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Apparent quantum yield measurement

ZW Zheng Wang
YL Ying Luo
TH Takashi Hisatomi
JV Junie Jhon M. Vequizo
SS Sayaka Suzuki
SC Shanshan Chen
MN Mamiko Nakabayashi
LL Lihua Lin
ZP Zhenhua Pan
NK Nobuko Kariya
AY Akira Yamakata
NS Naoya Shibata
TT Tsuyoshi Takata
KT Katsuya Teshima
KD Kazunari Domen
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The apparent quantum yield (AQY) for photocatalytic reaction is given by Eq. (2):

where R and I represent the rate of gas evolution and the incident photon flux, respectively. A is the number of electrons consumed to generate one molecule of H2, and is 2 for photocatalytic hydrogen production from sacrificial methanol solution, and 4 for Z-scheme water splitting based on two-step photoexcitation. The photocatalytic reaction and measurement of the number of incident photons were carried out using the same light source equipped with various band-pass filters. The number of incident photons illuminating the reaction cell was measured using a grating spectroradiometer.

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