Effect of Fe Loading Condition and Reductants on CO2 Reduction Performance with Fe/TiO2 Photocatalyst

Fe-doped TiO2 (Fe/TiO2) film photocatalyst was prepared by sol-gel and dip-coating process and pulse arc plasma method. The effect of pulse number on the CO2 reduction performance with the Fe/TiO2 was investigated in this study. In addition, the effect of reductants such as H2O, H2, and NH3/H2O on t...

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Published inInternational journal of photoenergy Vol. 2017; no. 2017; pp. 1 - 11
Main Authors Hu, Eric, Koshio, Akira, Hirota, Masafumi, Tatematsu, Daichi, Ishida, Noriaki, Nishimura, Akira, Kokai, Fumio
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Publishing Corporation 01.01.2017
Hindawi
Hindawi Limited
Subjects
Carbon dioxide
Catalysis
Coating effects
Dip coatings
Engineering schools
Environmental impact
Glass fibers
Illumination
Immersion coating
Iron
Mechanical engineering
Photocatalysis
Photocatalysts
Physical chemistry
Reduction
Sol-gel processes
Solar energy
Studies
Titanium dioxide
Titanium oxides
Ultraviolet radiation
Japan
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Summary:Fe-doped TiO2 (Fe/TiO2) film photocatalyst was prepared by sol-gel and dip-coating process and pulse arc plasma method. The effect of pulse number on the CO2 reduction performance with the Fe/TiO2 was investigated in this study. In addition, the effect of reductants such as H2O, H2, and NH3/H2O on the CO2 reduction performance with the Fe/TiO2 photocatalyst was also investigated. The characteristics of the prepared Fe/TiO2 film coated on a netlike glass fiber which is a base material were analyzed by SEM, EPMA, EDX, and EPMA. Furthermore, the CO2 reduction performance of the Fe/TiO2 film was tested under a Xe lamp with or without ultraviolet (UV) light. The results show that the CO2 reduction performance with the pulse number of 100 is the best with H2O and/or H2 as reductant under UV light illumination, while that with the pulse number of 500 is the best when NH3/H2O is used as reductant. On the other hand, the CO2 reduction performance with the pulse number of 500 is the best under every reductant condition without UV light illumination. The highest CO2 reduction performance with the Fe/TiO2 is obtained under H2 + H2O/CO2 condition, and the best moral ratio of total reductants to CO2 is 1.5 : 1.
ISSN:1110-662X
1687-529X
DOI:10.1155/2017/1625274