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Enhancement of red to orange emission ratio of YPO4:Eu3+,Ce3+ and its dependence on Ce3+ concentration占世平1,高永毅1,刘云新1,钟慧21. Department of Physics and Electronic Science, Hunan University of Science... were synthesized by hydrothermal method without template. The emission spectra showed that the red emission centered at 618nm could be readily increased relatively to the orange emission centered......
Enhancement of red to orange emission ratio of YPO4:Eu3+,Ce3+ and its dependence on Ce3+ concentration占世平1,高永毅1,刘云新1,钟慧21. Department of Physics and Electronic Science, Hunan University of Science... were synthesized by hydrothermal method without template. The emission spectra showed that the red emission centered at 618nm could be readily increased relatively to the orange emission centered......
金橙G螯合树脂分离富集样品中铂,铑的研究张辉1,唐杰1(1.河北省唐山市唐山师范学院化学系)摘 要:合成了金橙G螯合树脂,并用于分离富集样品中的铂,铑.实验研究表明,分离富集试液酸度为pH 1.0,分离柱高为200 mm,通过分离柱的试液流速为0.4 mL/min时,加入铂,铑标准物质的回收率在94.5%~103%之间.标准样品经金橙G螯合树脂分离富集后,采用极谱法连续测定铂,铑,测定结果与标准值相吻合.关键词:金橙G螯合树脂； 分离富集； 铂； 铑......
Al2O3基板直接敷铜法的敷接机理研究 陈虎1,方志远1,周和平1 (1.清华大学材料科学与工程系新型陶瓷与精细工艺国家重点实验室, 北崐京 100084) 摘要:本文采用直接敷铜工艺,1070°C流动氮气氛下保温3h制得剥离强度达11.5Kg/cm2的直接敷铜Al2O3基板.界面产物CuAlO2的形成是获得较高结合强度的关键.敷接温度下,在界面上产生了能很好润湿Al2O3表面的Cu［O］共晶液体,并反应生成了连续的CuAlO2层.降温时,共晶液体从Cu侧开始固化并淀析出Cu2O颗粒.当固化前沿与CuAlO2层相遇时,液相参与的界面反应停止.冷却至室温,即可获得Cu和Al2O3基板之间的牢固结合. 关键词:直接敷铜法; 剥离强度; 界面产物; direct bonded copper(DBC); peel strength; interfacial product; [全文内......
Green, orange, and red upconversion luminescence in Nd3+/Yb3+: Cs2NaGdCl6 powders under 785 nm laser excitation王殿元1,郭艳艳2,吴杏华1,张玉霞11. College of Science, Jiujiang University2. College of Mechanical...), 603 nm (Orange), and 675 nm (Red) were observed and assigned to 4G7/2→4I9/2, (4G7/2→4I11/2; 4G5/2→4I9/2), and (4G7/2→4I13/2; 4G5/2→4I11/2), respectively. The dependences of these upconverted emissions......
was checked by the photocatalytic oxidation of methyl orange as a model compound under UV-vis light irradiation. The results show that, ALHTS catalysts acid leached by 20% sulphuric acid exhibit... recombination rate of the electron-hole pairs. The decoloration rate of methyl orange without adjusting pH reaches 87.3% under mercury lamp irradiation for 30 min. Key words: high titanium slag; hydro......
Hg2+-碘化物-吖啶橙-聚乙烯醇缔合体系褪色光度法测定痕量汞李咏梅1,2,李人宇2,张龙0,李赞2(1.江苏省连云港市淮海工学院化学工程学院2.江苏省连云港市淮海工学院江苏省海洋资源开发研究院)摘 要:在pH3.6 NaAc-HAc缓冲溶液中,聚乙烯醇存在下,Hg2+与过量的I-和吖啶橙(AO)反应生成稳定的离子缔合物[AO]2[HgI4],使AO褪色,据此建立了褪色光度法测定痕量汞的新方法.最大褪色波长为490 nm,体系的褪色程度与Hg2+浓度在0~0.8μg/mL范围内呈线性关系,表观摩尔吸光系数为9.......
Preparation of Fe3O4-octadecyltrichlorosilane for Removal of Methyl Orange and Methylene Blue: Influence of p H and Ionic Strength on Competitive Adsorption胡耀强1,2,QUAN Chaoming1,3,GUO Min1,3,叶秀深1,3,吴...(SEM),energy dispersive spectrometer(EDS),and contact angle analyzer(CA)were used to analyze the properties of Fe3O4-OTS.Methyl orange(MO)and methylene blue(MB)were selected as model molecules to study......
液; iron(Ⅲ) vanadate; photocatalysis; silver doping; methyl orange solution; [全文内容正在添加中] ......
Synthesis and characterization of carbon-TiO2-CeO2 composites and their applications in phenol degradationY.Lara-López1,2摘 要:The objective of this work was to synthesize particles of titanium oxide and cerium oxide supported on carbon, which was obtained through the pyrolysis of orange peel. The materials were characterized using scanning electron......
