Journal
AICHE JOURNAL
Volume 62, Issue 2, Pages 352-358Publisher
WILEY
DOI: 10.1002/aic.15048
Keywords
water splitting; hydrogen; photoelectrode; pulsed anodization; doping
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Funding
- Research Grant Council of Hong Kong through the General Research Fund [103311]
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Significance A new technique of in situ doping of alkali metal (Li+, Na+, K+, Rb+, and Cs+) in Nb2O5 was showcased by the modified anodization of Nb foils at high frequency, negative-to-positive pulsed voltage. At the optimized dopant concentration and synthesis condition, the doped-Nb2O5 shows twofold enhancement in photoelectrochemical water splitting efficiencies compared with the undoped Nb2O5 electrode, as a result of improved charge carrier density and enhanced surface charge transfer. (c) 2015 American Institute of Chemical Engineers
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