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Lin S, Wang J, Wang X, Xia S, Wu L. Simple and sensitive sandwich-like electrochemical immunosensing strategy for D-dimer based on cyclodextrin-carbon nanotube and nanogold-ferrocene. Heliyon 2024; 10:e28793. [PMID: 38601570 PMCID: PMC11004742 DOI: 10.1016/j.heliyon.2024.e28793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/25/2024] [Accepted: 03/25/2024] [Indexed: 04/12/2024] Open
Abstract
D-dimer is a very important biomarker about sepsis, pulmonary thromboembolism and atherosclerosis, thus designing effective and sensitive method for its detection is of great significance. Herein, by synthesizing β-cyclodextrin-carbon nanotube nanohybrid (CNTs-CD) as the carrier to assemble the initial antibody (Ab1) of D-dimer, immobilizing secondary antibody (Ab2) and sulfydryl ferrocene (Fc) on the nanogold (Au) particles surface as the signaling amplifier (Ab2-Au-Fc), a low cost, simple, sensitive and effective sandwich-like electrochemical immunosensing (SEI) platform of D-dimer was proposed in this work for the first time. Briefly, CNTs shows large specific area and superior electroconductivity, and CD provides high host guest recognition ability that could bound with Ab1; meanwhile, the Fc probe offers stable current response which are proportionable positively to the level of D-dimer. Under the best conditions, the designed SEI platform exhibits prominent analytical performances for D-dimer: low detection limit of 3.0 ng mL-1 and large linearity of 10.0-800.0 ng mL-1. In addition, the selectivity, stability and reproducibility as well as real applications of the proposed SEI assay were evaluated and the obtained results are satisfactory.
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Affiliation(s)
| | | | - Xiaoqin Wang
- Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, PR China
| | - Suqin Xia
- Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, PR China
| | - Ling Wu
- Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, PR China
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Li Q, Nan K, Wang W, Zheng H, Wang Y. Electrostatic self-assembly sandwich-like 2D/2D NiFe-LDH/MXene heterostructure for strong microwave absorption. J Colloid Interface Sci 2023; 648:983-993. [PMID: 37331079 DOI: 10.1016/j.jcis.2023.06.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/29/2023] [Accepted: 06/09/2023] [Indexed: 06/20/2023]
Abstract
MXene has great application potential in electromagnetic (EM) wave absorbers because of its high attenuation ability; however, self-stacking and excessively high conductivity are major obstacles to its widespread use. To address these issues, a NiFe layered double hydroxide (LDH)/ MXene composite with two-dimensional (2D)/2D sandwich-like heterostructure was constructed through electrostatic self-assembly. The NiFe-LDH not only acts as an intercalator to prevent self-stacking of the MXene nanosheets, but also serves as a low-dielectric choke valve to optimize impedance matching. At a thickness of 2 mm and filler loading of 20 wt%, the minimum reflection loss (RLmin) value could reach -58.2 dB, and the absorption mechanism was analyzed based on multiple reflection, dipole/interfacial polarization, impedance matching, and synergy between dielectric and magnetic losses. Furthermore, the simulation of the radar cross section (RCS) further confirmed the efficient absorption properties and application prospects of the present material. Our work demonstrates that designing sandwich structures based on 2D MXene is an effective way to improve the performance of EM wave absorbers.
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Affiliation(s)
- Qingwei Li
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Kai Nan
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, China.
| | - Wei Wang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Hao Zheng
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Yan Wang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China.
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Zhang Z, Karimi-Maleh H. In situ synthesis of label-free electrochemical aptasensor-based sandwich-like AuNPs/PPy/Ti 3C 2T x for ultrasensitive detection of lead ions as hazardous pollutants in environmental fluids. Chemosphere 2023; 324:138302. [PMID: 36871797 DOI: 10.1016/j.chemosphere.2023.138302] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/24/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
The monitoring of hazardous pollutants in environmental fluids is one of main stretaegy in investigation of water and soil quality. Metal ions are one of main and dangerius materials in water sampels and one of the main causes of environmental problems. Therefore, many of environmental researchers focused on fabrication of highly sensitive sensor to ion hazardous pollutants environmental fluids. The encapsulation of 2D MXenes with other stable materials has proven to be an effective method for enhancing their stability and electrochemical properties. In this work, a sandwich-like nanocomposite structure, AuNPs/PPy/Ti3C2Tx, was designed and synthesized via a facile method of one-step layer-by-layer self-assembly. The morphology and structure of the prepared nanocomposites are characterized with various methods such as scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). Ti3C2Tx as a substrate played a significant role in the synthesis and alignment of PPy and AuNPs growth. The nanocomposites have maximized the benefits of the inorganic AuNPs and organic PPy materials, enhancing their stability and electrochemical performance. Meanwhile, AuNPs have given the nanocomposite the ability to form covalent bonds with biomaterials via the Au-S bond. Thus, a novel electrochemical aptasensor was developed based on AuNPs/PPy/Ti3C2Tx for the sensitive and selective detection of Pb2+. It demonstrated a wide linear range from 5 × 10-14 to 1 × 10-8 M with a low LOD of 1 × 10-14 M (S/N = 3). Additionally, the developed aptasensor exhibited excellent selectivity and stability and successfully used to sensing of Pb2+ in environmental fluids such as NongFu Spring and tap water.
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Affiliation(s)
- Zhouxiang Zhang
- School of Resources and Environment, University of Electronic Science and Technology of China, 611731, Xiyuan Ave, Chengdu, China
| | - Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronic Science and Technology of China, 611731, Xiyuan Ave, Chengdu, China.
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Wang Y, Lu J, Zhao Y, Lv H, Zhou Z, Wei H, Chen Z. Well-designed sophisticated structure of sandwich-like CC@NiAl-LDH@GO@NiCo-LDH material with unique advantages for high performance and practicality hybrid quasi-solid-state supercapacitors. J Colloid Interface Sci 2021; 609:114-129. [PMID: 34894546 DOI: 10.1016/j.jcis.2021.11.128] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/18/2021] [Accepted: 11/21/2021] [Indexed: 01/19/2023]
Abstract
A sandwich-like flexible architecture electrode material composed of NiAl-LDH nanoplates grown on carbon cloths (CC), coupled with GO interlayer and NiCo-LDH nanowire on the interlayer was successfully assembled via hydrothermal and chemical bath deposition (denoted as CC@NiAl-LDH@GO@NiCo-LDH). The promising combination of NiAl-LDH, graphene and NiCo-LDH forming a multilayer structure through electrostatic absorption and in-situ growth process which endow a high mass loading superiority and synergistic effect for supercapacitors. In addition, the interspace inside the sandwich-like architecture constructed by the graphene and the NiAl-LDH/ NiCo-LDH nano-flakes contribute to alleviate of the volume expansion during the cycling process and promote the diffusion rate of ions. The CC@NiAl-LDH@GO@NiCo-LDH material demonstrates excellent electrochemical performance which exhibit remarkable specific capacitance of 2359.8F·g-1 (14.2F·cm-2) at 1 A·g-1 (6 mA·cm-2) and outstanding capacitance retentions of 93.1% after 1500 cycles. Subsequently, the CC@NiAl-LDH@GO@NiCo-LDH material was used as cathode material to fabricate a hybrid quasi-solid-state supercapacitor that exhibits a high energy density of 52.0 Wh·kg-1 at 796.7 W·kg-1 and 38.4 Wh·kg-1 at 12015 W·kg-1, revealing its potential and viability for commercial applications. Furthermore, the hybrid quasi-solid-state supercapacitor can be applied under different extreme operating conditions such as bending, twisting, sour/alkali soaking, ice bathing, warm bathing, hammering and cutting conditions. It is predictable that the unique sandwich-like structure will be an extremely promising electrode material for high-performance supercapacitors.
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Affiliation(s)
- Yan Wang
- School of Optoelectronic Science and Engineering of UESTC, University of Electronic Science and Technology of China, Jianshe North Road 4, Chengdu 610054, China; Sichuan Province Key Laboratory of Display Science and Technology, Jianshe North Road 4, Chengdu 610054, China.
| | - Jiatong Lu
- School of Optoelectronic Science and Engineering of UESTC, University of Electronic Science and Technology of China, Jianshe North Road 4, Chengdu 610054, China; Sichuan Province Key Laboratory of Display Science and Technology, Jianshe North Road 4, Chengdu 610054, China
| | - Yang Zhao
- School of Optoelectronic Science and Engineering of UESTC, University of Electronic Science and Technology of China, Jianshe North Road 4, Chengdu 610054, China; Sichuan Province Key Laboratory of Display Science and Technology, Jianshe North Road 4, Chengdu 610054, China
| | - Huifang Lv
- School of Optoelectronic Science and Engineering of UESTC, University of Electronic Science and Technology of China, Jianshe North Road 4, Chengdu 610054, China; Sichuan Province Key Laboratory of Display Science and Technology, Jianshe North Road 4, Chengdu 610054, China
| | - Zhiyu Zhou
- School of Optoelectronic Science and Engineering of UESTC, University of Electronic Science and Technology of China, Jianshe North Road 4, Chengdu 610054, China; Sichuan Province Key Laboratory of Display Science and Technology, Jianshe North Road 4, Chengdu 610054, China
| | - Hualiang Wei
- School of Optoelectronic Science and Engineering of UESTC, University of Electronic Science and Technology of China, Jianshe North Road 4, Chengdu 610054, China; Sichuan Province Key Laboratory of Display Science and Technology, Jianshe North Road 4, Chengdu 610054, China
| | - Zexiang Chen
- School of Optoelectronic Science and Engineering of UESTC, University of Electronic Science and Technology of China, Jianshe North Road 4, Chengdu 610054, China; Sichuan Province Key Laboratory of Display Science and Technology, Jianshe North Road 4, Chengdu 610054, China.
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Zhang B, Yao R, Hu C, Maitz MF, Wu H, Liu K, Yang L, Luo R, Wang Y. Epigallocatechin gallate mediated sandwich-like coating for mimicking endothelium with sustained therapeutic nitric oxide generation and heparin release. Biomaterials 2020; 269:120418. [PMID: 33143876 DOI: 10.1016/j.biomaterials.2020.120418] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 09/15/2020] [Accepted: 09/20/2020] [Indexed: 12/22/2022]
Abstract
In-stent restenosis after stenting is generally characterized by an inflammatory response, excessive proliferation of smooth muscle cells, and delayed healing of the endothelium layer. In this study, inspired by catechol/gallol surface chemistry, a sandwich-like layer-by-layer (LBL) coating was developed using chitosan and heparin as polyelectrolytes, along with the embedding of an epigallocatechin gallate/copper (EGCG/Cu) complex. The embedding of EGCG stabilized the coating by various intermolecular interactions in the LBL coating (e.g., π-π stacking, weak intermolecular crosslinking, and enriched hydrogen bonding) and supported the sustained release of the cargo heparin over 90 days. This design enabled a biomimetic endothelium function in terms of the sustained release of heparin and continuous in situ generation of nitric oxide, driven by the catalytic decomposition of endogenous S-nitrostothiols by copper ions. The result showed enhanced durability of anticoagulation and suppressed inflammatory response. Moreover, the "sandwich-like" coating supported the growth of endothelial cells and up-regulated the protein expression of vascular endothelial growth factor, while effectively suppressing the proliferation and migration of smooth muscle cells (SMCs) via the up-regulation of cyclic guanosine monophosphate. Ex vivo and in vivo experiments demonstrated the effectiveness of the sandwich-like coating in preventing thrombosis formation, suppressing the growth of SMCs, reducing the infiltration and activation of inflammatory cells, and ultimately achieving rapid in situ endothelialization. Hence, the EGCG-assisted sandwich-like coating might be used as a robust and versatile surface modification strategy for implantable cardiovascular devices.
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Affiliation(s)
- Bo Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
| | - Ruijuan Yao
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
| | - Cheng Hu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
| | - Manfred F Maitz
- Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden, Dresden, 01069, Germany; Key Lab. for Advanced Technologies of Materials, Ministry of Education, School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Haoshuang Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
| | - Kunpeng Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
| | - Li Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
| | - Rifang Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.
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Li Y, Gai T, Shao L, Tang H, Li R, Yang S, Wang S, Wu Q, Ren Y. Synthesis of sandwich-like Mn 3O 4@reduced graphene oxide nano-composites via modified Hummers' method and its application as uranyl adsorbents. Heliyon 2019; 5:e01972. [PMID: 31294118 PMCID: PMC6595401 DOI: 10.1016/j.heliyon.2019.e01972] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 04/09/2019] [Accepted: 06/17/2019] [Indexed: 11/18/2022] Open
Abstract
Efficient and sustainable remediation technologies for uranium have recently been gaining more and more interest. Adsorption techniques are facile, effective and universal for kinds of heavy metal ions. In this paper, sandwich-like Mn3O4@reduced graphene oxide (Mn3O4@G) nano-composites were prepared facilely and greenly by adding NaOH solution into crude graphite oxide suspension prepared via the Hummers' method to modify the pH. The Mn3O4@G nanocomposites possess a reasonable maximum equilibrium adsorption quantity 195.6 mg [U] g-1. Moreover, the magnetism of Mn3O4@G makes it easy to remove Mn3O4@G from water by strong magnet field.
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