51
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Template-free fabrication strategies for 3D nanoporous Graphene in desalination applications. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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52
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One-step synthesis in deep eutectic solvents of Pt3Sn1-SnO2 alloy nanopore on carbon nanotubes for boosting electro-catalytic methanol oxidation. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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53
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Rapid and unamplified identification of COVID-19 with morpholino-modified graphene field-effect transistor nanosensor. Biosens Bioelectron 2021; 183:113206. [PMID: 33823464 PMCID: PMC8008786 DOI: 10.1016/j.bios.2021.113206] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/16/2021] [Accepted: 03/26/2021] [Indexed: 12/23/2022]
Abstract
SARS-CoV-2 RNA is identified as a pivotal player to bolster energizing zones of COVID-19 detection. Herein, we develop a rapid and unamplified nanosensing platform for detection of SARS-CoV-2 RNA in human throat swab specimens. A gold nanoparticle (AuNP)-decorated graphene field-effect transistor (G-FET) sensor was fabricated, after which complementary phosphorodiamidate morpholino oligos (PMO) probe was immobilized on the AuNP surface. This sensor allowed for highly sensitive testing of SARS-CoV-2 RdRp as PMO does not have charges, leading to low background signal. Not only did the method present a low limit of detection in PBS (0.37 fM), throat swab (2.29 fM), and serum (3.99 fM), but also it achieved a rapid response to COVID-19 patients’ samples within 2 min. The developed nanosensor was capable of analyzing RNA extracts from 30 real clinical samples. The results show that the sensor could differentiate the healthy people from infected people, which are in high agreement with RT-PCR results (Kappa index = 0.92). Furthermore, a well-defined distinction between SARS-CoV-2 RdRp and SARS-CoV RdRp was also made. Therefore, we believe that this work provides a satisfactory, attractive option for COVID-19 diagnosis.
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Su X, Su D, Sang Z, Yan X, Liang J. Shielded SnS2/SnS heterostructures on three-dimensional graphene framework for high-rate and stable sodium-ion storage. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137800] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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55
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Wang Y, Liu S, Yu W. Functionalized Graphene Oxide-Reinforced Chitosan Hydrogel as Biomimetic Dressing for Wound Healing. Macromol Biosci 2021; 21:e2000432. [PMID: 33599084 DOI: 10.1002/mabi.202000432] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/13/2021] [Indexed: 11/07/2022]
Abstract
A novel chitosan composite hydrogel by combining functionalized graphene oxide (CGO) is fabricated. The introduction of CGO significantly improves the mechanical property of CS hydrogel owing to the enhanced interaction between chitosan and CGO sheets. In comparison to the CS-GO composite hydrogel, the compressive stress of the CS-CGO composite hydrogel increases from 1.9 MPa at strain of 70.4% to 4.2 MPa at strain of 78.4%, the tensile stress and strain improve from 141.2 kPa and 134.6% to 300.2 kPa and 165.9%, respectively. An interconnected porous structure is formed in the CS-CGO composite hydrogel and the pore size decreases as the CGO loading increases, which is desirable in improving its mechanical property. Furthermore, the cytotoxicity tests indicate that the CS-CGO composite hydrogel possesses an excellent biocompatibility and can promote the adhesion and proliferation of fibroblasts. In vivo evaluation on full-thickness excision wounds in experimental rat shows that the CS-CGO composite hydrogel significantly accelerates wound healing, and the wound closure rate reaches up to 92.2% after 21 days. A feasible strategy to fabricate an enhanced chitosan composite hydrogel for application in wound healing is offered.
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Affiliation(s)
- Yanjie Wang
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Sijun Liu
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Wei Yu
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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56
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Su F, Zheng S, Liu F, Zhang X, Su F, Wu ZS. Nitrogen-doped holey graphene nanoscrolls for high-energy and high-power supercapacitors. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.07.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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57
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Khalil AME, Memon FA, Tabish TA, Fenton B, Salmon D, Zhang S, Butler D. Performance Evaluation of Porous Graphene as Filter Media for the Removal of Pharmaceutical/Emerging Contaminants from Water and Wastewater. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:E79. [PMID: 33401475 PMCID: PMC7824533 DOI: 10.3390/nano11010079] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 12/12/2022]
Abstract
Graphene and its counterparts have been widely used for the removal of contaminants from (waste)water but with limited success for the removal of pharmaceutical contaminants. Driven by this need, this study reports, for the first time, the removal of pharmaceuticals from real contaminated water samples using porous graphene (PG) as a filter-based column. This work systematically evaluates the performance of PG as a filter medium for the removal of widely consumed pharmaceutical/emerging contaminants (ECs) such as atenolol, carbamazepine, ciprofloxacin, diclofenac, gemfibrozil and ibuprofen. Several factors were investigated in these column studies, including different reactive layer configurations, bed packing heights (5-45 mm), filter sizes (inner diameter 18-40 mm), adsorbent dosages (100-500 mg-PG) and water bodies (distilled water, greywater, and actual effluent wastewater). Sustainable synthesis of PG was carried out followed by its use as a filter medium for the removal of pharmaceuticals at high concentrations (10.5 ± 0.5 mg/L) and trace concentrations (1 mg/L). These findings revealed that the double-layered PG-sand column outperformed a PG single-layered configuration for the removal of most of the ECs. The removal efficiency of ECs from their solutions was improved by increasing PG dosages and filter bed height and size. Although the treatment of mixed pharmaceutical solutions from different water bodies was affected by the negative interference caused by competing water compounds, the treatment of ECs-contaminated greywater was not severely affected. Our findings suggest that PG, as a highly efficient filter medium, could be used for the removal of emerging pharmaceutical contaminants from water and wastewater.
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Affiliation(s)
- Ahmed M. E. Khalil
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK; (T.A.T.); (B.F.); (S.Z.); (D.B.)
- Department of Chemical Engineering, Faculty of Engineering, Cairo University, Giza 12613, Egypt
| | - Fayyaz A. Memon
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK; (T.A.T.); (B.F.); (S.Z.); (D.B.)
| | - Tanveer A. Tabish
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK; (T.A.T.); (B.F.); (S.Z.); (D.B.)
- UCL Cancer Institute, University College London, Bloomsbury, London WC1E 6DD, UK
| | - Ben Fenton
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK; (T.A.T.); (B.F.); (S.Z.); (D.B.)
| | - Deborah Salmon
- College of Life and Environmental Sciences, University of Exeter, Exeter, Devon EX4 4QD, UK;
| | - Shaowei Zhang
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK; (T.A.T.); (B.F.); (S.Z.); (D.B.)
| | - David Butler
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK; (T.A.T.); (B.F.); (S.Z.); (D.B.)
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58
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Padya B, Kali R, Enaganti P, Narasaiah N, Jain P. Facile synthesis and frequency-response behavior of supercapacitor electrode based on surface-etched nanoscaled-graphene platelets. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125587] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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59
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Wu H, Shi C, Zhu Q, Li Y, Xu Z, Wei C, Chen D, Huang X. Capillary-driven blood separation and in-situ electrochemical detection based on 3D conductive gradient hollow fiber membrane. Biosens Bioelectron 2021; 171:112722. [DOI: 10.1016/j.bios.2020.112722] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/10/2020] [Accepted: 10/10/2020] [Indexed: 11/17/2022]
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60
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Fekry AM, Abdel‐Gawad SA, Azab SM, Walcarius A. A Sensitive Electrochemical Sensor for Moxifloxacin Hydrochloride Based on Nafion/Graphene Oxide/Zeolite Modified Carbon Paste Electrode. ELECTROANAL 2020. [DOI: 10.1002/elan.202060355] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Amany M. Fekry
- Chemistry Department, Faculty of Science Cairo University Giza 12613 Egypt
- Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement (LCPME), UMR 7564 CNRS – Université de Lorraine 405 rue de Vandoeuvre 54600 Villers-les-Nancy France
| | | | - Shereen M. Azab
- Pharmaceutical Chemistry Dept. National Organization for Drug Control and Research [NODCAR] 6 Abu Hazem Street, Pyramids Ave, 29 Giza postcode is missing Egypt
| | - Alain Walcarius
- Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement (LCPME), UMR 7564 CNRS – Université de Lorraine 405 rue de Vandoeuvre 54600 Villers-les-Nancy France
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61
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Cui R, Xiao Y, Li C, Han Y, Lv G, Zhang Z. Polyaniline/reduced graphene oxide foams as metal-free cathodes for stable lithium-oxygen batteries. NANOTECHNOLOGY 2020; 31:445402. [PMID: 32668419 DOI: 10.1088/1361-6528/aba658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Lithium-oxygen batteries (LOBs) are considered as next-generation energy storage devices owing to their high-energy densities, yet they generally suffer from low actual specific capacity and poor cycle performance. To solve these issues, a range of electrocatalysts have been introduced in the cathode to reduce the overpotential during charge/discharge cycles and minimize unwanted side reactions. Due to relative high costs and limited reserves of noble metals and their compounds, it is important to develop low-cost and efficient metal-free electrocatalysts. Here, we report a simple method to prepare three-dimensional porous polyaniline (PANI)/reduced graphene oxide foams (PPGFs) with different PANI contents via a two-step self-assembly process. When these foams are tested as the cathode in LOBs, the device using the PPGF with 50% PANI content exhibits a discharge capacity up to 36 010 mAh g-1 and an excellent cycling stability (260 cycles at 1000 mAh g-1 and 500 cycles at 500 mAh g-1), provid ing new insights into the design of next-generation metal-free cathodes for LOBs.
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Affiliation(s)
- Ranran Cui
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
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62
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63
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Mohd Firdaus R, Berrada N, Desforges A, Mohamed AR, Vigolo B. From 2D Graphene Nanosheets to 3D Graphene-based Macrostructures. Chem Asian J 2020; 15:2902-2924. [PMID: 32779360 DOI: 10.1002/asia.202000747] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 08/09/2020] [Indexed: 12/29/2022]
Abstract
The combination of exceptional functionalities offered by 3D graphene-based macrostructures (GBMs) has attracted tremendous interest. 2D graphene nanosheets have a high chemical stability, high surface area and customizable porosity, which was extensively researched for a variety of applications including CO2 adsorption, water treatment, batteries, sensors, catalysis, etc. Recently, 3D GBMs have been successfully achieved through few approaches, including direct and non-direct self-assembly methods. In this review, the possible routes used to prepare both 2D graphene and interconnected 3D GBMs are described and analyzed regarding the involved chemistry of each 2D/3D graphene system. Improvement of the accessible surface of 3D GBMs where the interface exchanges are occurring is of great importance. A better control of the chemical mechanisms involved in the self-assembly mechanism itself at the nanometer scale is certainly the key for a future research breakthrough regarding 3D GBMs.
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Affiliation(s)
- Rabita Mohd Firdaus
- School of Chemical Engineering, Engineering Campus Universiti Sains, Malaysia, 14300, Nibong Tebal, Seberang, Perai Selatan, P., Pinang, Malaysia.,Université de Lorraine, CNRS, IJL, F-54000, Nancy, France
| | - Nawal Berrada
- Université de Lorraine, CNRS, IJL, F-54000, Nancy, France
| | | | - Abdul Rahman Mohamed
- School of Chemical Engineering, Engineering Campus Universiti Sains, Malaysia, 14300, Nibong Tebal, Seberang, Perai Selatan, P., Pinang, Malaysia
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64
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Tian H, Guo J, Pang Z, Hu M, He J. A sulfur, nitrogen dual-doped porous graphene nanohybrid for ultraselective Hg(ii) separation over Pb(ii) and Cu(ii). NANOSCALE 2020; 12:16543-16555. [PMID: 32734977 DOI: 10.1039/d0nr04558f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two-dimensional (2D) porous graphene is attractive as a high-permeability membrane for ionic and molecular separation. Here, we propose a sulfur, nitrogen dual-doped 2D porous graphene (SNPG) nanohybrid by adopting a facile one-step process. The resulting sandwich-like porous nanohybrid features uniform ion-gated nanopores for efficient transport of target heavy metal ions while blocking undesired ions, as well as abundant multi-binding ligands for selectively chelating permeated heavy metal ions. We show from systematic experiments that this SNPG nanohybrid exhibits outstanding selectivity and ability to separate Hg(ii) ions in mixtures with eight other metal ions. An excellent uptake capability (803 mg g-1) and high removal ability (>99%) within the entire pH range of 2-10 can be obtained. Given the specific 2D porous nanostructure and specific binding ligands, SNPG exhibits an ultrahigh separation factor towards Hg(ii) that is up to four orders of magnitude higher than those of Pb(ii), Cd(ii) and Cu(ii) ions, significantly higher than those of most reported adsorbents. These findings provide a new opportunity to develop selective materials and devices for applications such as efficient recognition, extraction and separation of target metal ions in complex aqueous environments.
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Affiliation(s)
- Hua Tian
- Functional Nanomaterials Laboratory, Center for Micro/Nanomaterials and Technology, and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
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65
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Zhang X, Ding K, Weng B, Liu S, Jin W, Ji X, Hu J. Coral-like carbon-wrapped NiCo alloys derived by emulsion aggregation strategy for efficient oxygen evolution reaction. J Colloid Interface Sci 2020; 573:96-104. [DOI: 10.1016/j.jcis.2020.03.124] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/27/2020] [Accepted: 03/31/2020] [Indexed: 10/24/2022]
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66
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Chen Y, Ji W, Gao J, Yan K, Zhang J. A self-powered aptasensor using the capacitor-amplified signal of a photofuel cell and a portable digital multimeter readout. Chem Commun (Camb) 2020; 56:10034-10037. [PMID: 32728679 DOI: 10.1039/d0cc03745a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A self-powered aptasensor for streptomycin detection was constructed with a photofuel cell combined with a capacitor and a digital multimeter. The sensitivity of the proposed sensor was 8.7 times of that without using a capacitor amplifier circuit.
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Affiliation(s)
- Yingxu Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
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67
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Li KC, Lu MY, Nguyen HT, Feng SW, Artemkina SB, Fedorov VE, Wang HC. Intelligent Identification of MoS 2 Nanostructures with Hyperspectral Imaging by 3D-CNN. NANOMATERIALS 2020; 10:nano10061161. [PMID: 32545726 PMCID: PMC7353172 DOI: 10.3390/nano10061161] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 02/07/2023]
Abstract
Increasing attention has been paid to two-dimensional (2D) materials because of their superior performance and wafer-level synthesis methods. However, the large-area characterization, precision, intelligent automation, and high-efficiency detection of nanostructures for 2D materials have not yet reached an industrial level. Therefore, we use big data analysis and deep learning methods to develop a set of visible-light hyperspectral imaging technologies successfully for the automatic identification of few-layers MoS2. For the classification algorithm, we propose deep neural network, one-dimensional (1D) convolutional neural network, and three-dimensional (3D) convolutional neural network (3D-CNN) models to explore the correlation between the accuracy of model recognition and the optical characteristics of few-layers MoS2. The experimental results show that the 3D-CNN has better generalization capability than other classification models, and this model is applicable to the feature input of the spatial and spectral domains. Such a difference consists in previous versions of the present study without specific substrate, and images of different dynamic ranges on a section of the sample may be administered via the automatic shutter aperture. Therefore, adjusting the imaging quality under the same color contrast conditions is unnecessary, and the process of the conventional image is not used to achieve the maximum field of view recognition range of ~1.92 mm2. The image resolution can reach ~100 nm and the detection time is 3 min per one image.
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Affiliation(s)
- Kai-Chun Li
- Department of Mechanical Engineering and Advanced Institute of Manufacturing with High Tech Innovations, National Chung Cheng University, 168, University Rd., Min Hsiung, Chia Yi 62102, Taiwan; (K.-C.L.); (H.T.N.)
| | - Ming-Yen Lu
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, Taiwan;
| | - Hong Thai Nguyen
- Department of Mechanical Engineering and Advanced Institute of Manufacturing with High Tech Innovations, National Chung Cheng University, 168, University Rd., Min Hsiung, Chia Yi 62102, Taiwan; (K.-C.L.); (H.T.N.)
| | - Shih-Wei Feng
- Department of Applied Physics, National University of Kaohsiung, 700 Kaohsiung University Rd., Nanzih District, Kaohsiung 81148, Taiwan;
| | - Sofya B. Artemkina
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (S.B.A.); (V.E.F.)
- Department of Natural Sciences, Novosibirsk State University, 1, Pirogova str., 630090 Novosibirsk, Russia
| | - Vladimir E. Fedorov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (S.B.A.); (V.E.F.)
- Department of Natural Sciences, Novosibirsk State University, 1, Pirogova str., 630090 Novosibirsk, Russia
| | - Hsiang-Chen Wang
- Department of Mechanical Engineering and Advanced Institute of Manufacturing with High Tech Innovations, National Chung Cheng University, 168, University Rd., Min Hsiung, Chia Yi 62102, Taiwan; (K.-C.L.); (H.T.N.)
- Correspondence:
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68
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A high performance and flexible in-plane asymmetric micro-supercapacitor (MSC) fabricated with functional electrochemical-exfoliated graphene. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114169] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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69
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Liu Q, Zhong H, Chen M, Zhao C, Liu Y, Xi F, Luo T. Functional nanostructure-loaded three-dimensional graphene foam as a non-enzymatic electrochemical sensor for reagentless glucose detection. RSC Adv 2020; 10:33739-33746. [PMID: 35519067 PMCID: PMC9056722 DOI: 10.1039/d0ra05553k] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 09/02/2020] [Indexed: 12/18/2022] Open
Abstract
Non-enzymatic and reagentless electrochemical sensors for convenient and sensitive detection of glucose are highly desirable for prevention, diagnosis and treatment of diabetes owing to their unique merits of simplicity and easy operation. Facile fabrication of a three-dimensional (3D) sensing interface with non-enzymatic recognition groups and an immobilized electrochemical probe remains challenge. Herein, a novel non-enzymatic electrochemical sensor was developed for the sensitive and reagentless detection of glucose by loading functional nanostructure on 3D graphene. Monolithic and macroporous 3D graphene (3DG) foam grown by chemical vapor deposition (CVD) served as the electrode scaffold. Prussian blue (PB) and gold nanoparticles (AuNPs) were first co-electrodeposited on 3DG (3DG/PB-AuNPs) as immobilized signal indicator and electron conductor. After a polydopamine (PDA) layer was introduced on 3DG/PB-AuNPs via facile self-polymerization of dopamine to stabilize internal PB probes and offer chemical reducibility, the second layer of AuNPs was in situ formed to assemble the recognition ligand, mercaptobenzoboric acid (MPBA). Owing to the high stability of PB and good affinity between MPBA and glucose, the non-enzymatic sensor was able to be used in reagentless detection of glucose with high selectivity, wide linear range (5 μM–65 μM) and low detection limit (1.5 μM). Furthermore, the sensor was used for the detection of glucose level in human serum samples. A non-enzymatic electrochemical sensor was fabricated by loading functional nanostructure on three-dimensional graphene foam for reagentless detection of glucose with high sensitivity and stability.![]()
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Affiliation(s)
- Qianshi Liu
- Guangxi Medical University Cancer Hospital
- Nanning 530021
- PR China
| | - Huage Zhong
- Guangxi Medical University Cancer Hospital
- Nanning 530021
- PR China
| | - Miao Chen
- Guangxi Medical University Cancer Hospital
- Nanning 530021
- PR China
| | - Chang Zhao
- Guangxi Medical University Cancer Hospital
- Nanning 530021
- PR China
| | - Yan Liu
- Guangxi Medical University Cancer Hospital
- Nanning 530021
- PR China
| | - Fengna Xi
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- PR China
| | - Tao Luo
- Guangxi Medical University Cancer Hospital
- Nanning 530021
- PR China
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Yang N, Zhang H. Nanocarbon Chemistry. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1905367. [PMID: 31773902 DOI: 10.1002/smll.201905367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- Nianjun Yang
- Institute of Materials Engineering, University of Siegen, 57076, Siegen, Germany
| | - Hua Zhang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
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