Bismuth oxychloride nanowires for photocatalytic decomposition of organic dyes

Xiangbiao LIAO, Xin LAN, Nan NI, Pengfei YANG, Yuan YANG*, Xi CHEN*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

20 Citations (Scopus)

Abstract

Engineering nanostructures for semiconductor materials is recognized as an important strategy for achieving excellent photocatalytic activity. Although multiple nanostructures of bismuth oxychloride (BiOCl) were reported, their synthesis procedures were still complicated and thus limited scalable and practical photocatalytic decomposition. Here, we propose a highly efficient route to achieve BiOCl nanowires through simply stirring the precursor of Bi2O3 powder in the saturated NaCl solution at room temperature. The concentration of NaCl plays a crucial role in growing BiOCl nanowires under the mechanism of oriented attachment, uncovered by continuous observations of product morphologies at different reaction stages. Compared to conventional BiOCl powder, BiOCl nanowires exhibited favorable energy band structures with narrow band gaps, which are predominated by the unique structure with a high aspect ratio and exposed active {001} facets. A superior visible-light photocatalytic activity for degrading Rhodamine B dye was found in the case of the prepared BiOCl, which is faster than that for BiOCl nanoparticles and TiO2. © 2021 American Chemical Society.
Original languageEnglish
Pages (from-to)3887-3892
Number of pages5
JournalACS Applied Nano Materials
Volume4
Issue number4
DOIs
Publication statusPublished - 2021
Externally publishedYes

Bibliographical note

The work of X.B.L. and X.C. was supported by Earth Engineering Center and Center for Advanced Materials for Energy and Environment. The Xe lamp and UV–vis spectrometer are offered by Prof. Daniel Esposito’s research group from Columbia Engineering.

Keywords

  • bismuth oxide
  • bismuth oxychloride
  • crystal growth
  • nanowire
  • photocatalytic degradation

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