Architecture controlled synthesis of flower-like In2O 3 nanobundles with significantly enhanced ultraviolet scattering and ethanol sensing

Hsiang Yu Lai, Tsung Han Chen, Chun-Hua Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


We have successfully synthesized novel needle-like and flower-like In 2O3 nanobundles (NBs) composed of numerous parallel assembled nanoparticle chains via hydrolysis of InCl3 with NaBH 4 in aqueous solution and subsequent heat treatment. These previously unknown nanostructures exhibit unusual optical and ethanol sensing properties. T-matrix simulation evidently explains the assembling effect on the significant scattering of UV-visible spectra including a characteristic peak in the UV region as well as the broadened edge toward the visible region for these two NBs. The greatly enhanced ethanol-sensing properties observed for the flower-like In2O3 NBs indicate that the dominant factors for sensing are not only the nanoparticle size but also the structural dimension and architecture of the nanoassembly.

Original languageEnglish
Pages (from-to)5589-5595
Number of pages7
Issue number17
StatePublished - 7 Sep 2012

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