Preparation of highly porous TiO2 nanofibers for dye-sensitized solar cells (DSSCs) by electro-spinning

Jung, Won Ho; Kwak, Noh-Seok; Hwang, Taek Sung; Yi, Kwangkeun

doi:10.1016/j.apsusc.2012.08.012

Cited by 59 publications

(23 citation statements)

References 29 publications

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“…DSSC with photoanode based TiO2 nanotubes have higher shortcircuit current density (Jsc of 7.15 mA/cm 2 ) with device efficiency around η=3.80%. Jung et al (2012) have synthesized anatase TiO2 nanofibers with a thickness of 80-150 nm, specific surface area of 103.3 m 2 /g with porosity of 80.5% and were able to obtain an efficiency of 4.6%, which was significantly higher than that of the typical TiO2 nanofibers. Nair et al (2012) reported highly porous, dense, and anisotropic TiO2 derived from electrospun TiO2-SiO2 nanostructures through titanate route.…”

Section: Tablementioning

confidence: 99%

Perspective of electrospun nanofibers in energy and environment

Jayaraman¹,

Li²,

Kumar³

et al. 2014

Biofuel Res. J.

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HIGHLIGHTSElectrospinning is a simple, continuous and scalable technique to produce polymer composite and metal oxide nanofibers with high-aspect ratio and controlled morphologies. It possesses the added advantage of synthesizing porous, hollow and core/shell nanofibers with combination of additional polymers, metals and metal oxides for potential applications. This review focusses on the impact and role of electrospun nanofibers in improving the performances of DSSCs, photocatalysis and hydrogen generation & storage. This review summarizes the recent developments of electrospun semiconducting metal oxide/polymer composite nanostructures in energy and environment related applications. Electrospinning technique has the advantage of synthesizing nanostructures with larger surface to volume ratio, higher crystallinity with phase purity and tunable morphologies like nanofibers, nanowires, nanoflowers and nanorods. The electrospun nanostructures have exhibited unique electrical, optical and catalytic properties than the bulk counter parts as well as nanomaterials synthesized through other approaches. These nanostructures have improved diffusion and interaction of molecules, transfer of electrons along the matrix and catalytic properties with further surface modification and functionalization with combination of metals and metal oxides. GRAPHICAL ABSTRACT ARTICLE INFO ABSTRACT

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Section: Tablementioning

confidence: 99%

Perspective of electrospun nanofibers in energy and environment

Jayaraman¹,

Li²,

Kumar³

et al. 2014

Biofuel Res. J.

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“…This causes rapid evaporation of the solvent, which contribute in the fiber size reduction [18]. However, discontinuity in nanofibers occurs when the supplied voltage exceeded 20 kV, causing the occurrence of over pulling effect with the fiber breakage [13,[31][32]. Thus, to fabricate a continuous smaller fibers, the supplied voltage should be within 15-20 kV.…”

Section: Supplied Voltagementioning

confidence: 99%

“…To date, TiO 2 nanofibers are prepared by using crystallize growing method and electrospinning. Crystallize growing method takes a Corresponding author : nurmin@ums.edu.my extremely long growing time and does not produce uniform fibers [13]. Hence, electrospinning has engrossed the attention of the researchers.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, rutile TiO2 is thermodynamically more stable, and due to the low intrinsic photocatalytic activity with lower band gap (3.0 eV), it can be applied in the cosmetic field and tissue engineering [9][10][11][12]. One dimensional nanoarchitectures TiO 2 offers faster electron transportation rate, high porosity and larger surface [13]. One dimensional nanostructures TiO 2 such as whiskers, rods, tubes, wires, belts, spirals and fibers have been produced by sol-gel synthesis, electrochemical fabrication, dip-coating, hydrothermal technique, electroless deposition, crystallize growing method and electrospinning [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…One dimensional nanoarchitectures TiO 2 offers faster electron transportation rate, high porosity and larger surface [13]. One dimensional nanostructures TiO 2 such as whiskers, rods, tubes, wires, belts, spirals and fibers have been produced by sol-gel synthesis, electrochemical fabrication, dip-coating, hydrothermal technique, electroless deposition, crystallize growing method and electrospinning [13][14][15][16]. To date, TiO 2 nanofibers are prepared by using crystallize growing method and electrospinning.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Morphology of Electrospun Titanium Dioxide Nanofibers and Its Influencing Factors

Tang

Bolong

Saad

et al. 2016

MATEC Web of Conferences

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Abstract. Titanium dioxide (TiO2) has high photocatalytic activity and it is extensively applied in solar cell technology and environmental science. Electrospinning is acknowledged as the most versatile technique to fabricate nanofibers such as metal oxide nanofibers. Titanium dioxide nanofibers are generally prepared by electrospinning organic solutions containing alkoxide precursors and a carrier polymer with high voltage supply. The paper discusses on electrospun TiO2 nanofibers including the spin dopes preparation history, influencing factors on fiber morphology and fiber characterizations. In particular, the parameters such as spin dopes viscosity, supplied voltage, feeding rate and effect of temperature that affect the morphology of the nanofibers are emphasized. Based on several studies, smaller diameter of TiO2 nanofibers can be produced with lower viscosity solution, higher voltage and lower feeding rate. The heat treatment of 500 o C reduced the fiber size and produces crystallized anatase TiO2 nanofibers.

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Modification of dye-sensitized solar cell working electrode using TiO₂ nanoparticle/N-doped TiO₂ nanofiber composites

Mekprasart

Suphankij

Tangcharoen

et al. 2014

Phys. Status Solidi A

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Nanocomposite films of N-doped TiO 2 nanofibers (NFs) and commercial-grade TiO 2 nanoparticles Degussa (P25) were utilized as working electrode of typical dye-sensitized solar cells (DSSCs). N-doped TiO 2 NFs were fabricated via electrospinning method using ammonium acetate (CH 3 COONH 4 ) as nitrogen source and titanium (IV) isopropoxide (TiP) in ethanol as starting precursor in combination with calcinations process. The electrospun NFs were characterized by XRD, Raman spectroscopy, XPS, SEM, and TEM. The photoelectric conversion performance of the DSSCs with composite film electrode was compared to the device using pure P25 film. The result shows that as calcination temperature increases, the anatase-to-rutile phase transformation and the fiber size reduction of NFs were observed. The energy conversion efficiency (h) of the device tends to increase with increasing calcined temperature with specific nanofiber loading content, indicating the significant enhancement in the device performance by the incorporation of the NFs. This enhancement of DSSCs may attribute to high surface area, higher light scattering and light harvesting, low charge recombination, and fast electron-transfer rate by loaded NFs.

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Preparation of highly porous TiO2 nanofibers for dye-sensitized solar cells (DSSCs) by electro-spinning

Cited by 59 publications

References 29 publications

Perspective of electrospun nanofibers in energy and environment

Perspective of electrospun nanofibers in energy and environment

The Morphology of Electrospun Titanium Dioxide Nanofibers and Its Influencing Factors

Modification of dye-sensitized solar cell working electrode using TiO₂ nanoparticle/N-doped TiO₂ nanofiber composites

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Preparation of highly porous TiO2 nanofibers for dye-sensitized solar cells (DSSCs) by electro-spinning

Cited by 59 publications

References 29 publications

Perspective of electrospun nanofibers in energy and environment

Perspective of electrospun nanofibers in energy and environment

The Morphology of Electrospun Titanium Dioxide Nanofibers and Its Influencing Factors

Modification of dye-sensitized solar cell working electrode using TiO2 nanoparticle/N-doped TiO2 nanofiber composites

Contact Info

Product

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Modification of dye-sensitized solar cell working electrode using TiO₂ nanoparticle/N-doped TiO₂ nanofiber composites