Highly stable GaN photocatalyst for producing H2 gas from water

Kazuhiro Ohkawa; Wataru Ohara; Daisuke Uchida; Momoko Deura

doi:10.7567/JJAP.52.08JH04

Highly stable GaN photocatalyst for producing H₂ gas from water

Kazuhiro Ohkawa, Wataru Ohara, Daisuke Uchida, Momoko Deura

Materials Design Division

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

35 Citations (Scopus)

Abstract

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 language	English
Article number	08JH04
Journal	Japanese journal of applied physics
Volume	52
Issue number	8 PART 2
DOIs	https://doi.org/10.7567/JJAP.52.08JH04
Publication status	Published - 2013 Aug 1

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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AB - 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).

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