声化学辅助微波合成及单晶硫化镉纳米花的光学研究

Sonochemistry-assisted microwave synthesis and optical study of single-crystalline CdS nanoflowers.

作者信息

Tai Guoan, Guo Wanlin

机构信息

Institute of Nanoscience, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, PR China.

出版信息

Ultrason Sonochem. 2008 Apr;15(4):350-356. doi: 10.1016/j.ultsonch.2007.08.008.

DOI:10.1016/j.ultsonch.2007.08.008

PMID:18441538

Abstract

Well-defined flower-like CdS nanostructures have been synthesized by applying ultrasound and microwave simultaneously, which consist of hexagonal nanopyramids and/or nanoplates depending on different sulfur sources. It is shown that the synergistic effect of microwave and sonochemistry is the main mechanism for the formation of the nanoflowers. Optical characterization of the nanoflowers shows a large blue-shift up to 100 nm in comparing with simple low-dimensional CdS nanostructures. This structure induced shift in optical properties may have potential applications in optoelectronics devices, catalysis, and solar cells.

摘要

通过同时施加超声和微波合成了轮廓清晰的花状硫化镉纳米结构，根据不同的硫源，这些结构由六边形纳米金字塔和/或纳米板组成。结果表明，微波和声化学的协同效应是形成纳米花的主要机制。纳米花的光学表征显示，与简单的低维硫化镉纳米结构相比，有高达100纳米的大蓝移。这种结构引起的光学性质变化可能在光电器件、催化和太阳能电池方面有潜在应用。