A hemin binding G-quadruplex/Pb2+ complex to construct a visible light activated photoelectrochemical sensor on a ZnO/BiOI heterostructure

被引：19
作者：
Wang, Kewei [1 ]
Sun, Na [1 ]
Li, Xinpan [1 ]
Zhang, Ruihua [1 ]
Zu, Guangyue [1 ]
Wang, Jine [1 ]
Pei, Renjun [1 ]
机构：
[1] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Div Nanobiomed, Key Lab Nanobio Interface, Suzhou 215123, Peoples R China
来源：
ANALYTICAL METHODS | 2015年 / 7卷 / 21期
基金：
中国国家自然科学基金;
关键词：
IN-SITU ELECTRODEPOSITION; G-QUADRUPLEX; PHOTOCATALYTIC ACTIVITY; QUANTUM DOTS; NANOTUBE ARRAYS; SOLAR-CELLS; BIOSENSOR; BIOI; NANOPARTICLES; OXIDE;
D O I：
10.1039/c5ay02197a
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
This study reported the development of a p-n heterojunction photoelectrochemical biosensor using a G-quadruplex as the recognition system. The n-type ZnO nanorods and p-type BiOI nanoflakes were combined to form the heterostructure by in situ growth of BiOI attributed to a simple impregnating-hydroxylation method. This simple p-n heterojunction fabrication method could facilitate the development of rapid and sensitive visible light activated PEC sensors. In this study, the ZnO/BiOI photoelectrode showed a rapid photocurrent decrease in the presence of Pb2+ due to the electron withdrawing effect of hemin which bound with the G-quadruplex/Pb2+ complex. This PEC biosensor exhibited a good response following the concentration of Pb2+ in the range from 10 to 100 mu M.
引用
收藏
页码：9340 / 9346
页数：7
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