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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39913026" target="_blank" >RIV/00216275:25310/18:39913026 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26620/18:PU129139

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0021951718302392?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0021951718302392?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcat.2018.06.017" target="_blank" >10.1016/j.jcat.2018.06.017</a>

Result language

angličtina

Original language name

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

Original language description

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. (C) 2018 Elsevier Inc. All rights reserved.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Catalysis

ISSN

0021-9517

e-ISSN

1090-2694

Volume of the periodical

365

Issue of the periodical within the volume

September

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

86-93

UT code for WoS article

000442976400011

EID of the result in the Scopus database

2-s2.0-85049335477