TY - JOUR
T1 - The hydrothermal and solvothermal synthesis of LiTaO3 photocatalyst
T2 - Suppressing the deterioration of the water splitting activity without using a cocatalyst
AU - Takasugi, Soichi
AU - Tomita, Koji
AU - Iwaoka, Michio
AU - Kato, Hideki
AU - Kakihana, Masato
N1 - Funding Information:
This study was supported by JSPS KAKENHI Grant Number 22246081 and was conducted as part of the Cooperative Research Program of “Network Joint Research Center for Materials and Devices.” The authors would like to thank Enago ( www.enago.jp ) for the English language review.
Publisher Copyright:
Copyright © 2015, Hydrogen Energy Publications, LLC.
PY - 2015/5/4
Y1 - 2015/5/4
N2 - Abstract LiTaO3 photocatalysts having high water splitting activity in the absence of cocatalyst were synthesized using hydrothermal and solvothermal methods. The particle size of the hydrothermally synthesized LiTaO3 was 500-3000 nm, and the H2 generation rate under ultraviolet irradiation without cocatalyst was as low as 8 μmol/h. Conversely, LiTaO3 synthesized by the solvothermal method using acetone as the solvent showed high H2 generation rate of over 600 μmol/h. The Brunauer-Emmett-Teller surface area of the solvothermally synthesized LiTaO3 was 23.7 m2/g, and the particle size was 10-30 nm. In the long-term water splitting experiment on the LiTaO3 synthesized by the solvothermal method, the H2 generation rates did not change for 30 d, and the catalytic turnover number was 510.
AB - Abstract LiTaO3 photocatalysts having high water splitting activity in the absence of cocatalyst were synthesized using hydrothermal and solvothermal methods. The particle size of the hydrothermally synthesized LiTaO3 was 500-3000 nm, and the H2 generation rate under ultraviolet irradiation without cocatalyst was as low as 8 μmol/h. Conversely, LiTaO3 synthesized by the solvothermal method using acetone as the solvent showed high H2 generation rate of over 600 μmol/h. The Brunauer-Emmett-Teller surface area of the solvothermally synthesized LiTaO3 was 23.7 m2/g, and the particle size was 10-30 nm. In the long-term water splitting experiment on the LiTaO3 synthesized by the solvothermal method, the H2 generation rates did not change for 30 d, and the catalytic turnover number was 510.
KW - Cocatalyst
KW - Deterioration of photocatalyst
KW - Hydrothermal method
KW - LiTaO
KW - Solvothermal method
KW - Water splitting photocatalyst
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U2 - 10.1016/j.ijhydene.2015.02.121
DO - 10.1016/j.ijhydene.2015.02.121
M3 - Article
AN - SCOPUS:84926406992
VL - 40
SP - 5638
EP - 5643
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 16
M1 - 15536
ER -