Highly stable GaN photocatalyst for producing H2 gas from water

Kazuhiro Ohkawa, Wataru Ohara, Daisuke Uchida, Momoko Deura

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


Efficient production of H2 from water without the use of an extra bias or any sacrificial reagents is possible using a GaN photocatalyst with a NiO cocatalyst. The average energy conversion efficiency from light energy to H2 energy was approximately 1% for 500 h. The total amount of hydrogen was 184 mL/cm2 of the GaN surface. H2 production rate was as high as 0.37 mL/(cm2-h).

Original languageEnglish (US)
Article number08JH04
JournalJapanese Journal of Applied Physics
Issue number8 PART 2
StatePublished - Aug 2013
Externally publishedYes

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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