Hydrothermal synthesis, characterization, photocatalytic activity and dye-sensitized solar cell performance of mesoporous anatase TiO{sub 2} nanopowders

Journal Article · Tue Jan 08 00:00:00 EST 2008 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2007.02.028· OSTI ID:21068179

Pavasupree, Sorapong ^[1]; Jitputti, Jaturong; Ngamsinlapasathian, Supachai ^[1]; Yoshikawa, Susumu ^[1]

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1. Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011 (Japan)

Mesoporous anatase TiO{sub 2} nanopowder was synthesized by hydrothermal method at 130 deg. C for 12 h. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected-area electron diffraction (SAED), HRTEM, and Brunauer-Emmett-Teller (BET) surface area. The as-synthesized sample with narrow pore size distribution had average pore diameter about 3-4 nm. The specific BET surface area of the as-synthesized sample was about 193 m{sup 2}/g. Mesoporous anatase TiO{sub 2} nanopowders (prepared by this study) showed higher photocatalytic activity than the nanorods TiO{sub 2}, nanofibers TiO{sub 2} mesoporous TiO{sub 2}, and commercial TiO{sub 2} nanoparticles (P-25, JRC-01, and JRC-03). The solar energy conversion efficiency ({eta}) of the cell using the mesoporous anatase TiO{sub 2} was about 6.30% with the short-circuit current density (Jsc) of 13.28 mA/cm{sup 2}, the open-circuit voltage (Voc) of 0.702 V and the fill factor (ff) of 0.676; while {eta} of the cell using P-25 reached 5.82% with Jsc of 12.74 mA/cm{sup 2}, Voc of 0.704 V and ff of 0.649.

• OSTI ID: 21068179
• Journal Information: Materials Research Bulletin, Vol. 43, Issue 1; Other Information: DOI: 10.1016/j.materresbull.2007.02.028; PII: S0025-5408(07)00057-8; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
DYES
ELECTRON DIFFRACTION
FILL FACTORS
HYDROTHERMAL SYNTHESIS
NANOSTRUCTURES
PERFORMANCE
PHOTOCATALYSIS
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
SOLAR CELLS
SOLAR ENERGY CONVERSION
SURFACE AREA
TEMPERATURE RANGE 0400-1000 K
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION