Innovative Strategy on Hydrogen Evolution Reaction Utilizing Activated Liquid Water

Bing Joe Hwang, Hsiao Chien Chen, Fu Der Mai, Hui Yen Tsai, Chih Ping Yang, John Rick, Yu Chuan Liu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Splitting water for hydrogen production using light, or electrical energy, is the most developed 'green technique'. For increasing efficiency in hydrogen production, currently, the most exciting and thriving strategies are focused on efficient and inexpensive catalysts. Here, we report an innovative idea for efficient hydrogen evolution reaction (HER) utilizing plasmon-activated liquid water with reduced hydrogen-bonded structure by hot electron transfer. This strategy is effective for all HERs in acidic, basic and neutral systems, photocatalytic system with a g-C3N4 (graphite carbon nitride) electrode, as well as in an inert system with an ITO (indium tin oxide) electrode. Compared to deionized water, the efficiency of HER increases by 48% based on activated water ex situ on a Pt electrode. Increase in energy efficiency from activated water is 18% at a specific current yield of-20 mA in situ on a nanoscale-granulated Au electrode. Moreover, the onset potential of-0.023 V vs RHE was very close to the thermodynamic potential of the HER (0 V). The measured current density at the corresponding overpotential for HER in an acidic system was higher than any data previously reported in the literature. This approach establishes a new vista in clean green energy production.

Original languageEnglish
Article number16263
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - Nov 6 2015

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Hydrogen
Water
Liquids
Electrodes
Hydrogen production
Graphite
Hot electrons
Deionized water
Energy efficiency
Current density
Thermodynamics
Catalysts

ASJC Scopus subject areas

  • General

Cite this

Innovative Strategy on Hydrogen Evolution Reaction Utilizing Activated Liquid Water. / Hwang, Bing Joe; Chen, Hsiao Chien; Mai, Fu Der; Tsai, Hui Yen; Yang, Chih Ping; Rick, John; Liu, Yu Chuan.

In: Scientific Reports, Vol. 5, 16263, 06.11.2015.

Research output: Contribution to journalArticle

Hwang, Bing Joe ; Chen, Hsiao Chien ; Mai, Fu Der ; Tsai, Hui Yen ; Yang, Chih Ping ; Rick, John ; Liu, Yu Chuan. / Innovative Strategy on Hydrogen Evolution Reaction Utilizing Activated Liquid Water. In: Scientific Reports. 2015 ; Vol. 5.
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