Evaluation of the Catalytic Effect of the Ozone/Carbon Nanotube (O3/CNT) Process Using para-Chlorobenzoic Acid (pCBA)

Yeojoon Yoon; Jonghyuk Moon; Minhwan Kwon; Youmi Jung; Seohee Kim; Joon Wun Kang

doi:10.1080/01919512.2014.904738

Evaluation of the Catalytic Effect of the Ozone/Carbon Nanotube (O₃/CNT) Process Using para-Chlorobenzoic Acid (pCBA)

Yeojoon Yoon, Jonghyuk Moon, Minhwan Kwon, Youmi Jung, Seohee Kim, Joon Wun Kang

Division of Environmental Engineering

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

7 Citations (Scopus)

Abstract

The catalytic effects and mechanisms of the ozone/carbon nanotube (O₃/CNT) process using para-chlorobenzoic acid (pCBA) were evaluated. To use pCBA as an O₃-resistant OH• probe compound in a pure water system at pH 7, an adequate amount of scavenger was needed. During the O₃/CNT process, a synergetic catalytic effect by OH• generation on the CNT surface could be evaluated in the condition of excess tert-butyl alcohol (TBA) concentration. The OH• radicals were generated and existed on both the bulk phase and CNT surface. The OH-ct values of the CNT surface and bulk phase in the O₃/CNT process for 10 min were 2.1 × 10⁻⁵ and 2.5 × 10⁻⁵μ M·s, respectively. In modifying CNT evaluation, the catalytic effects were the most apparent in the following order: CNT treated with acid then heat (CNT-T), original untreated CNT (CNT-O), and CNT treated with an acid (CNT-A).

Original language	English
Pages (from-to)	465-471
Number of pages	7
Journal	Ozone: Science and Engineering
Volume	36
Issue number	5
DOIs	https://doi.org/10.1080/01919512.2014.904738
Publication status	Published - 2014 Sep 3

Bibliographical note

Funding Information:
This work is supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (2013R1A2A2A05006466) and Korea Ministry of Education (MOE) as “BK21 PLUS Project.”

Publisher Copyright:
© 2014, Copyright © 2014 International Ozone Association.

All Science Journal Classification (ASJC) codes

Environmental Engineering
Environmental Chemistry

Access to Document

10.1080/01919512.2014.904738

Cite this

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title = "Evaluation of the Catalytic Effect of the Ozone/Carbon Nanotube (O3/CNT) Process Using para-Chlorobenzoic Acid (pCBA)",

abstract = "The catalytic effects and mechanisms of the ozone/carbon nanotube (O3/CNT) process using para-chlorobenzoic acid (pCBA) were evaluated. To use pCBA as an O3-resistant OH• probe compound in a pure water system at pH 7, an adequate amount of scavenger was needed. During the O3/CNT process, a synergetic catalytic effect by OH• generation on the CNT surface could be evaluated in the condition of excess tert-butyl alcohol (TBA) concentration. The OH• radicals were generated and existed on both the bulk phase and CNT surface. The OH-ct values of the CNT surface and bulk phase in the O3/CNT process for 10 min were 2.1 × 10−5 and 2.5 × 10−5μ M·s, respectively. In modifying CNT evaluation, the catalytic effects were the most apparent in the following order: CNT treated with acid then heat (CNT-T), original untreated CNT (CNT-O), and CNT treated with an acid (CNT-A).",

author = "Yeojoon Yoon and Jonghyuk Moon and Minhwan Kwon and Youmi Jung and Seohee Kim and Kang, {Joon Wun}",

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AU - Jung, Youmi

AU - Kim, Seohee

AU - Kang, Joon Wun

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N2 - The catalytic effects and mechanisms of the ozone/carbon nanotube (O3/CNT) process using para-chlorobenzoic acid (pCBA) were evaluated. To use pCBA as an O3-resistant OH• probe compound in a pure water system at pH 7, an adequate amount of scavenger was needed. During the O3/CNT process, a synergetic catalytic effect by OH• generation on the CNT surface could be evaluated in the condition of excess tert-butyl alcohol (TBA) concentration. The OH• radicals were generated and existed on both the bulk phase and CNT surface. The OH-ct values of the CNT surface and bulk phase in the O3/CNT process for 10 min were 2.1 × 10−5 and 2.5 × 10−5μ M·s, respectively. In modifying CNT evaluation, the catalytic effects were the most apparent in the following order: CNT treated with acid then heat (CNT-T), original untreated CNT (CNT-O), and CNT treated with an acid (CNT-A).

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