TiO2纳米管电极上电化学还原CO2生成CH3OH

裘建平,童怡雯,赵德明,何志桥,陈建孟,宋爽

Electrochemical Reduction of CO2 to Methanol at TiO2 Nanotube Electrodes

Jian-Ping QIU,Yi-Wen TONG,De-Ming ZHAO,Zhi-Qiao HE,Jian-Meng CHEN,Shuang SONG

表2 不同半导体电极产甲醇性能比较

Table 2 Electrochemical reduction of CO2 to methanol on different semiconductor electrodes.

Electrode Potential/V(vs SHE) FE/% PCD/(mA·cm?2) Production rate/(μmol·cm?2·h?1) Electrolyte n-GaAs8 ?1.06 1.0 0.16 1.00 Sat. Na2SO4 p-GaAs8 ?1.06 0.52 0.08 0.50 Sat. Na2SO4 p-InP8 ?1.06 0.8 0.06 0.37 Sat. Na2SO4 CuO11 ?1.30 38.0 6.9 43.00 0.5 mol·L?1 KHCO3 TiO2NTs-450 ?0.56 85.8 0.2 1.25 0.1 mol·L?1 KHCO3 TiO2NTs-550 ?0.56 78.6 0.16 1 0.1 mol·L?1 KHCO3 TiO2NTs-650 ?0.56 72.2 0.1 0.62 0.1 mol·L?1 KHCO3