Publication detail

Edge vs. basal plane electrochemistry of layered pnictogens (As, Sb, Bi): Doesedge always offer faster electron transfer?

MARVAN, P. HUBER, Š. LUXA, J. MAZÁNEK, V. SEDMIDUBSKÝ, D. SOFER, Z. PUMERA, M.

Original Title

Edge vs. basal plane electrochemistry of layered pnictogens (As, Sb, Bi): Doesedge always offer faster electron transfer?

Type

journal article in Web of Science

Language

English

Original Abstract

Materials with layered structure are at the forefront of material research. Graphite, MoS2 and black phosphorus, as layered materials, exhibit, in general, fast heterogeneous transfer at the edge planes and slow at the basal plane for many electroactive molecules. There is a fundamental question whether this is general behaviour of layered materials. Here, we examined fundamental electrochemistry of layered pnictogens (As, Sb and Bi)using single crystal edge- and basal-plane electrodes. Significant differences in behaviour of edge and basal plane surface for the electrochemical properties were found. The surface morphology of electrodes was examinated in detail. The electrochemical activity was investigated by both, inner and outer sphere probes. Several trends related to the pnictogen position in periodic table were observed. Importantly, an increasing activity of basal plane with atomic number was observed and attributed to the decreasing degree of anisotropy. However, catalytic activity towards hydrogen evolution reaction (HER)was observed only for the edge-planes of the electrodes.

Keywords

Pnictogens, Electrochemistry, Anisotropy, Layered materials

Authors

MARVAN, P.; HUBER, Š.; LUXA, J.; MAZÁNEK, V.; SEDMIDUBSKÝ, D.; SOFER, Z.; PUMERA, M.

Released

1. 9. 2019

ISBN

2352-9407

Periodical

Applied Materials Today

Year of study

16

Number

1

State

Kingdom of the Netherlands

Pages from

179

Pages to

184

Pages count

6

URL

https://www.sciencedirect.com/science/article/pii/S235294071930191X?via%3Dihub

BibTex

@article{BUT158498,
  author="Petr {Marvan} and Štěpán {Huber} and Jan {Luxa} and Vlastimil {Mazánek} and David {Sedmidubský} and Zdeněk {Sofer} and Martin {Pumera}",
  title="Edge vs. basal plane electrochemistry of layered pnictogens (As, Sb, Bi): Doesedge always offer faster electron transfer?",
  journal="Applied Materials Today",
  year="2019",
  volume="16",
  number="1",
  pages="179--184",
  doi="10.1016/j.apmt.2019.05.009",
  issn="2352-9407",
  url="https://www.sciencedirect.com/science/article/pii/S235294071930191X?via%3Dihub"
}