摘要
通过两步电化学沉积法制备了Eu2O3/CeO2复合电极,并在300℃与空气气氛中进行热处理.研究结果表明,所制备的复合电极具有良好的结晶性能,电极具有良好的阵列结构,其纳米棒直径约为100-160 nm.在0.1 mol/L KOH＋0.1 mol/L CH3CH2OH电解液中进行光电化学研究表明,铕可促进光生空穴向电解质界面的转移,提高电极表面电荷的累积量,光电流为纯CeO2的1.5倍,禁带宽度为2.71 eV.因此通过Eu2O3与CeO2的复合可获得良好的复合电极材料.
The EuzO3/CeOz electrodes were prepared by a two step electrochemical deposition, and then treated at 300℃ at air atmosphere. The results showed that the prepared composite electrodes are consisted of nanoarray with diameter of 100 -160nm. By using the photoelectrochemical research with 0.1 mol/L KOH ＋ 0. 1 mol/L CH3 CH2 OH as electrolytes, the results showed that the Eu2 03 can promote the transfer of the photo - generated hole to the electrolyte interface, and increase the accumulation of the surface charge of the electrode. The photocurrent is 1.5 times more than that of pure CeO2, which may be affected by the small band gap of 2. 71 eV. So the favorable composite electrode materials can be obtained with Eu/O3 and CeO2.
出处
《运城学院学报》
2016年第6期52-55,共4页
Journal of Yuncheng University
基金
国家自然科学基金项目(21576230)
关键词
电沉积法
纳米阵列
光电化学性能
Electrodeposition
Nanoarray
Photoelectrochemical performance
