Detail publikace

Atomic Layer Deposition of Electrocatalytic Insulator Al2O3 on Three-Dimensional Printed Nanocarbons

NG, S. IFFELSBERGER, C. MICHALIČKA, J. PUMERA, M.

Originální název

Atomic Layer Deposition of Electrocatalytic Insulator Al2O3 on Three-Dimensional Printed Nanocarbons

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The advantages of three-dimensional (3D) printing technologies, such as rapid-prototyping and the freedom to customize electrodes in any design, have elevated the benchmark of conventional electrochemical studies. Furthermore, the 3D printed electrodes conveniently accommodate other active layers for diverse applications such as energy storage, catalysis, and sensors. Nevertheless, to enhance a complex 3D structure while preserving the fine morphology, conformal deposition by atomic layer deposition (ALD) technique is a powerful solution. Herein, we present the concept of coating Al2O3 by ALD with different thicknesses from 20 to 120 cycles on the 3D printed nanocarbon/PLA electrodes for the electrocatalytic oxidation of catechol as an important biomarker. Overall, 80 ALD cycle Al2O3 achieved an optimum thickness for catechol electrocatalysis. This is resonated with the enhanced adsorption of catechol at the electrode surface and efficient electron transfer, according to the two-proton, two-electron-transfer mechanism, as well as for the passivation of surface defects of the nanocarbon electrode. This work compellingly demonstrates the prospect of 3D printed electrodes modified by a functional layer utilizing a low-temperature ALD process that can be extended to other arbitrary surfaces.

Klíčová slova

three-dimensional printing; Al2O3 coating; nucleation; scanning electrochemical microscope; electrocatalyst; catechol oxidation; charge transfer

Autoři

NG, S.; IFFELSBERGER, C.; MICHALIČKA, J.; PUMERA, M.

Vydáno

26. 1. 2021

Nakladatel

AMER CHEMICAL SOC

Místo

WASHINGTON

ISSN

1936-0851

Periodikum

ACS Nano

Ročník

15

Číslo

1

Stát

Spojené státy americké

Strany od

686

Strany do

697

Strany počet

12

URL

https://pubs.acs.org/doi/10.1021/acsnano.0c06961#

BibTex

@article{BUT171206,
  author="Siow Woon {Ng} and Christian {Iffelsberger} and Jan {Michalička} and Martin {Pumera}",
  title="Atomic Layer Deposition of Electrocatalytic Insulator Al2O3 on Three-Dimensional Printed Nanocarbons",
  journal="ACS Nano",
  year="2021",
  volume="15",
  number="1",
  pages="686--697",
  doi="10.1021/acsnano.0c06961",
  issn="1936-0851",
  url="https://pubs.acs.org/doi/10.1021/acsnano.0c06961#"
}