Preparation of carbon-modified NTiO2/ montmorillonite composite with high photocatalytic activity under visible light radiation

Jiannan Hsing, Yoshikazu Kameshima, Shunsuke Nishimoto, Michihiro Miyake

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)230-235
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume126
Issue number4
DOIs
Publication statusPublished - Apr 1 2018

Fingerprint

Bentonite
montmorillonite
Clay minerals
Carbon
Radiation
preparation
composite materials
carbon
Composite materials
Nitrogen
nitrogen
Powders
degradation
Degradation
bisphenols
grinding
electromagnetic absorption

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

@article{bce1f210a2504cc1a6b19531ba7cc6b2,
title = "Preparation of carbon-modified NTiO2/ montmorillonite composite with high photocatalytic activity under visible light radiation",
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.",
keywords = "Bisphenol-A, Carbon modifying, Photocatalytic activity, TiO pillared clay, Visible light response",
author = "Jiannan Hsing and Yoshikazu Kameshima and Shunsuke Nishimoto and Michihiro Miyake",
year = "2018",
month = "4",
day = "1",
doi = "10.2109/jcersj2.17235",
language = "English",
volume = "126",
pages = "230--235",
journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",
issn = "1882-0743",
publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",
number = "4",

}

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 -