Hydrogen production by cracking of ammonium hydroxide using liquid-phase plasma on the modified TiO2 photocatalysts

Kyong Hwan Chung; Young Kwon Park; Sang Chul Jung

doi:10.1016/j.ijhydene.2022.06.032

Hydrogen production by cracking of ammonium hydroxide using liquid-phase plasma on the modified TiO₂ photocatalysts

Kyong Hwan Chung, Young Kwon Park, Sang Chul Jung

School of Environmental Engineering

Sunchon National University

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

8 Scopus citations

Abstract

Ammonia is a promising material as a direct source of green hydrogen production. This paper reports a method for mass production of hydrogen from liquid NH₃(NH₄OH) through a photocatalytic decomposition reaction using liquid plasma. In this reaction, the highest hydrogen production rate was observed in the TiO₂ photocatalyst doped with N and metal ions as a photocatalyst sensitive to visible light with a low bandgap. At this time, the hydrogen production rate was obtained as about 142 L/g∙h. This is due to the high photoactivity of the visible light-sensitive photocatalyst in liquid plasma emitting strong visible light and ultraviolet light. The H₂ production rate obtained from the decomposition of liquid NH₃ by plasma discharge to the catalyst was higher than the H₂ production rate obtained from the NH₃ electrolysis process.

Original language	English
Pages (from-to)	41631-41639
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	98
DOIs	https://doi.org/10.1016/j.ijhydene.2022.06.032
State	Published - 19 Dec 2022

Keywords

H production
Liquid ammonia
Liquid-phase plasma
Modified TiO
Visible light photocatalyst

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2022.06.032

Cite this

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title = "Hydrogen production by cracking of ammonium hydroxide using liquid-phase plasma on the modified TiO2 photocatalysts",

abstract = "Ammonia is a promising material as a direct source of green hydrogen production. This paper reports a method for mass production of hydrogen from liquid NH3(NH4OH) through a photocatalytic decomposition reaction using liquid plasma. In this reaction, the highest hydrogen production rate was observed in the TiO2 photocatalyst doped with N and metal ions as a photocatalyst sensitive to visible light with a low bandgap. At this time, the hydrogen production rate was obtained as about 142 L/g∙h. This is due to the high photoactivity of the visible light-sensitive photocatalyst in liquid plasma emitting strong visible light and ultraviolet light. The H2 production rate obtained from the decomposition of liquid NH3 by plasma discharge to the catalyst was higher than the H2 production rate obtained from the NH3 electrolysis process.",

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author = "Chung, {Kyong Hwan} and Park, {Young Kwon} and Jung, {Sang Chul}",

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AB - Ammonia is a promising material as a direct source of green hydrogen production. This paper reports a method for mass production of hydrogen from liquid NH3(NH4OH) through a photocatalytic decomposition reaction using liquid plasma. In this reaction, the highest hydrogen production rate was observed in the TiO2 photocatalyst doped with N and metal ions as a photocatalyst sensitive to visible light with a low bandgap. At this time, the hydrogen production rate was obtained as about 142 L/g∙h. This is due to the high photoactivity of the visible light-sensitive photocatalyst in liquid plasma emitting strong visible light and ultraviolet light. The H2 production rate obtained from the decomposition of liquid NH3 by plasma discharge to the catalyst was higher than the H2 production rate obtained from the NH3 electrolysis process.

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