Photodegradation of Chlorinated Organic Wastes with n-TiO2 Promoted by P-CuO

Hui Jean Chiang; Jyh Mirng Shyuu; Chong Mou Wang

doi:10.1002/jccs.199600004

Photodegradation of Chlorinated Organic Wastes with n-TiO₂ Promoted by P-CuO

Hui Jean Chiang^*, Jyh Mirng Shyuu, Chong Mou Wang

^*Corresponding author for this work

Department of Chemistry

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

Abstract

A variety of chlorinated organic wastes were photodecomposed with p-CuO-modified TiO₂ particles (denoted CuO/TiO₂). Based on the photoactivity measured in oxygenated solutions containing sodium 2,2′-dichloropropionate, the photoactivity of TiO₂ is significantly enhanced with p-CuO loading; in the case with 0.4 wt% of CuO, the activity is increased by a facor of 4. Photochemical-TiO₂-slurry cell techniques and voltammetric characterizations suggest this CuO-promoted enhancement is likely to result from the acceleration of oxygen reduction at TiO₂ via Cu^IIO/Cu^IO. Long-term tests showed that these CuO/TiO₂ particles are photochemically robust; within 100-hours' continuous photolysis, insignificant loss in photoactivity was detected. However, increasing loading of p-CuO may jeopardize the photoactivity, due to the deterioration in the TiO₂ absorbability of UV irradiation.

Original language	English
Pages (from-to)	21-27
Number of pages	7
Journal	Journal of the Chinese Chemical Society
Volume	43
Issue number	1
DOIs	https://doi.org/10.1002/jccs.199600004
Publication status	Published - 1996

Keywords

Chlorinated organics
n-Titanium dioxide
p-Copper oxide
Photochemicalslurry cell
Photodegradation

ASJC Scopus subject areas

Chemistry(all)

Access to Document

10.1002/jccs.199600004

Cite this

@article{97555e2a3b074ee4a97be3db74d8e37a,

title = "Photodegradation of Chlorinated Organic Wastes with n-TiO2 Promoted by P-CuO",

abstract = "A variety of chlorinated organic wastes were photodecomposed with p-CuO-modified TiO2 particles (denoted CuO/TiO2). Based on the photoactivity measured in oxygenated solutions containing sodium 2,2′-dichloropropionate, the photoactivity of TiO2 is significantly enhanced with p-CuO loading; in the case with 0.4 wt% of CuO, the activity is increased by a facor of 4. Photochemical-TiO2-slurry cell techniques and voltammetric characterizations suggest this CuO-promoted enhancement is likely to result from the acceleration of oxygen reduction at TiO2 via CuIIO/CuIO. Long-term tests showed that these CuO/TiO2 particles are photochemically robust; within 100-hours' continuous photolysis, insignificant loss in photoactivity was detected. However, increasing loading of p-CuO may jeopardize the photoactivity, due to the deterioration in the TiO2 absorbability of UV irradiation.",

keywords = "Chlorinated organics, n-Titanium dioxide, p-Copper oxide, Photochemicalslurry cell, Photodegradation",

author = "Chiang, {Hui Jean} and Shyuu, {Jyh Mirng} and Wang, {Chong Mou}",

year = "1996",

doi = "10.1002/jccs.199600004",

language = "English",

volume = "43",

pages = "21--27",

journal = "Journal of the Chinese Chemical Society",

issn = "0009-4536",

publisher = "Chinese Chemical Society",

number = "1",

}

TY - JOUR

T1 - Photodegradation of Chlorinated Organic Wastes with n-TiO2 Promoted by P-CuO

AU - Chiang, Hui Jean

AU - Shyuu, Jyh Mirng

AU - Wang, Chong Mou

PY - 1996

Y1 - 1996

N2 - A variety of chlorinated organic wastes were photodecomposed with p-CuO-modified TiO2 particles (denoted CuO/TiO2). Based on the photoactivity measured in oxygenated solutions containing sodium 2,2′-dichloropropionate, the photoactivity of TiO2 is significantly enhanced with p-CuO loading; in the case with 0.4 wt% of CuO, the activity is increased by a facor of 4. Photochemical-TiO2-slurry cell techniques and voltammetric characterizations suggest this CuO-promoted enhancement is likely to result from the acceleration of oxygen reduction at TiO2 via CuIIO/CuIO. Long-term tests showed that these CuO/TiO2 particles are photochemically robust; within 100-hours' continuous photolysis, insignificant loss in photoactivity was detected. However, increasing loading of p-CuO may jeopardize the photoactivity, due to the deterioration in the TiO2 absorbability of UV irradiation.

AB - A variety of chlorinated organic wastes were photodecomposed with p-CuO-modified TiO2 particles (denoted CuO/TiO2). Based on the photoactivity measured in oxygenated solutions containing sodium 2,2′-dichloropropionate, the photoactivity of TiO2 is significantly enhanced with p-CuO loading; in the case with 0.4 wt% of CuO, the activity is increased by a facor of 4. Photochemical-TiO2-slurry cell techniques and voltammetric characterizations suggest this CuO-promoted enhancement is likely to result from the acceleration of oxygen reduction at TiO2 via CuIIO/CuIO. Long-term tests showed that these CuO/TiO2 particles are photochemically robust; within 100-hours' continuous photolysis, insignificant loss in photoactivity was detected. However, increasing loading of p-CuO may jeopardize the photoactivity, due to the deterioration in the TiO2 absorbability of UV irradiation.

KW - Chlorinated organics

KW - n-Titanium dioxide

KW - p-Copper oxide

KW - Photochemicalslurry cell

KW - Photodegradation

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