Diamond photochemistry with visible light

Jonathon Barkl, Anna M. Zaniewski, Franz Koeck, Robert Nemanich

Research output: Contribution to journalArticle

Abstract

This project demonstrates diamond-based photochemistry using visible light. Diamond has the unique property of having a widely tunable electrochemical surface, with hydrogen terminated diamond known to have a negative electron affinity. This property enables the emission of electrons from the surface of the diamond. In this work, electrons are emitted into an aqueous solution, creating a reservoir of free, solvated electrons, that can be used to initiate energy intensive chemical reactions. We demonstrate that visible light incident on thin films of diamond on molybdenum substrates can be used to reduce nitrogen gas to ammonia via the photogenerated electrons.

Original languageEnglish (US)
Pages (from-to)195-197
Number of pages3
JournalDiamond and Related Materials
Volume96
DOIs
StatePublished - Jun 1 2019
Externally publishedYes

Fingerprint

Diamond
Photochemical reactions
photochemical reactions
Diamonds
diamonds
Electrons
negative electron affinity
Electron affinity
electrons
Molybdenum
Ammonia
free electrons
molybdenum
ammonia
Chemical reactions
Hydrogen
chemical reactions
Nitrogen
Gases
aqueous solutions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Diamond photochemistry with visible light. / Barkl, Jonathon; Zaniewski, Anna M.; Koeck, Franz; Nemanich, Robert.

In: Diamond and Related Materials, Vol. 96, 01.06.2019, p. 195-197.

Research output: Contribution to journalArticle

Barkl, Jonathon ; Zaniewski, Anna M. ; Koeck, Franz ; Nemanich, Robert. / Diamond photochemistry with visible light. In: Diamond and Related Materials. 2019 ; Vol. 96. pp. 195-197.
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