Volume 11 Issue 5
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Zeng, K., Chen, S., Song, Y., Li, H., Li, F., & Liu, P. (2013). Solvothermal synthesis of trigonal selenium with butterfly-like microstructure. Particuology, 11(5), 614–617. https://doi.org/10.1016/j.partic.2012.06.007

Solvothermal synthesis of trigonal selenium with butterfly-like microstructure

Kai Zeng, Shuguang Chen *, Yande Song, Haibin Li, Fujin Li, Peng Liu
School of Physics and Electronic Science, Changsha University of Science & Technology, Changsha 410114, China
10.1016/j.partic.2012.06.007
Volume 11, Issue 5, October 2013, Pages 614-617
Received 12 April 2012, Revised 21 May 2012, Accepted 12 June 2012, Available online 30 October 2012.
E-mail: csustcsg@yahoo.com

Highlights

► Trigonal Se with butterfly-like microstructure is obtained via solvothermal route. 

► Acetone plays a key role in coalescence of colloidal Se particles. 

► Growth of the opposite lateral sides of t-Se rod results in the microstructure.

Abstract

We present a facile synthesis of trigonal selenium with butterfly-like microstructure from elemental selenium via a solvothermal and aging route. By using X-ray diffraction and scanning electron microscopy to characterize the products, a possible growth mechanism is proposed. The solvothermal process promotes the dissolution of selenium in ethylenediamine to form a brown homogeneous [Se(en)x] solution. By introducing acetone into this [Se(en)x] solution, amorphous selenium nanoparticles were produced which then transformed into trigonal selenium, which further assembled along the c-axis to form hexagonal rods. Owing to stereo hindrance as well as to development of opposite lateral sides of the hexagonal rod in opposing directions, a butterfly-like microstructure consisting of two long outside rods and a short inner rod was obtained.

Graphical abstract
Keywords
Selenium; Solution-phase; Butterfly-like; Crystal growth; Microstructure