检索结果-内蒙古大学图书馆

Cover Feature: Ring-Opening Polymerization ofl-Lactide to Cyclic Poly(Lactide) by Zeolitic Imidazole Framework ZIF-8 Catalyst (ChemSusChem 21/2017)

引用

ChemSusChem 2017年第21期10卷 4120-4120页

作者： Zhixiong Luo Dr. Somboon Chaemchuen Kui Zhou Prof. Dr. Francis Verpoort Laboratory of Organometallics Catalysis and Ordered Materials State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center for Chemical and Material Engineering Wuhan University of Technology Wuhan P. R. China School of Chemistry Chemical Engineering and Life Sciences Wuhan University of Technology Wuhan 430070 P .R. China Department of Inorganic and Physical Chemistry Ghent University Krijgslaan 281-S3 9000 Ghent Belgium School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 P. R. China National Research Tomsk Polytechnic University Lenin Avenue 30 Tomsk 634050 Russian Federation

来源：评论

学校读者我要写书评

暂无评论

From Millimeter to Subnanometer: Vapor–Solid Deposition of Carbon Nitride Hierarchical Nanostructures Directed by Supramolecular Assembly

引用

Angewandte Chemie 2017年第29期129卷

作者： Jingsan Xu Hong Wang Chao Zhang Xiaofei Yang Shaowen Cao Jiaguo Yu Menny Shalom School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Brisbane Queensland 4000 Australia Department of Colloid Chemistry Max Planck Institute of Colloids and Interfaces Golm 14424 Potsdam Germany Department of Chemistry University of Toronto Toronto Ontario M5S 3H6 Canada State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Shape and nanostructure control has great potential to enable graphitic carbon nitride (C 3 N 4 ) structures with new properties and functionalities. In this work, a new type of hierarchically structured nanoporous C 3 N 4 is introduced. The C 3 N 4 exhibits unique, edelweiss‐like morphology, with components ranging from millimeter‐sized bunches to subnanometer‐thick layers. A one‐step vapor–solid deposition approach using supramolecular aggregates as the precursor is carried out to accomplish the growth. Supramolecular pre‐association plays a crucial role in achieving this nanostructure by directing the vaporization and deposition processes. Furthermore, very small C 3 N 4 quantum dots can be readily acquired by bath sonication of the thin layers in water. The supramolecular preorganization growth strategy developed herein may provide a general methodology in the design of advanced photoelectric materials with broad applications in energy conversion and storage.

关键词： Dampf-Feststoff-Wachstum Graphitische Kohlenstoffnitride Hierarchische Nanostrukturen Supramolekulare Assemblierung

来源：评论

学校读者我要写书评

暂无评论

Cu2ZnSn（S,Se）4 thin film solar cells fabricated with benign solvents

引用

Frontiers of Optoelectronics 2015年第3期8卷 252-268页

作者： Cheng ZHANG Jie ZHONG Jiang TANG State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Wuhan National Laboratory for Optoelectronics Huazhong Univesity of Science and Technology Wuhan 430074 China

Cu2ZnSn（S,Se）4 （CZTSSe） is considered as the promising absorbing layer materials for solar cells due to its earth-abundant constituents and excellent semiconductor properties. Through solution-processing, such as various printing methods, the fabrication of high perfor- mance CZTSSe solar cell could be applied to mass production with extremely low manufacturing cost and high yield speed. To better fulfill this goal, environmentalfriendly inks/solutions are optimum for further reducing the capital investment on instrument, personnel and environmental safety. In this review, we summarized the recent development of CZTSSe thin films solar cells fabricated with benign solvents, such as water and ethanol. The disperse system can be classified to the true solution （consisting of molecules） and the colloidal suspension （consisting ofnanoparticles）.Three strategies for stabilization （i.e., physical method, chemical capping and self- stabilization） are proposed to prepare homogeneous and stable colloidal nanoinks. The one-pot self-stabilization method stands as an optimum route for preparing benign inks for its low impurity involvement and simple procedure. As-prepared CZTSSe inks would be deposited onto substrates to form thin films through spin-coating, spraying, electrodeposition or successive ionic layer adsorption and reaction （SILAR） method, followed by annealing in a chalcogen （S- or Se-containing） atmosphere to fabricate absorber. The efficiency of CZTSSe solar cell fabricated with benign solvents can also be enhanced by constituent adjustments, doping, surface treatments and blocking layers modifications, etc., and the deeper research will promise it a comparable performance to the non- benign CZTSSe systems.

关键词： Cu2ZnSn（S Se）4 （CZTSSe） solar cell benignsolvents metal chalcogenide complexes （MCCs） solutionprocessing

来源：评论

学校读者我要写书评

暂无评论

Fabrication, characterization and biological evaluation of PRGD/PDLLA/β-TCP scaffold for nerve regeneration

引用

Journal of Fiber Bioengineering and Informatics 2015年第1期8卷 133-142页

作者： Zhang, Zhu Wu, Xiaopei Yin, Yixia Zhao, Zheng Li, Shipu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Affiliated Hospital of Wuhan University of Technology Wuhan China

A novel nerve repairing material PRGD/PDLLA/β-TCP was synthesized and characterized with Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR) spectroscopy, and mass loss ratio. The effects of PDLLA or PRGD/PDLLA/β-TCP on viability and growth of Schwann Cells (SCs) were investigated by MTT assay and SEM. After implantation of different materials, histological assessment was performed. The results showed that, compared with PDLLA, PRGD/PDLLA/β-TCP materials displayed better biocompatibility, degradation property and less inflammatory reaction. Moreover, PRGD/PDLLA/β-TCP materials promoted the adhesion and proliferation of Schwann cells and exhibited better degradation performance than pure PDLLA. These results indicated that PRGD/PDLLA/β-TCP has a potential application in the fields of nerve regeneration. © 2015 Binary Information Press & Textile Bioengineering and Informatics Society.

关键词： Biocompatibility

来源：评论

学校读者我要写书评

暂无评论

A novel visible-light-driven photocatalyst of Cu-ZnS nanosheets by a simple macrowave hydrothermal method

引用

materials Research Innovations 2015年 19卷 273-276页

作者： Li, L. Chen, J. Zhang, Y. Xu, L. Guan, J. Ao, Y. Hwang, J.-Y. Liu, J. Zhou, G. Mao, X. Advanced Materials RandD Center of WISCO Beijing102211 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

Sheet-like Cu-ZnS heterostructured composites were prepared by the combination of microwave hydrothermal and cation exchange methods, according to the interfacial charge transfer theory. The fabrication of the heterojunctions broadened the range of light response of ZnS. The heterostructure can be tested by HRTEM image. Through transmission electron microscopy, we can find that the size of composites is about 800 nm. The photoexcited electrons of ZnS migrated to the redox potential of CuS-Cu2S under visible-light irradiation, which can facilitate the effective separation of photogenerated electrons and holes in space. The visible photocatalytic activity towards hydrogen production for sheet-like Cu-ZnS heterostructured composites without co-catalyst achieved 028 mmol h-1, and the quantum efficiency was up to 19.8% under the wavelength with 420 nm visible-light irradiation. © W. S. Maney & Son Ltd 2015.

关键词： Zinc sulfide

来源：评论

学校读者我要写书评

暂无评论

Multiferroic and magnetoelectric properties of La_(0.1)Ba_(0.9)Fe_(12)O_(19) ceramics

引用

Chinese Science Bulletin 2014年第36期59卷 5212-5217页

作者： Guolong Tan Wenrong Wang Wei Li Limin Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

La0.1Ba0.9Fe12O19 powders with similar hexagonal crystal structure to Ba Fe12O19 have been successfully synthesized using polymer precursor method. The powders were suppressed into pellets, which were sintered into ceramics at 1,300 °C for 1 h. The structure and morphology of the ceramics have been determined by X-ray diffraction(XRD) and field emission scanning electron microscopy(FESEM). Clear electric hysteresis loops upon different amplitude of external fields indicates that La0.1Ba0.9Fe12O19 is a kind of possible ferroelectric compound. The maximum remnant polarization of La0.1Ba0.9Fe12O19 ceramic is estimated to be *9.6 l C/cm2. The Fe O6 octahedron in its perovskite-like hexagonal unit cell as well as the shift of Fe3?off the center of octahedron are proposed to be the origin of electric polarization in La0.1Ba0.9Fe12O19. Simultaneous occurrence of large ferroelectricity and strong ferromagnetism has been observed in La0.1Ba0.9Fe12O19 ceramics. More interestingly, this compound demonstrates electronic polarization behavior being actuated by an applied magnetic field, indicating the existence of magnetoelectric(ME) coupling effect in the La0.1Ba0.9Fe12O19 ceramics. Our results may lead to new device applications such as magnetically recorded ferroelectric memory.

关键词：铁电性陶瓷场发射扫描电子显微镜磁特性晶体结构剩余极化 FESEM X射线衍射

来源：评论

学校读者我要写书评

暂无评论

Optimized microstructure and enhanced breakdown strength in Ca1−xSrxTiO3 solid solutions

Optimized microstructure and enhanced breakdown strength in ...

引用

IEEE International Symposium on Applications of Ferroelectrics (ISAF)

作者： Lin Zhang Hangxing Liu Hua Hao Minghe Cao Zhonghua Yao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei People's Republic of China

ISBN: (纸本)9781479999750

Linear dielectric materials are ideal options for energy storage application due to the typical high energy storage efficiency and breakdown strength. In the present work, linear dielectric system Ca 1-x Sr x TiO 3 (x=0~0.6) was synthesized through conventional solid state reaction method. All the samples were sintered at 1400°C and had dense and pore-free microstructures. The effects of Sr substitution on the phase transition, microstructure and ferroelectric properties were systematically investigated. Slow scanning X-ray diffraction showed that crossover region between orthorhombic phase (Pbnm) and tetragonal phase (I4/mcm) at about x=0.30-0.50 has been obtained. SEM revealed the Ca 0.6 Sr 0.4 TiO 3 ceramics exhibit the most homogeneous microstructure with fine grains. The breakdown strengths were found to be enhanced near the phase transition composition due to the optimized microstructure, Ca 0.6 Sr 0.4 TiO 3 showed the highest breakdown strength, which reached 26 kV/mm at room temperature. Additionally, HfO 2 , with a high band energy, was selected as additive into the Ca 0.6 Sr 0.4 TiO 3 system to mitigate the high-temperature and high-field loss, so that to improve the stability of energy storage efficiency under elevated temperature and electric field.

关键词： Energy storage Dielectrics Microstructure Electric breakdown Ceramics Hafnium compounds Additives

来源：评论

学校读者我要写书评

暂无评论

Manganese dioxide nanosheet functionalized sulfur@PEDOT core–shell nanospheres for advanced lithium–sulfur batteries

引用

Journal of materials Chemistry A 2016年第24期4卷 9403-9412页

作者： Min Yan Yang Zhang Yu Li Yongqi Huo Yong Yu Chao Wang Jun Jin Lihua Chen Tawfique Hasan Binjie Wang Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan Hubei China Cambridge Graphene Centre University of Cambridge 9 JJ Thomson Avenue Cambridge CB3 0FA UK FEI Company Shanghai Nanoport 399 Shengxia Road 201210 Shanghai China Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 rue de Bruxelles B-5000 Namur Belgium Department of Chemistry and Clare Hall University of Cambridge Cambridge CB2 1EW UK

Lithium–sulfur (Li–S) batteries are receiving significant attention as an alternative power system for advanced electronic devices because of their high theoretical capacity and energy density. In this work, we have designed manganese dioxide (MnO₂) nanosheet functionalized sulfur@poly(3,4-ethylenedioxythiophene) core–shell nanospheres (S@PEDOT/MnO₂) for high performance lithium–sulfur (Li–S) batteries. A PEDOT layer is used to address the low electrical conductivity of sulfur and acts as a protective layer to prevent dissolution of polysulfides. The MnO₂ nanosheets functionalized on PEDOT further provide a high active contact area to enhance the wettability of the electrode materials with electrolytes and further interlink the polymer chains to improve the conductivity and stability of the composite. As a result, S@PEDOT/MnO₂ exhibits an improved capacity of 827 mA h g⁻¹ after 200 cycles at 0.2C (1C = 1673 mA g⁻¹) and a further ∼50% enhancement compared to S@PEDOT (551 mA h g⁻¹) without MnO₂ functionalization. In particular, the discharge capacity of S@PEDOT/MnO₂ is 545 mA h g⁻¹ after 200 cycles at 0.5C. Our demonstration here indicates that the functionalization of inorganic nanostructures on conducting polymer coated sulfur nanoparticles is an effective strategy to improve the electrochemical cycling performance and stability of sulfur cathodes for Li–S batteries.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Enhancement of the thermal conductivity of Cu Matrix by addition of RGO

Enhancement of the thermal conductivity of Cu Matrix by addi...

引用

International Conference on Information Sciences,Machinery,materials and Energy（ICISMME 2015）

作者： Xiaojuan Jiang Guoqiang Luo Jing Huang Yuxin Ban Xiang Fu City college of science and technology Chongqing university State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Graphene have been condered as an ideal reinforcement material due to its fascinating physical and mechanical *** this study,the graphene reinforced the Cu matrix nanocomposites with excellent thermal conductivity have been successfully fabricated by hot pressing sintering of RGO/Cu nanocomposites powders which were prepared via situ chemical reduction method using Na BH4 as reducing *** reduced graphene oxide and prepared nanocomposites were characterized by X-ray diffraction(XRD),Fieldemission scanning electron microscope(FESEM).The FESEM shows that the graphene homogeneous dispersion on the nanocomposites ***,the thermal conductivity of graphene reinforced Cu matrix has been improved compare with the Cu matrix without addition graphene.

关键词： reduced graphene oxide copper nanocomposites

来源：评论

学校读者我要写书评

暂无评论

Proteomics: New Opportunities and Challenges of Smart Polymers in Post‐Translational Modification Proteomics (Adv. Mater. 20/2017)

引用

advanced materials 2017年第20期29卷

作者： Guangyan Qing Qi Lu Yuting Xiong Lei Zhang Hongxi Wang Xiuling Li Xinmiao Liang 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 Institute of Biomedical and Pharmaceutical Sciences College of Bioengineering Hubei University of Technology 28 Nanli Road Wuhan 430068 P. R. China Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China International School of Materials Science and Engineering Wuhan University of Technology 122 Luoshi Road Wuhan 430070 P. R. China

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：