EPR investigation on the efficiency of hydroxyl radical production of gamma-irradiated anatase and bentonite

Jinho Jung; Myun Joo Lee

doi:10.1016/S0043-1354(02)00038-6

EPR investigation on the efficiency of hydroxyl radical production of gamma-irradiated anatase and bentonite

Jinho Jung, Myun Joo Lee

Division of Environmental Science and Ecological Engineering

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Anatase and bentonite were treated by gamma rays in various conditions, and the change of the catalysts was characterized by electron paramagnetic resonance spectroscopy. Anatase gave four peaks with g_∥=1.951 g_⊥=1.973, g=1.992 and 2.005. The height of the four peaks was directly proportional to the efficiency of hydroxyl radical production, and anatase treated by gamma rays in alkaline condition showed the most efficient production. Bentonite gave a peak with g=2.005. In contrast to anatase, the peak height was inversely proportional to the efficiency of hydroxyl radical production, and non-treated bentonite was the most efficient catalyst. Furthermore, the efficiency of hydroxyl radical production of the catalysts significantly influenced the decomposition of trichloroethylene and perchloroethylene by gamma rays.

Original language	English
Pages (from-to)	3359-3363
Number of pages	5
Journal	Water Research
Volume	36
Issue number	13
DOIs	https://doi.org/10.1016/S0043-1354(02)00038-6
Publication status	Published - 2002 Jul

Keywords

Anatase
Bentonite
EPR
Gamma rays
Hydroxyl radicals
PCE
TCE

ASJC Scopus subject areas

Ecological Modelling
Water Science and Technology
Waste Management and Disposal
Pollution

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10.1016/S0043-1354(02)00038-6

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@article{f4cafa237d9340a796be9ce53458374b,

title = "EPR investigation on the efficiency of hydroxyl radical production of gamma-irradiated anatase and bentonite",

abstract = "Anatase and bentonite were treated by gamma rays in various conditions, and the change of the catalysts was characterized by electron paramagnetic resonance spectroscopy. Anatase gave four peaks with g∥=1.951 g⊥=1.973, g=1.992 and 2.005. The height of the four peaks was directly proportional to the efficiency of hydroxyl radical production, and anatase treated by gamma rays in alkaline condition showed the most efficient production. Bentonite gave a peak with g=2.005. In contrast to anatase, the peak height was inversely proportional to the efficiency of hydroxyl radical production, and non-treated bentonite was the most efficient catalyst. Furthermore, the efficiency of hydroxyl radical production of the catalysts significantly influenced the decomposition of trichloroethylene and perchloroethylene by gamma rays.",

keywords = "Anatase, Bentonite, EPR, Gamma rays, Hydroxyl radicals, PCE, TCE",

author = "Jinho Jung and Lee, {Myun Joo}",

note = "Funding Information: We would like to thank Dr. Young-Hwan Cho and Ms. Mi-Ran Yoo at KAERI for their help on EPR spectroscopy. The Nuclear R&D Program of MOST, Korea funded this work. ",

year = "2002",

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doi = "10.1016/S0043-1354(02)00038-6",

language = "English",

volume = "36",

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journal = "Water Research",

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T1 - EPR investigation on the efficiency of hydroxyl radical production of gamma-irradiated anatase and bentonite

AU - Jung, Jinho

AU - Lee, Myun Joo

N1 - Funding Information: We would like to thank Dr. Young-Hwan Cho and Ms. Mi-Ran Yoo at KAERI for their help on EPR spectroscopy. The Nuclear R&D Program of MOST, Korea funded this work.

PY - 2002/7

Y1 - 2002/7

N2 - Anatase and bentonite were treated by gamma rays in various conditions, and the change of the catalysts was characterized by electron paramagnetic resonance spectroscopy. Anatase gave four peaks with g∥=1.951 g⊥=1.973, g=1.992 and 2.005. The height of the four peaks was directly proportional to the efficiency of hydroxyl radical production, and anatase treated by gamma rays in alkaline condition showed the most efficient production. Bentonite gave a peak with g=2.005. In contrast to anatase, the peak height was inversely proportional to the efficiency of hydroxyl radical production, and non-treated bentonite was the most efficient catalyst. Furthermore, the efficiency of hydroxyl radical production of the catalysts significantly influenced the decomposition of trichloroethylene and perchloroethylene by gamma rays.

AB - Anatase and bentonite were treated by gamma rays in various conditions, and the change of the catalysts was characterized by electron paramagnetic resonance spectroscopy. Anatase gave four peaks with g∥=1.951 g⊥=1.973, g=1.992 and 2.005. The height of the four peaks was directly proportional to the efficiency of hydroxyl radical production, and anatase treated by gamma rays in alkaline condition showed the most efficient production. Bentonite gave a peak with g=2.005. In contrast to anatase, the peak height was inversely proportional to the efficiency of hydroxyl radical production, and non-treated bentonite was the most efficient catalyst. Furthermore, the efficiency of hydroxyl radical production of the catalysts significantly influenced the decomposition of trichloroethylene and perchloroethylene by gamma rays.

KW - Anatase

KW - Bentonite

KW - EPR

KW - Gamma rays

KW - Hydroxyl radicals

KW - PCE

KW - TCE

UR - http://www.scopus.com/inward/record.url?scp=0036629556&partnerID=8YFLogxK

U2 - 10.1016/S0043-1354(02)00038-6

DO - 10.1016/S0043-1354(02)00038-6

M3 - Article

C2 - 12188135

AN - SCOPUS:0036629556

VL - 36

SP - 3359

EP - 3363

JO - Water Research

JF - Water Research

SN - 0043-1354

IS - 13

ER -

EPR investigation on the efficiency of hydroxyl radical production of gamma-irradiated anatase and bentonite

Abstract

Keywords

ASJC Scopus subject areas

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