A facile exfoliation-crystal growth route to multicomponent Ag 2 CO 3 /Ag-Ti 5 NbO 14 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

15 Citations (Scopus)

Abstract

Multicomponent Ag 2 CO 3 /Ag-layered Ti 5 NbO 14 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 Ag 2 CO 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 Ag 2 CO 3 /Ag and Ti 5 NbO 14 nanosheets leads to a remarkable enhancement of visible light absorption and a significant depression of electron-hole recombination. The present Ag 2 CO 3 /Ag-layered Ti 5 NbO 14 nanohybrids show much higher visible light photocatalytic activity than the unhybridized Ag 2 CO 3 , 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 2 CO 3 /Ag-layered Ti 5 NbO 14 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

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Carbon Monoxide
Crystallization
Nanosheets
Silver
Metals
Electrons
Photocatalysts
Oxides
Light absorption
Cations
Crystal structure
Nanoparticles
Crystals

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

Cite this

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abstract = "Multicomponent Ag 2 CO 3 /Ag-layered Ti 5 NbO 14 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 Ag 2 CO 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 Ag 2 CO 3 /Ag and Ti 5 NbO 14 nanosheets leads to a remarkable enhancement of visible light absorption and a significant depression of electron-hole recombination. The present Ag 2 CO 3 /Ag-layered Ti 5 NbO 14 nanohybrids show much higher visible light photocatalytic activity than the unhybridized Ag 2 CO 3 , 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 2 CO 3 /Ag-layered Ti 5 NbO 14 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",
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A facile exfoliation-crystal growth route to multicomponent Ag 2 CO 3 /Ag-Ti 5 NbO 14 nanohybrids with improved visible light photocatalytic activity . / Park, Suhye; Lee, Jang Mee; Jo, Yun Kyung; Kim, In Young; Hwang, Seong Ju.

In: Dalton Transactions, Vol. 43, No. 27, 21.07.2014, p. 10566-10573.

Research output: Contribution to journalArticle

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T1 - A facile exfoliation-crystal growth route to multicomponent Ag 2 CO 3 /Ag-Ti 5 NbO 14 nanohybrids with improved visible light photocatalytic activity

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AU - Kim, In Young

AU - Hwang, Seong Ju

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AB - Multicomponent Ag 2 CO 3 /Ag-layered Ti 5 NbO 14 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 Ag 2 CO 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 Ag 2 CO 3 /Ag and Ti 5 NbO 14 nanosheets leads to a remarkable enhancement of visible light absorption and a significant depression of electron-hole recombination. The present Ag 2 CO 3 /Ag-layered Ti 5 NbO 14 nanohybrids show much higher visible light photocatalytic activity than the unhybridized Ag 2 CO 3 , 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 2 CO 3 /Ag-layered Ti 5 NbO 14 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

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