Ultralow-Density, Transparent, Superamphiphobic boehmite nanofiber aerogels and their alumina derivatives

Gen Hayase, Kazuya Nonomura, George Hasegawa, Kazuyoshi Kanamori, Kazuki Nakanishi

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Ultralow-density aerogels that have high visible-light transparency were obtained via a simple process. To achieve such materials, aqueous dispersion of boehmite nanofibers (BNF) was used. Hexamethylenetetramine (HMT) was used, which homogeneously raises pH by hydrolysis into ammonia in a mild condition. All the results suggest that the BNF aerogels are formed not by chemical bonds in-between nanofibers or assembling with a morphological change through, for instance, dissolution-reprecipitation of nanofibers, but by physical attractive interactions, which can be strong enough to support the ultralow-density structure. Due to the needle-like structure on the surface, the FAS-treated BNF aerogels exhibit superamphiphobicity, which is essential for antifouling applications.

Original languageEnglish
Pages (from-to)3-5
Number of pages3
JournalChemistry of Materials
Volume27
Issue number1
DOIs
Publication statusPublished - Jan 1 2015

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Aerogels
Aluminum Oxide
Nanofibers
Alumina
Derivatives
Methenamine
Chemical bonds
Ammonia
Needles
Transparency
Hydrolysis
Dissolution
aluminum oxide hydroxide

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Ultralow-Density, Transparent, Superamphiphobic boehmite nanofiber aerogels and their alumina derivatives. / Hayase, Gen; Nonomura, Kazuya; Hasegawa, George; Kanamori, Kazuyoshi; Nakanishi, Kazuki.

In: Chemistry of Materials, Vol. 27, No. 1, 01.01.2015, p. 3-5.

Research output: Contribution to journalArticle

Hayase, Gen ; Nonomura, Kazuya ; Hasegawa, George ; Kanamori, Kazuyoshi ; Nakanishi, Kazuki. / Ultralow-Density, Transparent, Superamphiphobic boehmite nanofiber aerogels and their alumina derivatives. In: Chemistry of Materials. 2015 ; Vol. 27, No. 1. pp. 3-5.
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