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Li M, Yu Q, Zheng M, Jiang R, Zhu H, Guo H, Sun H, Liu M. A label-free electrochemical immunosensor based on Au-BSN-rGO for highly-sensitive detection of β-amyloid 1-42. NANOSCALE 2023; 15:4063-4070. [PMID: 36734202 DOI: 10.1039/d2nr05787e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A label-free electrochemical immunosensor for high-sensitive detection of β-amyloid 1-42 (Aβ 1-42) was constructed based on Au-modified B, S, and N co-doped reduced graphene oxide (Au-BSN-rGO). The electronic structure of Au-BSN-rGO was investigated by first-principles calculations, which showed that the band gap of graphene was opened, thus improving its electrical conductivity. Moreover, Au-BSN-rGO was successfully prepared and characterized, and the obtained results discovered that it could be used as a signal amplifier for immunosensors due to the advantages of the good electrochemical characteristics and enormous surface area of BSN-rGO and the accelerated electron transfer ability of Au NPs. Furthermore, the label-free electrochemical immunosensor had a linear detection range of 0.1 pg mL-1-10 ng mL-1 and a detection limit of 0.072 pg mL-1, and it had good specificity, stability, and reproducibility. Also, this immunosensor showed recoveries of 89%-109% with an RSD of 2.61%-4.19% for detecting Aβ 1-42 in actual sample analysis. Therefore, the label-free electrochemical immunosensor based on Au-BSN-rGO should have a promising clinical application prospect for detecting Aβ 1-42.
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Affiliation(s)
- Mengjiao Li
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Biological Engineering and Food, Hubei University of, Technology, Wuhan, 430068, PR China
- Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, 430068, PR China.
| | - Qingjie Yu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Biological Engineering and Food, Hubei University of, Technology, Wuhan, 430068, PR China
- Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, 430068, PR China.
| | - Meie Zheng
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Biological Engineering and Food, Hubei University of, Technology, Wuhan, 430068, PR China
- Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, 430068, PR China.
| | - Rongrong Jiang
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Biological Engineering and Food, Hubei University of, Technology, Wuhan, 430068, PR China
- Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, 430068, PR China.
| | - Hongda Zhu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Biological Engineering and Food, Hubei University of, Technology, Wuhan, 430068, PR China
- National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Wuhan, 430068, PR China
- Key Laboratory of Fermentation Engineering (Ministry of Education), Wuhan, 430068, PR China
- Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, 430068, PR China.
| | - Huiling Guo
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Biological Engineering and Food, Hubei University of, Technology, Wuhan, 430068, PR China
- National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Wuhan, 430068, PR China
- Key Laboratory of Fermentation Engineering (Ministry of Education), Wuhan, 430068, PR China
- Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, 430068, PR China.
| | - Hongmei Sun
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Biological Engineering and Food, Hubei University of, Technology, Wuhan, 430068, PR China
- National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Wuhan, 430068, PR China
- Key Laboratory of Fermentation Engineering (Ministry of Education), Wuhan, 430068, PR China
- Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, 430068, PR China.
| | - Mingxing Liu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Biological Engineering and Food, Hubei University of, Technology, Wuhan, 430068, PR China
- National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Wuhan, 430068, PR China
- Key Laboratory of Fermentation Engineering (Ministry of Education), Wuhan, 430068, PR China
- Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, 430068, PR China.
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Recent advances in understanding and design of efficient hydrogen evolution electrocatalysts for water splitting: A comprehensive review. Adv Colloid Interface Sci 2023; 311:102811. [PMID: 36436436 DOI: 10.1016/j.cis.2022.102811] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/10/2022] [Accepted: 11/08/2022] [Indexed: 11/21/2022]
Abstract
An unsustainable reliance on fossil fuels is the primary cause of the vast majority of greenhouse gas emissions, which in turn lead to climate change. Green hydrogen (H2), which may be generated by electrolyzing water with renewable power sources, is a possible substitute for fossil fuels. On the other hand, the increasing intricacy of hydrogen evolution electrocatalysts that are presently being explored makes it more challenging to integrate catalytic theories, catalytic fabrication procedures, and characterization techniques. This review will initially present the thermodynamics, kinetics, and associated electrical and structural characteristics for HER electrocatalysts before highlighting design approaches for the electrocatalysts. Secondly, an in-depth discussion regarding the rational design, synthesis, mechanistic insight, and performance improvement of electrocatalysts is centered on both the intrinsic and extrinsic influences. Thirdly, the most recent technological advances in electrocatalytic water-splitting approaches are described. Finally, the difficulties and possibilities associated with generating extremely effective HER electrocatalysts for water-splitting applications are discussed.
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Li Y, Lin X, Du J. Iron-Facilitated Transformation of Mesoporous Spinel Nanosheets into Oxyhydroxide Active Species in the Oxygen Evolution Reaction. Inorg Chem 2021; 60:19373-19380. [PMID: 34841871 DOI: 10.1021/acs.inorgchem.1c03202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The oxygen evolution reaction (OER) is critical for many clean energy conversion and storage technologies because it contributes the electrons required for converting renewable electricity into value-added chemicals. Electrocatalysts can promote the sluggish oxygen evolution process involving four-electron transfer. Herein, we prepare mesoporous spinel oxide nanosheets and develop an efficient strategy using Fe substitution to enable mesoporous NiCo2O4 nanosheets to generate superior active centers for the OER. Additionally, the iron substitution also promotes the preoxidation of Co/Ni and facilitates the formation of active species. Raman spectroscopy data reveal that the active species of mesoporous NiCo2O4 nanosheets for the OER is NiCo2O4 itself, and the active species of Fe substitution in NiCo2O4 nanosheets are Ni(Co) oxyhydroxides. Therefore, the iron substitution is beneficial to facilitate the transformation of spinel NiCo2O4 into active Ni(Co) oxyhydroxides under OER conditions. Owing to the mesoporous nanosheet structure and the formation of oxyhydroxide active species, the optimized mesoporous Fe0.2Ni0.8Co2O4 nanosheet catalyst exhibits a low overpotential of 270 mV to deliver a current density of 10 mA cm-2 and a small Tafel slope of 39 mV dec-1 for the oxygen evolution reaction in alkaline media.
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Affiliation(s)
- Yue Li
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xinxuan Lin
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jing Du
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.,Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China
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Abbas S, Yasmeen G, Manzoor S, Manzoor S, Hussain D, Yousaf A, Al-Buriahi MS, Alshahrani B, Ashiq MN. Synergistic effect of reduced graphene oxide layers wrapped in polyaniline sheets to porous blades for boosted oxygen evolution reaction. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2021. [DOI: 10.1080/16583655.2021.2013650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sajid Abbas
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Ghazala Yasmeen
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Suryyia Manzoor
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Sumaira Manzoor
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Dilshad Hussain
- HEJ Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Ammar Yousaf
- Centre for Advanced Materials, Qatar University, Doha, Qatar
| | | | - B. Alshahrani
- Department of Physics, College of Sciences, King Khalid University, Abha, Saudi Arabia
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