Application of optical-fiber photoreactor for CO2 photocatalytic reduction

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)131-136
Journal / PublicationTopics in Catalysis
Volume47
Issue number3-4
Publication statusPublished - Apr 2008
Externally publishedYes

Abstract

An optical-fiber photoreactor, comprised of 216 xcatalyst-coated fibers, was designed and assembled to transmit and spread light uniformly inside the reactor. The power loss of light transmission inside an optical fiber was calculated using beam propagation method. The optimum length of optical fiber was estimated to be near 11 cm long in order to entirely spread out light energy over surface catalyst. Vapor-phase CO2 was photocatalytically reduced to methanol using the photoreactor under UV irradiation in a steady-state flow system. The solutions of metal-loaded titania were prepared by thermal hydrolysis method. Metal-loaded TiO2 film was coated on optical fibers by dip-coating method. TiO2, Cu/TiO2 and Ag/TiO2 films were uniformly on the fibers and their thicknesses ranged from 27 to 33 nm. The films consisted of very fine spherical particles with diameters of 10-20 nm. The XRD spectra indicated anatase phase for all films. Methanol yield increased with UV irradiative intensity. Maximum methanol rate was 4.12 μmole/g-cat h using 1.0 wt%-Ag/TiO2 catalyst at 1.13 bar of CO2, 0.03 bar of H2O pressures, and 5,000 s mean residence time under 10 W/cm2 UV irradiation. © Springer Science+Business Media, LLC 2008.

Research Area(s)

  • CO2 conversion, Optical-fiber photoreactor, Photocatalysis, Renewable energy

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Application of optical-fiber photoreactor for CO2 photocatalytic reduction. / Wu, Jeffrey C. S.; Wu, Tzu-Hua; Chu, Taichi et al.
In: Topics in Catalysis, Vol. 47, No. 3-4, 04.2008, p. 131-136.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review