui Chen Ziyu Lv Peng Xiong Taolei Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 (P.R. China)

For chiral gels and related applications, one of the critical issues is how to modulate the stereoselective interaction between the gel and the chiral guest precisely, as well as how to translate this information into the macroscopic properties of materials. Herein, we report that this process can also be modulated by nonchiral solvents, which can induce a chiral‐interaction reversion for organogel formation. This process could be observed through the clear difference in gelation speed and the morphology of the resulting self‐assembly. This chiral effect was successfully applied in the selective separation of quinine enantiomers and imparts “smart” merits to the gel materials.

关键词： Chirale Erkennung Chirale Gele Lösungsmitteleffekte Selbstorganisation Wirt‐Gast‐Systeme

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synthesis and applications of hierarchically porous catalysts

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Chinese Journal of Catalysis 2013年第1期34卷 22-47页

作者： Li, Xiaoyun Sun, Minghui Rooke, Joanna Claire Chen, Lihua Su, Bao-Lian State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan 430070 Hubei China 61 rue de Bruxelles B-5000 Namur Belgium Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW United Kingdom

Hierarchically porous materials that can be used as catalysts or catalyst supports have garnered much attention due to their enhanced mass transport and multiple functionalities. Hierarchically porous catalysts integrate at least two levels of porosity and present the advantages associated with each level of porosity, from selectivity to mass transport. For example, hierarchically porous zeolites offer an effective solution to the mass transport problem associated with conventional zeolites in catalyzed reactions, because they combine the catalytic features of micropores and the improved accessibility and increased molecular transport related to the addition of several porosities within a single body. This review thoroughly summarizes recent developments that have been made in the field of hierarchically porous catalysts, with the main focus on the synthesis strategies that are available as well as their application in catalysis. It is the intent of this work to stimulate intuition into the optimal design of related hierarchically porous catalysts with desired characteristics. © 2013 Dalian Institute of Chemical Physics, the Chinese Academy of Sciences.

关键词： Porosity

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Effect of hydrolysis modifier on the properties of ATO films prepared by spin coating

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2012 Workshop on Inorganic Thin Films and Coatings

作者： Galaviz-Pérez, J.A. Chen, Fei Shen, Qiang Vargas García, J.R. Zhang, Lianmeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Dept of Materials and Metallurgical Eng. National Polytechnic Institute Mexico 07300 DF Mexico

ISBN: (纸本)9783037855669

ATO thin films have been successfully prepared by the spin coating method using an ethanol solution of SnCl4·5H2O and SbCl3 using acetylacetone as hydrolysis modifier. ATO films from 1 to 6 layers were prepared at 300 °C as densification temperature and within an annealing temperature ranging from 450 °C to 750 °C. Films exhibited the cassiterite crystalline phase and morphology consisted in nanoparticles of about 10 nm in diameter. Acetylacetone content as well the addition of water affected the particle size and morphology, decreasing particle size and the appearance of voids. Films prepared at an acetylacetone ratio of 4 with no addition of water exhibited an optical transparency above 90% from 380 to 800 nm while resistivity was 7.99 ×10-3 Ω·cm. The effect of the hydrolysis modifier on the electric properties, morphology, optical transparency and microstructure has been studied. © (2013) Trans Tech Publications, Switzerland.

关键词： Hydrolysis

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Performance comparison between series-connected and parallel-connected thermoelectric generator systems

Performance comparison between series-connected and parallel...

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2nd International Conference on Intelligent Materials, Applied Mechanics and Design Science, IMAMD 2013

作者： Wang, Yin Tao Liu, Wei Fan, Ai Wu Li, Peng School of Energy and Power Engineering Huazhong University of Science and Technology 1037 Luoyu Road Wuhan China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing 122 Luoshi Road Wuhan China

ISBN: (纸本)9783037857175

The connections between the thermoelectric modules are crucial importance for the performance of the thermoelectric power system. Many studies have been done to improve the output of thermoelectric system, but very little specific to the connections between the modules. A mathematical model of a module has been established, and based on this model, the performance of two systems composed of 6 pieces of thermoelectric modules, one in series connection and the other in parallel connection, is simulated with MATLAB software and then compared. The results can be used as reference for the design and prediction of thermoelectric system. © (2013) Trans Tech Publications, Switzerland.

关键词： MATLAB

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Effect of yttria content on phase stability and grain growth in Y2O3-ZrO2 coupling MgAl2O4 dispersed phase

Effect of yttria content on phase stability and grain growth...

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中国颗粒学会超微颗粒专委会2013年年会暨第八届海峡两岸超微颗粒学术研讨会

作者： Zhen Gao Gang-Qin Shao Jian Li Bin Li Juan-Juan Yu Wei Cai Jin-Long Sun Xiao-Hua Yu State Key Laboratory of Advanced Technology for Materials Synthesis & Processing Wuhan University of Technology

The tetragonal yttria-stabilized zirconia polycrystal coupling Mg Al2O4(3YTZP-30vol.%Mg Al2O4)exhibited the best high-strain-rate superplasticity in the binary systems,but few investigation had aimed

关键词： Composite materials Chemical synthesis Microstructure Phase equilibria

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synthesis and Self-Assembly of Core-shell Co@SiO2 Magnetic nanocomposites

Synthesis and Self-Assembly of Core-shell Co@SiO2 Magnetic n...

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International Conference on Nanoscience & technology,China 2013(ChinaNANO 2013)

作者： Si-Ming Wu Nan Jiang Wei Geng Ru-Jin Cheng Jie Hu Jie Ying Sheng-Chun He Yong Wang Xiao-Yu Yang State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology

In recent years, self-assembly nanoparticles into well-ordered structures possess quite important position in spectroscopy, magnetism, catalysis and biology. Among all of the nanoparticles, magnetic nanoparticles promises an unparalleled opportunity for self-assembly as they can be controlled to form directional arrangements according to the external magnetic fields. Herein we choose Cobalt nanoparticles whose diameter is within 10 nm. In this size they can show fabulous superparamagnetism, which means each nanoparticle is a small domain, when without an external field, the particles are disordered and show paramagnetic. However, when an external field is applied, to which the nanoparticles are controlled to arrange, and at this time they show ferromagnetic. What can’t be ignored is that it is difficult to achieve self-assembly process in smaller size of the nanoparticles due to easy aggregation. Taking this into consideration, core-shell nanostructures provide an effective vehicle to protect magnetic core and enhance their chemical stability. In this work, ordered self- assembly Co@SiO 2 nanocomposites are firstly reported by changing the external magnetic field. Cobalt nanoparticles as the magnetic cores were easily controlled to form varies arrangements, which means they can self- assembly into multi-scale regular patterned structures. Owing to strong external magnetic field, the ordered structured crystalline Co@SiO 2 composite with directional arrangements are successfully achieved by self-assembly. Moreover, by changing the magnetic field, the composite also forms 2D arrays and 3D structures. This nanocomposite can be applied as controlled targeted drug carriers which shows great potential in biological diagnosis and biomedical treatment. It is believed that this methodology of self-assembly can be extended to other similar core-shell nanocomposites with magnetic core and paves way to further applications in magnetism and biomedical researches.

关键词： self-assembly, nanoparticles, core-shell, magnetic.

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synthesis and application of hierarchically porous materials induced by functional proteins in ion screening

Synthesis and application of hierarchically porous materials...

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International Conference on Nanoscience & technology,China 2013(ChinaNANO 2013)

作者： Yong Wang Wei Geng Ru-Jin Cheng Nan Jiang Jie Hu Jie Ying Sheng-Chun He Si-Ming Wu Xiao-Yu Yang State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology

Biomineralization is a widespread phenomenon in nature leading to the formation of a variety of solid inorganic structures by living organisms. And many chemists have long strived to mimic this nature’s critical tricks. Many studies have been focused on this field. These biomineralized materials are inorganic-organic hybrid composites formed by self-assembled processes under mild conditions, showing interesting properties, controlled hierarchical structures, and special function. Among the biomineralization, proteins are attractive for synthesis of the hybrid materials, due to its much milder reaction conditions, highly specific or multiple functions and many successful examples existing in nature. Here we chose a functional protein, C96 RIDC-1 4 , which has the ability to selectively bind metal irons, such as Zn 2+ . Because of its high surface area, high stability and the property of capillary effect, the hierarchically structured porous materials are one of the ideal materials for biomineralization. In the typical synthesis process of the macro-meso porous materials, the functional protein was used as the second kind of the templates to induce the formation of the hierarchically structured porous materials, besides the surfactant is a template. For the living of the protein, we change the reaction condition to be much milder, such as at or near neutral pH, choosing the special surfactant which is not harmful to the protein, and so on. We prepared the macro-meso porous materials into the monolithic column. And this monolithic column is porous structure with macropores and two sizes of the mesopores. With the obtained monolithic devices, we tested its adsorption amount of Zn 2+ to get the limit value, the efficiency of the adsorption using the Zn 2+ solution with very low concentration and different filter time. Those results show the potential application in purifying the water to obtain the pure water with less impurity ions, purifying the organic compound and dr

关键词： biomineralization, protein, macro-meso porous materials, monolithic column

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Enhanced and suppressed effects of ionic liquid on the photocatalytic activity of TiO2

Enhanced and suppressed effects of ionic liquid on the photo...

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作者： Qi, Lifang Yu, Jiaguo Jaroniec, Mietek State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Luoshi Road 122# Wuhan 430070 China Department of Chemistry and Biochemistry Kent State University Kent OH 44242 United States

The effects of a room temperature ionic liquid, 1-butyl-3-methylimidazolium terafluoroborate ([Bmim]BF4), on the photocatalytic performance of Degussa P25 TiO2 were investigated. Also, the photocatalysis mechanism was systematically analyzed by conducting different reactive radical trapping experiments. The results showed that photogenerated electrons were the main reactive species involved in the photocatalytic degradation of methyl orange (MO), while •OH radicals and photogenerated holes played an important role in the photocatalytic decomposition of rhodamine B (RhB). The addition of ionic liquid (IL) could slightly enhance the photocatalytic degradation rate of MO because adsorption of [Bmim]+ ions on the TiO2 surface not only enhanced traping and transfer of photogenerated electrons, but also facilitated adsorption of negatively charged MO. On the contrary, IL suppressed the degradation rate of RhB because [Bmim]+ on the TiO2 surface not only hindered the access of positively charged RhB to TiO2, but also restricted the diffusion of positively charged holes to the TiO2/solution interface. © 2013 Springer Science+Business Media New York.

关键词： Titanium dioxide

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Nanocrystalline antimony-doped tin oxide films prepared by sol-gel

Nanocrystalline antimony-doped tin oxide films prepared by s...

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8th Pacific Rim International Congress on advanced Materials and processing 2013, PRICM 8

作者： Galaviz-Pérez, J.A. Chen, Fei Shen, Qiang Vargas-García, J.R. Zhang, Lianmeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Dept. of Materials and Metallurgical Eng. National Polytechnic Institute Mexico 07300 DF Mexico

ISBN: (纸本)9781632660008

Antimony-doped tin oxide films were prepared by sol-gel technique from an ethanolic solution of SnCl4.5H2O and SbCl3. The effect of the addition of acetylacetone as a hydrolysis modifier was investigated. Structural, optical and electrical properties of the films were studied by XRD, FESEM, TEM, FTIR, UV-vis, TG and Hall effect measurements. TEM results showed that antimony-doped tin oxide films consist of well-crystallized grains ranging from 5 to 10 nm. It was found that the addition of the acetylacetone influences positively the film properties. The appropriate addition of acetylacetone allowed for the preparation of films with an optical transmittance as high as 97% in the visible region and 47% at 200 nm. Highly transparent films prepared in this study exhibit an electrical resistivity of 10-3 Ω cm which make them attractive for photovoltaic cell applications.

关键词： Chlorine compounds

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