Aqueous solution synthesis of SnO nanostructures with tuned optical absorption behavior and photoelectrochemical properties through morphological evolution

Ken Sakaushi, Yuya Oaki, Hiroaki Uchiyama, Eiji Hosono, Haoshen Zhou, Hiroaki Imai

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

We have studied the aqueous solution synthesis of divalent tin oxide (SnO) nanostructures, changes in their optical absorption behavior, and their photoelectrochemical properties. A number of SnO nanostructures including sheets and wires, and their composite morphologies were obtained in aqueous solution containing urea at low temperatures. Parallel control of both oxidation state and morphology was achieved through the urea-mediated solution process. Nanoscale morphological variation facilitated changes in optical absorption behavior and the generation of a photocurrent. As for the nanostructured SnO, the absorption of visible light decreased and absorption in UV region increased. In contrast, bulk black SnO crystals showed strong absorption over the entire range of UV to visible light. A photocurrent was generated from the SnO nanostructures with irradiation of UV and visible light.

Original languageEnglish
Pages (from-to)2424-2430
Number of pages7
JournalNanoscale
Volume2
Issue number11
DOIs
Publication statusPublished - 2010 Nov

ASJC Scopus subject areas

  • Materials Science(all)

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