1
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Yang K, Han F, Jin Y, Li X. C-GCS@ZIF-F/PL based electrochemical sensor for rapid and ultra-sensitive detection of rutin in foods. Food Chem 2024; 460:140382. [PMID: 39126741 DOI: 10.1016/j.foodchem.2024.140382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/28/2024] [Accepted: 07/05/2024] [Indexed: 08/12/2024]
Abstract
Herein, a stable and ultra-sensitive rutin electrochemical sensor was successfully developed. This sensor based on glassy carbon electrode (GCE) modified with C-GCS@ZIF-F/PL nanocomposite, which was made of thermally carbonized glucose (GCS) doped with flower-like ZIF (ZIF-F) and pencil lead (PL). The electrochemical response of rutin was considerably significant at C-GCS@ZIF-F/PL/GCE, demonstrating favorable conductivity and electrocatalytic properties for detection of rutin. Under optimal conditions, the linear range is 0.1-100 μM, with a low detection limit (LOD) of 0.0054 μM. It also exhibits excellent stability, reproducibility, as well as selectivity over common interfering ions such as Na+, uric acid, quercetin and riboflavin, etc. Meanwhile, the practical utility of developed sensor was evaluated in food samples including honey, orange, and buckwheat tea, achieving satisfactory recovery rates ranging from 98.2% to 101.7%. This paper introduces a novel technique for the detection of rutin in foods.
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Affiliation(s)
- Kaifeng Yang
- Department of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China
| | - Fangming Han
- Department of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China
| | - Yafeng Jin
- Department of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China.
| | - Xiaobo Li
- Department of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China.
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2
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Sun L, Zhang Z, Wang J, Hui N. A dual-mode electrochemical biosensor based on GO-Fe 3O 4 doped PEDOT nanocomposite for the ultrasensitive assay of microRNA. Bioelectrochemistry 2024; 160:108786. [PMID: 39111272 DOI: 10.1016/j.bioelechem.2024.108786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/17/2024] [Accepted: 07/29/2024] [Indexed: 09/15/2024]
Abstract
MicroRNA, as a distinctive biomarker, plays a crucial role in the early prognosis and diagnosis of numerous severe diseases. However, due to its inherent properties such as low abundance, small size, and high sequence similarity, the sensitive and accurate detection of microRNA remains a major challenge. Herein, a dual-mode electrochemical biosensing platform was developed for microRNA detection, based on poly(3,4-ethylenedioxythiophene) (PEDOT) doped with graphene oxide-Fe3O4 (GO-Fe3O4) nanocomposite. The GO-Fe3O4/PEDOT composite demonstrated a porous microstructure, outstanding conductivity, and robust catalytic activity towards nitrite. It was electrodeposited onto the electrode surface in a one-step process using the cyclic voltammetry method (CV). The microRNA biosensor was obtained by anchoring DNA with amino groups to the GO-Fe3O4/PEDOT layer through the formation of amide bonds. The designed dual-mode microRNA biosensor demonstrated a broad linear range spanning from 10-15 M to 10-6 M, with low detection limits of 5.18 × 10-15 M and 7.36 × 10-15 M when using chronocoulometry (CC) and amperometric i-t curve (i-t) modes, respectively. Furthermore, a dual-mode electrochemical biosensor has been successfully developed and utilized for the detection of microRNA in human serum, demonstrating its potential for precise and sensitive microRNA detection and its practical application value in clinical medicine.
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Affiliation(s)
- Luyu Sun
- Qingdao Agricultural University, Qingdao, PR China
| | | | | | - Ni Hui
- Qingdao Agricultural University, Qingdao, PR China.
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3
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Liu Z, Li J, Li Y, Wang Y, Deng K, Xie Y, Zhao P, Fei J. Electrochemical sensing platform using reduced graphene oxide and Sn MOF-derived hollow cubic composites for sensitive detection of catechol in environmental water samples. Talanta 2024; 279:126602. [PMID: 39059068 DOI: 10.1016/j.talanta.2024.126602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 07/12/2024] [Accepted: 07/22/2024] [Indexed: 07/28/2024]
Abstract
Catechol, a polyphenolic molecule and significant organic chemical intermediate, is a highly dangerous environmental contaminant due to its unpredictable nature and potential harm to both humans and the environment. This study presents the development of Sn MOF@rGO-650, identified as a hollow cube by SEM and TEM, created by carbonizing rGO on the surface of Sn MOF after in situ encapsulation. The Sn MOF@rGO-650 modified glassy carbon electrode was successfully constructed for the electrochemical detection of catechol. Under optimal conditions, the sensor exhibited a detection limit of 33 nM, a linear range of 0.20 μM-28 μM, and good long-term stability and reproducibility. This work proves for the first time that Sn MOF@rGO-650 composites can effectively detect catechol in real environmental water samples, achieving recoveries between 95.7 % and 104.8 %, and is validated in UV spectroscopy, which highlights its potential for practical applications.
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Affiliation(s)
- Zhifang Liu
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China
| | - Jiao Li
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China
| | - Yang Li
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China
| | - Yilin Wang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China
| | - Kunxiang Deng
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China
| | - Yixi Xie
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Xiangtan University, Xiangtan, 411105, PR China
| | - Pengcheng Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China.
| | - Junjie Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China; Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, PR China.
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4
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Lang G, Feng B, Chen X, Zhou Z, Zhao Z, Deng Q, Jiang Z, Feng J. Anchoring CeF 3 nanoparticles on porous carbon nanofibers as self-supporting electrodes for highly sensitive detection of nitrite. Talanta 2024; 275:126133. [PMID: 38669957 DOI: 10.1016/j.talanta.2024.126133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/26/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024]
Abstract
Designing a working electrode is crucial for the reliable electrochemistry detection, which is applied to detect toxic and harmful substances sensitively and rapidly. Here we report the polytetrafluoroethylene decomposition-assisted electrospinning, a combination method for creating nanopore and synthesizing CeF3, to prepare the self-supporting electrode of CeF3 nanoparticles-anchored on porous carbon nanofibers (CeF3/PCNFs) for highly sensitive nitrite detection. The CeF3/PCNFs exhibits remarkable electroactivity toward nitrite detection, featuring a wide concentration range (0.5 μM-6 mM), low detection limit (10 nm) and high sensitivity (2093 μA mM-1 cm-2). It also exhibits excellent selectivity, stability and reproducibility, and powerful reliability for nitrite detection in saliva, pickles, sausages, chips, river water and tap water. This study provides a facile strategy to prepare the metal fluoride-based self-supporting electrode, which overcomes the disadvantages of chemically modified electrodes unstable and poorly reproducible, and is significant for clinical diagnosis, food safety and environmental monitoring.
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Affiliation(s)
- Gang Lang
- School of Science, Xihua University, Chengdu, 610039, PR China
| | - Bo Feng
- Southwest Computer Co., Ltd, Chongqing, 400060, PR China
| | - Xiaomei Chen
- School of Science, Xihua University, Chengdu, 610039, PR China
| | - Zhiting Zhou
- School of Science, Xihua University, Chengdu, 610039, PR China
| | - Zhicheng Zhao
- School of Science, Xihua University, Chengdu, 610039, PR China
| | - Qin Deng
- School of Science, Xihua University, Chengdu, 610039, PR China
| | - Zhenju Jiang
- School of Science, Xihua University, Chengdu, 610039, PR China; Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, PR China; Research and Application of Small Organic Chiral Molecules Key Laboratory of Yibin City, Yibin Research Institute of Xihua University, Yibin, 644000, PR China
| | - Jing Feng
- School of Science, Xihua University, Chengdu, 610039, PR China; Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, PR China; Research and Application of Small Organic Chiral Molecules Key Laboratory of Yibin City, Yibin Research Institute of Xihua University, Yibin, 644000, PR China.
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5
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Peng M, Chen C, Ouyang Q, Liu S, Zhang J, Fei J. A novel electrochemical sensor for detection of luteolin in food based on 3D networked electrically interconnected SiO 2@GO/MXene composite. Mikrochim Acta 2024; 191:484. [PMID: 39060755 DOI: 10.1007/s00604-024-06572-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 07/13/2024] [Indexed: 07/28/2024]
Abstract
Luteolin (Lu), a compound with various biochemical and pharmacological activities beneficial to human health, has attracted researchers' attention. This study proposes an efficient and scalable method using ultrasound to intercalate graphene oxide (GO)-coated silica spheres (SiO2) into MXenes, resulting in a 3D conductive interconnected structural composite material. Characterization of the composite material was conducted using SEM, TEM, XRD, XPS, and Raman spectroscopy. MXenes exhibit excellent electrical conductivity, and the SiO2@GO surface with abundant hydroxyl and silanol groups provides high-binding active sites that facilitate Lu molecule enrichment. The formation of the 3D conductive interconnected structural composites enhances charge transport, significantly improving sensor sensitivity. Consequently, the sensor demonstrates excellent detection capabilities (detection range 0.03-7000 nM, detection limit 12 pM). Furthermore, the sensor can be applied to quantitative determination of Lu in real samples, including chrysanthemums, Jiaduobao, honeysuckle, purple perilla, and peanut shells, achieving recoveries between 98.2 and 104.7%.
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Affiliation(s)
- Mei Peng
- School of Materials and Chemical Engineering, Hunan City University, Yiyang, 413000, People's Republic of China
| | - Chao Chen
- School of Materials and Chemical Engineering, Hunan City University, Yiyang, 413000, People's Republic of China.
| | - Qiaoling Ouyang
- School of Materials and Chemical Engineering, Hunan City University, Yiyang, 413000, People's Republic of China
| | - Saiwen Liu
- School of Materials and Chemical Engineering, Hunan City University, Yiyang, 413000, People's Republic of China
- Key Laboratory of Low Carbon and Environmental Functional Materials of College of Hunan Province, Yiyang, 413000, Hunan, People's Republic of China
| | - Jin Zhang
- School of Materials and Chemical Engineering, Hunan City University, Yiyang, 413000, People's Republic of China
- Key Laboratory of Low Carbon and Environmental Functional Materials of College of Hunan Province, Yiyang, 413000, Hunan, People's Republic of China
| | - Junjie Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.
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6
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Chen J, Fei M, Ni M, Wang Y, Liu Z, Xie Y, Zhao P, Zhang Z, Fei J. Multilayer Ti 3C 2-CNTs-Au Loaded with Cyclodextrin-MOF for Enhanced Selective Detection of Rutin. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310217. [PMID: 38361221 DOI: 10.1002/smll.202310217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/25/2024] [Indexed: 02/17/2024]
Abstract
In this work, multi-layer Ti3C2 - carbon nanotubes - gold nanoparticles (Ti3C2-CNTs-Au) and cyclodextrin metal-organic framework - carbon nanotubes (CD-MOF-CNTs) have been prepared by in situ growth method and used to construct the ultra-sensitive rutin electrochemical sensor for the first time. Among them, the large number of metal active sites of Ti3C2, the high electron transfer efficiency of CNTS, and the good catalytic properties of AuNPs significantly enhance the electrochemical properties of the composite carbon nanomaterials. Interestingly, CD-MOF has a unique host-guest recognition and a large number of cavities, molecular gaps, and surface reactive groups, which gives the composite outstanding accumulation properties and selectivity for rutin. Under the optimized conditions, the constructed novel sensor has satisfactory detection performance for rutin in the range of 2 × 10-9 to 8 × 10-7 M with a limit of detection of 6.5 × 10-10 M. In addition, the sensor exhibits amazing anti-interference performance against rutin in some flavonoid compounds and can be used to test natural plant samples (buckwheat, Cymbopogon distans, and flos sophorae immaturus). This work has promising applications in the field of environmental and food analysis, and exploring new directions for the application of Mxene-based composites.
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Affiliation(s)
- Jia Chen
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Maoheng Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Meijun Ni
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Yilin Wang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Zhifang Liu
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Yixi Xie
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Pengcheng Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Zhiyong Zhang
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, P. R. China
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, School of Electronics, Peking University, Beijing, 100871, P. R. China
| | - Junjie Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, P. R. China
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7
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Zhao J, Li X, Yin Y, Xiong R, Ling G, Zhang P. Applications of cerium-based materials in food monitoring. Food Chem 2024; 444:138639. [PMID: 38330609 DOI: 10.1016/j.foodchem.2024.138639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/18/2024] [Accepted: 01/30/2024] [Indexed: 02/10/2024]
Abstract
With the rapid development of society, food safety to public health has been a topic that cannot be ignored. In recent years, lanthanide-based materials are studied to be potential candidates in the detection of food samples. Cerium (Ce)-based materials (such as Ce ions, CeO2, Ce-metal organic framework (Ce-MOF), etc.) have also attracted more attention in food detection by virtue of colorimetric, fluorescence, sensing, and other methods. This is because the mixed valence of Ce (Ce3+ and Ce4+), the formation of oxygen vacancies, and their optical and electrochemical properties. In this review, Ce-based materials will be introduced and discussed in the field of food detection, including biogenesis, construction, catalytic mechanisms, combination, and applications. In addition, the current challenges and future development trend of these Ce-based materials in food safety detection are also proposed and discussed. Therefore, it is meaningful to explore the Ce-based materials for detection of biomarkers in food samples.
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Affiliation(s)
- Jiuhong Zhao
- Wuya College of Innovation, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Xiaodan Li
- Wuya College of Innovation, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Yannan Yin
- Wuya College of Innovation, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Ruru Xiong
- Wuya College of Innovation, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Guixia Ling
- Wuya College of Innovation, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China.
| | - Peng Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China.
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8
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Wang Y, Chen Y, Zhou Y, Wang Y, Wu Y, Xie Y, Zhao P, Hu X, Fei J. Ultra-sensitive electrochemical sensor based on in situ grown ultrafine HKUST-1 nanoparticles @ graphite nanosheets and core-shell structured MoO 3-polypyrrole nanowires for the detection of rutin in orange juice. Mikrochim Acta 2024; 191:393. [PMID: 38874794 DOI: 10.1007/s00604-024-06417-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 05/05/2024] [Indexed: 06/15/2024]
Abstract
Rutin extracted from natural plants has important medical value, so developing accurate and sensitive quantitative detection methods is one of the most important tasks. In this work, HKUST-1@GN/MoO3-Ppy NWs were utilized to develop a high-performance rutin electrochemical sensor in virtue of its high conductivity and electrocatalytic activity. The morphology, crystal structure, and chemical element composition of the fabricated sensor composites were characterized by SEM, TEM, XPS, and XRD. Electrochemical techniques including EIS, CV, and DPV were used to investigate the electrocatalytic properties of the prepared materials. The electrochemical test conditions were optimized to achieve efficient detection of rutin. The 2-electron 2-proton mechanism, consisting of several rapid and sequential phases, is postulated to occur during rutin oxidation. The results show that HKUST-1@GN/MoO3-Ppy NWs have the characteristics of large specific surface area, excellent conductivity, and outstanding electrocatalytic ability. There is a significant linear relationship between rutin concentration and the oxidation peak current of DPV. The linear range is 0.50-2000 nM, and the limit of detection is 0.27 nM (S/N = 3). In addition, the prepared electrode has been confirmed to be useful for rutin analysis in orange juice.
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Affiliation(s)
- Yuefan Wang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Yinzhi Chen
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Yuhe Zhou
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Yilin Wang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Yingjie Wu
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Yixi Xie
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Pengcheng Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.
| | - Xiayi Hu
- College of Chemical Engineering, Xiangtan University, Xiangtan, 411105, People's Republic of China.
| | - Junjie Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, People's Republic of China.
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9
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Wang S, Li P, Wang J, Gong J, Lu H, Wang X, Wang Q, Xue P. Detection of Ascorbic Acid by Two-Dimensional Conductive Metal-Organic Framework-Based Electrochemical Sensors. Molecules 2024; 29:2413. [PMID: 38893288 PMCID: PMC11173493 DOI: 10.3390/molecules29112413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/09/2024] [Accepted: 05/16/2024] [Indexed: 06/21/2024] Open
Abstract
The realization of efficient and accurate detection of biomolecules has become a key scientific issue in the field of life sciences. With the rapid development of nanotechnology, electrochemical sensors constructed from the superior physical and chemical properties of nanomaterials show faster and more accurate detection. Among nanomaterials, two-dimensional conductive MOF (2D cMOF) is considered to be a star material in electrochemical sensors due to its remarkable conductivity, high porosity, and stability. In this paper, a Cu3(HHTP)2/SPE electrochemical sensor for the detection of ascorbic acid (AA) was constructed by modifying 2D cMOF (Cu3(HHTP)2) on the surface of the screen-printed electrode (SPE). The sensor exhibited excellent catalytic activity in the detection of AA, with a lower detection limit of 2.4 μmol/L (S/N = 3) and a wide linear range of 25-1645 μmol/L. This high catalytic activity can be attributed to the abundant catalytic sites in Cu3(HHTP)2 and the rapid electron transfer between Cu+ and Cu2+, which accelerates the oxidation of AA. This work lays a foundation for the subsequent development of MOFs with special electrochemical catalytic properties and the integration of 2D cMOF into intelligent electrical analysis devices.
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Affiliation(s)
| | | | | | | | | | | | - Quan Wang
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Ping Xue
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
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10
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Gu J, Jia Y, Jin Z, Wei T, Li Y. An efficient electrochemical sensor based on the Ce-MOF/g-C 3N 5 composite for the detection of nitrofurazone. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2661-2668. [PMID: 38619383 DOI: 10.1039/d3ay02221h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
The Ce-MOF/g-C3N5 composite was first constructed using a simple reflux method in an oil bath. Herein, we report that the electrochemical sensor fabricated based on this composite exhibits high performance in the detection of nitrofurazone. Interestingly, this sensor exhibits an extra-wide linear range of detection composed of two line segments (7-100 μM and 100-2913 μM), as well as a low detection limit (LOD) of 6.15 μM (S/N = 3) under optimal experimental conditions. Additionally, the sensor demonstrates exceptional selectivity, reproducibility and stability. More importantly, the proposed electrochemical sensor can effectively monitor nitrofurazone in real samples such as urea and tap water, and obtain ideal recoveries. The sensor has such excellent performance because of the synergistic effect of the two components in the Ce-MOF/g-C3N5 composite. Compared with Ce-MOF, the introduction of g-C3N5 effectively not only enhances the conductivity of Ce-MOF/g-C3N5 but also exposes more active sites, which is conducive to increasing the electrocatalytic activity to reduce nitrofurazone. This research contributes new scientific research ideas for fabricating ideal electrochemical sensors based on g-C3N5 and MOFs.
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Affiliation(s)
- Jianxia Gu
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi, China
| | - Yiqiong Jia
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi, China
| | - Zhanbin Jin
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi, China
| | - Tingting Wei
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi, China
| | - Yongxia Li
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi, China
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11
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Shen Q, Zhang Q, Yang Y, Yu X, Zang L, Zhang W, Shen D. Wavelength-dependent photoelectrochemical response demonstrated by the determination of acetaminophen and rutin in differential molecularly imprinted polymers strategy. Talanta 2024; 270:125640. [PMID: 38211357 DOI: 10.1016/j.talanta.2024.125640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/23/2023] [Accepted: 01/05/2024] [Indexed: 01/13/2024]
Abstract
Herein, the excitation wavelength-dependent responses of the molecularly imprinted polymer (MIP) photoelectrochemical (PEC) sensors were investigated, using acetaminophen (AP), rutin (RT) and perfluorooctanoate (PFOA) as the model templates, pyrrole as functional monomer, CuInS2@ZnS/TiO2 NTs as the basic photoelectrode. With wavelength λ > 240 nm, the photocurrent of MIPPFOA enhanced at higher concentrations of PFOA. With increasing AP concentration, the photocurrents of MIPAP could decline with λ < 271 nm, not change at λ = 270 nm, or increase with λ > 270 nm. As RT concentration increased, the photocurrents of MIPRT could decrease (λ < 431 nm), not change (λ = 431 nm) or increase (λ > 431 nm). The PEC responses depend on the comprehensive interaction of two contrary mechanisms from the template molecules within the MIP membrane. The photocurrent is enhanced by the role of the electron donor for photo-generated holes but attenuated due to the steric hindrance effect and the excitation light intensity loss via absorption or scattering. The apparent molar absorption coefficient of AP and RT within MIP membranes are 9.1-19.4 folds of those measured from dilute solutions. By using a routine UV lamp as the light source, the photocurrents of MIPRT at 254 nm and MIPAP at 365 nm were used to determine RT and AP, with the detection limits of 5.3 and 16 nM, respectively. The interference from the non-specific adsorption of interferents on the surfaces of MIPAP and MIPRT was reduced by one order of magnitude via a differential strategy.
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Affiliation(s)
- Qirui Shen
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014, PR China
| | - Qiao Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014, PR China
| | - Yan Yang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014, PR China
| | - Xifeng Yu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014, PR China
| | - Lixin Zang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014, PR China
| | - Wei Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014, PR China
| | - Dazhong Shen
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014, PR China.
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Hurkul MM, Yayla S, Cetinkaya A, Kaya SI, Uzun L, Ozkan SA. A novel electrochemical sensor based on a molecularly imprinted polymer for highly selective and sensitive determination of rutin from herbal supplements and plant extracts. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:1480-1488. [PMID: 38372557 DOI: 10.1039/d3ay02318d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Rutin (RUT), a natural flavonoid with various beneficial pharmacological actions such as cardioprotective, antioxidant, anti-inflammatory, neuroprotective, etc., is found in the content of many plants that are consumed daily. Due to the healthful effects, RUT is also included in the composition of various herbal supplement samples. Therefore, it is highly important to develop a sensor with high selectivity and sensitivity to determine RUT in complex samples. In this study, it was aimed to take advantage of the cheap, easy, and sensitive nature of electrochemistry and, in addition, to improve the selectivity. For this purpose, the functional monomer selected in the fabricated molecularly imprinted polymer (MIP) was N-methacryloyl-L-aspartic acid (MA-Asp) while photopolymerization (PP) was applied as the polymerization route. After completing critical optimization steps, the developed sensor (MA-Asp@RUT/MIP-GCE) was characterized electrochemically and morphologically. As a result of analytical performance evaluation in standard solution, the linear response of the sensor was found in the concentration range between 1 and 10 pM with a detection limit of 0.269 pM. The recovery studies from plant extract and commercial herbal supplement samples emphasized accuracy and applicability. In imprinting factor studies figuring out quite good selectivity, molecules with a structure similar to RUT were selected as competitors to prove the affinity of the sensor against RUT. Consequently, the MA-Asp@RUT/MIP-GCE sensor offers a more sensitive and selective method thanks to its indirect analysis approach and also stands out with the diversity of its real sample application compared to other available studies.
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Affiliation(s)
- M Mesud Hurkul
- Department of Pharmaceutical Botany, Ankara University, Faculty of Pharmacy, Ankara, Turkey.
| | - Seyda Yayla
- Department of Pharmaceutical Botany, Ankara University, Faculty of Pharmacy, Ankara, Turkey.
- Ankara University, Graduate School of Health Sciences, Ankara, Turkey
| | - Ahmet Cetinkaya
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey.
| | - S Irem Kaya
- University of Health Sciences, Gulhane Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey
| | - Lokman Uzun
- Department of Chemistry, Hacettepe University, Faculty of Science, Ankara, Turkey
| | - Sibel A Ozkan
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey.
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