摘要
In this work, we demonstrate the CoOOH/（Ti,C）-Fe2O3（CTCF） nanorods prepared by a facile approach as well as their implementation as photoanodes for photoelectrochemical（PEC） water splitting. The photocurrent density of CTCF photoanode is 1.85 m A cm-2 at ＋1.23 V vs. reversible hydrogen electrode（RHE）, which is more than 20 times higher than that of pristine α-Fe2O3 photoanode（0.08 m A cm-2）. The incident-photo-to-current conversion efficiency, applied bias photo-to-current efficiency and transfer efficiency of CTCF photoanode reaches 31.2% at 380 nm（＋1.23 V vs. RHE）,0.11%（＋1.11 V vs. RHE）, 68.2%（＋1.23 V vs. RHE） respectively, which are much higher than those of pristine α-Fe2O3 photoanode. Additionally, the longtime irradiation PEC water splitting of CTCF photoanode demonstrates its high stability at extreme voltage in NaOH（pH 14）.
本论文利用一种温和的方法合成了CoOOH/(Ti,C)-Fe_2O_3(CTCF)纳米棒光阳极,并对其光电解水性能进行了研究.在可见光照和1.0 V偏压(相对可逆氢电极)条件下,CTCF光阳极产生的光电流密度为1.85 mA cm^(-2),远高于传统的α-Fe_2O_3光阳极的光电流密度.同时,该电极在强碱性电解液中(pH 14)可以保持较长时间的稳定性.
基金
preliminarily supported by the National Natural Science Foundation of China (21706295, 51772135 and 21376104)
the Natural Science Foundation of Guangdong Province (2017A030313055 and 2014A030306010
Jinan University (11617326 and 88017418)
