Facile fabrication of Cu2O nanobelts in ethanol on nanoporous Cu and their photodegradation of methyl orange

Zhenhua Dan, Yulin Yang, Fengxiang Qin, Hao Wang, Hui Chang

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Thin cupric oxide (Cu2O) nanobelts with width of few tens of nanometers to few hundreds of nanometers were fabricated in anhydrous ethanol on nanoporous copper templates that was prepared via dealloying amorphous Ti40Cu60 ribbons in hydrofluoric acid solutions at 348 K. The Cu2O octahedral particles preferentially form in the water, and nanobelts readily undergo the growth along the lengthwise and widthwise in the anhydrous ethanol. The ethanol molecules serve as stabilizing or capping reagents, and play a key role of the formation of two-dimensional Cu2O nanobelts. Cu atoms at weak sites (i.e., twin boundary) on the nanoporous Cu ligaments are ionized to form Cu2+ cations, and then react with OH- to form Cu2O and H2O. The two-dimensional growth of Cu2O nanostructure is preferred in anhydrous ethanol due to the suppression of random growth of Cu2O nanoarchitectures by ethanol. Cu2O nanobelts have superior photodegradation performance of methyl orange, three times higher than nanoporous Cu.

Original languageEnglish
Article number446
JournalMaterials
Volume11
Issue number3
DOIs
Publication statusPublished - 2018 Mar 19

Keywords

  • Azo dye degradation
  • CuO nanobelts
  • Ethanol
  • Photocatalysts
  • Porous materials

ASJC Scopus subject areas

  • Materials Science(all)

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