1. Thermal decomposition synthesis of nanorods bismuth sulphide from bismuth N-ethyl cyclohexyl dithiocarbamate complex.
- Author
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Abdullah, Nurul Hidayah, Zainal, Zulkarnain, Silong, Sidik, Tahir, Mohamed Ibrahim Mohamed, Tan, Kar-Ban, and Chang, Sook-Keng
- Subjects
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NANOROD synthesis , *CHEMICAL decomposition , *CALCINATION (Heat treatment) , *CARBAMATE derivatives , *BISMUTH compounds - Abstract
Nanorods of bismuth sulphide were prepared by thermal decomposition of bismuth N-ethyl cyclohexyl dithiocarbamate at different calcination duration. X-ray diffraction (XRD) analysis shows that at 400 °C, the precursor was fully decomposed to orthorhombic bismuth sulphide after 2 h of calcination. Besides, calcination duration does not affect the existence of Bi 2 S 3 phase. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analyses reveal that Bi 2 S 3 nanorods with an average width ranging from 29–36 nm were obtained. Energy dispersive X-ray (EDX) analysis confirmed the atomic ratio of Bi and S close to 2:3, giving a possible composition of Bi 2 S 3 . Direct band gap energy of Bi 2 S 3 decreases from 1.83 eV to 1.54 eV as calcination time increases. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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