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Large-scale synthesis and growth mechanism of single-crystal Se nanobelts

Xie, Qin, Dai, Zhou, Huang, Wanwan, Zhang, Wu, Ma, Dekun, Hu, Xiaokai and Qian, Yitai 2006, Large-scale synthesis and growth mechanism of single-crystal Se nanobelts, Crystal growth & design, vol. 6, no. 6, pp. 1514-1517, doi: 10.1021/cg050493p.

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Title Large-scale synthesis and growth mechanism of single-crystal Se nanobelts
Author(s) Xie, Qin
Dai, Zhou
Huang, Wanwan
Zhang, Wu
Ma, Dekun
Hu, Xiaokai
Qian, Yitai
Journal name Crystal growth & design
Volume number 6
Issue number 6
Start page 1514
End page 1517
Total pages 4
Publisher American Chemical Society
Place of publication Washington, D. C.
Publication date 2006
ISSN 1528-7483
1528-7505
Summary Single-crystal trigonal (t) Se nanobelts have been synthesized on a large scale by reducing SeO2 with glucose at 160 °C. Electron microscopy images show that the nanobelts are 80 nm in diameter, 25 nm in thickness, and up to several hundreds of micrometers in length. HRTEM images prove that the nanobelts are single crystals and preferentially grow along the [001] direction. The time-dependent TEM images revealed that the formation and growth of t-Se nanobelts were governed by a solid−solution−solid growth mechanism. The redox reaction directly produced amorphous (α) Se nanoparticles under hydrothermal conditions. t-Se nanobelts were formed by dissolution and recrystallization of the initial α-Se nanoparticles under the functional capping of poly(vinylpyrrolidone) (PVP). The nanobelts obtained exhibit a quantum size effect in optical properties, showing a blue shift of the band gap and direct transitions relative to the values of bulk t-Se.
Language eng
DOI 10.1021/cg050493p
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30052752

Document type: Journal Article
Collection: Institute for Frontier Materials
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