Experimental and Theoretical Studies on the Controlled Synthesis of   Alkali-Metal-Doped Rare-Earth Oxysulfide Nanocrystals

doi:10.1002/cplu.201300092

CORC > 北京大学 > 化学与分子工程学院

	Experimental and Theoretical Studies on the Controlled Synthesis of Alkali-Metal-Doped Rare-Earth Oxysulfide Nanocrystals
	Zhang, Tao ; Gu, Jun ; Ding, Yi ; Zhang, Ya-Wen ; Yan, Chun-Hua
刊名	chempluschem
	2013
关键词	density functional calculations doping lanthanides nanoparticles phase diagrams SINGLE-SOURCE PRECURSOR TRIFLUOROACETATE PRECURSORS LANTHANUM OXYSULFIDE OPTICAL-PROPERTIES EUS NANOCRYSTALS MONODISPERSE FLUORIDE BASES ACIDS SIZE
DOI	10.1002/cplu.201300092
英文摘要	Alkali-metal (Li, Na, K)-doped lanthanum oxysulfide nanoplates were obtained in the hexagonal phase by thermolysis of metal acetylacetonates in organic solvents with high boiling points and sulfurization using sulfur powders. The characterization results showed that the size, shape, crystallinity, composition, and phase stability of the La2O2S nanocrystals were affected by the doped alkali metals. Combined with first-principles calculations of the formation energy of anionic defects in the lattices, the ternary phase diagrams for the formation of rare-earth oxysulfides (RE2O2S) were calculated. Both the experimental results and the phase diagrams have demonstrated that the doped alkali metals are capable of promoting the formation of RE2O2S nanocrystals in the order of K approximate to Na>Li. With K acting as the doping alkali metal, the phase-formation capability for different RE2O2S (e.g., Eu, Gd, Yb, Lu) along the lanthanide series was also explored under the guidance of the hard and soft acid and base (HSAB) theory. Moreover, the as-developed synthetic route could be applied also to the production of K/Eu- and K/Tb-codoped La2O2S nanoplates, which displayed intense red and green emissions, respectively, under ultraviolet-light excitations.; Chemistry, Multidisciplinary; SCI(E); 5; ARTICLE; 6; 515-521; 78
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/313033]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhang, Tao,Gu, Jun,Ding, Yi,et al. Experimental and Theoretical Studies on the Controlled Synthesis of Alkali-Metal-Doped Rare-Earth Oxysulfide Nanocrystals[J]. chempluschem,2013.
APA	Zhang, Tao,Gu, Jun,Ding, Yi,Zhang, Ya-Wen,&Yan, Chun-Hua.(2013).Experimental and Theoretical Studies on the Controlled Synthesis of Alkali-Metal-Doped Rare-Earth Oxysulfide Nanocrystals.chempluschem.
MLA	Zhang, Tao,et al."Experimental and Theoretical Studies on the Controlled Synthesis of Alkali-Metal-Doped Rare-Earth Oxysulfide Nanocrystals".chempluschem (2013).