Journal
BIOSENSORS & BIOELECTRONICS
Volume 124, Issue -, Pages 191-198Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2018.10.012
Keywords
Nanoporous Au-Sn Alloy; Pt decoration; Ascorbic acid; Dopamine; Uric acid; Bio-Electrochemical sensor
Categories
Funding
- National Natural Science Foundation of China [51271205, 50801070, 51571093]
- Excellent young college teacher development program in Guangdong province [Yq2013006]
- Research and Application of Key Technologies Oriented the Industrial Development [90035-3283309, 90035-3283321]
- Project of Science and Technology Plan by Guangzhou city [2013Y2-00102]
- Chinese Central Authority University Fund [2015ZM094, 16lgjc6]
- National Nature Science Foundation of China, China [21622509, 21475122, 21527806]
- Department of Science and Techniques of Jilin Province [20160201008GX]
- Jilin Province Development and Reform Commission [2016C014, 2017C053-1]
- Science and Technology Bureau of Changchun [15SS05]
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In this work, Pt nanoparticles modified nanoporous AuSn(Pt@NP-AuSn) alloy on Ni buffered flexible carbon fiber paper (CFP) is fabricated by a simple replacement reaction in which NP-AuSn is fabricated by controllable dealloy of electrodeposited Au-Sn alloy films. The as prepared Pt@NP-AuSn/Ni/CFP possesses hierarchical pore structure, high specific surface area and excellent catalytic activity. Due to the bi-functions of both the large surface area of nanoporous metal and macroporous of carbon fiber paper facilitating mass transfer, the Pt@NP-AuSn/Ni/CFP shows high sensitivity of detecting ascorbic acid (AA), dopamine (DA) and uric acid (UA), with sensitivities of 0.14 mu A mu M-1 cm(-2), 15.23 mu A mu M-1 cm(-2), 0.28 mu A mu M-1 cm(-2) under the concentration ranging from 200 to 2000 mu M, 1-10 mu M, and 25-800 mu M for AA, DA and UA, respectively. Further, the Pt@NP-AuSn/Ni/CFP possesses long-term stability of sensing AA, DA and UA and presents great anti-interference towards a variety of common compounds in body fluid. All of these results manifest the Pt@NP-AuSn/Ni/CFP can be a promising candidate for the application of the electrochemical sensor for simultaneous detection of AA, DA and UA.
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