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solvothermal synthesis and ferromagnetic property of bamboo-shoot-like oriented carbon micromaterials

Chinese science Bulletin 2010年第33期55卷 3838-3841页

作者： YANG YongZhen1,2.LIU XuGuang1,3,REN WenFang1,3,QIU Li1,3 & XU Bingshe1,2.1key laboratory of Interface science and Engineering in {2. Materials(Taiyuan university of Technology),Ministry of Education,Taiyuan 03002.,china 2.ollege of Materials science and Engineering,Taiyuan university of Technology,Taiyuan 03002.,china 3College of Chemistry and Chemical Engineering,Taiyuan university of Technology,Taiyuan 03002.,china key laboratory of Interface science and Engineering in {2. Materials (Taiyuan university of Technology) Ministry of Education Taiyuan 030024 China College of Materials science and Engineering Taiyuan University of Technology Taiyuan 030024 China College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan 030024 China

Bamboo-shoot-like oriented carbon micromaterials(BOCMs)were synthesized by a solvothermal method at 450°C for 4 h using deoiled asphalt(DOA)as carbon source,toluene as solvent,ferrocene as catalyst precursor and amphiphilic triblock copolymer P12. as *** morphology and structure of the products were characterized by X-ray diffraction,field emission scanning electron microscopy,high resolution transmission electron microscopy and Fourier transform infrared *** results reveal that the obtained products have good distribution with uniform diameters of about 0.5 ?m and the lengths of 1-1.5 μm,and hydrogen-carbon bonds are observed on the surface of *** growth mechanism of BOCMs is discussed,in which that the catalysis of ferrocene and the dispersion and assembly of the aromatic molecules of DOA directed by P12. are critical to the formation of the *** coercivity value(2.1.91 Oe)from the measurement of a vibrating sample magnetometer shows that the BOCMs have an obvious ferromagnetic behavior.

关键词：溶剂热合成铁磁性碳源场发射扫描电子显微镜高分辨透射电子显微镜傅里叶变换红外光谱两亲嵌段共聚物振动样品磁强计

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synthesis,characterization,structures and magnetic property of chiral oxalate-bridged dicopper(Ⅱ) complexes

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science china Chemistry 2010年第6期53卷 1255-1260页

作者： WU Ling1,WANG Jun2.ZHU CaiFei1,LIN YiJi1,CHEN LeiQi1,FAN Jun2.& ZHANG Hui1 1state key {2. of Physical Chemistry of solid surfaces Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen university,Xiamen 361005,china 2.chool of Chemistry and Environment,south china Normal university,Guangzhou 510006,china 1. state key {2. of Physical Chemistry of solid surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China2. School of Chemistry and Environment South China Normal University Guangzhou 510006 China

The oxalato-bridged dicopper(II) complexes [Cu2.μ-ox)(LRR)2.H2.)2.ClO4)2. (1),[Cu2.μ-ox)(LRR)2.CH3COCH3)2.ClO4)2.(1a),[Cu2.μ-ox)(Lss)2.H2.)2.ClO4)2. (2. and [Cu2.μ-ox)(LRR)(Lss)2.CH3COCH3)2.ClO4)2. (3) [LRR = (8R,10R)-(-)-[4,5]-pineno2.2.-bipyridine,Lss = (8s,10s)-(+)-[4,5]-pineno-2.2.-bipyridine;ox2. oxalate] were first prepared.A possible mechanism for the formation of the chial dicopper(II) complexes was *** on elemental analysis,conductance measurement,UV-Vis spectra,CD spectra and X-ray single-crystal diffraction,the oxalato-bridged structures of 1 and 2.were deduced to adopt two Cu(II) ions and the bridged oxalate lying in the nearly same *** crystal structures of 1a and 3 reveal that the coordination geometry around each Cu(II) ion is an elongated and distorted octahedron and two axial solvent molecules and two perchlorate ions are anti to each other respectively in both binuclear *** solution CD spectra of 1 and 2.in the visible d-d range show very weak Cotton effects with peaks at 588 and 779 nm,which are approximately of mirror image,suggesting the optical activities may be derived from the vicinal effects of the chiragenic centers at the pinene group of LRR and Lss,*** 1 has been characterized by variable-temperature magnetic susceptibility and the data was least-square fitted to the Blenaey-Bowers *** exchange integral J was found to be -338.41(4) cm-1,indicating a strong antiferromagnetic interaction between two copper(II) ions.

关键词： dicopper(II) complex chiral bipyridine μ-oxalate bridge crystal structure CD spectroscopy magnetic property

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Preparation, Characterization and Photocatalytic Activity of In situ Iron Doped TiO2.Thin Films

Preparation, Characterization and Photocatalytic Activity of...

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2.04全国太阳能光化学与光催化学术会议

作者： Jiaguo Yu, Huogen Yu (state key {2. of advanced Technology for Material synthesis and processing. wuhan university of Technology, wuhan, 43.070, P. R. of china

＜正＞ Iron-doped TiO2.thin films were in situ prepared on stainless steel substrates by liquid phase deposition（LPD）method andcalcined at various temperatures for 1 *** detailed experimental procedures are as follows:The aqueous solutions ofammonium hexafluouotitanate and boric acid were mixed,stirred and used as the treatment *** concentrations inthe treatment solution werc 0.1 mol·L-1 for ammonium hexfluorotitanate and 0.3 mol·L-1 for boric *** within the

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FORMATION AND CHANGE OF Ausn_4 COMPOUNDs AT INTERFACE BETWEEN PBGA sOLDER BALL AND Au/Ni/Cu METALLIZATION DURING LAsER AND INFRA-RED REFLOW sOLDERING

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Acta Metallurgica sinica(English Letters) 2004年第2期17卷 199-204页

作者： Y.H.Tian C.Q.Wang state key {2. of advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,china state key {2. of advanced Welding Production Technology Harbin Institute of TechnologyHarbin 150001China

Interactions between 63sn37Pb solder and PBGA metallization (Au/Ni/Cu) duringlaser and infrared reflow soldering were studied. During laser reflow soldering process,a thin layer of Ausn_4 was observed at the interface of the solder bumps, its morphologywas strongly dependent on the laser reflow power and heating time. The solder bumpsformed by the first laser reflow was reflowed again to form the solder joints. TheAusn_4 compounds formed in the first laser reflow process dissolved into the bulk solderafter the secondary infrared reflow process. The needle-like Ausn_4 changed into rod-like, and distributed inside the solder near the solder/pad interface.

关键词： laser reflow infrared reflow bump's microstructure solder joint

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Expression of hepatitis B virus surface antigen in 12. Hodgkin's lymphoma patients

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Chinese Journal of Cancer 2010年第8期29卷 735-740页

作者： Miao-Zhen Qiu1,2. Dan-Yun Ruan1,2. Zhi-Qiang Wang1,2. Hui-Yan Luo1,2. Kai-Yuan Teng1,2. Zhong-Jun Xia1,3, Yue Lu1,3, Hui-Qiang Huang1,2. Wen-Qi Jiang1,2. Rui-Hua Xu1,2.1 state key {2. of Oncology in south china, sun Yat-sen university Cancer Center, Guangzhou, Guangdong 510060, P. R. china 2.Department of Medical Oncology, sun Yat-sen university Cancer Center, Guangzhou, Guangdong 510060, P. R. china 3 Department of Hematology Oncology, sun Yat-sen university Cancer Center, Guangzhou, Guangdong 510060, P. R. china sun Yat-sen university Cancer Center State Key Laboratory of Oncology in South China Guangdong Guangzhou 510060

Background and Objective: Little is known about the incidence of hepatitis B virus (HBV) infection in Hodgkin's lymphoma patients. This study was to evaluate the impact of HBV infection on the survival of Hodgkin's lymphoma patient. Methods: Clinical data of 12. Hodgkin's lymphoma patients treated at the sun Yat-sen university Cancer Center between January 2.04 and October 2.07 were collected. The impact of prognostic factors including HBV infection on survival was examined by univariate and multivariate analyses. A log-rank test was used for univariate analysis and the Cox proportional hazards regression model was used for multivariate analysis. Results: Of the 12. patients, 18 (15.0%) were hepatitis B virus surface antigen (HBsAg)-positive. The HBsAg-positive patients had lower 5-year survival rate than did the HBsAg-negative ones (66.9% vs. 91.3%, P = 0.006). When the patients were divided into early-stage (Ⅰ+Ⅱ) and {2.-stage (Ⅲ+Ⅳ) groups, the 5-year survival rate was significantly different between the HBsAg-positive and -negative patients in early-stage group (64.8% vs. 96.0%, P significantly different in {2.-stage group (75.0% vs. 84.8%, P=0.667). Both univariate and multivariate analyses showed that radiotherapy and HBV infection were independent prognosis factors for the patients with early-stage Hodgkin's lymphoma (P=0.006 and 0.014, respectively). Conclusions: The incidence of HBV infection is similar between Hodgkin's lymphoma patients and normal population. HBV infection is an independent prognosis factor for survival in the patients with early-stage Hodgkin's lymphoma.

关键词：乙肝病毒表面抗原淋巴瘤患者乙肝表面抗原多因素分析金病毒感染肝炎病毒

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PEMFC二维稳态水传输模拟分析

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武汉理工大学学报 2010年第5期32卷 12-15页

作者：张鑫罗马吉罗志平詹志刚武汉理工大学汽车工程学院武汉430070 武汉理工大学材料复合新技术国家重点实验室武汉430070

建立了一个二维稳态等温的质子交换膜燃料电池(PEMFC)模型用于研究电池内部水传输机理。模型综合考虑了电池中的动量守恒、质量传输和电荷守恒,以及催化层中的电化学反应。通过计算预测了电池在特定条件下的极化曲线,曲线趋势和试验结... 详细信息

建立了一个二维稳态等温的质子交换膜燃料电池(PEMFC)模型用于研究电池内部水传输机理。模型综合考虑了电池中的动量守恒、质量传输和电荷守恒,以及催化层中的电化学反应。通过计算预测了电池在特定条件下的极化曲线,曲线趋势和试验结果吻合良好。模拟分析电池内部水传输机理表明:电流密度增加会加强水从阳极向阴极的迁移,使膜的阳极侧脱水;进气湿度对水的传输有较大的影响,减小任何一侧气体的相对湿度会使膜大范围干燥,导致电池性能下降。

关键词：质子交换膜燃料电池稳态水传输含水量

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Effect of additive elements on exchange coupling and spin reorientation transition of nanocrystalline single-phase Nd-Fe-B alloy

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science china(Technological sciences) 2010年第9期53卷 2323-2327页

作者： BAO XiaoQian,GAO XueXu,ZHU Jie & ZHOU shouZeng state key {2. for advanced Metals and Materials,university of science and Technology Beijing,Beijing 100083,china 1. state key {2. for advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

Nd12.3Fe81.7-xZrxB6.0 (x=0,1.5) and (NdDyTb)12.3(FeZrNbCu)81.7-yCoyB6.0 (y=0,12. ribbons were prepared by melt spinning at 2. m/s and subsequent *** influences of Zr,Dy/Tb and Co substitutions on magnetic properties and spin reorientation transitions of nanophase Nd2.e14B have been systematically *** with Zr-free sample,the remanence,intrinsic coercivity and maximum energy product for Nd12.3Fe80.2.r1.5B6.0 ribbon increase by 10.8 %,17.8 % and 60.2.%,*** significant improvement of magnetic properties originates from the finer grains of the sample by introducing Zr,which leads to the stronger exchange coupling between neighboring *** intrinsic coercivity for (DyTb)-substituted ribbon is significantly increased although the remanence is reduced,which could be compensated by the substitution of Co for *** spin reorientation temperature Tsr of nanocrystalline Nd2.e14B alloys was determined by measuring the ac magnetic *** was found to be lower than that of bulk *** substitutions of Zr,Dy/Tb and Co result in reduction of *** smaller the grain size,the lower the Tsr will *** of spin reorientation on magnetization characteristics of nanophase Nd2.e14B was discussed.

关键词： nanocrystalline Nd-Fe-B magnet exchange coupling spin reorientation transition magnetic properties

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Mo添加对Ni_3Al-TiC润湿特性的影响机制研究

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无机材料学报 2002年第6期17卷 1306-1310页

作者：沈强张联盟涂溶武汉理工大学材料复合新技术国家重点实验室武汉430070

采用2.P-LEITZ高温显微镜对TiC-Ni3Al的润湿接触角进行了实验测定,着重探讨了Ni3Al对TiC的润湿特性以及Ni3Al中添加少量Mo的影响机制.结果表明,TiC与Ni3Al之间具有良好的润湿性能.5wt％Mo的添加使Ni3Al向TiC基板浸渗的深度增大,并与TiC... 详细信息

采用2.P-LEITZ高温显微镜对TiC-Ni3Al的润湿接触角进行了实验测定,着重探讨了Ni3Al对TiC的润湿特性以及Ni3Al中添加少量Mo的影响机制.结果表明,TiC与Ni3Al之间具有良好的润湿性能.5wt％Mo的添加使Ni3Al向TiC基板浸渗的深度增大,并与TiC颗粒发生固溶反应置换出部分Ti,在其周围形成一个含Mo的壳层.在这个壳层里,Ti、Mo进一步与Ni3Al固溶,这些反应降低了液-固表面张力,导致了润湿接触角的下降,从而改善了TiC-Ni3Al的润湿性.

关键词： Ni3Al-TiC Mo 润湿特性影响机制钼添加剂镍铝合金碳化钛陶瓷增强金属基复合材料

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Preparation of layered oxide Li(Co1/3Ni1/3Mn1/3)O2.via the sol-gel process

Preparation of layered oxide Li(Co1/3Ni1/3Mn1/3)O2 via the S...

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2.06年中国固态离子学暨国际电动汽车动力技术研讨会

作者： Wen zhang Hanxing Liu Cheng Hu Xiaoyan Gan state key {2. of advanced Technology for Material synthesis and processing wuhan university of technology wuhan 43.070 Hubei P.R.china

＜正＞In order to get homogenous layered oxide Li（Co1/3Ni1/3Mn1/3）O2.as a lithium insertion positive electrode material, we applied sol-gel process using citric acid as a chelating agent. The oxide compounds were synthesized under different annealing temperature. XRD experiment revealed that the layered Li（Co1/3Ni1/3Mn1/3）O2.material can be synthesized at lower temperature of 800 ℃, and the oxidation state of Co, Ni, and Mn in the cathode confirmed by XPs were 3+, 2.and 4+, respectively. sEM observation shows that the synthesized materials have homogenous particle morphology and the particle size is about 2.0 nm. In spite of different calcination temperature, the charge-discharge curves of all the samples for the initial cycle are similar, and the cathode synthesized at 900 ℃ showed small irreversible capacity loss of 11.2.% and high discharge capacity of 2.2.2.Ahg-1 in the voltage range 2.9-4.6VLi/Li+.

关键词： Lithium-ion battery sol-gel process Li(Co1/3Ni1/3Mn1/3)O2

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Effect of Thermal Treatment and Acid Leaching Process on Pore Characteristics of Nanometer Porous Glass

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Journal of wuhan univer{2. of Technology(Materials science) 2007年第1期22卷 129-131页

作者：韩建军 key laboratory of silicate Materials science and Engineering Ministry of Education Wuhan University of Technology

Porous glass was prepared by thermally treating sodium borosilicate glass for different time, the effect of thermal treatment on pore size distribution was discussed and the pore size of the prepared porous glass was measured by scanning electron microscopy （sEM） and differential thermal analysis （DTA）. The results show that the optimum porous glass with an average diameter of 80 nm can be prepared by thermal treatment at 600℃ for 12.h and then acid treatment for 12.h in 2.mol·L^-1 hydrochloric acid solution.

关键词： porous glass: thermal treatment sodium borosilicate glass phase-separate

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