A mild L-cystine-assisted hydrothermal route to metastable gamma-MnS multipods

作者：Liu, Meiying^*; Shan, Nannan; Chen, Linlin; Li, Xiaoqian; Li, Bona; You, Wansheng

来源：Applied Surface Science, 2012, 258(20): 7922-7927.

DOI：10.1016/j.apsusc.2012.04.135

• gamma-MnS multipods
• L-Cystine
• Hydrothermal

A facile biomolecule-assisted hydrothermal route has been demonstrated to grow gamma-MnS multipods at 130 degrees C for 10 h in distilled water when L-cystine was used as both the sulfur source and complexing agent. The products were characterized by XRD, SEM, TEM and photoluminescence. The results indicate that the as-synthesized gamma-MnS multipods are composed of single-crystal, hexagonal and prism-like rods with a size of ca. 300-800 nm and a length of 2-4 mu m. The room-temperature photoluminescence spectrum exhibits a peak centered at 419 nm corresponding to the band edge emission when the sample was excited with a wavelength of 358 nm. A possible formation mechanism for the gamma-MnS multipods was also discussed based on the time-dependent experiments.

• 出版日期2012-8-1
• 单位辽宁师范大学