Highly stable GaN photocatalyst for producing H2 gas from water

Kazuhiro Ohkawa, Wataru Ohara, Daisuke Uchida, Momoko Deura

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


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
Article number08JH04
JournalJapanese journal of applied physics
Issue number8 PART 2
Publication statusPublished - 2013 Aug 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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