Vanadia-catalyzed solar photooxidation of aniline

被引：38

作者：

Karunakaran, C ^{[1
]}

Senthilvelan, S ^{[1
]}

机构：

[1] Annamalai Univ, Dept Chem, Annamalainagar 608002, Tamil Nadu, India

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2005年 / 289卷 / 02期

关键词：

photooxidation; aniline; sunlight; UV light; V2O5;

D O I：

10.1016/j.jcis.2005.03.071

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Vanadia photocatalyzes the oxidation of aniline to azobenzene in ethanol. The reaction was studied using natural sunlight and UV irradiation (365 nm) as a function of [aniline], catalyst loading, airflow rate, solvent composition, etc. The photocatalyst exhibits sustainable catalytic activity. The product formation is greater with illumination at 254 nm than at 365 nm. Electron donors such as triphenylphosphine, diphenylamine, and hydroquinone enhance the photocatalysis. The singlet oxygen quencher azide ion fails to inhibit the catalysis. The photocatalysis takes place in both protic and aprotic solvents. The mechanism of photocatalysis is discussed and the product formation analyzed using a kinetic model. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：466 / 471

页数：6

共 17 条

[11] PHOTOCATALYSIS ON TIO2 SURFACES - PRINCIPLES, MECHANISMS, AND SELECTED RESULTS [J].

LINSEBIGLER, AL ;

LU, GQ ;

YATES, JT .

CHEMICAL REVIEWS, 1995, 95 (03) :735-758

[12] Particle size and surface chemistry in photoelectrochemical reactions at semiconductor particles [J].

Muller, BR ;

Majoni, S ;

Memming, R ;

Meissner, D .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (14) :2501-2507

[13]

SANTHANA.M, 1968, INDIAN J CHEM, V6, P88

[14]

SANTHANAM M, 1972, INDIAN J CHEM, V10, P927

[15]

Srinivasan C, 1999, CURR SCI INDIA, V76, P534

[16] LIGHT-FLUX AND LIGHT-FLUX DENSITY-DEPENDENCE OF THE PHOTOMINERALIZATION RATE OF 2,4-DICHLOROPHENOL AND CHLOROACETIC ACID IN THE PRESENCE OF TIO2 [J].

VINCZE, L ;

KEMP, TJ .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1995, 87 (03) :257-260

[17] The absolute energy positions of conduction and valence bands of selected semiconducting minerals [J].

Xu, Y ;

Schoonen, MAA .

AMERICAN MINERALOGIST, 2000, 85 (3-4) :543-556

← 1 2 →