【摘 要】
：
Nanowires/nanorods of europium/terbium orthophosphate monohydrate with Eu3+ concentration of 6,11,and 20 at.％ were prepared by microwave synthesis method.The eff
【机 构】
：
Institute of Materials Science,University of Engineering and Technology
论文部分内容阅读
Nanowires/nanorods of europium/terbium orthophosphate monohydrate with Eu3+ concentration of 6,11,and 20 at.％ were prepared by microwave synthesis method.The effects of Eu3+ doping concentration on structure,morphology and optical properties of nanomaterials were also investigated.The results showed that,for all studied Eu3+ doping concentrations,a single-crystalline phase of rhabdophane-type (Eu,Tb)PO4·H2O nanowires/nanorods was obtained by using microwave heating of an aqueous solution of terbium(Ⅲ) nitrate,europium(Ⅲ) nitrate and NH4H2PO4 with pH=2.The length and width of these nanowires/nanorods ranged from 150 to 300 nm and from 10 to 50 nm,respectively.The evidence of energy transfer from Tb3+ to Eu3+ due to the energy overlap between the donor Tb3+ and the acceptor Eu3+was observed obviously via a significant enhancement in the luminescent intensity of Eu3+.
其他文献
幼儿园小班幼儿刚刚离开家，进入幼儿园，面对陌生的周围环境，大多会表现不安、困惑、烦躁等不良情绪，甚至影响一天的正常生活节奏。针对小班幼儿进行一日常规的培养，不仅涉及到对幼
目的：对异位妊娠进行研究分析。方法通过对患者的临床诊断和表现来进行探讨分析。结论一般症状明显，具有典型性的宫外孕，其诊断不会太难，可是因为某些病例存在一些不典型症状，以至
小学语文阅读教学是学生、教师与文本三者相互沟通、平等对话的过程，是培养和发展学生对语言文字的理解能力和表达能力的重要手段。如何提高阅读教学的效率？本文通过多年来小学
煤矿的安全思想教育工作，是任何一项机制所无法替代的，要通过不断创新和探索，安全教育方式方法从枯乏的批评、单一的说教、硬性的制约，改进到人本安全教育亲情化上。通过父母亲、
The magnetization measurements of gallium nitride nanoceramics doped with 1% of cerium and sintered under various pressures were reported.It was found that GaN
我国金属与非金属矿山安全标准化实施的原因与发展趋势，针对安全标准化主要内容，对安全标准化实施过程中存在的问题，提出了相应的对策。并且构建动态的、实时性的考评信息网络化
Compositional-dependent heavy metal lead borate glasses doped with Tb3+ ior were investigated.Green luminescence related to main 5D4→7F5 (543 nm) transition wa
腐蚀是材料和周围环境发生化学或电化学反应而引起的一种消损破坏，自然环境会造成材料的腐蚀。近年发生的一系列自然灾害和安全事故，都实实在在地证明了腐蚀和腐蚀隐患是这些事
The absorption and emission spectra as well as decay time profile of Dy3+ ions in LaAlO3 nanocrystals were analyzed.The crystal structure of LaAlO3 was confirme
Core/shell structured CePO4:Tb(Ⅲ)@LaPO4 and CePO4:Tb(Ⅲ) were successfully synthesized in tris(2-ethylhexyl) phosphate (TEHP) and diethylene glycol (DEG) solve