Highly ordered TiO2 nanotube arrays were fabricated via electrochemical anodization, and CdS nanoparticles were deposited on TiO2 nanotube arrays through sequential chemical bath deposition technique. The influence of water content on the intertube space and length and pore size of TiO2 nanotubes were studied systematically. The uniformity of CdS nanoparticles deposited on the TiO2 nanotube arrays with different intertube spaces was also investigated. The results show that when the water content increased from 2 to 10 vol.%, the shape of TiO2 nanotubes changed from hexagon to round with the increasing intertube space, and CdS nanoparticles could be deposited uniformly both inside and outside of TiO2 nanotubes when the water content was 10 vol.%.
MorGKVargheseOKPauloseM. Fabrication of hydrogen sensors with transparent titanium oxide nanotube-array thin films as sensing elements. Thin Solid Films2006; 496: 42–48.
2.
VargheseOKPauloseMGrimesCA. Long vertically aligned titania nanotubes on transparent conducting oxide for highly efficient solar cells. Nat Nanotechnol2009; 4: 592–597.
MorGKVargheseOKPauloseM. A review on highly ordered, vertically oriented TiO2 nanotube arrays: fabrication, material properties, and solar energy applications. Sol Energ Mat Sol C2006; 90: 2011–2075.
5.
OhnoTTsubotaTNishijimaK. Degradation of methylene blue on carbonate species-doped TiO2 photocatalysts under visible light. Chem Lett2004; 33: 750–751.
6.
OhnoTMitsuiTOhnoT. Photocatalytic activity of S-doped TiO2 photocatalyst under visible light. Chem Lett2003; 32: 364–365.
StathatosEPetrovaTLianosP. Study of the efficiency of visible-light photocatalytic degradation of basic blue adsorbed on pure and doped mesoporous titania films. Langmuir2001; 17: 5025–5030.
9.
LinYMTsengYHHuangJH. Photocatalytic activity for degradation of nitrogen oxides over visible light responsive titania-based photocatalysts. Environ Sci Technol2006; 40: 1616–1621.
10.
BanerjeeSMohapatraSKDasPP. Synthesis of coupled semiconductor by filling 1D TiO2 nanotubes with CdS. Chem Mater2008; 20: 6784–6791.
11.
HenselJWangGLiY. Synergistic effect of CdSe quantum dot sensitization and nitrogen doping of TiO2 nanostructures for photoelectrochemical solar hydrogen generation. Nano Lett2010; 10: 478–483.
12.
PlassRSergePKrugerJ. Quantum dot sensitization of organic-inorganic hybrid solar cells. J Phys Chem B2002; 106: 7578–7580.
13.
BakerDRKamatPV. Photosensitization of TiO2 nanostructures with CdS quantum dots: particulate versus tubular support architectures. Adv Funct Mater2009; 19: 805–811.
14.
LiuYBZhouHBZhouBX. Highly stable CdS-modified short TiO2 nanotube array electrode for efficient visible-light hydrogen generation. Int J Hydrogen Energ2011; 36: 167–174.
GaoXFSunWTHuZD. An efficient method to form heterojunction CdS/TiO2 photoelectrodes using highly ordered TiO2 nanotube array films. J Phys Chem C2009; 113: 20481–20485.
17.
ShaoZBZhuWLiZ. One-step fabrication of CdS nanoparticle-sensitized TiO2 nanotube arrays via electrodeposition. J Phys Chem C2012; 116: 2438–2442.
18.
PrakasamHEShankarKPauloseM. A new benchmark for TiO2 nanotube array growth by anodization. J Phys Chem C2007; 111: 7235–7241.
19.
LinCJYuYHLiouYH. Free-standing TiO2 nanotube array films sensitized with CdS as highly active solar light-driven photocatalysts. Appl Catal B: Environ2009; 93: 119–125.
