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Cited by 308

The DOI matches its Crossref record; 58 of the 58 references it cites were found in a registry or an index.

Photochemical Reduction of CO2 Using TiO2: Effects of Organic Adsorbates on TiO2 and Deposition of Pd onto TiO2

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Yui, Tatsuto, Kan, Akira, Saitoh, Chieko, Koike, Kazuhide, Ibusuki, Takashi, Ishitani, Osamu·2011·ACS Applied Materials & Interfaces

Abstract

Reduction of CO(2) using semiconductors as photocatalysts has recently attracted a great deal of attention again. The effects of organic adsorbates on semiconductors on the photocatalytic products are noteworthy. On untreated TiO(2) (P-25) particles a considerable number of organic molecules such as acetic acid were adsorbed. Although irradiation of an aqueous suspension of this TiO(2) resulted in the formation of a significant amount of CH(4) as a major product, it was strongly suggested that its formation mainly proceeded via the photo-Kolbe reaction of acetic acid. Using TiO(2) treated by calcination and washing procedures for removal of the organic adsorbates, CO was photocatalytically generated as a major product, along with a very small amount of CH(4), from an aqueous suspension under a CO(2) atmosphere. In contrast, by using Pd (>0.5 wt %) deposited on TiO(2) (Pd-TiO(2)) on which organic adsorbates were not detected, CH(4) was the main product, but CO formation was drastically reduced compared with that on the pretreated TiO(2). Experimental data, including isotope labeling, indicated that CO(2) and CO(3)(2-) are the main carbon sources of the CH(4) formation, which proceeds on the Pd site of Pd-TiO(2). Prolonged irradiation caused deactivation of the photocatalysis of Pd-TiO(2) because of the partial oxidation of the deposited Pd to PdO.

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Metadata

Authors
Yui, T., Kan, A., Saitoh, C., Koike, K., Ibusuki, T., & Ishitani, O.
Venue
ACS Applied Materials & Interfaces
Published
2011-06-21
Volume
3
Issue
7
Pages
2594-2600
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
OpenAlex
W2323604837
Cited by
308
References
58
FWCI
9.59
Type
journal article
Language
en
Open access
hybrid

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