Detail publikace

Anodic TiO2 nanotubes decorated by Pt nanoparticles using ALD: An efficient electrocatalyst for methanol oxidation

ANITHA, V. ZAZPE MENDIOROZ, R. KRBAL, M. YOO, J. SOPHA, H. PŘIKRYL, J. CHA, G. ŠLANG, S. SCHMUKI, P. MACÁK, J.

Originální název

Anodic TiO2 nanotubes decorated by Pt nanoparticles using ALD: An efficient electrocatalyst for methanol oxidation

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Anodic TiO2 nanotube layers (TNTs) of different thicknesses (approximate to 1, 5 and 20 mu m) were homogeneously decorated with Pt nanoparticles using atomic layer deposition (ALD) and explored for the electrocatalytic activity in methanol oxidation reaction (MOR). Six different numbers of ALD cycles (N-ALD) - 24, 40, 56, 72, 88 and 104 - were used. Pt nanoparticles with diameter in the range of 1.3-4.6 nm were obtained for the first five N-ALD) and a complete coating was achieved for the highest N-ALD) (1 04). The SEM/TEM analyses revealed that Pt nanoparticles uniformly decorated exteriors and interiors of TNTs. A linear increase of the particle diameter of Pt was observed with increasing N-ALD). Highest electrocatalytic activities of Pt/TNTs electrodes represented by current density of 74 mA/cm(2) were obtained for N-ALD) = 88 and for thickest TNTs (20 mu m). The electrooxidation performance of Pt-decorated TiO2 nanotube layers was thoroughly compared to reference substrates: Pt-decorated graphite sheets and TiO2 flat layers (on annealed Ti foils) as well as for a commercial Pt/C catalyst attached on graphite sheets. From chronoamperometric measurements it turned out that the catalytic activity of Pt-loaded nanotube layers is superior and long lasting compared to other substrates, where significant degree of catalyst poisoning takes place. The presented ALD decoration approach is an effective strategy for the homogeneous distribution of precious Pt nanoparticles on a high surface area catalyst support for high-performance electrocatalysis

Klíčová slova

TiO2 nanotubes Pt nanoparticles Atomic layer deposition Electrocatalysis Methanol electrooxidation

Autoři

ANITHA, V.; ZAZPE MENDIOROZ, R.; KRBAL, M.; YOO, J.; SOPHA, H.; PŘIKRYL, J.; CHA, G.; ŠLANG, S.; SCHMUKI, P.; MACÁK, J.

Vydáno

1. 9. 2018

ISSN

0021-9517

Periodikum

JOURNAL OF CATALYSIS

Ročník

365

Číslo

1

Stát

Spojené státy americké

Strany od

86

Strany do

93

Strany počet

8

URL

https://www-sciencedirect-com.ezproxy.lib.vutbr.cz/science/article/pii/S0021951718302392

BibTex

@article{BUT150250,
  author="V.C. {Anitha} and Raúl {Zazpe Mendioroz} and Miloš {Krbal} and JeongEun {Yoo} and Hanna Ingrid {Sopha} and Jan {Přikryl} and Gihoon {Cha} and Stanislav {Šlang} and Patrik {Schmuki} and Jan {Macák}",
  title="Anodic TiO2 nanotubes decorated by Pt nanoparticles using ALD: An efficient electrocatalyst for methanol oxidation",
  journal="JOURNAL OF CATALYSIS",
  year="2018",
  volume="365",
  number="1",
  pages="86--93",
  doi="10.1016/j.jcat.2018.06.017",
  issn="0021-9517",
  url="https://www-sciencedirect-com.ezproxy.lib.vutbr.cz/science/article/pii/S0021951718302392"
}