The influence of an earth-abundant water oxidation electrocatalyst (Co-Pi) on solar water oxidation by W:BiVO4 has been studied using photoelectrochemical (PEC) techniques. Modification of W:BiVO4 photoanode surfaces with Co-Pi has yielded a very large (similar to 440 mV) cathodic shift in the onset potential for sustained PEC water oxidation at pH 8. PEC experiments with H2O2 as a surrogate substrate have revealed that interfacing Co-Pi with these W:BiVO4 photoanodes almost completely eliminates losses due to surface electron-hole recombination. The results obtained for W:BiVO4 are compared with those reported recently for Co-Pi/alpha-Fe2O3 photoanodes. The low absolute onset potential of similar to 310 mV vs RHE achieved with the Co-Pi/W:BiVO4 combination is promising for overall solar water splitting in low-cost tandem PEC cells, and is encouraging for application of this surface modification strategy to other candidate photoanodes.
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Kudo, A
;
Ueda, K
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Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Ueda, K
;
Kato, H
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Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Kato, H
;
Mikami, I
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Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
机构:
Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
Li, Mingtao
;
Zhao, Liang
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Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
Zhao, Liang
;
Guo, Liejin
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Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Kudo, A
;
Ueda, K
论文数: 0引用数: 0
h-index: 0
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Ueda, K
;
Kato, H
论文数: 0引用数: 0
h-index: 0
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Kato, H
;
Mikami, I
论文数: 0引用数: 0
h-index: 0
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
机构:
Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
Li, Mingtao
;
Zhao, Liang
论文数: 0引用数: 0
h-index: 0
机构:
Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
Zhao, Liang
;
Guo, Liejin
论文数: 0引用数: 0
h-index: 0
机构:
Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China