Abstract
The photocatalytic activity of a nanostrcutured rutile consisting of oriented nanoneedles was studied by comparing a reaction of a thiazin dye, methylene blue, with dispersed rutile nanoneedles and anatase nanoparticles. Demethylation of methylene blue occurred preferably through partial oxidation under UV irradiation with the bundled rutile nanoneedles having small clearance gaps. On the other hand, most of the dye molecules were directly decolorized through the initiation by a reductive pathway with the dispersed rutile nanorods and the anatase nanoparticles. The reductive sites on (110) of the rutile nanoneedles were dominantly located in the small gaps inside the bundled architecture. Because the diffusion of large-sized organic molecules to the reductive sites would be restricted, the oxidative route for the dye molecule was selectively induced with the rutile bundles under UV irradiation.
| Original language | English |
|---|---|
| Pages (from-to) | 69-73 |
| Number of pages | 5 |
| Journal | Science of Advanced Materials |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2010 Mar |
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Keywords
- Anatase
- Methylene blue
- Photocatalyst
- Rutile
- Titania
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Specific photocatalytic performance of nanostructured rutile-type Tio2 : Selective oxidation of thiazin dye with a bundled architecture consisting of oriented nanoneedles. / Tokunaga, Yu; Uchiyama, Hiroaki; Oaki, Yuya; Imai, Hiroaki.
In: Science of Advanced Materials, Vol. 2, No. 1, 03.2010, p. 69-73.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Specific photocatalytic performance of nanostructured rutile-type Tio2
T2 - Selective oxidation of thiazin dye with a bundled architecture consisting of oriented nanoneedles
AU - Tokunaga, Yu
AU - Uchiyama, Hiroaki
AU - Oaki, Yuya
AU - Imai, Hiroaki
PY - 2010/3
Y1 - 2010/3
N2 - The photocatalytic activity of a nanostrcutured rutile consisting of oriented nanoneedles was studied by comparing a reaction of a thiazin dye, methylene blue, with dispersed rutile nanoneedles and anatase nanoparticles. Demethylation of methylene blue occurred preferably through partial oxidation under UV irradiation with the bundled rutile nanoneedles having small clearance gaps. On the other hand, most of the dye molecules were directly decolorized through the initiation by a reductive pathway with the dispersed rutile nanorods and the anatase nanoparticles. The reductive sites on (110) of the rutile nanoneedles were dominantly located in the small gaps inside the bundled architecture. Because the diffusion of large-sized organic molecules to the reductive sites would be restricted, the oxidative route for the dye molecule was selectively induced with the rutile bundles under UV irradiation.
AB - The photocatalytic activity of a nanostrcutured rutile consisting of oriented nanoneedles was studied by comparing a reaction of a thiazin dye, methylene blue, with dispersed rutile nanoneedles and anatase nanoparticles. Demethylation of methylene blue occurred preferably through partial oxidation under UV irradiation with the bundled rutile nanoneedles having small clearance gaps. On the other hand, most of the dye molecules were directly decolorized through the initiation by a reductive pathway with the dispersed rutile nanorods and the anatase nanoparticles. The reductive sites on (110) of the rutile nanoneedles were dominantly located in the small gaps inside the bundled architecture. Because the diffusion of large-sized organic molecules to the reductive sites would be restricted, the oxidative route for the dye molecule was selectively induced with the rutile bundles under UV irradiation.
KW - Anatase
KW - Methylene blue
KW - Photocatalyst
KW - Rutile
KW - Titania
UR - http://www.scopus.com/inward/record.url?scp=78650338389&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650338389&partnerID=8YFLogxK
U2 - 10.1166/sam.2010.1078
DO - 10.1166/sam.2010.1078
M3 - Article
VL - 2
SP - 69
EP - 73
JO - Science of Advanced Materials
JF - Science of Advanced Materials
SN - 1947-2935
IS - 1
ER -