Deposition of Pt, Pd, Ru and Au on the surfaces of titanate nanotubes

Dmitry V Bavykin, Alexei A Lapkin, Pawel K Plucinski, Laura Torrente Murciano, Jens M Friedrich, Frank C Walsh

Research output: Contribution to journalArticle

Abstract

Nanoparticles of different metals (Pt, Pd, Au) or a metal hydroxide (Ru) have been immobilized on the surface of mesoporous titanate nanotubes produced by alkali hydrothermal treatment of TiO2, and have been characterized by HRTEM. Two different approaches have been utilised for the deposition of metal particles into the internal pores of titanate nanotubes: (i) deposition from solution confined inside the nanotubes and (ii) blocking the external surface of the nanotubes. A third method, ion-exchange of protons onto metal cations in titanate nanotubes followed by reduction or alkali treatment (in the case of Ru hydroxide), has been used for deposition of metal nano-particles on both the internal and external surfaces of the nanotubes. Nanoparticles of metal or metal hydroxide deposited by the ion-exchange method are characterised by an average size in the range of 1.2–5 nm, and deposits are uniformly distributed on the surface, resulting in a very high loading density. An increase in the amount of deposited metal resulted predominantly in a higher nanoparticle loading density, without growth in the particle size. This was correlated with the retention of high specific catalytic activity of ruthenium hydrated oxide deposited on titanate nanotubes in the reaction of selective oxidation of benzyl alcohol over a wide range (0.6–8.7 wt%) of ruthenium loading. The methods for metallization of titanate nanotubes are critically discussed.
Original languageEnglish
Pages (from-to)151-160
Number of pages10
JournalTopics in Catalysis
Volume39
Issue number3-4
DOIs
Publication statusPublished - 2006

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Nanotubes
Metals
Ruthenium
Alkalies
Nanoparticles
Ion exchange
Benzyl Alcohol
Metallizing
Oxides
Cations
Protons
Catalyst activity
Alcohols
Deposits
Positive ions
Particle size
Oxidation
hydroxide ion

Cite this

Bavykin, D. V., Lapkin, A. A., Plucinski, P. K., Torrente Murciano, L., Friedrich, J. M., & Walsh, F. C. (2006). Deposition of Pt, Pd, Ru and Au on the surfaces of titanate nanotubes. Topics in Catalysis, 39(3-4), 151-160. https://doi.org/10.1007/s11244-006-0051-4

Deposition of Pt, Pd, Ru and Au on the surfaces of titanate nanotubes. / Bavykin, Dmitry V; Lapkin, Alexei A; Plucinski, Pawel K; Torrente Murciano, Laura; Friedrich, Jens M; Walsh, Frank C.

In: Topics in Catalysis, Vol. 39, No. 3-4, 2006, p. 151-160.

Research output: Contribution to journalArticle

Bavykin, DV, Lapkin, AA, Plucinski, PK, Torrente Murciano, L, Friedrich, JM & Walsh, FC 2006, 'Deposition of Pt, Pd, Ru and Au on the surfaces of titanate nanotubes', Topics in Catalysis, vol. 39, no. 3-4, pp. 151-160. https://doi.org/10.1007/s11244-006-0051-4
Bavykin, Dmitry V ; Lapkin, Alexei A ; Plucinski, Pawel K ; Torrente Murciano, Laura ; Friedrich, Jens M ; Walsh, Frank C. / Deposition of Pt, Pd, Ru and Au on the surfaces of titanate nanotubes. In: Topics in Catalysis. 2006 ; Vol. 39, No. 3-4. pp. 151-160.
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