Diamond photochemistry with visible light

Jonathon Barkl; Anna M. Zaniewski; Franz Koeck; Robert J. Nemanich

doi:10.1016/j.diamond.2019.05.011

Diamond photochemistry with visible light

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

Physics

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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 language	English (US)
Pages (from-to)	195-197
Number of pages	3
Journal	Diamond and Related Materials
Volume	96
DOIs	https://doi.org/10.1016/j.diamond.2019.05.011
State	Published - Jun 2019

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Chemistry
Mechanical Engineering
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.diamond.2019.05.011

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title = "Diamond photochemistry with visible light",

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.",

author = "Jonathon Barkl and Zaniewski, {Anna M.} and Franz Koeck and Nemanich, {Robert J.}",

note = "Funding Information: This work is supported through the National Science Foundation under Grant # DMR-1710551 . We gratefully acknowledge the use of facilities with the LeRoy Eyring Center for Solid State Science at Arizona State University. We thank David Wright and Robert J. Hamers for insightful conversations, and Xinge Wang for assistance. J.B. acknowledges the Arizona NASA Space Grant Consortium for support. Publisher Copyright: {\textcopyright} 2019",

year = "2019",

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doi = "10.1016/j.diamond.2019.05.011",

language = "English (US)",

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T1 - Diamond photochemistry with visible light

AU - Barkl, Jonathon

AU - Zaniewski, Anna M.

AU - Koeck, Franz

AU - Nemanich, Robert J.

N1 - Funding Information: This work is supported through the National Science Foundation under Grant # DMR-1710551 . We gratefully acknowledge the use of facilities with the LeRoy Eyring Center for Solid State Science at Arizona State University. We thank David Wright and Robert J. Hamers for insightful conversations, and Xinge Wang for assistance. J.B. acknowledges the Arizona NASA Space Grant Consortium for support. Publisher Copyright: © 2019

PY - 2019/6

Y1 - 2019/6

N2 - 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.

AB - 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.

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JO - Diamond and Related Materials

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Diamond photochemistry with visible light

Abstract

ASJC Scopus subject areas

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