Pt Nanodot Inlaid Mesoporous NaBiOF Nanoblackberry for Remarkable Signal Amplification Toward Biomarker Detection

Pt Nanodot Inlaid Mesoporous NaBiOF Nanoblackberry for Remarkable Signal Amplification Toward Biomarker Detection

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Bibliographic Details
Published in:Microchimica acta. - Springer Vienna, 1937. - 190(2023), 6 vom: 12. Mai
Main Author: Ouyang, Ruizhuo (Author)
Other Authors: Zhang, Weilun (Author) Liu, Jinyao (Author) Li, Yuhao (Author) Zhang, Jing (Author) Jiang, Lan (Author) Zhao, Yuefeng (Author) Wang, Hui (Author) Dai, Chenyu (Author) Tamayo, Abel Ibrahim Balbín (Author) Liu, Baolin (Author) Miao, Yuqing (Author)
Format: electronic Article
Language:English
Published: 2023
ISSN:1436-5073
External Sources:lizenzpflichtig
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245 1 0 |a Pt Nanodot Inlaid Mesoporous NaBiOF Nanoblackberry for Remarkable Signal Amplification Toward Biomarker Detection 
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520 |a A new ultrasensitive sandwich-type electrochemical immunosensor has been successfully constructed to quantitatively detect carcinoembryonic antigen (CEA) using blackberry-like mesoporous bismuth-based nanospheres NaBiOF (NBOF NSs) inlaid with Pt nanodots (NDs) (BiPt NSs) as the antibody capture and signal-amplifying probe. The growth of Pt NDs inside the holes of NBOF NSs formed the nanozyme inlay outside NBOF NSs, greatly increasing the specific surface area and exposure of the catalytic active sites by minimizing the particle size of the Pt to nanodot scale. Such a blackberry-shaped heterojunction structure of BiPt NSs was well-suited to antibody capture and improved the catalytic performance of BiPt NSs in reducing $ H_{2} $$ O_{2} $, amplifying the signal, and yielding highly sensitive detection of CEA. The use of Au nanoparticle-modified multi-walled carbon nanotubes (AuMWCNTs) as the electrode substrates significantly enhanced the electron transfer behavior over the electrode surface, further increasing the conductivity and sensitivity of the immunosensor. Remarkably, good compatibility with human body fluid was achieved using the newly developed BiPt-based immunosensor resulting from the favorable biocompatibility and stability of both BiPt NSs and Au@MWCNTs. Benefiting from the double signal amplification strategy and the high biocompatibility, the immunosensor responded linearly to CEA in a wide range from 50 fg/mL to 100 ng/ml with an extremely low detection limit of 3.52 fg/mL (S/N = 3). The excellent detection properties of this new immunosensor were evidenced by the satisfactory selectivity, reproducibility, and stability obtained, as well as the reliable and precise determination of CEA in actual human blood samples. This work provides a new strategy for the early clinical diagnosis of cancer. Graphical Abstract Novel blackberry-like mesoporous NaBiOF nanospheres with Pt nanodot inlay were successfully usedto construct a sandwich-type electrochemical immunosensor for the ultra-sensitive detection ofcarcinoembryonic antigen in human blood plasma based on a remarkable signal amplification strategy. 
650 4 |a BiPt NSs 
650 4 |a CEA detection 
650 4 |a Chronoamperometry 
650 4 |a Immunosensor 
650 4 |a MWCNTs 
650 4 |a Human blood analysis 
700 1 |a Zhang, Weilun  |4 aut 
700 1 |a Liu, Jinyao  |4 aut 
700 1 |a Li, Yuhao  |4 aut 
700 1 |a Zhang, Jing  |4 aut 
700 1 |a Jiang, Lan  |4 aut 
700 1 |a Zhao, Yuefeng  |4 aut 
700 1 |a Wang, Hui  |4 aut 
700 1 |a Dai, Chenyu  |4 aut 
700 1 |a Tamayo, Abel Ibrahim Balbín  |4 aut 
700 1 |a Liu, Baolin  |4 aut 
700 1 |a Miao, Yuqing  |4 aut 
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773 1 8 |g volume:190  |g year:2023  |g number:6  |g day:12  |g month:05 
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