TY - JOUR
T1 - Z-scheme-type conductive-polymer-P3HT/KTa(Zr)O3 heterojunction composites for enhancing the photocatalytic activity of water splitting
AU - Koganemaru, Yuta
AU - Kim, Yoonyoung
AU - Watanabe, Motonori
AU - Takagaki, Atsushi
AU - Ishihara, Tatsumi
N1 - Funding Information:
This study were supported by Grant-in-Aids for Science Research ( JP17H04888 ) and Grant-in-Aid for Specially Promoted Research ( JP16H06293 ) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) , Japan and the Strategic International Collaborative Research Program (SICORP) in “Research on Hydrogen as a renewable energy carrier” from Japan Science and Technology Agency (JST) , Japan, and was performed under the research program of I2CNER, funded by the World Premier International Research Center Initiative (WPI) , MEXT, Japan.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/7/25
Y1 - 2020/7/25
N2 - Photocatalytic water splitting on Pt/KTa(Zr)O3 modified with poly(3-hexylthiophene-2,5-diyl) (P3HT) as a photoconductive organic polymer is investigated. The photocatalyst powder of Pt/P3HT/KTa(Zr)O3 was synthesized by evaporation to dryness method. The H2/O2 production ratio of the unmodified catalyst was 2.90, whereas the H2/O2 production ratio become close to 2 (1.66–2.26) with loading P3HT (0.1 wt% to 0.8 wt%). The optimum amount of P3HT added was 0.4 wt% and the H2/O2 production ratio was 2.00, which increased the hydrogen production rate by 476 % compared to the unmodified photocatalyst. As a result of the fluorescence lifetime measurement, when the dye and platinum were supported on KTa(Zr)O3, charge separation into the dye and platinum was confirmed in both UV and visible light irradiation. Irradiation with visible light in addition to UV light increased the water splitting activity, while water decomposition was not performed only with visible light, suggests Z-scheme type water splitting reaction.
AB - Photocatalytic water splitting on Pt/KTa(Zr)O3 modified with poly(3-hexylthiophene-2,5-diyl) (P3HT) as a photoconductive organic polymer is investigated. The photocatalyst powder of Pt/P3HT/KTa(Zr)O3 was synthesized by evaporation to dryness method. The H2/O2 production ratio of the unmodified catalyst was 2.90, whereas the H2/O2 production ratio become close to 2 (1.66–2.26) with loading P3HT (0.1 wt% to 0.8 wt%). The optimum amount of P3HT added was 0.4 wt% and the H2/O2 production ratio was 2.00, which increased the hydrogen production rate by 476 % compared to the unmodified photocatalyst. As a result of the fluorescence lifetime measurement, when the dye and platinum were supported on KTa(Zr)O3, charge separation into the dye and platinum was confirmed in both UV and visible light irradiation. Irradiation with visible light in addition to UV light increased the water splitting activity, while water decomposition was not performed only with visible light, suggests Z-scheme type water splitting reaction.
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U2 - 10.1016/j.apcata.2020.117737
DO - 10.1016/j.apcata.2020.117737
M3 - Article
AN - SCOPUS:85087974059
SN - 0926-860X
VL - 602
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
M1 - 117737
ER -
