Fine tuning the surface acidity of titanate nanostructures

D. Madarász, I. Szenti, L. Nagymajtényi, A. Sápi, Á. Kukovecz, Z. Kónya

Research output: Article

2 Citations (Scopus)

Abstract

The effect of protonation on the surface acidic properties of titanate nanowires (TiONWs) was investigated. Nanowires were synthesized by the alkali hydrothermal method which resulted in one dimensional nanostructures of large external surface area and well-defined lamellar interlayer structure. The Na+/H+ ratio in the structure can be tuned by ion-exchange. Our aim was to characterize the morphology of the as-synthesized nanostructures by HRTEM and SEM measurements and assess their surface acidity using in situ infrared spectroscopic measurements and temperature programmed desorption. It was found that the numbers of Lewis and Brönsted acidic sites in the Na-form and the H-form of the TiONWs is different. The ratio and the nature of acidic sites can be tuned by the ion exchange process. The wire-like morphology and the tunable acidity are features of titanate nanowires that may render them a promising material in various heterogeneous catalytic applications.

Original languageEnglish
Pages (from-to)695-700
Number of pages6
JournalAdsorption
Volume19
Issue number2-4
DOIs
Publication statusPublished - 2013

Fingerprint

Acidity
acidity
Nanowires
Nanostructures
nanowires
Tuning
tuning
Ion exchange
Lamellar structures
Protonation
Alkalies
Temperature programmed desorption
surface properties
Surface properties
interlayers
alkalies
ions
desorption
wire
Wire

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Surfaces and Interfaces
  • Chemistry(all)

Cite this

Fine tuning the surface acidity of titanate nanostructures. / Madarász, D.; Szenti, I.; Nagymajtényi, L.; Sápi, A.; Kukovecz, Á.; Kónya, Z.

In: Adsorption, Vol. 19, No. 2-4, 2013, p. 695-700.

Research output: Article

Madarász, D. ; Szenti, I. ; Nagymajtényi, L. ; Sápi, A. ; Kukovecz, Á. ; Kónya, Z. / Fine tuning the surface acidity of titanate nanostructures. In: Adsorption. 2013 ; Vol. 19, No. 2-4. pp. 695-700.
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AU - Kónya, Z.

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