Enhancement of salicylate photodegradation under bias in binary mixtures

被引：9

作者：

Calvo, ME ^{[1
]}

Candal, RJ ^{[1
]}

Bilmes, SA ^{[1
]}

机构：

[1] Univ Buenos Aires, INQUIMAE, DQIAQF, Fac Ciencias Exactas & Nat, RA-1428 Buenos Aires, DF, Argentina

来源：

CATALYSIS TODAY | 2002年 / 76卷 / 2-4期

关键词：

photocatalysis; photoelectrochemistry; TiO2; salicylate;

D O I：

10.1016/S0920-5861(02)00213-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The influence of oxalate and methanol on the photodegradation behaviour of salicylate under bias was studied measuring the time evolution of the photocurrent and the concentration in solution. In N-2 saturated electrolytes, the presence of the second component produces an enhancement of salicylate degradation, but the degradation of the added photolyte decreases. In the presence Of O-2 or other electron acceptors salicylate photodegradation is faster, and the positive effect of a sacrificial photolyte is minimised. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：133 / 139

页数：7

共 19 条

[1]

Baizer M., 1983, ORGANIC ELECTROCHEMI, V2nd

[2] Surface and electronic structure of titanium dioxide photocatalysts [J].

Bilmes, SA ;

Mandelbaum, P ;

Alvarez, F ;

Victoria, NM .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (42) :9851-9858

[3]

BLANCO J, 2000, IN PRESS SOLAR DETOX, pCH7

[4] Self-organization of TiO2 nanoparticles in thin films [J].

Burnside, SD ;

Shklover, V ;

Barbe, C ;

Comte, P ;

Arendse, F ;

Brooks, K ;

Gratzel, M .

CHEMISTRY OF MATERIALS, 1998, 10 (09) :2419-2425

[5] Photoelectrochemistry of oxalate on particulate TiO2 electrodes [J].

Byrne, JA ;

Eggins, BR .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 457 (1-2) :61-72

[6] Photooxidation of organic mixtures on biased TiO2 films [J].

Calvo, ME ;

Candal, RJ ;

Bilmes, SA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2001, 35 (20) :4132-4138

[7] Electrochemical oxidation potential of photocatalyst reducing agents [J].

Colucci, J ;

Montalvo, V ;

Hernandez, R ;

Poullet, C .

ELECTROCHIMICA ACTA, 1999, 44 (15) :2507-2514

[8] Quantum yields of the photocatalytic oxidation of formate in aqueous TiO2 suspensions under continuous and periodic illumination [J].

Cornu, CJG ;

Colussi, AJ ;

Hoffmann, MR .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (07) :1351-1354

[9] Photoelectrochemical reactors for the solar decontamination of water [J].

Fernandez-Ibañez, P ;

Malato, S ;

Enea, O .

CATALYSIS TODAY, 1999, 54 (2-3) :329-339

[10] PHOTOELECTROCATALYTIC DEGRADATION OF FORMIC-ACID USING A POROUS TIO2 THIN-FILM ELECTRODE [J].

KIM, DH ;

ANDERSON, MA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1994, 28 (03) :479-483

← 1 2 →