A novel synthetic route to TiO2-pillared layered titanate with enhanced photocatalytic activity

Choy, Jin‐Ho; Lee, Hyun-Cheol; Jung, Hyunseung; Hwang, Seong-Ju

doi:10.1039/b104551m

Cited by 117 publications

(65 citation statements)

References 14 publications

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“…Table 1 22,23,30,31,53,54 within the layered NH film, which results in an increase in electron density in TiO2, and thus the shift of Fermi level. 55 As evidenced above, the large surface area makes it accessible for more dye-adsorption, and the light scattering effect of the re-assembled exfoliated titanates favour enhanced light-harvesting efficiency by increasing the optical length serving as light-scattering shield, and thereby enhanced Jsc for the cell with the layered NH film.…”

Section: Photocurrent Density-voltage ( J-v) Characteristicsmentioning

confidence: 99%

Porous Titania Nanosheet/Nanoparticle Hybrids as Photoanodes for Dye-Sensitized Solar Cells

Bai

Zheng

et al. 2013

ACS Appl. Mater. Interfaces

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Porous titania nanohybrids (NHs) were successfully prepared by hybridizing the exfoliated titania nanosheets with anatase TiO2 nanoparticles. Various characterizations revealed that the titania NHs as photoanodes play a trifunctional role (light harvesting, dye adsorption, and electron transfer) in improving the efficiency (η) of the dye-sensitized solar cells. The optimized photoanode consisting layered NHs demonstrated a high overall conversion efficiency of 10.1%, remarkably enhanced by 29.5% compared to that (7.8%) obtained from the benchmark P25 nanoparticles under the same testing conditions. ABSTRACT: Porous titania nanohybrids (NHs) were successfully prepared by hybridizing the exfoliated titanate nanosheets with the anatase TiO2 nanoparticles. Various characterizations revealed that the titania NHs as photoanodes play a tri-functional role (light harvesting, dye-adsorption and electron transfer) in improving the efficiency (η) of the DSSCs. The optimized photoanode consisting layered NHs demonstrated a high overall conversion efficiency of 10.1%, remarkably enhanced by 29.5% compared to that (7.8%) obtained from the benchmark P25 nanoparticles under the same testing conditions.

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Section: Photocurrent Density-voltage ( J-v) Characteristicsmentioning

confidence: 99%

Porous Titania Nanosheet/Nanoparticle Hybrids as Photoanodes for Dye-Sensitized Solar Cells

Bai

Zheng

et al. 2013

ACS Appl. Mater. Interfaces

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“…Several strategies have been explored to extend the optical absorption of TiO 2 into the visible light region including doping of metal or nonmetal ions, dye sensitization, surface modification, and coupling with narrow bandgap semiconductors [1][2][3][4][5][6][7][8]. Among these, a remarkable enhancement in the photoelectrochemical (PEC) performance of TiO 2 under light has been obtained by coupling low bandgap semiconductors such as CdS [4], CdSe [5], Ag 2 S [6], Sb 2 S 3 [7], and Bi 2 S 3 [8].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of titanium dioxide (TiO2) and mercury sulfide (HgS) heterojunction for photoelectrochemical study

Wagh

Kulkarni

Baviskar

et al. 2018

Mater Renew Sustain Energy

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This work reports a chemical solution sensitization of HgS nanocrystals on mesoporous TiO 2 films for different deposition times. The adsorption of the precursor ions and the surface growth of the crystal were found to be affected during the temporal deposition of the HgS over spin-coated TiO 2 films. The synthesized electrodes were characterized by structural, morphological, wettability, optical, photovoltaic, and electrochemical performances. The results designate the qualitative confirmation of the TiO 2 /HgS heterojunction formation, and the combination is explored for the photovoltaic application, which is first of its kind.

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“…It is therefore of great significance to adjust the band structure of photocatalysts to improve its photocatalytic efficiency towards the utilization of solar energy. Various attempts such as dye sensitization, coupling with different semiconductors, and doping with metals or nonmetals are performed to modify the bandgap of semiconducting photocatalysts [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Cobalt-doped ZnS-reduced graphene oxide nanocomposite as an advanced photocatalytic material

et al. 2014

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The removal of toxic organic pollutants from wastewater by graphene-based photocatalysts has dominated recent scientific research. As a result numerous nanomaterials have been studied and used for water remediation. ZnS has been widely studied due to its versatile application in photocatalysis. This study presents the synthesis of Co-doped graphene-ZnS nanocomposite by co-precipitation method. The materials were characterized by X-ray diffraction , Raman spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and Brunauer-EmmettTeller surface area analysis. UV/Vis diffuse reflectance spectroscopy was employed to estimate band gap energies. Laboratory experiments with indigo carmine (IC) dye was chosen as a model for organic pollutants and was used to evaluate the photocatalytic performance of Co-doped ZnS-rGO nanocomposite under visible light. The Co-doped ZnS-rGO showed significant visible light induced photocatalytic activity towards the degradation of IC. Highest photocatalytic activity was observed for the 0.3 % Co-doped ZnS-rGO sample (k = 3.1 9 10 -2 min -1 ).

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A novel synthetic route to TiO2-pillared layered titanate with enhanced photocatalytic activity

Abstract: A novel pillaring procedure has been developed to prepare TiO 2 -pillared layered titanate with large surface area, high thermal stability, and enhanced photocatalytic activity.

Cited by 117 publications

References 14 publications

Porous Titania Nanosheet/Nanoparticle Hybrids as Photoanodes for Dye-Sensitized Solar Cells

Porous Titania Nanosheet/Nanoparticle Hybrids as Photoanodes for Dye-Sensitized Solar Cells

Fabrication of titanium dioxide (TiO2) and mercury sulfide (HgS) heterojunction for photoelectrochemical study

Cobalt-doped ZnS-reduced graphene oxide nanocomposite as an advanced photocatalytic material

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