Preparation of TiO2 hollow spheres for DSSC photoanodes

Chang Yu Liao; Shih Ting Wang; Fang Chih Chang; H. Paul Wang; Hong Ping Lin

doi:10.1016/j.jpcs.2013.08.005

Preparation of TiO₂ hollow spheres for DSSC photoanodes

Chang Yu Liao, Shih Ting Wang, Fang Chih Chang, H. Paul Wang, Hong Ping Lin

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

High crystallinity mesoporous TiO₂ hollow spheres (MHS-TiO ₂) were prepared using the mesoporous carbon hollow sphere template. The MHS-TiO₂ contains mainly nanostructured anatase. The mesopore of the MHS-TiO₂ has a pore opening in the range of 400-600 nm. The refined extended X-ray absorption fine structure spectra indicate that the MHS-TiO₂ possesses less the 1st-shell Ti-O coordination numbers than the nano-TiO₂. More surface active species (A₂ ((Ti=O)O₄)) on the MHS-TiO₂ are also observed by the component fitted X-ray absorption near edge structure spectroscopy. The MHS-TiO₂ photoanode has a better DSSC conversion efficiency than the nano-TiO₂ one by at least 40%. Note that the N3 dye molecules are accessible to the mesopores of the MHS-TiO₂, and the loading time for N3 can be reduced by at least 70% if compared with those of the nano-TiO ₂.

Original language	English
Pages (from-to)	38-41
Number of pages	4
Journal	Journal of Physics and Chemistry of Solids
Volume	75
Issue number	1
DOIs	https://doi.org/10.1016/j.jpcs.2013.08.005
Publication status	Published - 2014 Jan

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/j.jpcs.2013.08.005

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@article{f7547310ae904fbdbef0ab000e903b15,

title = "Preparation of TiO2 hollow spheres for DSSC photoanodes",

abstract = "High crystallinity mesoporous TiO2 hollow spheres (MHS-TiO 2) were prepared using the mesoporous carbon hollow sphere template. The MHS-TiO2 contains mainly nanostructured anatase. The mesopore of the MHS-TiO2 has a pore opening in the range of 400-600 nm. The refined extended X-ray absorption fine structure spectra indicate that the MHS-TiO2 possesses less the 1st-shell Ti-O coordination numbers than the nano-TiO2. More surface active species (A2 ((Ti=O)O4)) on the MHS-TiO2 are also observed by the component fitted X-ray absorption near edge structure spectroscopy. The MHS-TiO2 photoanode has a better DSSC conversion efficiency than the nano-TiO2 one by at least 40%. Note that the N3 dye molecules are accessible to the mesopores of the MHS-TiO2, and the loading time for N3 can be reduced by at least 70% if compared with those of the nano-TiO 2.",

author = "Liao, {Chang Yu} and Wang, {Shih Ting} and Chang, {Fang Chih} and Wang, {H. Paul} and Lin, {Hong Ping}",

note = "Funding Information: The financial supports of the Taiwan National Science Council, Bureau of Energy and National Synchrotron Radiation Research Center (NSRRC ) are gratefully acknowledged. We also thank Dr. J.-F. Lee of the NSRRC for the experimental assistances in the measurements of EXAFS and XANES spectra.",

year = "2014",

month = jan,

doi = "10.1016/j.jpcs.2013.08.005",

language = "English",

volume = "75",

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journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Limited",

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T1 - Preparation of TiO2 hollow spheres for DSSC photoanodes

AU - Liao, Chang Yu

AU - Wang, Shih Ting

AU - Chang, Fang Chih

AU - Wang, H. Paul

AU - Lin, Hong Ping

N1 - Funding Information: The financial supports of the Taiwan National Science Council, Bureau of Energy and National Synchrotron Radiation Research Center (NSRRC ) are gratefully acknowledged. We also thank Dr. J.-F. Lee of the NSRRC for the experimental assistances in the measurements of EXAFS and XANES spectra.

PY - 2014/1

Y1 - 2014/1

N2 - High crystallinity mesoporous TiO2 hollow spheres (MHS-TiO 2) were prepared using the mesoporous carbon hollow sphere template. The MHS-TiO2 contains mainly nanostructured anatase. The mesopore of the MHS-TiO2 has a pore opening in the range of 400-600 nm. The refined extended X-ray absorption fine structure spectra indicate that the MHS-TiO2 possesses less the 1st-shell Ti-O coordination numbers than the nano-TiO2. More surface active species (A2 ((Ti=O)O4)) on the MHS-TiO2 are also observed by the component fitted X-ray absorption near edge structure spectroscopy. The MHS-TiO2 photoanode has a better DSSC conversion efficiency than the nano-TiO2 one by at least 40%. Note that the N3 dye molecules are accessible to the mesopores of the MHS-TiO2, and the loading time for N3 can be reduced by at least 70% if compared with those of the nano-TiO 2.

AB - High crystallinity mesoporous TiO2 hollow spheres (MHS-TiO 2) were prepared using the mesoporous carbon hollow sphere template. The MHS-TiO2 contains mainly nanostructured anatase. The mesopore of the MHS-TiO2 has a pore opening in the range of 400-600 nm. The refined extended X-ray absorption fine structure spectra indicate that the MHS-TiO2 possesses less the 1st-shell Ti-O coordination numbers than the nano-TiO2. More surface active species (A2 ((Ti=O)O4)) on the MHS-TiO2 are also observed by the component fitted X-ray absorption near edge structure spectroscopy. The MHS-TiO2 photoanode has a better DSSC conversion efficiency than the nano-TiO2 one by at least 40%. Note that the N3 dye molecules are accessible to the mesopores of the MHS-TiO2, and the loading time for N3 can be reduced by at least 70% if compared with those of the nano-TiO 2.

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Preparation of TiO₂ hollow spheres for DSSC photoanodes

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