Department of Chemistry
Design and synthesis of novel single-crystalline hierarchical cds nanostructures generated by thermal evaporation processes
Through thermal evaporation of a mixture of CdS and graphite powder, we produced a novel hierarchical nanostructure of single-crystalline CdS. It is in the form of cuspidated double headed nanocomb. In the absence of graphite powder, the thermal evaporation of powder CdS alone would result in the formation of CdS nanobelts. The hexagonal wurtzite phase of the CdS nanostructures was verified by XRD, and the single crystallinity confirmed by SAED. As revealed in FESEM and TEM analysis, the obtained hierarchical CdS nanocomb has 2-fold symmetry and the teeth grown perpendicular to the comb trunk are nanospikes of much smaller size. A mechanism for the growth of the hierarchical CdS nanocombs and CdS nanobelts has been described. In the study of optical properties of the CdS nanomaterials, we observed that the photoluminescence peak of CdS nanocombs showed a red-shift of ∼7 nm in comparison to that of CdS nanobelts. © 2011 American Chemical Society.
Source Publication Title
Crystal Growth and Design
American Chemical Society
Yang, Zai-Xing, Wei Zhong, Yu Deng, Chak-Tong Au, and You-Wei Du. "Design and synthesis of novel single-crystalline hierarchical cds nanostructures generated by thermal evaporation processes." Crystal Growth and Design 11.6 (2011): 2172-2176.