Abstract
In this paper, the photocatalytic activity of nitrogen-doped TiO2/montmorillonite composite (NTM) was successfully enhanced by modification with carbon. NTM was made by mixing a swelling clay solution with an N-doped TiO2 solution prepared by hydrolysis of titanium tetraisopropoxide with urea. Carbon-modified Ndoped TiO2/montmorillonite composite (CNTM) was obtained by grinding the dried NTM with EtOH for 1 h, followed by calcination at 250°C in the air for 2 h. Both NTM and CNTM exhibited visible light absorption in the UVvis spectrum in the same way as commercial NTiO2 powder. Additionally, CNTM greatly extended the absorption edges to the visible light region. The photocatalytic performance of NTM and CNTM was evaluated using a degradation of bisphenol-A under visible light (>420 nm) radiation. Although the commercial TiO2 powder showed less photocatalytic activity under visible light radiation, NTM, CNTM and commercial NTiO2 powder showed high photocatalytic activity. The order of degradation performance was as follows: CNTM > commercial NTiO2 powder > NTM. Since the TiO2 content of CNTM is ca. 30 mass% by energy dispersive spectrum analysis, it was suggested that CNTM has extremely high visible light activity.
| Original language | English |
|---|---|
| Pages (from-to) | 230-235 |
| Number of pages | 6 |
| Journal | Journal of the Ceramic Society of Japan |
| Volume | 126 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 1 2018 |
Fingerprint
Keywords
- Bisphenol-A
- Carbon modifying
- Photocatalytic activity
- TiO pillared clay
- Visible light response
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
Preparation of carbon-modified NTiO2/ montmorillonite composite with high photocatalytic activity under visible light radiation. / Hsing, Jiannan; Kameshima, Yoshikazu; Nishimoto, Shunsuke; Miyake, Michihiro.
In: Journal of the Ceramic Society of Japan, Vol. 126, No. 4, 01.04.2018, p. 230-235.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Preparation of carbon-modified NTiO2/ montmorillonite composite with high photocatalytic activity under visible light radiation
AU - Hsing, Jiannan
AU - Kameshima, Yoshikazu
AU - Nishimoto, Shunsuke
AU - Miyake, Michihiro
PY - 2018/4/1
Y1 - 2018/4/1
N2 - In this paper, the photocatalytic activity of nitrogen-doped TiO2/montmorillonite composite (NTM) was successfully enhanced by modification with carbon. NTM was made by mixing a swelling clay solution with an N-doped TiO2 solution prepared by hydrolysis of titanium tetraisopropoxide with urea. Carbon-modified Ndoped TiO2/montmorillonite composite (CNTM) was obtained by grinding the dried NTM with EtOH for 1 h, followed by calcination at 250°C in the air for 2 h. Both NTM and CNTM exhibited visible light absorption in the UVvis spectrum in the same way as commercial NTiO2 powder. Additionally, CNTM greatly extended the absorption edges to the visible light region. The photocatalytic performance of NTM and CNTM was evaluated using a degradation of bisphenol-A under visible light (>420 nm) radiation. Although the commercial TiO2 powder showed less photocatalytic activity under visible light radiation, NTM, CNTM and commercial NTiO2 powder showed high photocatalytic activity. The order of degradation performance was as follows: CNTM > commercial NTiO2 powder > NTM. Since the TiO2 content of CNTM is ca. 30 mass% by energy dispersive spectrum analysis, it was suggested that CNTM has extremely high visible light activity.
AB - In this paper, the photocatalytic activity of nitrogen-doped TiO2/montmorillonite composite (NTM) was successfully enhanced by modification with carbon. NTM was made by mixing a swelling clay solution with an N-doped TiO2 solution prepared by hydrolysis of titanium tetraisopropoxide with urea. Carbon-modified Ndoped TiO2/montmorillonite composite (CNTM) was obtained by grinding the dried NTM with EtOH for 1 h, followed by calcination at 250°C in the air for 2 h. Both NTM and CNTM exhibited visible light absorption in the UVvis spectrum in the same way as commercial NTiO2 powder. Additionally, CNTM greatly extended the absorption edges to the visible light region. The photocatalytic performance of NTM and CNTM was evaluated using a degradation of bisphenol-A under visible light (>420 nm) radiation. Although the commercial TiO2 powder showed less photocatalytic activity under visible light radiation, NTM, CNTM and commercial NTiO2 powder showed high photocatalytic activity. The order of degradation performance was as follows: CNTM > commercial NTiO2 powder > NTM. Since the TiO2 content of CNTM is ca. 30 mass% by energy dispersive spectrum analysis, it was suggested that CNTM has extremely high visible light activity.
KW - Bisphenol-A
KW - Carbon modifying
KW - Photocatalytic activity
KW - TiO pillared clay
KW - Visible light response
UR - http://www.scopus.com/inward/record.url?scp=85044938204&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85044938204&partnerID=8YFLogxK
U2 - 10.2109/jcersj2.17235
DO - 10.2109/jcersj2.17235
M3 - Article
AN - SCOPUS:85044938204
VL - 126
SP - 230
EP - 235
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 4
ER -