Fabrication of graphene quantum dots/silicon nanowires nanohybrids for photoelectrochemical detection of microcystin-LR
作者： Junping Tian , Huimin Zhao , Xie Quan , Yaobin Zhang , Hongtao Yu
DOI: 10.1016/J.SNB.2014.02.046
关键词:
摘要: Abstract A photoelectrochemical immunosensor was developed by incorporating graphene quantum dots (GQDs) and highly oriented silicon nanowires (SiNWs) for the determination of microcystin-LR (MC-LR) in water samples. The GQDs/SiNWs heterostructure employed signal transduction biocompatible nanoscaffold antibody (Ab) immobilization. results showed that fabricated electrode exhibited better performance than SiNWs. specific recognition MC-LR affected optoelectronic properties Ab/GQDs/SiNWs electrode, leading to photocurrent decreases. In linear range from 0.1 μg L −1 10 μg L , decrease proportional concentration regression equation Y = 59.67 − 6.08 X with a limit detection 0.055 μg L . possessed good sensitivity, selectivity acceptable reusability microcystin-LR, which successfully applied determining real
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