Nano-Anatase-Enhanced Peroxyoxalate Chemiluminescence and Its Sensing Application

Liang Yang; Guijian Guan; Suhua Wang

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Nano-Anatase-Enhanced Peroxyoxalate Chemiluminescence and Its Sensing Application

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This paper reports a new nanosized anatase particle enhanced chemiluminescence sensor that utilizes the catalytic surface of anatase for sensitive detection of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). This chemiluminescence sensor was composed of anatase nanoparticies grafted with the nitrobenzoxadiazole (NBD) fluorophore, bis(2,4,6-trichlorophenyl)oxalate (TCPO), and hydrogen peroxide (H2O2). The chemiluminescence efficiency of the sensor has been greatly enhanced by 6 times compared with that in the absence of nano-anatase. However, 2,4-D could greatly suppressthe chemiluminescence enhancement of anatase nanoparticies probably by adsorbing and competitively reacting with the activated hydrogen peroxide on the anatase surface. The phenomenon has been used to detect 2,4-D by monitoring the quenching of the chemiluminescence of the system. The limit of detection of the chemiluminescence sensor system was estimated to be as low as 0.33 nmol/L. The simple and sensitive sensor reported herein exhibited an effective combination of traditional chemiluminescence with nano-anatase for sensitive detection, thus promoting the advances of chemiluminescence sensing on the basis of nanomateriais.

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《The journal of physical chemistry, C. Nanomaterials and interfaces》 |2012年第5期|3355-3362|共8页
作者
Liang Yang; Guijian Guan; Suhua Wang;
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作者单位

Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, China;

Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, China;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
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Nano-Anatase-Enhanced Peroxyoxalate Chemiluminescence and Its Sensing Application

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