1
|
Li F, Feng J, Gao Z, Shi L, Wu D, Du B, Wei Q. Facile Synthesis of Cu 2O@TiO 2-PtCu Nanocomposites as a Signal Amplification Strategy for the Insulin Detection. ACS APPLIED MATERIALS & INTERFACES 2019; 11:8945-8953. [PMID: 30758174 DOI: 10.1021/acsami.9b01779] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Novel ultrasensitive sandwich-type electrochemical immunosensor was proposed for the quantitative detection of insulin, a representative biomarker for diabetes. To this end, molybdenum disulfide nanosheet-loaded gold nanoparticles (MoS2/Au NPs) were used as substrates to modify bare glassy carbon electrodes. MoS2/Au NPs not only present superior biocompatible and large specific surface area to enhance the loading capacity of primary antibody (Ab1) but also present good electrical conductivity to accelerate electron transfer rate. Moreover, the amino-functionalized cuprous oxide decorated with titanium dioxide octahedral composites (Cu2O@TiO2-NH2) were prepared to load dendritic platinum-copper nanoparticles (PtCu NPs) to realize signal amplification strategy. The resultant nanocomposites (cuprous oxide decorated with titanium dioxide octahedral loaded dendritic platinum-copper nanoparticles) demonstrate uniform octahedral morphology and size, which effectively increases the catalytically active sites and specific surface area to load the secondary antibody (Ab2), even increases conductivity. Most importantly, the resultant nanocomposites possess superior electrocatalytic activity for hydrogen peroxide (H2O2) reduction, which present the signal amplification strategy. Under the optimal conditions, the proposed immunosensor exhibited a linear relationship between logarithm of insulin antigen concentration and amperometric response within a broad range from 0.1 pg/mL to 100 ng/mL and a limit detection of 0.024 pg/mL. Meanwhile, the immunosensor was employed to detect insulin in human serum with satisfactory results. Furthermore, it also presents good reproducibility, selectivity, and stability, which exhibits broad application prospects in biometric analysis.
Collapse
Affiliation(s)
- Faying Li
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P.R. China
- Centre for Energy, Materials and Telecommunications , Institut National de la Recherche Scientifique , 1650 Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Jinhui Feng
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P.R. China
| | - Zengqiang Gao
- School of Chemistry and Chemical Engineering , Shandong University of Technology , Zibo 255049 , P.R. China
| | - Li Shi
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P.R. China
- Centre for Energy, Materials and Telecommunications , Institut National de la Recherche Scientifique , 1650 Boulevard Lionel-Boulet , Varennes , Québec J3X 1S2 , Canada
| | - Dan Wu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P.R. China
| | - Bin Du
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P.R. China
| | - Qin Wei
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering , University of Jinan , Jinan 250022 , P.R. China
| |
Collapse
|
2
|
Londono-Calderon A, Bahena D, Yacaman MJ. Controlled Synthesis of Au@AgAu Yolk-Shell Cuboctahedra with Well-Defined Facets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:7572-7581. [PMID: 27385583 DOI: 10.1021/acs.langmuir.6b01888] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The synthesis of Au@AgAu yolk-shell cuboctahedra nanoparticles formed by galvanic replacement in a seed-mediated method is described. Initially, single-crystal Au seeds are used for the formation of Au@Ag core-shell nanocubes, which serve as the template material for the deposition of an external Au layer. The well-controlled synthesis yields the formation of cuboctahedra nanoparticles with smooth inner and outer Au/Ag surfaces. The deposition/oxidation process is described to understand the formation of cuboctahedra and octahedra nanoparticles. The Au core maintains the initial morphology of the seed and remains static at the center of the yolk-shell because of residual Ag. Structural analysis of the shell indicates intrinsic stacking faults (SFs) near the surface. Energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) compositional analysis show an Au-Ag nonordered alloy forming the shell. The three-dimensional structure of the nanoparticles presented open facets on the [111] as observed by electron tomography SIRT reconstruction over a stack of high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) images. The geometrical model was validated by analyzing the direction of streaks in coherent nanobeam diffraction (NBD). The catalytic activity was evaluated using a model reaction based on the reduction of 4-nitrophenol (4-NTP) by NaBH4 in the presence of Au@AgAu yolk-shell nanoparticles.
Collapse
Affiliation(s)
- Alejandra Londono-Calderon
- Department of Physics and Astronomy, University of Texas at San Antonio , One UTSA Circle, San Antonio, Texas 78249, United States
| | - Daniel Bahena
- Advanced Laboratory of Electron Nanoscopy, Cinvestav, Av. Instituto Politecnico Nacional , 2508, Col. San Pedro Zacatenco, Delegacion Gustavo A. Madero, Mexico D.F. CP 07360, Mexico
| | - Miguel J Yacaman
- Department of Physics and Astronomy, University of Texas at San Antonio , One UTSA Circle, San Antonio, Texas 78249, United States
| |
Collapse
|
3
|
Jia WG, Dai YC, Zhang HN, Lu X, Sheng EH. Synthesis and characterization of gold complexes with pyridine-based SNS ligands and as homogeneous catalysts for reduction of 4-nitrophenol. RSC Adv 2015. [DOI: 10.1039/c5ra01749a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three gold complexes efficiently catalyze 4-nitrophenol reduction to 4-nitroaniline in the presence of NaBH4 under homogeneous conditions in water.
Collapse
Affiliation(s)
- Wei-Guo Jia
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - Yuan-Chen Dai
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - Hai-Ning Zhang
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - Xiaojing Lu
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| | - En-Hong Sheng
- College of Chemistry and Materials Science
- Center for Nano Science and Technology
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecular-Based Materials
| |
Collapse
|
4
|
Zhao XH, Li Q, Ma XM, Xiong Z, Quan FY, Xia YZ. Alginate fibers embedded with silver nanoparticles as efficient catalysts for reduction of 4-nitrophenol. RSC Adv 2015. [DOI: 10.1039/c5ra07821k] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Silver nanoparticles (AgNPs) have attracted much attention as promising catalysts in various electron transfer reactions due to their high catalytic efficiency.
Collapse
Affiliation(s)
- X. H. Zhao
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- PR China
- Collaborative Innovation Center for Marine Biomass Fibers
| | - Q. Li
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- PR China
- Collaborative Innovation Center for Marine Biomass Fibers
| | - X. M. Ma
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- PR China
- Collaborative Innovation Center for Marine Biomass Fibers
| | - Z. Xiong
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- PR China
- Collaborative Innovation Center for Marine Biomass Fibers
| | - F. Y. Quan
- College of Chemistry and Chemical Engineering
- Qingdao University
- Qingdao 266071
- PR China
- Collaborative Innovation Center for Marine Biomass Fibers
| | - Y. Z. Xia
- State Key Laboratory Cultivating Base for New Fiber Materials and Modern Textiles
- Qingdao University
- Qingdao 266071
- PR China
- Collaborative Innovation Center for Marine Biomass Fibers
| |
Collapse
|
5
|
Lv X, Zhu Y, Jiang H, Yang X, Liu Y, Su Y, Huang J, Yao Y, Li C. Hollow mesoporous NiCo2O4 nanocages as efficient electrocatalysts for oxygen evolution reaction. Dalton Trans 2015; 44:4148-54. [DOI: 10.1039/c4dt03803g] [Citation(s) in RCA: 129] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The NiCo2O4 nanocage with a hollow cavity, large roughness and high porosity exhibits an excellent and stable activity for the oxygen evolution reaction (OER) catalysis.
Collapse
Affiliation(s)
- Xiaoming Lv
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yihua Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Hongliang Jiang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiaoling Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yanyan Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yunhe Su
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jianfei Huang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yifan Yao
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| |
Collapse
|