Using CuSO4 as the copper source, nanostructured copper with four different morphologies was obtained by electrodeposition method on FTO substrates. The as-synthesized Cu/FTO samples were characterized by X-ray diffra...Using CuSO4 as the copper source, nanostructured copper with four different morphologies was obtained by electrodeposition method on FTO substrates. The as-synthesized Cu/FTO samples were characterized by X-ray diffraction （XRD）, diffuse reflectance spectroscopy （DRS）, Raman, X-ray photoelectron spectroscopy （XPS）, scanning electron microscopy （SEM）, energy-dispersive X-ray spectroscopy （EDS）, and transmission electron micros- copy （TEM）. The effects of electrodeposition potential and electrodeposition time on the Cu/FTO samples and the photocatalytic performance were investigated systematically. The results showed that the Cu/FTO samples were well-crystallized and the morphologies could be changed from nanoslices to nanodendrites structure with the negative shift of the depositing potential. The electrodeposition potential and time have a significant effect on the amount of Hz evolution. The obtained Cu nanospheres which were prepared at the potential of-0.65 V for 600 s showed the best photocatalytic behavior. The mechanisms for the photocatalytic activities were also discussed.展开更多
基金This work was supported by National Natural Science Foundation of China （Nos. 21371060, 215710644 the Pearl River S＆T Nova Program of Guangzhou （No. 2014J2200047） and the Fundamental Research Funds for the Central Universities （No. 2015ZM162）.
文摘Using CuSO4 as the copper source, nanostructured copper with four different morphologies was obtained by electrodeposition method on FTO substrates. The as-synthesized Cu/FTO samples were characterized by X-ray diffraction （XRD）, diffuse reflectance spectroscopy （DRS）, Raman, X-ray photoelectron spectroscopy （XPS）, scanning electron microscopy （SEM）, energy-dispersive X-ray spectroscopy （EDS）, and transmission electron micros- copy （TEM）. The effects of electrodeposition potential and electrodeposition time on the Cu/FTO samples and the photocatalytic performance were investigated systematically. The results showed that the Cu/FTO samples were well-crystallized and the morphologies could be changed from nanoslices to nanodendrites structure with the negative shift of the depositing potential. The electrodeposition potential and time have a significant effect on the amount of Hz evolution. The obtained Cu nanospheres which were prepared at the potential of-0.65 V for 600 s showed the best photocatalytic behavior. The mechanisms for the photocatalytic activities were also discussed.
