共 38 条
Enhanced Photocurrent of Titania Nanotube Photoelectrode Decorated with CdS Nanoparticles
被引:7
作者:

Ayal, Asmaa Kadim
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Baghdad, Dept Chem, Coll Sci Women, Baghdad, Iraq Univ Baghdad, Dept Chem, Coll Sci Women, Baghdad, Iraq
机构:
[1] Univ Baghdad, Dept Chem, Coll Sci Women, Baghdad, Iraq
关键词:
Electrochemical deposition;
CdS/TiO2;
nanotube;
Photoelectrochemical;
anodizing;
D O I:
10.21123/bsj.2018.15.1.0057
中图分类号:
O [数理科学和化学];
P [天文学、地球科学];
Q [生物科学];
N [自然科学总论];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
In this work, CdS/TiO2 nanotubes composite nanofilms were successfully synthesized via electrodeposition technique. TiO2 titania nanotube arrays (NTAs) are commonly used in photoelectrochemical cells as the photoelectrode due to their high surface area, excellent charge transfer between interfaces and fewer interfacial grain boundaries. The anodization technique of titanium foil was used to prepare TiO2 NTAs photoelectrode. The concentration of CdCl2 played an important role in the formation of CdS nanoparticles. Field emission scanning electron microscopy (FESEM) shows that the CdS nanoparticles were well deposited onto the outer and inner of nanotube at 40 mM of CdCl2. X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analyses were executed for the determination of the composition and crystalline structure of the synthesized samples. Furthermore, the data of EDX confirms the formation of titanium and oxygen for TiO2 nanotubes and cadmium and sulfide for CdS deposits. UV-visible diffuse reflectance spectroscopy (UV-DRS) displayed that CdS nanoparticle which deposited onto TiO2 NTAs causes a red-shift into the visible region. CdS/TiO2 NTAs sample prepared at 40 mM of CdCl2 showed maximum photocurrent of 1.745 mA cm(-2) while the bare TiO2 NTAs showed 0.026 mA cm(-1).
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页码:57 / 62
页数:6
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