Abstract
Fine particles of TiB2, ZrB2, and HfB2 were prepared by metallothermic reduction (MTR) of their oxides with Mg. As a result, we found that theory of function-building fine particle preparation was able to be applied to synthesize nano-atomized fine particles of borides. ZrB2 can also be obtained directly from mixture of ZrSiO4, B2O3, and Mg by MTR method. This sample has no borides such as silicon boride except for ZrB2. Therefore, this result shows the possibility to obtain ZrB2 easily from natural source. On the other hand, B doped TiO2 samples were prepared by the calcination of TiB2 in the air condition and MTR method. As a result, we could effectively dope B atoms to TiO2 samples by this method. These samples also show the photocatalytic activity for the oxidation of 2-propanol even under the visible-light irradiation.
| Original language | English |
|---|---|
| Pages (from-to) | 251-259 |
| Number of pages | 9 |
| Journal | Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy |
| Volume | 54 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2007 |
| Externally published | Yes |
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Keywords
- Function-building fine particle preparation
- Metallothermic reduction
- Photocatalyst
ASJC Scopus subject areas
- Mechanical Engineering
- Metals and Alloys
Cite this
Preparation of hard nanoceramics of borides and functionalization of titania by metallothermic reduction method. / Ohkubo, Takahiro; Sakai, Hideki; Abe, Masahiko; Nishiyama, Katsuhiro.
In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 54, No. 4, 04.2007, p. 251-259.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Preparation of hard nanoceramics of borides and functionalization of titania by metallothermic reduction method
AU - Ohkubo, Takahiro
AU - Sakai, Hideki
AU - Abe, Masahiko
AU - Nishiyama, Katsuhiro
PY - 2007/4
Y1 - 2007/4
N2 - Fine particles of TiB2, ZrB2, and HfB2 were prepared by metallothermic reduction (MTR) of their oxides with Mg. As a result, we found that theory of function-building fine particle preparation was able to be applied to synthesize nano-atomized fine particles of borides. ZrB2 can also be obtained directly from mixture of ZrSiO4, B2O3, and Mg by MTR method. This sample has no borides such as silicon boride except for ZrB2. Therefore, this result shows the possibility to obtain ZrB2 easily from natural source. On the other hand, B doped TiO2 samples were prepared by the calcination of TiB2 in the air condition and MTR method. As a result, we could effectively dope B atoms to TiO2 samples by this method. These samples also show the photocatalytic activity for the oxidation of 2-propanol even under the visible-light irradiation.
AB - Fine particles of TiB2, ZrB2, and HfB2 were prepared by metallothermic reduction (MTR) of their oxides with Mg. As a result, we found that theory of function-building fine particle preparation was able to be applied to synthesize nano-atomized fine particles of borides. ZrB2 can also be obtained directly from mixture of ZrSiO4, B2O3, and Mg by MTR method. This sample has no borides such as silicon boride except for ZrB2. Therefore, this result shows the possibility to obtain ZrB2 easily from natural source. On the other hand, B doped TiO2 samples were prepared by the calcination of TiB2 in the air condition and MTR method. As a result, we could effectively dope B atoms to TiO2 samples by this method. These samples also show the photocatalytic activity for the oxidation of 2-propanol even under the visible-light irradiation.
KW - Function-building fine particle preparation
KW - Metallothermic reduction
KW - Photocatalyst
UR - http://www.scopus.com/inward/record.url?scp=34547379281&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547379281&partnerID=8YFLogxK
U2 - 10.2497/jjspm.54.251
DO - 10.2497/jjspm.54.251
M3 - Article
AN - SCOPUS:34547379281
VL - 54
SP - 251
EP - 259
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 4
ER -