Photoelectrochemical degradation of atrazina on titanium dioxide:: Effect of different experimental parameters

被引：10

作者：

de Santana, H ^{[1
]}

Bonancêa, CE ^{[1
]}

Takashima, K ^{[1
]}

机构：

[1] Univ Estadual Londrina, Ctr Ciencias Exatas, Dept Quim, BR-86051970 Londrina, PR, Brazil

来源：

QUIMICA NOVA | 2003年 / 26卷 / 06期

关键词：

photoelectrocatalytic degradation; TiO2; atrazine;

D O I：

10.1590/S0100-40422003000600005

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The atrazine photoelectrochemical degradation has been examined in solutions containing TiO2 on immobilized films under a variety of experimental conditions. It was possible to observe that the supporting electrolyte nature affects the intensity of the photocurrent, being an indicative of the adsorption process. The disappearance of the organic molecule follows approximately a pseudo-first order kinetic. As mineralization product, NH4+ and NO3- ion have been identified. These results indicated that the formation of NH4+ ion can be associated to the effect of atrazine adsorption, due to need of potential adaptation together with a variation in the supporting electrolyte concentration.

引用

页码：807 / 811

页数：5

共 26 条

[1] Synergetic effect in degradation of formic acid using a new photoelectrochemical reactor [J].

An, TC ;

Xiong, Y ;

Li, GY ;

Zha, CH ;

Zhu, XH .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2002, 152 (1-3) :155-165

[2] KINETICS OF THE UV DEGRADATION OF ATRAZINE IN AQUEOUS-SOLUTION IN THE PRESENCE OF HYDROGEN-PEROXIDE [J].

ARANTEGUI, J ;

PRADO, J ;

CHAMARRO, E ;

ESPLUGAS, S .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1995, 88 (01) :65-74

[3] Photocatalytic degradation of toluene in the gas phase:: comparative study of some TiO2 supports [J].

Bouzaza, A ;

Laplanche, A .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2002, 150 (1-3) :207-212

[4]

CHOI W, 1994, PHYS CHEM, V98, P1369

[5] Photocatalytic degradation of organic compounds in aqueous systems by transition metal doped polycrystalline TiO2 [J].

Di Paola, A ;

García-López, E ;

Ikeda, S ;

Marcì, G ;

Ohtani, B ;

Palmisano, L .

CATALYSIS TODAY, 2002, 75 (1-4) :87-93

[6]

Faria D.L.A.d., 1999, QUIM NOVA, V22, P541

[7] PHOTOELECTROCHEMICAL DECOMPOSITION OF SURFACTANTS ON A TIO2/TCO PARTICULATE FILM ELECTRODE ASSEMBLY [J].

HIDAKA, H ;

ASAI, Y ;

ZHAO, JC ;

NOHARA, K ;

PELIZZETTI, E ;

SERPONE, N .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (20) :8244-8248

[8] Photoelectrochemical behaviour of methanol oxidation at nanoporous TiO2 film electrodes [J].

Jiang, DL ;

Zhao, HJ ;

Jia, ZB ;

Cao, JL ;

John, R .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2001, 144 (2-3) :197-204

[9] Photocatalytic degradation of propachlor in aqueous TiO2 suspensions.: Determination of the reaction pathway and identification of intermediate products by various analytical methods [J].

Konstantinou, IK ;

Sakkas, VA ;

Albanis, TA .

WATER RESEARCH, 2002, 36 (11) :2733-2742

[10] PHOTOLYSIS OF CHLOROFORM AND OTHER ORGANIC-MOLECULES IN AQUEOUS TIO2 SUSPENSIONS [J].

KORMANN, C ;

BAHNEMANN, DW ;

HOFFMANN, MR .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1991, 25 (03) :494-500

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