H2O2 sensor based on the room-temperature phosphorescence of nano TiO2/SiO2 composite

被引：168

作者：

Shu, Xiaohong

Chen, Ying

Yuan, Hongyan

Gao, Shangfeng

Xiao, Dan ^{[1
]}

机构：

[1] Sichuan Univ, Coll Chem, Chengdu 610065, Peoples R China

[2] Sichuan Univ, Coll Chem Engn, Chengdu 610065, Peoples R China

来源：

ANALYTICAL CHEMISTRY | 2007年 / 79卷 / 10期

关键词：

D O I：

10.1021/ac0624142

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A TiO2/SiO2 composite prepared by the sol-gel route can produce highly emissive broadband room-temperature phosphorescence at an excitation wavelength of 403 nm. The white phosphorescence of TiO2/SiO2 could be quenched by H2O2. The phosphorescence quenching effect demonstrated excellent sensitivity and high selectivity to H2O2. Furthermore, the phosphorescence of TiO2/SiO2 can be recovered when it is dipped in a hydroxylamine hydrochloride solution. Therefore, the TiO2/SiO2 was used to develop a reproducible phosphorescence sensor for H2O2. It has been successfully applied to the determination of H2O2 in the enzymatic catalytic reaction and real samples.

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收藏

页码：3695 / 3702

页数：8

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