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1st Euro-Asia Zeolite Conference

作者： Li-Hua Chen Xiao-Yun Li Xiao-Yu Yang Bao-Lian Su State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyLuoshi Road 122 Laboratory of Inorganic Materials Chemistry(CMI) University of Namur(FUNDP)61rue de BruxellesB-5000 NamurBelgium.

Crystalline microporous zeolites with pore sizes typically at 0.4-1.5 nra are one of the most useful catalysts in industrial processes such as oil refining and organic synthesis owing to their strong catalytic performance,high thermal and hydrothermal stabilities,and well-defined micropores with excellent shape-selectivity in ***,one disadvantage of these zeolitic catalysts is that their pores are too small to be accessed by bulky reactants hindering their use in the fine chemical and petroleum processing industries. To overcome

关键词： Multimodal zeolite catalysts with hierarchically micro-meso-macroporous structure

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Resistive switching in Pt/CuxO/Si/Pt device

Resistive switching in Pt/CuxO/Si/Pt device

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中国物理学会2013年秋季学术会议

作者： Linlin Wei Dashan Shang Jirong Sun Zhigang Sun State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyWuhan 430070People''s Republic of China Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academic of SciencesBeijing 100190People''s Republic of China State Key Laboratory of Advanced Technology for Material Synthesis and ProcessingWuhan University of TechnologyWuhan 430070People''s Republic of China Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academic of SciencesBeijing 100190People''s Republic of China

Nanoionics-based memristive devices(NIMD)have attracted intensive attention in recent years due to their potential application in resistive random access memory(RRAM)as well as reconfigurable logic devices [1,2].

关键词： memristive switching uniform-like switching ion migration nonvolatile memory

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Effect of Pt reduction method on Pt dispersion and visible-light photocatalytic H2-production performance of single crystal CdS nanowires

Effect of Pt reduction method on Pt dispersion and visible-l...

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第五届世界氢能技术大会(WHTC2013)

作者： Jiaguo Yu Jian Jin Gang Liu State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyLuoshi Road 122＃Wuhan 430070P.R. China National Center for Nanoscience and TechnologyBeijing 100190P. R. China

Single crystalline hexagonal CdS nanowires were prepared by a solvothermal method using ethylenediamine as ***/CdS nanocomposites were produced by different reduction methods and characterized by X-ray diffraction,transmission electron microscopy,high-resolution transmission electron microscopy,UV-visible spectroscopy,nitrogen absorption,pulse H2 chemisorption and X-ray photoelectron spectroscopy.

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Single crystal CdS nanowires with high visible-light photocatalytic H 2-production performance

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Journal of materials Chemistry C 2013年第36期1卷 10927-10934页

作者： Jin, Jian Yu, Jiaguo Liu, Gang Wong, Po Keung State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Luoshi Road 122# Wuhan 430070 China National Center for Nanoscience and Technology Beijing 100190 China School of Life Sciences Chinese University of Hong Kong Shatin NT Hong Kong

Single crystalline hexagonal CdS nanowires were prepared by a solvothermal method using ethylenediamine as a solvent. Pt/CdS nanocomposites were produced by different reduction methods and characterized by X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, UV-visible spectroscopy, nitrogen absorption, pulse H2 chemisorption and X-ray photoelectron spectroscopy. The photocatalytic performance of the as-synthesized Pt/CdS nanocomposites was evaluated towards H2 generation from a lactic acid aqueous solution under visible light (λ ≥ 420 nm). The sample prepared by the NaBH4 reduction method showed a higher photocatalytic H2-production activity than the sample prepared by the photo-reduction deposition method. A remarkable H 2-production rate of 1.49 mmol h-1 with a quantum efficiency (QE) of 61.7% was first achieved on the former with a small amount of Pt (0.3 wt%) as a co-catalyst. The photocatalytic activity difference of the samples is because reduction methods influence the size and dispersion of Pt nanoparticles (NPs), which further influence the photocatalytic H 2-production activity. The sample from the NaBH4 reduction method contains smaller Pt NPs (ca. 1-2 nm) and has higher Pt dispersion (72%), thus resulting in the higher H2-production activity. Further experiments showed that the one-dimensional nanostructure markedly enhanced the photocatalytic H2-production activity of CdS. After ball milling of the nanowires, which leads to destruction of their structure, the photocatalytic H2-production activity of CdS decreases by more than 30%. The underlying mechanism for the observed photocatalytic H2-production performance of Pt/CdS nanocomposites was discussed. © 2013 The Royal Society of Chemistry.

关键词： Nanocomposites

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Methyl Halide to Olefins and Gasoline over Zeolites and SAPO Catalysts：A New Route of MTO and MTG

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催化学报 2012年第1期33卷 11-21页

作者： WEI Yingxu ZHANG Dazhi LIU Zhongmin SU Bao-Lian Dalian National Laboratory for Clean Energy National Engineering Laboratory for Methanol-to-OlefinsDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 0LiaoningChina Laboratory of Inorganic Materials Chemistry(CMI) University of Namur(FUNDP)61rue de BruxellesB-5000NamurBelgium State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

到更有用的更高的烃的甲烷的合理、有效的变换是天然气利用的最重要的话题之一。尽管到珍贵混合物的甲烷激活和它的变换吸引增加的注意，甲烷变换经常为 syngas 通过消费精力的步以间接方法被做从甲烷改过的蒸气的生产。一些有希望的结... 详细信息

到更有用的更高的烃的甲烷的合理、有效的变换是天然气利用的最重要的话题之一。尽管到珍贵混合物的甲烷激活和它的变换吸引增加的注意，甲烷变换经常为 syngas 通过消费精力的步以间接方法被做从甲烷改过的蒸气的生产。一些有希望的结果看起来为从甲烷的高增值产品的生产具有为一种选择和潜在的线路的发展的意义。到更高的烃的甲烷的有效变换能作为中介经由甲基卤化物被认识到。在 halomethane 的生产以后，他们能在修改沸石和 SAPO 上被转变到汽油和轻石蜡分子的筛。高变换效率和选择显示了工业申请的可行性。研究在基本研究和工业申请从观点获得了最近成长的兴趣。反应机制上的学习从甲基卤化物使 CC 契约建设的可能的线路清楚些，它是到更高的烃的 C1 反应物变换的重要问题。氢卤化物产生没在反应机制和催化剂的结构稳定性上在甲基卤化物变换期间施加明显的影响。这评论处理这个领域和注释的进化要探索的优点和缺点经由甲基卤化物发送为新、持续的 methane-to-olefins (MTO ) 和 methane-to-gasoline (MTG ) 的开发被阻止。

关键词： methyl halides hydrocarbons zeolite SAPO-34 reaction mechanism

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Photocatalytic Degradation of *** Membrane Cell in the Presence of ZnO Nanowires

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Journal of Wuhan University of technology(materials Science) 2011年第2期26卷 223-226页

作者：王雪飞刘鹏 Department of Chemistry School of ScienceWuhan University of Technology State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology

The photocatalytic degradation of *** membrane cell by ZnO nanowires was studied using field-emission scanning electron microscope（FE-SEM）,fluorescence microscopy,and Attenuated total reflection fourier transform infrared（ATR-FTIR）.The outer membrane of *** was removed completely in the presence of ZnO nanowires under UV irradiation,and the cells became twisted shapes without a mechanically strong *** ZnO nanowires photocatalysis,the permeability of the treated cells increased to some degree that could be confirmed by quantum dots labeling *** changes in the cell wall membrane were revealed by the decay of the characteristic groups bands in ATR-FTIR spectra.

关键词： photocatalysis E.coli ZnO nanowire permeability

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Photocatalytic Activity of Hierarchical Flower-Like TiO_(2) Superstructures with Dominant {001} Facets

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催化学报 2011年第4期32卷 525-531页

作者： XIANG Quanjun YU Jiaguo State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeLChina

The fabrication of well defined hierarchical structures of anatase TiO_(2) with a high percentage of reactive facets is of great importance and *** flower-like TiO_(2) superstructures(HFTS)self-assembled from anatase TiO_(2) nanosheets with exposed{001}facets(up to 87%)were synthesized by a simple alcohothermal strategy in a HF-H_(2)O-C_(2)H_(5)OH mixed solution using titanate nanotubes as *** samples were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and N2 adsorption-desorption *** photocatalytic activity was evaluated by the photocatalytic oxidation decomposition of acetone in air and methyl orange in aqueous solution under UV *** photocatalytic activity of HFTS was much higher than that of commercial Degussa P25 and tabular-shaped anatase TiO_(2) obtained using pure water as the synthesis *** enhancement in photocatalytic activity was related to several factors,including the hierarchically porous structure,exposed{001}facets,and increased light harvesting *** HFTS was also of interest for use in solar cells,photocatalytic H_(2) production,optoelectronic devices,sensors,and catalysis.

关键词： titanium dioxide {001}facet hierarchical flower-like titanium dioxide superstructure photocatalytic activity acetone methyl orange

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RETRACTED ARTICLE: Effects of high-pressure high-temperature sintering on the thermoelectric properties of Pb0.55Te0.45

RETRACTED ARTICLE: Effects of high-pressure high-temperature...

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作者： Chen, Bo Sun, Zhen-Ya Li, Ming-Fa Wang, Shan-Yu Fan, Duan Institute of High Temperature and High Pressure Physics Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

ISBN: (纸本)9781457705366

The n-type nonstoichiometric Pb0.55Te0.45materials were prepared by melting and quenching combined with a subsequent high pressure high temperature (HPHT) treatment. After adequately annealed at 623 K in the argon atmosphere, the thermoelectric transport properties of the prepared samples have been systematically investigated. The results show that the pressure effectively adjusts the carrier concentration and its transport properties, and hence commendably tunes thermoelectric performances of the samples. Therefore, the maximum ZT of the sample treated by 2 GPa reaches 0.84 at 580 K, which is ∼ 400% improvement in comparison with the melting ingot. © 2011 IEEE.

关键词： High pressure effects

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Microstructure and electrical properties of Y2O 3-doped WO3-based ceramicsm varistor

Microstructure and electrical properties of Y2O 3-doped WO3-...

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2011 International Conference on Chemical Engineering and Advanced materials, CEAM 2011

作者： Wang, Tianguo Qin, Qun Zhang, Wenjun Department of Material Science and Engineering Hubei University of Automotive Technology Shiyan 442002 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 China

ISBN: (纸本)9783037851197

WO3-based varistors doped with Y2O3 were prepared and the microstructure, nonlinear electrical properties, and dielectric properties were investigated. Breakdown voltages Eb of WO 3 doped with Y2O3 are lower than that of undoped WO3, indicating that the dopant can reduce the breakdown voltage. The dielectric constant of doped samples is higher than that of undoped samples, and the high dielectric constant makes them suitable as capacitor-varistor materials. It was found that the sample of WO3-0.5 mol% Y2O3 sintered at 1150 °C has an optimal nonlinear coefficient of 3.4 and a breakdown voltage of 17.1 V/mm. WO3 ceramic doped with Y2O3 is a new kind of low voltage capacitor-varistor material. © (2011) Trans Tech Publications, Switzerland.

关键词： Microstructure

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The preparation of oriented TiO2 nanotube films by electrophoretic deposition method without hard template and enhanced photocatalytic activity

The preparation of oriented TiO2 nanotube films by electroph...

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9th Chinese International Nanoscience and technology Symposium and the Nano-Products Exposition

作者： Zhao, Li Shen, Yi Wang, Shimin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Luoshi Road 122# Wuhan 430070 China Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei University Wuhan 430062 China Faculty of Material Science and Chemical Engineering China University of Geosciences Wuhan 430074 China

Highly oriented titanate nanotube (TNT) film was successfully synthesized by a simple electrophoretic deposition (EPD) method without any hard templates and surfactants. This oriented films adequately utilized the excellent properties of ID nanomaterials such as single crystal semiconductor architectures, large surface area, and superior charge transport, which lead to higher photocatalytic activity. We believe that this versatile method can be extent to fabricate other ordered ID nanomaterials films. Copyright © Taylor & Francis Group, LLC.

关键词： Yarn

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