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Electrospun CuFe2O4 nanotubes as anodes for high-performance lithium-ion batteries

Shengjie、Peng、Linlin 等 6 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

Herein,we report on the synthesis and lithium storage properties of electrospun one-dimensional(1D) CuFe2O4 nanomaterials.1D CuFe2O4nanotubes and nanorods were fabricated by a single spinneret electrospinning method followed by thermal decomposition for removal of polymers from the precursor fibers.The as-prepared CuF…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationMagnetic Properties and Synthesis of Ferrites

Dynamic globularization prediction during cogging process of large size TC11 titanium alloy billet with lamellar structure

Hongwu、Song、Shihong 等 6 位作者2014-01-01Defence Technology

The flow behavior and dynamic globularization of TC11 titanium alloy during subtransus deformation are investigated through hot compression tests. A constitutive model is established based on physical-based hardening model and phenomenological softening model. And based on the recrystallization mechanisms of globulari…

High Temperature Alloys and CreepMetallurgy and Material FormingMetal Alloys Wear and Properties

Extraction of ytterbium via co-reduction of Al(III) and Yb(III) from LiCl-KCl melt on W electrode

Yun XueHao2014-01-01OpenAlex

Anhydrous ytterbium chloride was obtained via solid-phase reaction from Yb2O3 with AlCl3 as a chlori- nation agent. The electrochemical behavior of the chlori- dized Yb2O3 was investigated on W electrodes in LiCl- KCl and LiCl-KCl-AlCl3 melts by cyclic voltammetry and square wave voltammetry. The results showed that t…

Extraction and Separation ProcessesMolten salt chemistry and electrochemical processesMetallurgical and Alloy Processes

Facile one-pot synthesis of mesoporous heteropolyacids-silica hybrid for catalytic wet hydrogen peroxide oxidation of phenol

Xiaowei WuXiaofei ChenHongyu Guan、Xiaohong WangLi Chen2014-01-01OpenAlex

The fabrication of molybdovanadophosphoric acids incorporated into SBA-15 mesoporous silicas has been achieved via a one-pot procedure. The as-obtained composite materials were well characterized by XRD, TEM, and nitrogen adsorption-desorption which indicated that the composite materials possessed good mesoporous char…

Metal-Organic Frameworks: Synthesis and ApplicationsMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications

Acetylation of alcohols and phenols under solvent-free conditions using copper zirconium phosphate

Abdol、Hajipour、Hirbod 等 4 位作者2014-01-01催化学报

什么时候在层之间被设置,而材料的 crystallinity 被减少。没有任何看得清的减少,这 nanocatalyst 能也在它的催化活动被恢复并且再使用至少六次。为白酒和酚的 acetylation 的这个新方法有几个关键优点,包括温和、环境地友好的反应条件,以及对优秀收益和灵巧的病情的检查好。

Polyoxometalates: Synthesis and ApplicationsChemical Synthesis and ReactionsVanadium and Halogenation Chemistry

Enhancing Heterogeneous Catalytic Activity of Iron(II) Phthalocyanine by Ethanol and Its Application in 2,4-dichlorophenol Detection

Tong Yili2014-01-01OpenAlex

A chemical system for facile and accurate detection of 2,4-dichlorophenol(DCP) via iron(II) phthalocyanine(Fe(II)Pc) catalyzed chromogenic reaction is reported for the fi rst time. In this system, DCP could be oxidized by dioxygen with the catalysis of Fe(II)Pc and then coupled with 4-aminoantipyrine(4-AAP) to generat…

Electrochemical sensors and biosensorsPorphyrin and Phthalocyanine ChemistryElectrochemical Analysis and Applications

Synthesis and field emission properties of carbon nanotube films modified with amorphous carbon nanoparticles by a simple electrodeposition method

Juan、Yang、Xing-Bin 等 10 位作者2014-01-01中国化学快报:英文版

多围的碳 nanotube (MWCNT ) 上的非结晶的碳 nanoparticles (a-CNPs ) 电影,在硅底层上扔了,从 polydiallyldimethylammonium 的甲醇暂停用电极淀积联合被综合修改氯化物的 MWCNT。MWCNT 的低电压的 electrophoretic 免职和 a-CNPs 的高电压的电气化学的免职被执行在 MWCNT 的表面上产出同质地依附的 a-CNPs,并且与对底层的好粘附形成一部合成电影。这种可伸缩的技术能生产 a-CNP/MWCNT 电影的一个大区域。并且地排放调查证明 a-CNP/MWCNT 电影有 3.17 V m1 的刺激电场(在 10 一 cm2 ) 并且 4.6…

Carbon Nanotubes in CompositesConducting polymers and applicationsPhotonic Crystals and Applications

Ageing mechanisms and reliability of graphene-based electrodes

Yuanyuan、Shi、Yanfeng 等 9 位作者2014-01-01纳米研究:英文版

为下一代设备的灵活透明电极的发展在碳电子学研究作为主要话题被指定下一五年了。在迄今为止测试的材料, graphene 和 graphene 基于的所有候选人之中, nanocomposites 显示出高效。尽管一些早期的反氧化测试被报导了,估计基于碳的电极的可靠性的在里面深的变老研究以前从来没被执行过。在这个工作,我们在场估计 graphene 电极的变老的机制的造成分裂的方法论,它对另外的 carbonbased 和二维的材料也可扩展。在执行加速的氧化测试以后,我们用尽一切地分析把 nanoscale 和设备水平实验与 Weibull 概率的分析和通道水流模拟相结合的电极的收益,基于 Fowler-Nordheim/Direct…

Graphene research and applicationsAdvanced Memory and Neural ComputingMolecular Junctions and Nanostructures

Fabrication and characterization of freestanding β-SiC/SiO_xC_y/C_(free) heat dissipation ceramic films by precursor method

Yao Rong-qia2014-01-01Journal of Functional Biomaterials

Freestandingβ-SiC/SiOxCy/Cfreenanocomposite films were synthesized by melt spinning the polycarbosilane(PCS)precursor.Their microstructure were characterized by Fourier transform infrared(FT-IR),Xray diffraction(XRD)and Raman spectroscopy,morphology analysis was investigated by scanning electron microscope(SEM).Resist…

Advanced ceramic materials synthesisSilicon Carbide Semiconductor TechnologiesAluminum Alloys Composites Properties

Effect of Y3+, Gd 3+and La3+dopant ions on structural, optical and electrical properties of o-mullite nanoparticles

Sanad、Rashad、Abdel-Aal 等 5 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

M (x) Al6 (1x ) Si2O13 的绝缘的陶艺做了多铝红柱石经由一起沉淀被综合技术。X 光检查衍射侧面表明这些 nanoparticles 被使结晶很好,多铝红柱石单位房间的卷作为掺杂物离子的离子的半径的一个函数被增加。TEM 图象为纯多铝红柱石样品显示出常规斜方晶的水晶形态学。同时,做的样品展出了更大的粒子尺寸的稍微弄歪的晶体形态学。表示的 DSC thermograms 多铝红柱石的发热的山峰温度与 M3+ 被转移到更低的价值离子插入。光致发光系列为多铝红柱石样品被学习,并且排放系列的紧张被 M3+ 离子类型影响,这被发现。它被发现那, Y3+ 做了完成的多铝红柱石在收音机波浪频率区域(1 MHz ) 的 0.01…

Luminescence Properties of Advanced MaterialsSilicon Nanostructures and PhotoluminescenceMicrowave Dielectric Ceramics Synthesis

Synthesis of kalsilite from microcline powder by an alkali-hydrothermal process

Shuang-qing、Su、Hongwen 等 10 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

29 旋转原子磁性的回声的 Si 魔术的角度( 29 Si 妈 NMR ), 27 艾尔妈 NMR ,和扫描电子显微镜( SEM )。与增加温度, microcline 粉末转变成亚稳的 KAlSiO 在进一步转变成纯 kalsilite 前的 4 多形体。kalsilite 和亚稳的 KAlSiO 的混合物 当热水的反应在 2 h 以内被执行时, 4 多形体被获得;但是在 2 h 以后, kalsilite 是占优势的产品。KOH 的集中,需要比 4.3 M 大,是影响 kalsilite 的合成的一个重要参数。

Zeolite Catalysis and SynthesisMesoporous Materials and CatalysisChemical Synthesis and Characterization

Efficient fixation of CO 2 at mild conditions by a Cr-conjugated microporous polymer

Yong、Xie、Ruixia 等 10 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

We reported a bifunctional material, Cr-salen implanted conjugated microporous polymer(Cr-CMP), which is able to capture excellent CO2amounts and has a remarkable catalytic activity towards the cycloaddition reaction of CO2to epoxides forming cyclic carbonates at mild conditions without additional solvents. This heter…

Metal-Organic Frameworks: Synthesis and ApplicationsCarbon dioxide utilization in catalysisCovalent Organic Framework Applications

Synthesis of a new ordered mesoporous NiMo04 complex oxide and its efficient catalytic performance for oxidative dehydrogenation of propane

Xiaoqiang、Fan、Jian-mei 等 14 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

Highly ordered mesoporous NiMoO4material was successfully synthesized using mesoporous silica KIT-6 as hard template via vacuum nanocasting method. The structure was characterized by means of XRD, TEM, N2adsorption-desorption, Raman and FT-IR. The mesoporous NiMoO4with the coexistence of α-NiMoO4and β-NiMoO4showed wel…

Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsOxidative Organic Chemistry Reactions

Cytotoxicity of superparamagnetic iron oxide nanoparticles modified by chitosan or sodium oleate

Tian Ming-d2014-01-01Academic Journal of Second Military Medical University

Objective To investigate the cytotoxicity of superparamagnetic iron oxide nanoparticles(SPIONs)modified by chitosan or sodium oleate,so as to provide experimental evidence for future clinical application.Methods The morphology of chitosan-SPIONs or sodium oleate-SPIONs was observed by transmission electron microscope(…

Nanoparticle-Based Drug Delivery

Effect of Heat Treatment on Microstructures and Mechanical Properties of Hot-Dip Galvanized DP Steels

Enbao、Pan、Hong-shuang 等 8 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

以便模仿热剧降的电镀双阶段(DP ) 钢(wt%) 0.15C0.1Si1.7Mn, DP 钢被不同退火获得时间表。在铁酸盐谷物,马氏体的体积部分,和马氏体的好结构上浸泡温度,时间,和冷却的率的效果被学习。结果证明 DP 钢的收益力量(YS ) 对退火敏感安排,当全部的延伸没在退火上有显著依赖时时间表。增加从 790 ~ 850 浸泡温度吗??

Corrosion Behavior and InhibitionElectronic Packaging and Soldering TechnologiesSmart Materials for Construction

Microstructure and abrasive wear behaviour of anodizing composite films containing Si C nanoparticles on Ti6Al4V alloy

李松梅、郁秀梅、刘建华 等 6 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

Anodized composite films containing Si C nanoparticles were synthesized on Ti6Al4 V alloy by anodic oxidation procedure in C4O6H4Na2 electrolyte. Scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and X-ray photoelectron spectroscopy(XPS) were employed to characterize the morphology and composition…

Corrosion Behavior and InhibitionAdvanced Machining and Optimization TechniquesAnodic Oxide Films and Nanostructures

Computational Investigation of the Substituent Effect on the Intramolecular Proton Transfer Reaction of 3-Hydroxytropolone

GüL、Vedat、Ivnitskaia In 等 5 位作者2014-01-01结构化学

The effects of substituent type and position on the proton transfer reaction of 3-hydroxytropolone(3-OHTRN) have been investigated theoretically by using density functional theory at the level of B3LYP/ 6-31+G** method. The influence of solvent on the proton transfer reactions of substituted 3-OHTRN has been examined…

Porphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer StudiesFree Radicals and Antioxidants

Mechanical property enhancement of PVDF/graphene composite based on a high-quality graphene

Chaozhi YuDelong LiWenhui Wu、Chengzhi LuoYupeng ZhangChunxu Pan2014-01-01OpenAlex

In this paper, we adopted hot-pressing treat- ment to convert the regular reduced graphene oxide (RGO) from chemical exfoliation to the high-quality graphene (HQG), and then the HQG/poly vinylidene fluoride (PVDF) composite films were prepared by spin coating. The microstructural characterizations and property mea- su…

Graphene research and applicationsAdvanced Sensor and Energy Harvesting MaterialsDielectric materials and actuators

In-plane Uniaxial Anisotropy and Magnetization Reversal Mechanism of FeCo Films by Strip Pattern

Xuemeng、Han、Jinhua 等 10 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

像长带的 FeCo 电影由从内在地各向同性的连续 FeCo 电影的一个传统的平版画过程是有图案的。长带有图案的 FeCo 电影显示出一架强壮的在里面飞机有沿着长带的长度方向的容易的轴的单轴的磁性的 anisotropy。当应用的地分别地在难轴和容易的轴附近时,顽磁比率,切换的地,和 coercivity 的尖依赖显示长带有图案的 FeCo 电影的磁化颠倒机制是协调旋转和领域墙 depinning。长带有图案的 FeCo 电影和计算磁滞现象的试验性的磁滞现象环的一致性与单轴的 anisotropy 模型显示的一架简单在里面飞机循环长带有图案的 FeCo 电影作为单个域表现。墙和强壮的在里面飞机 anisotropy 域使长带有图案的…

Magnetic properties of thin filmsMagnetic Properties and ApplicationsMagnetic Properties of Alloys

A fluid dynamics route for producing graphene and its analogues

Min Min、Yi、Zhigang 等 6 位作者2014-01-01中国科学通报:英文版

A novel fluid dynamics route for scalable and efficient production of graphene and its analogues is demonstrated.Atomic force microscopy and transmission electron microscopy analyses strongly suggest that the bulk layered materials(graphite,BN,MoS2,and WS2)are efficiently exfoliated into individual layers containing m…

Graphene research and applicationsDiamond and Carbon-based Materials ResearchIon-surface interactions and analysis