期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 14, 页码 12773-12781出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b01141
关键词
Molybdenum disulfide; Prussian blue nanocubes; electrochemical sensor; nonenzymatic; label-free
资金
- National Natural Science Foundation of China [61671250, 21475064, 21373260, 21305070]
- Ministry of Science and Technology of China [2013CB933802]
- Sci-tech Support Plan of Jiangsu Province [BE2014719]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT_15R37]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [YX03002]
Herein, an electrochemical detection platform was designed based on a Prussian blue nanocube-decorated molybdenum disulfide (MoS2-PBNCs) nanocomposite. Shape controlled and high-dispersion PBNCs were supported on the MoS2 nanosheet surface, which would be simply controlled by varying the experimental conditions. Expectedly, such obtained MoS2-based nanocomposites possessed excellent electro-catalytic ability, which could be employed to construct an electrochemical sensor for nonenzymatic hydrogen peroxide (H2O2) detection. More interestingly, MoS2-PBNCs nano composites could be utilized to construct a sensor for label-free detection of carcinoembryonic antigen (CEA). The electrochemical response of the MoS2-based immunosensor was linear with the CEA concentration ranging from 0.005 to 10 ng Moreover, the detection limit was calculated to be 0.54 pg mL(-1). The acceptable selectivity and high stability made such immunosensors detect CEA in human serum with satisfactory results. All data indicated that this MoS2-PBNCs nanocomposite may be a promising electrochemical sensing platform for the detection of chemical and biological molecules.
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