Hollow ZSM-5 with Silicon-Rich Surface, Double Shells, and Functionalized Interior with Metallic Nanoparticles and Carbon Nanotubes

Chengyi Dai, Anfeng Zhang, Min Liu, Xinwen Guo, Chunshan Song

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Hollow ZSM-5 single crystals with silicon-rich exterior surface are prepared by a "dissolution-recrystallization" strategy in tetrapropylammonium hydroxide solution. Selective dissolution and exterior recrystallization cause the silicon components to migrate from the inside to outside, resulting in a regular void in the interior of the crystal, increased Brönsted acid sites and a silicon-rich external surface. The as-prepared hollow ZSM-5 exhibits excellent acid catalysis with enhanced shape selectivity, as shown in biphenyl methylation as a probe reaction, which is attributed to the silicon-rich external surface and thus the inhibition of isomerization on external surface. More interestingly, hollow ZSM-5 single crystals with double shells are successfully prepared by layer-by-layer technique followed with dissolution-recrystallization strategy. Furthermore, hollow ZSM-5 encapsulating iron and carbon nanotubes are successfully synthesized.

Original languageEnglish (US)
Pages (from-to)7479-7487
Number of pages9
JournalAdvanced Functional Materials
Volume25
Issue number48
DOIs
StatePublished - Dec 22 2015

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Carbon Nanotubes
Silicon
hollow
Carbon nanotubes
nanotubes
carbon nanotubes
Nanoparticles
nanoparticles
dissolving
Dissolution
Crystallization
silicon
Single crystals
acids
Acids
encapsulating
methylation
Methylation
Catalyst selectivity
single crystals

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Condensed Matter Physics
  • Electrochemistry

Cite this

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Hollow ZSM-5 with Silicon-Rich Surface, Double Shells, and Functionalized Interior with Metallic Nanoparticles and Carbon Nanotubes. / Dai, Chengyi; Zhang, Anfeng; Liu, Min; Guo, Xinwen; Song, Chunshan.

In: Advanced Functional Materials, Vol. 25, No. 48, 22.12.2015, p. 7479-7487.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Hollow ZSM-5 with Silicon-Rich Surface, Double Shells, and Functionalized Interior with Metallic Nanoparticles and Carbon Nanotubes

AU - Dai, Chengyi

AU - Zhang, Anfeng

AU - Liu, Min

AU - Guo, Xinwen

AU - Song, Chunshan

PY - 2015/12/22

Y1 - 2015/12/22

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AB - Hollow ZSM-5 single crystals with silicon-rich exterior surface are prepared by a "dissolution-recrystallization" strategy in tetrapropylammonium hydroxide solution. Selective dissolution and exterior recrystallization cause the silicon components to migrate from the inside to outside, resulting in a regular void in the interior of the crystal, increased Brönsted acid sites and a silicon-rich external surface. The as-prepared hollow ZSM-5 exhibits excellent acid catalysis with enhanced shape selectivity, as shown in biphenyl methylation as a probe reaction, which is attributed to the silicon-rich external surface and thus the inhibition of isomerization on external surface. More interestingly, hollow ZSM-5 single crystals with double shells are successfully prepared by layer-by-layer technique followed with dissolution-recrystallization strategy. Furthermore, hollow ZSM-5 encapsulating iron and carbon nanotubes are successfully synthesized.

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