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methyl orange under UV radiation. The results show that the photocatalytic activity of the TiO2 thin film can be evidently enhanced by Mn non-uniformly doping in the bottom layer and can be decreased by Mn doping in the surface layer. The activity of TiO2 thin film can be evidently enhanced by Zn non-uniform doping in either the bottom or the surface layer. But the activity of TiO2 is less affected......
Sticking of iron ore pellets in direct reduction with hydrogen and carbon monoxide: Behavior and preventionYI Ling-yun(易凌云), HUANG Zhu-cheng(黄柱成), LI Tie-hui(李铁辉), JIANG Tao(姜涛) (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China)Abstract:A series of reduction experiments of iron ore pellets with hydrogen, carbon monoxide and their mixture were......
STUDY ON THE VARIATION MECHANISM OF CARBON CONTENT OF LIQUID IRON IN MELTING GASIFIER Y.Xu1,Q.L2,L.Y.Sun1,Q.F.Chai3 (1.U;2.U)(U;3.Hebei Institute of Vocation and Technology, Shijiazhuang 050031, China) Abstract:This paper studied the changing principles of carbon content in direct reduction iron(DRI) and liquid iron in the COREX melting gasifier. Under the normal workingconditions......
纳米TiO2薄膜的低温制备 柳清菊1,王庆辉1,张瑾1,朱忠其1,靳映霞1 (1.云南大学,材料科学与工程系,云南,昆明,650091) 摘要:采用液相沉积法,在90℃下制备了纳米锐钛矿型TiO2薄膜.采用XRD,UV透射光谱,薄膜表面接触角的测量,厚度的测量及亚甲基蓝降解等手段研究了TiO2薄膜的性能.结果表明:所制备的TiO2薄膜具有较好的超亲水特性及光催化活性,在可见光范围内具有较好的透明性,其平均透光率在80%以上. 关键词:纳米TiO2薄膜; 低温制备; 液相沉积; 亲水性; 光催化; [全文内容正在添加中] ......
Laser Surface Remelting of Medium Ni-Cr Infinite Chilling Cast Iron Roll XIE Song-jing1,ZHANG Qun-li1,YAO Jian-hua1 (1.Zhejiang University of Technology, Hangzhou, China) 摘要:Laser surface remelting of medium Ni-Cr infinite chilling cast iron was performed with a continuous wave CO2 laser beam with the power of 7 KW under the argon shielding. The microstructural analysis of the laser remelted......
纳米TiO2研究进展 朱艳1,陆涛1 (1.西安工程大学环化学院,陕西,西安,710072) 摘要:主要介绍了纳米TiO2的特性,制备与表征方法,及其发展,应用的情况,并且指出了纳米TiO2的研究方向及存在问题. 关键词:纳米TiO2; 制备; 表征; 特性; 应用; [全文内容正在添加中] ......
纳米TiO2粉体的低温制备 柳清菊1,王庆辉1,张瑾1,朱忠其1,靳映霞1 (1.云南大学材料科学与工程系,昆明,650091) 摘要:采用液相沉积法制备锐钛矿型 TiO2纳米光催化粉体,研究了沉积温度,反应物的摩尔比,沉 积时间,[TiF6]2-水溶液的浓度等对 TiO2粉体性能的影响.用甲基橙的光催化降解表征了所制备 的 TiO2粉体的光催化活性.结果表明光催化活性最佳的实验参数为:温度为 90℃,( NH4) 2TiF6与 H3BO3的摩尔比为 1: 2.5,沉积时间为 1h,加水量为 320ml. 关键词:纳米 TiO2粉体; 低温制备; 液相沉积; 光催化; [全文内容正在添加中] ......
阳极氧化制备TiO2纳米多孔膜 王炜1,陶海军1,王玲1,陶杰1 (1.南京航空航天大学,材料科学与技术学院,江苏,南京,210016) 摘要:分别在氢氟酸和硫酸两种电解液体系下对纯钛(TA1)试样进行阳极氧化,在钛的表面获得TiO2纳米多孔膜.利用膜的颜色的不同来判断膜的厚度的变化,用FESEM观察了孔的形貌和结构并用XRD测试了TiO2膜的晶型,进而研究了阳极氧化电压对孔径和多孔膜晶型的影响并对多孔膜的形成机理进行了阐述. 关键词:阳极氧化; TiO2多孔膜; [全文内容正在添加中] ......
Research on cathode material of Li-ion battery by yttrium doping LIU Liying1,QU Tao2,KANG Xiaoxue2,TIAN Yanwen2,XU Chaqing2 (1.Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou 516006, China;2.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract:Modification of LiFePO4, LiMn2O4 and Li1+xV3O8 by doping yttrium......
