Electrochimica Acta
Electrochimica Acta
5 years ago

Design of two kinds of branched TiO2 nano array photoanodes and their comparison of photoelectrochemical performances

Design of two kinds of branched TiO2 nano array photoanodes and their comparison of photoelectrochemical performances
Two kinds of branched TiO2 nanorods arrays (TNRs), i.e. rutile nanorod covered with rutile branches (BTNRs) and rutile nanorod covered with anatase branches (ATNRs), were synthesized on FTO films as photoanodes. Photoelectrochemical (PEC) performances of the both photoanodes were comparably evaluated. The PEC hydrogen production rate of ATNRs photoanode is 4.2 and 2.7 times those of the TNRs and BTNRs photoanodes, respectively. The ATNRs showed a highly PEC response because of a lower intrinsic resistance and a heterophase structure between rutile nanorod and anatase branches. The study explicitly ascertains a kind of more effective structure for photoelectrical materials and gives new insight into intrinsic resistance based on PEC analyses.

Publisher URL: www.sciencedirect.com/science

DOI: S0013468617318248

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