期刊
ANALYST
卷 144, 期 10, 页码 3405-3413出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9an00234k
关键词
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资金
- National Natural Science Foundation of China [21765006]
- Natural Science Foundation of Guangxi Province of China [2015GXNSFFA139005]
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection
- Project of High Level Innovation Team and Outstanding Scholar in Guangxi Colleges and Universities [Guijiaoren [2014]49]
A novel ultrasensitive photoelectrochemical sensor for benzoyl peroxide (BPO) was constructed under visible light irradiation. A novel nanostructured material made of molecularly imprinted polymer (MIP)modified silver iodide nanoparticle-titanium dioxide nanotube arrays (AgINPs-TiO2 NTs) was designed as a photoactive electrode (denoted as MIP@AgINPs-TiO2 NTs). AgI-sensitized TiO2 nanotube arrays were prepared by a simple dissolution-precipitation-calcination process and then employed as a matrix to graft the MIP recognition element. Such a newly designed molecularly imprinted photoelectrochemical sensor exhibits high sensitivity and selectivity for the determination of BPO. The photoelectrochemical analysis is highly linear over the BPO concentration range from 1 x 10(-12) mol L-1 to 5 x 10(-10) mol L-1 with a detection limit of 2.53 x 10(-13) mol L-1 (S/N = 3, n = 11). The sensor designed based on a low cost and highly sensitive assay was successfully applied in the determination of BPO in spiked samples.
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