Controlled Construction of Monodisperse La2(MoO4)3:Yb,Tm Microarchitectures with Upconversion Luminescent Property
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- 作者：Zhenxing Chen ; Wenbo Bu ; Na Zhang ; Jianlin Shi
- 刊名：Journal of Physical Chemistry C
- 出版年：2008
- 出版时间：March 20, 2008
- 年：2008
- 卷：112
- 期：11
- 页码：4378 - 4383
- 全文大小：1024K
- 年卷期：v.112,no.11(March 20, 2008)
- ISSN：1932-7455
文摘
Monodisperse La2(MoO4)3:Yb,Tm microarchitectures with uniform waxberry-like morphology have beensuccessfully constructed in large scale by a facile surfactant-assisted hydrothermal route, in which sodiumlauryl sulfate (SLS) was used as the structure directing agent. It was found that the pH value was a crucialfactor controlling the phase composition and purity, which was unaffected by surfactant SLS. The growthprocess of these waxberry-shaped microarchitectures has been examined in detail, and it was proved that aspecial dissolution-recrystallization transformation mechanism as well as a preferential adsorption of SLSprocess was responsible for the morphology evolution of the La2(MoO4)3:Yb,Tm microarchitectures. Amechanism for the formation of the waxberry-shape La2(MoO4)3:Yb,Tm microarchitectures was put forward.The specially shaped architectures showed blue up-conversion emission properties.