Hierarchically plasmonic Z-scheme photocatalyst of Ag/AgCl nanocrystals decorated mesoporous single-crystalline metastable Bi20TiO 32 nanosheets

Jungang Hou, Zheng Wang, Chao Yang, Weilin Zhou, Shuqiang Jiao, Hongmin Zhu

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

The hierarchical photocatalysts of Ag-AgCl@Bi20TiO32 composites have been successfully synthesized by anchoring Ag-AgCl nanocrystals on the surfaces of mesoporous single-crystalline metastable Bi 20TiO32 nanosheets via a two-stage strategy for excellent visible-light-driven photocatalytic activities in the Z-scheme system. First, the single-crystalline metastable Bi20TiO32 nanosheets with tetragonal structures were prepared via a facile hydrothermal process in assistance with the post-heat-treatment route using benzyl alcohol. Especially, the mesoporous Bi20TiO32 nanosheets showed high photocatalytic activity for the degradation of rhodamine B dye under visible-light irradiation. Then, the as-prepared mesoporous Bi 20TiO32 nanosheets were used as a support for loading Ag-AgCl nanocrystals using the deposition-precipitation method and irradiation-reduction process to fabricate the Ag-AgCl@Bi20TiO 32 composites. Inspiringly, the hierarchical Ag-AgCl@Bi 20TiO32 photocatalyst has the higher photocatalytic performance than Ag-AgCl nanocrystals and mesoporous Bi20TiO 32 nanosheets over the degradation of rhodamine B and acid orange 7 dyes, which is attributed to the effective charge transfer from plasmon-excited Ag nanocrystal to Bi20TiO32 for the construction of a Z-scheme visible-light photocatalyst. This work could provide new insights into the fabrication of hierarchically plasmonic photocatalysts with high performance and facilitate their practical application in environmental issues.

Original languageEnglish
Pages (from-to)5132-5141
Number of pages10
JournalJournal of Physical Chemistry C
Volume117
Issue number10
DOIs
Publication statusPublished - 2013 Mar 14
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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