Publication detail

Electrochemical top-down synthesis of C-supported Pt nano-particles with controllable shape and size: Mechanistic insights and application

Garlyyev, B. Watzele, S. Fichtner, J. Michalicka, J. Schokel, A. Senyshyn, A. Perego, A. Pan, DJ. El-Sayed, HA. Macak, JM. Atanassov, P. Zenyuk, IV. Bandarenka, AS.

Original Title

Electrochemical top-down synthesis of C-supported Pt nano-particles with controllable shape and size: Mechanistic insights and application

Type

journal article in Web of Science

Language

English

Original Abstract

In this work, we demonstrate the power of a simple top-down electrochemical erosion approach to obtain Pt nanoparticle with controlled shapes and sizes (in the range from similar to 2 to similar to 10 nm). Carbon supported nanoparticles with narrow size distributions have been synthesized by applying an alternating voltage to macroscopic bulk platinum structures, such as disks or wires. Without using any surfactants, the size and shape of the particles can be changed by adjusting simple parameters such as the applied potential, frequency and electrolyte composition. For instance, application of a sinusoidal AC voltage with lower frequencies results in cubic nanoparticles; whereas higher frequencies lead to predominantly spherical nanoparticles. On the other hand, the amplitude of the sinusoidal signal was found to affect the particle size; the lower the amplitude of the applied AC signal, the smaller the resulting particle size. Pt/C catalysts prepared by this approach showed 0.76 A/mg mass activity towards the oxygen reduction reaction which is similar to 2 times higher than the state-of-the-art commercial Pt/C catalyst (0.42 A/mg) from Tanaka. In addition to this, we discussed the mechanistic insights about the nanoparticle formation pathways.

Keywords

electrochemical synthesis; platinum; nanoparticles; oxygen reduction reaction

Authors

Garlyyev, B.; Watzele, S. ; Fichtner, J.; Michalicka, J.; Schokel, A.; Senyshyn, A.; Perego, A.; Pan, DJ.; El-Sayed, HA.; Macak, JM.; Atanassov, P.; Zenyuk, IV.; Bandarenka, AS.

Released

1. 8. 2021

Publisher

TSINGHUA UNIV PRESS

Location

BEIJING

ISBN

1998-0000

Periodical

Nano Research

Year of study

14

Number

8

State

People's Republic of China

Pages from

1

Pages to

8

Pages count

8

URL

https://link.springer.com/article/10.1007%2Fs12274-020-3281-z

BibTex

@article{BUT171420,
  author="Garlyyev, B. and Watzele, S. and Fichtner, J. and Michalicka, J. and Schokel, A. and Senyshyn, A. and Perego, A. and Pan, DJ. and El-Sayed, HA. and Macak, JM. and Atanassov, P. and Zenyuk, IV. and Bandarenka, AS.",
  title="Electrochemical top-down synthesis of C-supported Pt nano-particles with controllable shape and size: Mechanistic insights and application",
  journal="Nano Research",
  year="2021",
  volume="14",
  number="8",
  pages="1--8",
  doi="10.1007/s12274-020-3281-z",
  issn="1998-0000",
  url="https://link.springer.com/article/10.1007%2Fs12274-020-3281-z"
}