HYDROTHERMAL SYNTHESIS OF TiO<sub>2</sub> NANOTUBE / NANOWIRE AND THEIR APPLICATION FOR DYE-SENSITIZED SOLAR CELL

Uchida, Satoshi; Sanehira, Y.; Chiba, Ryuichi; Tomiha, Miho; Masaki, N; Shirai, Masayuki

doi:10.1142/9789812705228_0065

Cited by 28 publications

(37 citation statements)

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“…TiO 2 materials with different shapes, such as nanoparticles, nanotubes, nanowires and nanofibers, have been applied to fabricate the porous film electrodes [73][74][75]. It is expected that the large surface area and pore volume of MTNs will improve the dye absorption, thereby increasing the light absorption efficiency in DSSCs.…”

Section: Photovoltaic Applicationsmentioning

confidence: 99%

Recent progress in mesoporous titania materials: adjusting morphology for innovative applications

Vivero‐Escoto

Chiang

et al. 2012

Science and Technology of Advanced Materials

183

111

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This review article summarizes recent developments in mesoporous titania materials, particularly in the fields of morphology control and applications. We first briefly introduce the history of mesoporous titania materials and then review several synthesis approaches. Currently, mesoporous titania nanoparticles (MTNs) have attracted much attention in various fields, such as medicine, catalysis, separation and optics. Compared with bulk mesoporous titania materials, which are above a micrometer in size, nanometer-sized MTNs have additional properties, such as fast mass transport, strong adhesion to substrates and good dispersion in solution. However, it has generally been known that the successful synthesis of MTNs is very difficult owing to the rapid hydrolysis of titanium-containing precursors and the crystallization of titania upon thermal treatment. Finally, we review four emerging fields including photocatalysis, photovoltaic devices, sensing and biomedical applications of mesoporous titania materials. Because of its high surface area, controlled porous structure, suitable morphology and semiconducting behavior, mesoporous titania is expected to be used in innovative applications.

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Section: Photovoltaic Applicationsmentioning

confidence: 99%

Recent progress in mesoporous titania materials: adjusting morphology for innovative applications

Vivero‐Escoto

Chiang

et al. 2012

Science and Technology of Advanced Materials

183

111

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“…For high photovoltaic performance of DSSC, there have been significant research efforts to discover the nature of this device, which usually consists of anode electrode materials, sensitized dye, electrolyte, and counter electrode. Because anode electrode materials require nanoscale and highly crystalline semiconductors with large surface area for the adsorption of sensitized dyes, various one-dimensional (1D) nanostructured TiO 2 materials such as nanowire [5], nanorod [6][7][8][9][10], and nanotubes [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] have gained much attention.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, since Uchida et al [17] reported DSSC of low-temperature chemically synthesized TiO 2 NTs with the cell efficiency of 2.9%, most researches have focused on the comparative study of commercial TiO 2 nanoparticles such as P25 and TiO 2 NT [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Influence of the size-controlled TiO2 nanotubes fabricated by low-temperature chemical synthesis on the dye-sensitized solar cell properties

2010

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Titanium dioxide nanotubes (TiO 2 NTs) with various sizes have been prepared by low-temperature chemical synthesis using commercial anatase TiO 2 particles with different crystallite size in NaOH solution and used as a photoelectrode in a dye-sensitized solar cell (DSSC). The relationship between the physicochemical properties of electrode materials and photovoltaic performance was investigated. The electrodes made from modified TiO 2 NTs showed a strong dependency on their specific surface area and resultant amount of dye adsorption; the surface area decreased with increase in the diameter of the NT from 9.8 to 23.6 nm. The conversion efficiency of the cell made from TiO 2 NT, 12.9 nm in diameter, was enhanced by 12% compared to that of the smallest NT. These results suggested that the photovoltaic performance improved by the suppression of photogenerated charge recombination in spite of a 25.3% reduction in the specific surface area. In addition, larger TiO 2 NTs could be utilized as a scattering layer on the top of the TiO 2 nanoparticulate working electrode. It was observed that this controlled TiO 2 photoelectrode architecture exhibited enhanced conversion efficiency without TiCl 4 treatment.

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“…In addition, often results on a systematic control of the surface nanostructure are missing. For example, several studies on the preparation of titania nanotubes has been published [14][15][16][17][18][19][20][21][22][23][24][25], but often a more specific correlation between the nanostructure and synthesis parameters is missing.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of TiO2 Thin Films: Relationship Between Preparation Conditions and Nanostructure

et al. 2008

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The influence of the synthesis conditions (pH, HF concentration, procedure of application of the voltage) during the anodization of Ti foils to produce TiO 2 thin films characterized by an ordered arrays of 1D nanostructures (nanorods, nanotubes) is discussed. Different types of 1D nanostructures could be obtained by changing the procedure of synthesis, as shown by field emission scanning electron microscopy images. The analysis of the current versus time curves during the procedure of synthesis provides indications on the sequence of processes occurring during the synthesis. It is also suggested that different growing mechanisms occur depending on the preparation, leading in turn to the different type of nanostructures observed. The relevance of this preparation method is related to the analysis of the relationship for oxide materials between nano-architecture and reactivity and gives the opportunity to prepare materials with an intermediate degree of complexity between model and applied catalysts.

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HYDROTHERMAL SYNTHESIS OF TiO₂ NANOTUBE / NANOWIRE AND THEIR APPLICATION FOR DYE-SENSITIZED SOLAR CELL

Cited by 28 publications

References 0 publications

Recent progress in mesoporous titania materials: adjusting morphology for innovative applications

Recent progress in mesoporous titania materials: adjusting morphology for innovative applications

Influence of the size-controlled TiO2 nanotubes fabricated by low-temperature chemical synthesis on the dye-sensitized solar cell properties

Synthesis of TiO2 Thin Films: Relationship Between Preparation Conditions and Nanostructure

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HYDROTHERMAL SYNTHESIS OF TiO2 NANOTUBE / NANOWIRE AND THEIR APPLICATION FOR DYE-SENSITIZED SOLAR CELL

Cited by 28 publications

References 0 publications

Recent progress in mesoporous titania materials: adjusting morphology for innovative applications

Recent progress in mesoporous titania materials: adjusting morphology for innovative applications

Influence of the size-controlled TiO2 nanotubes fabricated by low-temperature chemical synthesis on the dye-sensitized solar cell properties

Synthesis of TiO2 Thin Films: Relationship Between Preparation Conditions and Nanostructure

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HYDROTHERMAL SYNTHESIS OF TiO₂ NANOTUBE / NANOWIRE AND THEIR APPLICATION FOR DYE-SENSITIZED SOLAR CELL