多泡声致发光条件下 CdSe 和 CdSe/TiO2 纳米粒子的合成。
Synthesis of CdSe and CdSe/TiO2 nanoparticles under multibubble sonoluminescence condition.
机构信息
Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Center for Environment and Health Engineering, Henan University, Henan Kaifeng 475004, China.
出版信息
Ultrason Sonochem. 2012 May;19(3):464-8. doi: 10.1016/j.ultsonch.2011.09.004. Epub 2011 Sep 21.
CdSe and CdSe/TiO(2) nanoparticles were synthesized under multibubble sonoluminescence (MBSL) condition. The influences of TiO(2) introduced as the sensitizer on the morphology and crystal transformation were investigated. The morphology, phase and optical properties of the final products have been characterized by X-ray powder diffraction, transmission electron microscope, UV-vis absorption spectroscopy and photoluminescence spectroscopy. The results showed that as-prepared nanoparticles are well-crystallized, and the suppression of crystal pattern transition as well as the control of CdSe crystal growth can be implemented by coupling of TiO(2) semiconductor. Furthermore, the possible growth mechanism for different morphologies and crystal phases of the nanocrystals were also discussed.
CdSe 和 CdSe/TiO(2) 纳米粒子在多泡声致发光（MBSL）条件下合成。研究了 TiO(2) 作为敏化剂引入对形态和晶体转变的影响。通过 X 射线粉末衍射、透射电子显微镜、紫外可见吸收光谱和光致发光光谱对最终产物的形貌、相和光学性质进行了表征。结果表明，所制备的纳米粒子结晶良好，通过 TiO(2) 半导体的耦合可以抑制晶体形态转变并控制 CdSe 晶体生长。此外，还讨论了不同形貌和晶相纳米晶体的可能生长机制。
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