Synthesis, characterization, photocatalytic activity and dye-sensitized solar cell performance of nanorods/nanoparticles TiO2 with mesoporous structure

Pavasupree, Sorapong; Ngamsinlapasathian, Supachai; Nakajima, Masafumi; Suzuki, Yoshikazu; Yoshikawa, Shinya

doi:10.1016/j.jphotochem.2006.04.010

Cited by 114 publications

(47 citation statements)

References 26 publications

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“…The improved efficiency through nanowire (or nanorod) dispersion has been also reported e.g. by Baxter and Aydil [4], Tan and Wu [12], and Pavasupree et al [13].…”

Section: Introductionsupporting

confidence: 62%

Addition of TiO2 nanowires in different polymorphs for dye-sensitized solar cells

2007

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TiO 2 (B) and TiO 2 anatase nanowires were prepared at 150• C for 120 h by a hydrothermal method followed by calcination in air at 400• C for 2 h and at 700 • C for 2 h for TiO 2 (B) and TiO 2 anatase, respectively. Although dye-sensitized solar cells (DSC) with fully nanowire electrodes showed a rather low light-to-electricity conversion efficiency of 1.33 % for TiO 2 (B) and 2.42% for TiO 2 anatase, 10 wt % nanowire-dispersed electrodes in a P-25 TiO 2 -nanoparticle matrix demonstrated improved efficiency of 6.17 % for TiO 2 (B) and 6.53% for TiO 2 anatase, these exceeding that of pure P-25 electrodes in this work (η=5.59%). The dominant mechanisms of the improvement at 10 wt% for the two different polymorphs are thought to be different, i.e., a light-scattering and film-thickness increment for the TiO 2 (B) system, whereas there is an improved conduction path through the matrix for the TiO 2 anatase system.

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“…The improved efficiency through nanowire (or nanorod) dispersion has been also reported e.g. by Baxter and Aydil [4], Tan and Wu [12], and Pavasupree et al [13].…”

Section: Introductionsupporting

confidence: 62%

Addition of TiO2 nanowires in different polymorphs for dye-sensitized solar cells

2007

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“…Since, neither long-time hydrothermal treatment nor mixing process with nanopowder is required for this process, it is in principle cost-effective. However, microstructural control and optimization are required, and these will be the subject of our forthcoming papers [46,47]. attachment crystal growth" of nanoparticles by SATM.…”

Section: Discussionmentioning

confidence: 99%

Partially nanowire-structured TiO2 electrode for dye-sensitized solar cells

2006

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Partially nanowire-structured TiO 2 was prepared by a hydrothermal processing followed by calcination in air. The hydrogen titanate powder as-synthesized was calcined at 300• C for 4 h to obtain the partially nanowire-structured TiO 2 . A dye-sensitized solar cell (DSC) with a film thickness of 5.6 μm, fabricated using the partially nanowire-structured TiO 2 showed better performance than using a fully nanowire-structured TiO 2 or a conventional equi-axed TiO 2 nanopowder. The short-circuit current density (J SC ), the open-circuit voltage (V OC ), the fill factor (FF) and the overall efficiency (η) are 11.9 mA/cm 2 , 0.754 V, 0.673 and 6.01 %, respectively. The effects of one-dimensional nanostructure and electron expressway concept are discussed.

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“…electron transfer ability [41,42] in comparison to Cu-02 due to the reason that the photocatalytic activity is dependent on the structural morphology of the nanotubes with enhanced surface area resulting in an increase of electron transfer ability [41,42]. Cu-01 with the optimum addition amount of Cu is selected to compare the band gap value with a pure-TiO2 sample labelled Cu-00.…”

Section: Simazine Photodegradation Analysismentioning

confidence: 99%

TiO2 Nanotubes Supported Cu Nanoparticles for Improving Photocatalytic Degradation of Simazine under UV Illumination

et al. 2016

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Nano size Copper (Cu) incorporated TiO 2 nanotubes was successfully synthesized via the anodic oxidation technique in ethylene glycol (EG) containing 0.5 wt % NH 4 F and 1.6 wt % KOH for the photocatalytic degradation of Simazine (2-chloro-4, 6-diethylamino-1,3,5-triazine) under Ultraviolet (UV) illumination. In the present study, the influence of different loading Cu concentrations on the formation of Cu-TiO 2 nanotubes film towards the photocatalytic degradation of Simazine is reported. Based on our study, it was found that the optimum Cu loading concentration was about 0.45 wt % on TiO 2 nanotubes film for approximately 64% photocatalytic degradation of Simazine after 4 h under UV illumination. This finding was mainly attributed to the uniform surface covering of the Cu loaded TiO 2 NTs which acted as electron traps, preventing the recombination of electron hole pairs, eventually leading to higher photocatalytic activity of our photocatalyst in degrading the targeted organic pollutant, Simazine. Moreover, an increased kinetic rate of the degradation to 0.0135 h −1 was observed in the presence of Cu in TiO 2 NTs.

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Synthesis, characterization, photocatalytic activity and dye-sensitized solar cell performance of nanorods/nanoparticles TiO2 with mesoporous structure

Cited by 114 publications

References 26 publications

Addition of TiO2 nanowires in different polymorphs for dye-sensitized solar cells

Addition of TiO2 nanowires in different polymorphs for dye-sensitized solar cells

Partially nanowire-structured TiO2 electrode for dye-sensitized solar cells

TiO2 Nanotubes Supported Cu Nanoparticles for Improving Photocatalytic Degradation of Simazine under UV Illumination

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