Photoelectrochemical doping of TiO2 particles and the effect of charge carrier density on the photocatalytic activity of microporous semiconductor electrode films

被引：77

作者：

Torimoto, T

Fox, RJ

Fox, MA

机构：

[1] Dept. of Chemistry and Biochemistry, University of Texas at Austin, Austin

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1996年 / 143卷 / 11期

关键词：

D O I：

10.1149/1.1837277

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Irradiation with a very high intensity laser pulse (355 nm) induces blue color in TiO2 powders and films. The blue color, which is assigned to the formation of Ti3+ in the particle, persists in air for several months. With an increase of the concentration of Ti3+ in a given particle, photocatalytic activity is decreased because of a decrease in the thickness of the space-charge layer as deep Ti3+ traps are populated.

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页码：3712 / 3717

页数：6

相关论文

共 95 条

[41] CHARGE-TRANSFER PROCESSES IN COUPLED SEMICONDUCTOR SYSTEMS - PHOTOCHEMISTRY AND PHOTOELECTROCHEMISTRY OF THE COLLOIDAL CDS-ZNO SYSTEM [J].

HOTCHANDANI, S ;

KAMAT, PV .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (16) :6834-6839

[42] ELECTRON-PARAMAGNETIC-RES STUDY OF HYDRATED ANATASE UNDER UV IRRADIATION [J].

HOWE, RF ;

GRATZEL, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (14) :3906-3909

[43] ELECTRON-PARAMAGNETIC-RES OBSERVATION OF TRAPPED ELECTRONS IN COLLOIDAL TIO2 [J].

HOWE, RF ;

GRATZEL, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1985, 89 (21) :4495-4499

[44] HETEROGENEOUS PHOTOCATALYSIS - DEGRADATION OF DILUTE-SOLUTIONS OF DICHLOROMETHANE (CH2CL2), CHLOROFORM (CHCL3), AND CARBON-TETRACHLORIDE (CCL4) WITH ILLUMINATED TIO2 PHOTOCATALYST [J].

HSIAO, CY ;

LEE, CL ;

OLLIS, DF .

JOURNAL OF CATALYSIS, 1983, 82 (02) :418-423

[45] APPLICATION OF TIO2 SOL FOR UV-RADIATION MEASUREMENTS [J].

HUANG, JS ;

DING, HL ;

DODSON, WS ;

LI, YZ .

ANALYTICA CHIMICA ACTA, 1995, 311 (01) :115-122

[46] INFLUENCE OF DONOR DENSITY OF SEMICONDUCTOR SUBSTRATE ON QUANTUM YIELD OF DYE-SENSITIZED PHOTOCURRENT IN THE RHODAMINE B/SNO2 SYSTEM [J].

ITOH, K ;

NAKAO, M ;

HONDA, K .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1984, 178 (02) :329-332

[47] PHOTOCHEMISTRY ON NONREACTIVE AND REACTIVE (SEMICONDUCTOR) SURFACES [J].

KAMAT, PV .

CHEMICAL REVIEWS, 1993, 93 (01) :267-300

[48] PHOTOINDUCED CHARGE-TRANSFER BETWEEN CARBON AND SEMICONDUCTOR CLUSTERS - ONE-ELECTRON REDUCTION OF C-60 IN COLLOIDAL TIO2 SEMICONDUCTOR SUSPENSIONS [J].

KAMAT, PV ;

BEDJA, I ;

HOTCHANDANI, S .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (37) :9137-9142

[49] PHOTOPHYSICS AND PHOTOCHEMISTRY OF QUANTIZED ZNO COLLOIDS [J].

KAMAT, PV ;

PATRICK, B .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (16) :6829-6834

[50]

KOLLE U, 1985, INORG CHEM, V24, P2253

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