Nitrogen-doped TiO 2 nanopowders prepared by chemical vapor synthesis: Band structure and photocatalytic activity under visible light

Hyunseock Jie, Ho Bum Lee, Keun Hwa Chae, Moo Young Huh, Masaya Matsuoka, So Hye Cho, Jong Ku Park

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

During chemical vapor synthesis of TiO 2 nanopowders, nitrogen atoms were doped into the crystal lattice of TiO 2. The nitrogen atoms were predominantly incorporated substitutionally in the crystal lattice of TiO 2 nanopowders up to the doping level of 1.25 mol% nitrogen, whereas they were in both interstitial and substitutional sites over about 1.43 mol% nitrogen. From the photocatalytic activity of nitrogen-doped TiO 2 estimated by decomposition of methylene blue under visible light, it was found that the substitutional nitrogen anions appearing at the low level doping was beneficial to its photocatalytic activity, whereas the interstitial ones appearing at the high level doping over 1.25 mol% nitrogen were not. The improved photocatalytic activity due to the substitutionally doped nitrogen was attributed to band gap narrowing which was confirmed by the studies of XPS, near edge X-ray absorption fine structure, and UV-Vis absorption.

Original languageEnglish
Pages (from-to)1171-1180
Number of pages10
JournalResearch on Chemical Intermediates
Volume38
Issue number6
DOIs
Publication statusPublished - 2012 Apr 1

Fingerprint

Band structure
Nitrogen
Thermodynamic properties
Vapors
Doping (additives)
Crystal lattices
Atoms
Methylene Blue
X ray absorption
Anions
Energy gap
X ray photoelectron spectroscopy
Decomposition

Keywords

  • Chemical vapor synthesis
  • Methylene blue degradation
  • Nitrogen doping
  • TiO nanopowders
  • Visible light photocatalysis

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Nitrogen-doped TiO 2 nanopowders prepared by chemical vapor synthesis : Band structure and photocatalytic activity under visible light. / Jie, Hyunseock; Lee, Ho Bum; Chae, Keun Hwa; Huh, Moo Young; Matsuoka, Masaya; Cho, So Hye; Park, Jong Ku.

In: Research on Chemical Intermediates, Vol. 38, No. 6, 01.04.2012, p. 1171-1180.

Research output: Contribution to journalArticle

Jie, Hyunseock ; Lee, Ho Bum ; Chae, Keun Hwa ; Huh, Moo Young ; Matsuoka, Masaya ; Cho, So Hye ; Park, Jong Ku. / Nitrogen-doped TiO 2 nanopowders prepared by chemical vapor synthesis : Band structure and photocatalytic activity under visible light. In: Research on Chemical Intermediates. 2012 ; Vol. 38, No. 6. pp. 1171-1180.
@article{db0ac120c15a4063922ead1d4a41af82,
title = "Nitrogen-doped TiO 2 nanopowders prepared by chemical vapor synthesis: Band structure and photocatalytic activity under visible light",
abstract = "During chemical vapor synthesis of TiO 2 nanopowders, nitrogen atoms were doped into the crystal lattice of TiO 2. The nitrogen atoms were predominantly incorporated substitutionally in the crystal lattice of TiO 2 nanopowders up to the doping level of 1.25 mol{\%} nitrogen, whereas they were in both interstitial and substitutional sites over about 1.43 mol{\%} nitrogen. From the photocatalytic activity of nitrogen-doped TiO 2 estimated by decomposition of methylene blue under visible light, it was found that the substitutional nitrogen anions appearing at the low level doping was beneficial to its photocatalytic activity, whereas the interstitial ones appearing at the high level doping over 1.25 mol{\%} nitrogen were not. The improved photocatalytic activity due to the substitutionally doped nitrogen was attributed to band gap narrowing which was confirmed by the studies of XPS, near edge X-ray absorption fine structure, and UV-Vis absorption.",
keywords = "Chemical vapor synthesis, Methylene blue degradation, Nitrogen doping, TiO nanopowders, Visible light photocatalysis",
author = "Hyunseock Jie and Lee, {Ho Bum} and Chae, {Keun Hwa} and Huh, {Moo Young} and Masaya Matsuoka and Cho, {So Hye} and Park, {Jong Ku}",
year = "2012",
month = "4",
day = "1",
doi = "10.1007/s11164-011-0456-y",
language = "English",
volume = "38",
pages = "1171--1180",
journal = "Research on Chemical Intermediates",
issn = "0922-6168",
publisher = "Springer Netherlands",
number = "6",

}

TY - JOUR

T1 - Nitrogen-doped TiO 2 nanopowders prepared by chemical vapor synthesis

T2 - Band structure and photocatalytic activity under visible light

AU - Jie, Hyunseock

AU - Lee, Ho Bum

AU - Chae, Keun Hwa

AU - Huh, Moo Young

AU - Matsuoka, Masaya

AU - Cho, So Hye

AU - Park, Jong Ku

PY - 2012/4/1

Y1 - 2012/4/1

N2 - During chemical vapor synthesis of TiO 2 nanopowders, nitrogen atoms were doped into the crystal lattice of TiO 2. The nitrogen atoms were predominantly incorporated substitutionally in the crystal lattice of TiO 2 nanopowders up to the doping level of 1.25 mol% nitrogen, whereas they were in both interstitial and substitutional sites over about 1.43 mol% nitrogen. From the photocatalytic activity of nitrogen-doped TiO 2 estimated by decomposition of methylene blue under visible light, it was found that the substitutional nitrogen anions appearing at the low level doping was beneficial to its photocatalytic activity, whereas the interstitial ones appearing at the high level doping over 1.25 mol% nitrogen were not. The improved photocatalytic activity due to the substitutionally doped nitrogen was attributed to band gap narrowing which was confirmed by the studies of XPS, near edge X-ray absorption fine structure, and UV-Vis absorption.

AB - During chemical vapor synthesis of TiO 2 nanopowders, nitrogen atoms were doped into the crystal lattice of TiO 2. The nitrogen atoms were predominantly incorporated substitutionally in the crystal lattice of TiO 2 nanopowders up to the doping level of 1.25 mol% nitrogen, whereas they were in both interstitial and substitutional sites over about 1.43 mol% nitrogen. From the photocatalytic activity of nitrogen-doped TiO 2 estimated by decomposition of methylene blue under visible light, it was found that the substitutional nitrogen anions appearing at the low level doping was beneficial to its photocatalytic activity, whereas the interstitial ones appearing at the high level doping over 1.25 mol% nitrogen were not. The improved photocatalytic activity due to the substitutionally doped nitrogen was attributed to band gap narrowing which was confirmed by the studies of XPS, near edge X-ray absorption fine structure, and UV-Vis absorption.

KW - Chemical vapor synthesis

KW - Methylene blue degradation

KW - Nitrogen doping

KW - TiO nanopowders

KW - Visible light photocatalysis

UR - http://www.scopus.com/inward/record.url?scp=84862756475&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862756475&partnerID=8YFLogxK

U2 - 10.1007/s11164-011-0456-y

DO - 10.1007/s11164-011-0456-y

M3 - Article

AN - SCOPUS:84862756475

VL - 38

SP - 1171

EP - 1180

JO - Research on Chemical Intermediates

JF - Research on Chemical Intermediates

SN - 0922-6168

IS - 6

ER -