Design and synthesis of novel single-crystalline hierarchical CdS nanostructures generated by thermal evaporation processes

Zai Xing Yang, Wei Zhong*, Yu Deng, Chak Tong AU, You Wei Du

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

39 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2172-2176
Number of pages5
JournalCrystal Growth and Design
Volume11
Issue number6
DOIs
Publication statusPublished - 1 Jun 2011

Scopus Subject Areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Design and synthesis of novel single-crystalline hierarchical CdS nanostructures generated by thermal evaporation processes'. Together they form a unique fingerprint.

Cite this