期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 400, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2020.123162
关键词
Bisphenol A; PEC; Aptasensor; Cu(I); Carbon nitride
资金
- National Key Research and Development Plan of Air Pollution Causes and Control Technology Research [2017YFC0211900]
- National Natural Science Foundation of China [21705058, 51872128]
- Six Talent Peaks Project of Jiangsu Province [XNY-009]
- Provincial Natural Science Foundation of Jiangsu [BK20170524, BK20191430]
- Chinese Postdoctoral Foundation [2018T110450]
- High-tech Research Key laboratory of Zhenjiang [SS2018002]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Bisphenol A (BPA) has been penetrating every corner of our daily life via the entities of children's toys, food containers and electronic equipment. The ubiquitous exposure of BPA urges the implementation of supervising its emission in environment. This work designs a method of photoelectrochemical (PEC) aptasensing for the determination of BPA based on the Cu(I) modified carbon nitride (Cu/g-C3N4). The Cu/g-C3N4 was prepared by solvothermal reaction with the ionic liquid bis(1-hexadecyl-3-methylimidazolium) tetrachlorocuprate (II) as Cu source. Cu/g-C3N4 displays excellent PEC performances due to the introduction of Cu(I). The visible light absorption capacity and conductivity of g-C3N4 can be enhanced by introducing Cu(I). With the help of BPA-binding aptamer immobilized on the surface of Cu/g-C3N4, the Cu/g-C3N4 PEC aptasensor has adopted for the determination of BPA. The PEC aptasensor exhibits a well-fitted linear correlation between the response photocurrent signal and the logarithm of the concentration of BPA. The PEC aptasensor shows a distinguished capability of BPA detection with a wide detection range of 5.00 x 10(-11) to 5.00 x 10(-5) g L-1 and low detection limit of 1.60 x 10(-11) g L-1 (at S/N = 3). This work provides a profound insight for detecting BPA in environmental water.
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