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Table 1 Conditions for the preparation of oxidized-metal anodes

From: Molybdenum anode: a novel electrode for enhanced power generation in microbial fuel cells, identified via extensive screening of metal electrodes

Anode Oxidation conditions
EOacid-Al 10% H2SO4 at 5 V for 5 min
HT-Al 620 °C for 6 h
EOacid-Ti 0.1 M H2SO4 at 20 V for 1 min
FO-Ti 2 min
EOalk-Fe 10 M NaOH at 5 V for 10 min
FO-Fe 10 min
EOacid-Ni 10% H2SO4 at 2.5 V for 1 min
EOalk-Ni 10 M NaOH at 5 V for 30 min
FO-Ni 2 min
EOacid-Cu 20% H2SO4 at 2.5 V for 1 min
FO-Cu 2 min
EOalk-Zn 4 M NaOH at 2.5 V for 5 min
HT-Zn 800 °C for 5 min
EOalk-Zr 1% NaOH at 10 V for 1 min
FO-Zr 2 min
EOacid-Nb 0.1 M H2SO4 at 20 V for 1 min
FO-Nb 2 min
EOacid-Mo 0.2 M acetic acid at 30 V for 20 min
EOalk-Mo 1% NaOH at 3 V for 10 min
FO-Mo 10 min
EOacid-Ag 1 M HCl at 3 V for 1 min
EOalk-Ag 1% NaOH at 5 V for 1 min
HT-Ag 920 °C for 11 h
EOacid-In 0.1 M H2SO4 at 5 V for 1 min
EOacid-Sn 0.1 M H2SO4 at 5 V for 1 min
EOalk-Sn 1% NaOH at 10 V for 1 min
HT-Sn 190 °C for 3 h
EOacid-Ta 0.1 M H3PO4 at 10 V for 10 min
EOacid-W 0.1 M H2SO4 at 8 V for 5 min
EOalk-W 1% NaOH at 15 V for 5 min
FO-W 8 min
  1. Treatment time and temperature for the oxidation of metal anodes are shown. The applied voltage and composition of electrolysis solution for electrochemical oxidation are indicated