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 journalArticlepeer-review

78 Scopus citations

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

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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