TiO2 nanoparticles obtained by laser ablation in water: Influence of pulse energy and duration on the crystalline phase
TiO2 nanoparticles obtained by laser ablation in water: Influence of pulse energy and duration on the crystalline phase
复制标题
DOI：
10.1016/j.jallcom.2014.11.117
复制
发表时间：
2015-09-15
影响因子：
6.2
通讯作者：
Giammanco, F.
中科院分区：
文献类型：
--
作者：
Giorgetti, E.;Miranda, M. Muniz;Giammanco, F.
我们通过在双去离子水中用ps或ns脉冲在1064 nm的激光波长下激光烧蚀Ti靶来制备Ti氧化物纳米颗粒。电子显微镜，拉曼，X-射线衍射和X-射线光电子能谱表明，虽然与ns脉冲的主要氧化物相是金红石，与ps脉冲的金红石是最丰富的形式在中间能量窗口为中心的约25毫焦耳每脉冲。该实验行为可以通过理论模型来描述，该理论模型计算烧蚀材料的压力和温度演变，并由此计算金红石和金红石产率。(C)2014爱思唯尔有限公司版权所有。
We fabricated Ti oxide nanoparticles by laser ablation of a Ti target in doubly deionized water with ps or ns pulses at a laser wavelength of 1064 nm. Electron microscopy, Raman, X-ray diffraction and X-ray photoelectron spectroscopy showed that, while with ns pulses the dominant oxide phase is rutile, with ps pulses anatase is the most abundant form in an intermediate energy window centered around 25 mJ per pulse. This experimental behavior can be described by a theoretical model which calculates the pressure and temperature evolution of the ablated material and, from this, the rutile and anatase yield. (C) 2014 Elsevier B.V. All rights reserved.