EXPERIMENTAL SET-UP FOR IN-SITU X-RAY-ABSORPTION SPECTROSCOPY ANALYSIS OF PHOTOCHEMICAL-REACTIONS - THE PHOTOCATALYTIC REDUCTION OF GOLD ON TITANIA

被引：11

作者：

CABALLERO, A

GONZALEZELIPE, AR

FERNANDEZ, A

HERRMANN, JM

DEXPERT, H

VILLAIN, F

机构：

[1] INST CIENCIA MAT SEVILLA,POB 1115,E-41080 SEVILLE,SPAIN

[2] ECOLE CENT LYON,CNRS,URA,F-69131 ECULLY,FRANCE

[3] LAB UTILISAT RAYONNEMENT ELECTROMAGNET,F-91405 ORSAY,FRANCE

[4] DEPT QUIM INORGAN,E-41080 SEVILLE,SPAIN

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1994年 / 78卷 / 02期

关键词：

D O I：

10.1016/1010-6030(93)03716-T

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：

An experimental set-up is described for in-situ X-ray absorption spectroscopy analysis of photochemical and photocatalytic reactions. It consists of a photochemical reactor connected to a peristaltic pump and an X-ray absorption transmission cell specially designed for liquid samples. The criteria for selecting the experimental conditions are discussed and tested by the study of the photocatalytic reduction of Au3+ cations on colloidal TiO2. The results show that it is possible to follow in real time the two-step mechanism of the photoreduction of noble metals on titania, i.e. the nucleation step and then the growth of the metallic crystallites.

引用

页码：169 / 172

页数：4

共 20 条

[1] LIGHT-INDUCED REDUCTION OF RHODIUM(III) AND PALLADIUM(II) ON TITANIUM-DIOXIDE DISPERSIONS AND THE SELECTIVE PHOTOCHEMICAL SEPARATION AND RECOVERY OF GOLD(III), PLATINUM(IV), AND RHODIUM(III) IN CHLORIDE MEDIA [J].