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Influcence of the TiO2 and Cu2S nanowire arrays served as the photo-anodes and photo-cathodes on the efficiency of quantum dots sensitized solar cells

Influcence of the TiO2 and Cu2S nanowire arrays served as th...

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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： Zhuoyin peng Yueli Liu Yinghan Zhao Keqiang Chen Yuqing Cheng Chen Wen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070P.R.China

Quantum dots sensitized solar cells (QDSSCs) have been attracted much attention as the next generation photovoltaic devices, due to the size-effect, high absorption coefficient and multiple excitation generation of quantum dots (QDs).Recently, Mn-CdS/CdSe and CuInS2/Mn-CdS sensitized solar cells has been ***, the performance of the solar cells is still limited by the transfer barrier of the photo-induced electrons from ***, the single crystalline nanorods, nanowires and nanotubes arrays structure have been widely prepared to improve the electron *** order to effectively enhance the efficiency, the nanowire structure is expected to be employed in both photo-anodes and counter electrodes for QDSSCs fabrication.

关键词： Anatase TiO2 nanowire arrays CuInS2/Mn-CdS quantum dots co-sensitized solar cells Cu2S nanowire arrays counter electrodes efficiency enhancement

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Gas Sensing Properties of Ultralong MoO3 Nanobelts for Ethanol Gas

Gas Sensing Properties of Ultralong MoO3 Nanobelts for Ethan...

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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： Shuang Yang Yueli Liu Wei Jin Wen Chen Tingqiang Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070P.R.China

As a layered-structure semiconductor material with wide band gap, MoO3 has been considered to be a promising candidate for application in gas ***, gas sensor based on MoO3 have been found to have a response towards various gases such as H2S, NO2, NH3, trimethylamine, formaldehyde and H2 in the temperature range of 300-600 ℃.Although MoO3 films and nanorods are not sensitive to ethanol gas, it is found that the ultralong MoO3 nanobelts have a good sensitivity and selectivity to ethanol gas in our works.

关键词： Ultralong MoO3 Nanobelts Hydrothermal method Gas Sensing Property Ethanol gas

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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)(中国国际纳米科学和技术大会)

作者： Chao Wang Xiu-Cheng Luo Cong Wang Jie-Qi Hu Ji-Wu Tang Yu Tian Yu Li Bao-Lian Su Laboratory of Inorganic Materials Chemistry (CMI) The University of Namur (FUNDP)61 rue de BruxellesB-5500 NamurBelgium Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology430070WuhanHubeiChina Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology430070WuhanHubeiChina

Cadmium sulphide (CdS) is a promising material to produce hydrogen because of its narrow band gap, abundance and simple preparation *** 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 ***, much attention has been focused on CdS morphologies controlling, nanostructures doping and surface modifacation.

关键词： Cadmium sulphide Porous microspheres Hydrothermal Photocatalytic

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Photocatalytic Properties of Hierarchical and Nanoporous Titania Hollow Microspheres

Photocatalytic Properties of Hierarchical and Nanoporous Tit...

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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： Chao Zhang Jie Yang Yueli Liu Wen Chen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070P.R.China

TiO2 hollow structure materials had become one of the hot spots because of their low density, high specific surface areas, and good photocatalytic *** now, there were lots of works focused on them, such as their extensive application in catalysis, pharmacy, sensing device, photon transmission and the basis material of ***, the drawbacks which are out control of nanoparticles phases on the surface, raw materials wasted and visible region absorption of its structure doesn't make it get better development in the field of photocatalysis research.

关键词： TiO2 hollow spheres Template method Photocatalytic property Benzene gas

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Slow Photon Enhanced Photocatalytic Activity of ZnO Inverse Opal Film Synthesized by Sol-gel Method

Slow Photon Enhanced Photocatalytic Activity of ZnO Inverse ...

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

作者： Jing Liu Jun Jin Shao-zhuan Huang Li Wang Chao Wang Yu Li Bao-lian Su Laboratory of Living Materials at 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) Department of Chemistry University of Cambridge

Recently, inverse opal structures, which have many potential applications in catalysts, separations, sensors, bioscience and photonics for their unique advantages such as highly ordered pore structure, large specific surface areas. The common synthesis strategy for inverse opal films is colloidal crystal templating method. This method included three steps: (1) synthesizing the hexagonal ordered-closed colloidal crystals;(2) immersing the liquid mental precursor into the voids of the templates;(3) removing the templates by calcination or etching. Several fabrication methods for ZnO inverse opal film synthesis have been reported including atomic layer deposition, chemical vapor deposition and electrodeposition. However the large-scale ZnO inverse opal film synthesized by sol-gel method has seldom been reported and the mechanism on the photocatalytic activity of ZnO inverse opal film is still needed to be explored. In this work, different sizes of P(St-MMA-SPMAP) colloidal spheres were used as templates and Zn(NO 3 ) 2 as precursor to obtain the ZnO inverse opal film. The products have been characterized by XRD, SEM, and UV/Vise spectrometer. The morphology of the products is highly organized, dense and large-scale and the crystalline of the products is hexagonal wurtzite structure. The different sizes of ZnO inverse opal films have been applied for the photodecomposition of the rhodamine B (RhB) in water. Through the results it can be concluded that the photocatalytic activity has been correlated with the pore sizes of the ZnO inverse opal film, which ascribe to the slow photon effect. When the stop-band edge matches the irradiation wavelength, it can increase the path length of light by enhancing the light absorption of the material resulting in enhanced photocatalytic activity.

关键词： ZnO inverse opal film sol-gel method slow-photon photocatalysis

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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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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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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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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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Structure and electrical properties of ternary BiFeO_(3)-BaTiO_(3)-PbTiO_(3) high-temperature piezoceramics

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Journal of advanced Ceramics 2012年第3期1卷 227-231页

作者： Zhonghua YAO Ying LIU Zhe SONG Zhijian WANG Hua HAO Minghe CAO Zhiyong YU Hanxing LIU State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials Ministry of EducationWuhan University of TechnologyWuhan 430070China

In the current work,the bulk ternary(0.85-x)BiFeO3-xBaTiO3-0.15PbTiO3(BF-BTx-PT,x=0.08-0.35)system has been studied as a potential high-temperature *** with various content of BT were prepared via solid-state route,and pure perovskite phase was confirmed by X-ray *** temperature dependence of dielectric constants confirmed the decrease of Curie temperature with increasing BT *** was found that the morphotropic phase boundary(MPB)composition of BF-BTx-PT ceramics was in the vicinity of x=0.15,which exhibits optimal properties with piezoelectric constant d33 of 60 pC/N,high Curie temperature of 550℃,and low sintering temperature of 920℃.Measurements also showed that the depoling temperature was 300℃,about 150℃higher than that of commercialized PZT ceramics,which indicated good temperature ***-BTx-PT ceramics are promising candidates for high temperature applications.

关键词： ceramics piezoelectric materials barium titanate perovskite ferroelectrics

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