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One-step synthesis of Highly Monodisperced and Thermally Stable PtPd Bimetallic Nanoparticles in Mesocellular Silica Foam

One-step Synthesis of Highly Monodisperced and Thermally Sta...

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International Conference on Nanoscience & technology,China 2013(ChinaNANO 2013)(中国国际纳米科学和技术大会)

作者： Jie Ying Nan Jiang Wei Gen Li Lu Shengchun He Jie He Xiaoyu Yang Baolian Su Laboratory of Inorganic Materials Chemistry University of Namur (FUNDP)61 rue de BruxellesB5000NamurBelgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi Road430070China State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology122 Luoshi Road430070China

The preparation and stabilization of metallic nanoparticles are of great importance in the field of *** developments in supermolecular self-assembled porous materials enabled catalytic metal nanoparticlcs to be hosted inside the pores of such porous materials for enhancing the stability of these metallic nanoparticles, which is the drawback for bare metallic nanoparticles because of their deformation or aggregation.

关键词： PtPd bimetal Mesocellular silica foam thermal stability catalysis

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Electromagnetic parameters and microwave-absorption properties for the mixtures of mechanically milled spherical and flaky carbonyl iron powders

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Acta Metallurgica Sinica(English Letters) 2012年第3期25卷 201-206页

作者： Jinghua HE Wei WANG Aimin WANG Jianguo GUAN State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan Universityof TechnologyWuhan 430070China

The electromagnetic parameters were measured for the mixtures of mechanical milled carbonyl iron powders （CIPs） with different mass ratios of spheroid-like particles to flake-shape particles. The results indicate that mixing the sphere-like CIP particles with flake-shaped CIPs can be used to adjust effectively the electromagnetic parame- ters and enhance the absorption property in high frequency. In addition, a theoretic simulation based on the principle of superposition was carried out and compared with the microwave measurement results, indicating that the simple principle of superpo- sition can not reflect truly the internal interaction mechanism in the composites with different particle shapes.

关键词： Carbonyl iron Mechanical milling Electromagnetic property Microwave-absorption property

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The immobilization of cells labeled by quantum dots based on electrospinning technology and its application in microbial fuel cells

The immobilization of cells labeled by quantum dots based on...

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International Conference on Nanoscience & technology,China 2013(ChinaNANO 2013)(中国国际纳米科学和技术大会)

作者： Shengchun He Nan Jiang Wei Geng Jie Hu Yi Lu Jie Ying Xiaoyu Yang Baolian Su Laboratory of Inorganic Materials Chemistry University of Namur (FUNDP)61 rue de BruxellesB5000NamurBelgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi Road430070China State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology122 Luoshi Road430070China

Encapsulation of whole microbial cells in nanofibers for use in microbial fuel cells was the main focus of this *** using an electrostatic spinning device with two coaxial capillaries, the continuous nanofibers of a c... 详细信息

关键词： Electrostatic spinning Encapsulation of cells Quantum dots labeled cells Microbial fuel cells

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Porous Cadmium Sulfide Microspheres Prepared by Hydrothermal synthesis for Photocatalytic Water-Splitting

Porous Cadmium Sulfide Microspheres Prepared by Hydrothermal...

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

作者： Chao Wang Xiu-Cheng Luo Cong Wang Jie-Qi Hu Ji-Wu Tang Yu Tian Yu Li Bao-Lian Su Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Laboratory of Inorganic Materials Chemistry (CMI) The University of Namur (FUNDP) 61 rue de Bruxelles B-5500 Namur Belgium

Cadmium sulphide (CdS) is a promising material to produce hydrogen because of its narrow band gap, abundance and simple preparation method. As we know, element-doped CdS and special nanostructure of CdS has high efficient performance for hydrogen production, while CdS alone demonstrated extremely low photocatalytic activity for the production of hydrogen under visible light irradiation. Therefore, much attention has been focused on CdS morphologies controlling, nanostructures doping and surface modifacation. In this work, The porous cadmium sulphide microspheres which were prepared through hydrothermal route by using anionic surfactant. Firstly, the precursor solution of cadmium sulphide were prepared. Then, the mixture was transferred into a Teflon-lined stainless steel autoclave, which was maintained at 160℃ for 30 min. Finally, the samples were obtained through washing with distilled water and being dried in air. The prepared samples are characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy. The results indicate that the morphology of cadmium sulphide microspheres can be tuned from nanoparticles-assembled spheres to sheet-assembled spheres with different amount of SDBS. The photocatalytic performances of the CdS microspheres are carrying out by photocatalytic water-splitting for hydrogen production under visible-light irradiation. And these special structures of cadmium sulphide microspheres show good photocatalytic activity during test.

关键词： Cadmium sulphide, Porous microspheres, Hydrothermal, Photocatalytic

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Estimation of La1-xSrxMnO3 (x=0.15~0.5) emittance by thermal irradiation theory

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2012 International Conference on Mechanical materials and Manufacturing Engineering, ICMMME 2012

作者： Monfared, Sara Hatefi Tang, Guangze Ma, Xinxin Mianji, Fereidoun A. School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China National Key Laboratory of Science and Technology on Precision Hot Processing of Metals Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin 150001 China Iran Nuclear Regulatory Authority Tehran Iran

ISBN: (纸本)9783037855560

La1-xSrxMnO3 (LSMO) has recently shown promising features as a metal-insulator material over a limited range of Sr doping (x=0.175 to 0.25). Its thermal property has been commonly measured through the very expensive calorimetric method. In this paper, a considerably more convenient thermal investigation approach to this issue through the thermal irradiation theory is proposed. LSMO compounds were synthesized with a wide range of x (0.15 to 0.5) using the precisely controlled Pechini sol-gel method. XRD phase structure analysis and XPS composition and chemical state study were adopted for quality assurance of the compounds. Resistance and infrared reflectance of the samples were measured respectively with the help of the four probe technique in temperature range of 150K to 380K and an infrared spectrometer over a temperature range of 153 K to 544 K. Investigations showed a good correlation between these two measures approving the metal-insulator characteristic of all the samples. Calculation of the total normal emittance (ΕN(T)) of the compounds was innovatively simplified using the measured reflectivity data through the thermal irradiation theory for graybody. Moreover, the results showed that every x ratio fabricated through the precisely controlled Pechini method presented a unique ΕN(T) characteristic with a different metal-insulator transition temperature. © (2013) Trans Tech Publications, Switzerland.

关键词： Optical properties

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Tailoring the Porous Hierarchy and Dimension of Styrene-based Polymers by Spontaneous Inorganic Nano-Templating

Tailoring the Porous Hierarchy and Dimension of Styrene-base...

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

作者： Ge Tian Jie Hu Shengchun He Jie Ying Siming Wu Yong Wang Xiaoyu Yang Baolian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Laboratory of Inorganic Materials Chemistry (CMI) The University of Namur (FUNDP) 61 rue de Bruxelles B-5000 Namur (Belgium)

Nanoporous polymers, especially these presenting multimodal or multiscale porosity are of considerable interest because of their present advantages: hydrophobic surface, flexibility, biocompatiblity, easy functional modification, well regularity and so on. Some traditional templating techniques have been extented to fabricate the hierarchical structured polymer, such as breath figure, colloidal crystal, supercritical fluids, and emulsion templating. However, the fabrication of nanoporous polymers with tailored porous structure still remains a big challenge. Most recently, metal alkoxide/alkly can be used to spontaneously create hierarchically structured nanomaterials by very fast hydrolysis and condensation. Therefore, the metal alkoxide would seem to be a good candidate for a spontaneous inorganic template to synthesize porous polymers with tailored hierarchical porosity. The polystyrene-based polymers, as one of most important industrial polymers, have been widely applied in packaging industry, consumer goods, building materials, catalysis and etc. Herein, we demonstrate a novel spontenaous inorganic templating strategy to synthesize porous polystyrene-based polymers. Very interestingly, both the hierarchy and dimension of pores could be tunable by the content of the inorganic ester added. Controlled 2D and 3D porous structure, meso-macro porous structure and small macro-large macro porous structure polystyrene all have been prepared through this method. 2D and 3D porous structure also have been fabricated when PC or PEO joined the reaction system, respectively. This inorganic template would be a versatile method to fabricate porous polymer films and monoliths. Such hierarchical porous PS is a very promising candidate to be applicated for solid-phase organic synthesis, combinatorial chemistry, polymer-supported catalysis, and ion-exchange. And further incorporation of functional groups can improve the performances of these materials and broaden their industry appl

关键词： Styrene-based polymers, metal alkoxide/alkyl, spontaneous inorganic nano-template, tailored porous structure

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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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IUPAC 9th International Conference on Novel materials and their synthesis(NMS-IX) & 23rd International Symposium on Fine Chemistry and Functional Polymers(FCFP-XXIII)(IUPAC第九届新型材料和合成国际会议暨第23届国际精细化工和功能聚合物研讨会)

作者： Yona Wana Wei Geng Ru-Jin Cheng Nan Jiang Jie Hu Jie Ying Sheng-Chun He Si-Ming Wu Xiao-Yu Yan State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Luoshi Road 122 Wuhan 430070 China

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Chirality‐Assisted Ring‐Like Aggregation of Aβ(1–40) at Liquid–Solid Interfaces: A Stereoselective Two‐Step Assembly Process†

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Angewandte Chemie 2014年第7期127卷

作者： Guanbin Gao Mingxi Zhang Pei Lu Guanlun Guo Dong Wang Taolei Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 (PR China) Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (PR China) Hubei Key Laboratory of Advanced Technology of Automotive Components Wuhan University of Technology Wuhan 430070 (PR China) School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan 430070 (PR China)

Molecular chirality is introduced at liquid–solid interfaces. A ring‐like aggregation of amyloid Aβ(1–40) on N ‐isobutyryl‐ L ‐cysteine ( L ‐NIBC)‐modified gold substrate occurs at low Aβ(1–40) concentration, while D ‐NIBC modification only results in rod‐like aggregation. Utilizing atomic force microscope controlled tip‐enhanced Raman scattering, we directly observe the secondary structure information for Aβ(1–40) assembly in situ at the nanoscale. D ‐ or L ‐NIBC on the surface can guide parallel or nonparallel alignment of β‐hairpins through a two‐step process based on electrostatic‐interaction‐enhanced adsorption and subsequent stereoselective recognition. Possible electrostatic interaction sites (R5 and K16) and a chiral recognition site (H14) of Aβ(1–40) are proposed, which may provide insight into the understanding of this effect.

关键词： Adsorption Amyloide Chiralität Oberflächenchemie Stereoselektivität

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Hierarchically Structured Zeolites with Interconnected Three Level Micro-Meso-Macro Pore Structure:from synthesis to Catalysis

Hierarchically Structured Zeolites with Interconnected Three...

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1st Euro-Asia Zeolite Conference

作者： Bao-Lian Su Li-Hua Chen Laboratory of Inorganic Materials Chemistry University of Namur61 rue de BruxellesB-5000NamurBelgium State key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi Road

The new type of the hierarchically structured porous solid-acid catalysts described in this presentation possess a remarkable pore system,encompassing well-defined macrochannels, interconnected mesopores,intracrystalline mesopores,and tunable zeolite(ZMS-5,Beta,...) micropores[1-5].These hierarchical micro-meso-macroporous zeolitic catalysts with improved stability have been synthesized via a quasi solid state chemical crystallization ***,the catalyst exhibits very strong acidity

关键词： Hierarchically Structured Zeolites with Interconnected Three Level Micro-Meso-Macro Pore Structure:from synthesis to Catalysis

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Hierarchically Porous Carbon Supported Oxide Nanoparticles: synthesis, Characterization and Applications

Hierarchically Porous Carbon Supported Oxide Nanoparticles: ...

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the 4th International Conference on Structured Catalysts and Reactors (ICOSCAR-4)第4届催化剂和反应器的结构国际会议

作者： Chunxia Zhao Yunxia Yang Ken Chiang Nick Burke CSIRO Earth Science and Resource Engineering VIC 3168 Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China

Hybrid porous nanocomposites have received much attention during recent years because of their unique properties including well-controlled pore structures, high surface areas, and large and tunable pore sizes which facilitate the diffusion of molecular entities inside the pores [1].Porous carbon-based nanocomposites are interesting owing to the potential applications as catalysts, electrodes and *** has been shown in the literature that the yields of hydrocarbons produced from FischerTropsch process can be improved by using catalytic materials with controlled nanostructure and particle size [2].

关键词： Hierarchically porous structure Carbon Oxieds Composites Catalysis Application

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