One-step synthesis of mesoporous PWA/SiO2 composite materials using triblock copolymer templates

Hui Suk Yun, Makoto Kuwabara, Hao Shen Zhou, Itaru Honma

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Materials in the form of highly dispersed 12-phosphotungstic acid (PWA) in mesoporous SiO2 framework (PWA/meso-SiO2) have been synthesized by one-step condensation method. The samples were characterized by XRD, TEM, EDX, FE-SEM, FT-IR, 31P MAS NMR and N2 adsorption. The mesostructure of the materials obtained can be maintained up to the PWA loading amount of 30 wt%. The specific surface area and the pore size of the PWA/meso-SiO2 are 600 m2 g-1 and 8.9 nm, respectively, for 30 wt% PWA loading. PWA clusters preserved their Keggin ion structure and exist in the SiO2 framework with partial interactions between PWA and SiO2.

Original languageEnglish
Pages (from-to)2341-2347
Number of pages7
JournalJournal of Materials Science
Volume39
Issue number7
DOIs
Publication statusPublished - 2004 Apr 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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