A facile exfoliation-crystal growth route to multicomponent Ag 2CO3/Ag-Ti5NbO14 nanohybrids with improved visible light photocatalytic activity

Suhye Park, Jang Mee Lee, Yun Kyung Jo, In Young Kim, Seong Ju Hwang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Multicomponent Ag2CO3/Ag-layered Ti 5NbO14 nanohybrids are synthesized by the crystal growth of silver carbonate on the surface of exfoliated layered titanoniobate 2D nanosheets. In the obtained nanohybrids, the spherical Ag2CO 3 nanoparticles with a size of 5-10 nm are immobilized on the surface of the titanoniobate nanosheets with partial formation of neutral Ag metal caused by electron transfer from anionic titanoniobate nanosheets to silver cations. An electronic coupling between Ag2CO3/Ag and Ti5NbO14 nanosheets leads to a remarkable enhancement of visible light absorption and a significant depression of electron-hole recombination. The present Ag2CO3/Ag-layered Ti 5NbO14 nanohybrids show much higher visible light photocatalytic activity than the unhybridized Ag2CO3, underscoring the beneficial effect of hybridization with metal oxide nanosheets on the photocatalytic activity of silver oxosalts. Before and after the photoreaction, the crystal structure and crystal morphology of the Ag 2CO3/Ag-layered Ti5NbO14 nanohybrids remain unchanged, highlighting the excellent photostability of these materials. All the present experimental findings clearly demonstrate the usefulness of the exfoliation-crystal growth method in exploring novel efficient visible light active photocatalysts. This journal is

Original languageEnglish
Pages (from-to)10566-10573
Number of pages8
JournalDalton Transactions
Volume43
Issue number27
DOIs
Publication statusPublished - 2014 Jul 21

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

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