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Li J, Cai X, Jiang P, Wang H, Zhang S, Sun T, Chen C, Fan K. Co-based Nanozymatic Profiling: Advances Spanning Chemistry, Biomedical, and Environmental Sciences. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307337. [PMID: 37724878 DOI: 10.1002/adma.202307337] [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: 07/24/2023] [Revised: 09/12/2023] [Indexed: 09/21/2023]
Abstract
Nanozymes, next-generation enzyme-mimicking nanomaterials, have entered an era of rational design; among them, Co-based nanozymes have emerged as captivating players over times. Co-based nanozymes have been developed and have garnered significant attention over the past five years. Their extraordinary properties, including regulatable enzymatic activity, stability, and multifunctionality stemming from magnetic properties, photothermal conversion effects, cavitation effects, and relaxation efficiency, have made Co-based nanozymes a rising star. This review presents the first comprehensive profiling of the Co-based nanozymes in the chemistry, biology, and environmental sciences. The review begins by scrutinizing the various synthetic methods employed for Co-based nanozyme fabrication, such as template and sol-gel methods, highlighting their distinctive merits from a chemical standpoint. Furthermore, a detailed exploration of their wide-ranging applications in biosensing and biomedical therapeutics, as well as their contributions to environmental monitoring and remediation is provided. Notably, drawing inspiration from state-of-the-art techniques such as omics, a comprehensive analysis of Co-based nanozymes is undertaken, employing analogous statistical methodologies to provide valuable guidance. To conclude, a comprehensive outlook on the challenges and prospects for Co-based nanozymes is presented, spanning from microscopic physicochemical mechanisms to macroscopic clinical translational applications.
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Affiliation(s)
- Jingqi Li
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, P. R. China
- Aulin College, Northeast Forestry University, Harbin, 150040, P. R. China
| | - Xinda Cai
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, P. R. China
- Aulin College, Northeast Forestry University, Harbin, 150040, P. R. China
| | - Peng Jiang
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, P. R. China
- Aulin College, Northeast Forestry University, Harbin, 150040, P. R. China
| | - Huayuan Wang
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, P. R. China
- Aulin College, Northeast Forestry University, Harbin, 150040, P. R. China
| | - Shiwei Zhang
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, P. R. China
- Aulin College, Northeast Forestry University, Harbin, 150040, P. R. China
| | - Tiedong Sun
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, P. R. China
- Aulin College, Northeast Forestry University, Harbin, 150040, P. R. China
| | - Chunxia Chen
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, P. R. China
- Aulin College, Northeast Forestry University, Harbin, 150040, P. R. China
| | - Kelong Fan
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, P. R. China
- Nanozyme Medical Center, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, P. R. China
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2
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Chi Z, Wang Q, Gu J. Recent advances in colorimetric sensors based on nanozymes with peroxidase-like activity. Analyst 2023; 148:487-506. [PMID: 36484756 DOI: 10.1039/d2an01850k] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Nanozymes have been widely used to construct colorimetric sensors due to their advantages of cost-effectiveness, high stability, good biocompatibility, and ease of modification. The emergence of nanozymes greatly enhanced the detection sensitivity and stability of the colorimetric sensing platform. Recent significant research has focused on designing various sensors based on nanozymes with peroxidase-like activity for colorimetric analysis. However, with the deepening of research, nanozymes with peroxidase-like activity has also exposed some problems, such as weak affinity and low catalytic activity. In view of the above issues, existing investigations have shown that the catalytic properties of nanozymes can be improved by adding surface modification and changing the structure of nanomaterials. In this review, we summarize the recent trends and advances of colorimetric sensors based on several typical nanozymes with peroxidase-like activities, including noble metals, metal oxides, metal sulfides/metal selenides, and carbon and metal-organic frameworks (MOF). Finally, the current challenges and prospects of colorimetric sensors based on nanozymes with peroxidase-like activity are summarized and discussed to provide a reference for researchers in related fields.
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Affiliation(s)
- Zhongmei Chi
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou, Liaoning Province, 121013, P. R. China.
| | - Qiong Wang
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou, Liaoning Province, 121013, P. R. China.
| | - Jiali Gu
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou, Liaoning Province, 121013, P. R. China.
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Ye ML, Zhu Y, Lu Y, Gan L, Zhang Y, Zhao YG. Magnetic nanomaterials with unique nanozymes-like characteristics for colorimetric sensors: A review. Talanta 2021; 230:122299. [PMID: 33934768 DOI: 10.1016/j.talanta.2021.122299] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 02/20/2021] [Accepted: 02/22/2021] [Indexed: 12/21/2022]
Abstract
Colorimetric sensors for the rapid detection of numerous analytes have been widely applied in many fields such as biomedicine, food industry and environmental science due to their highly sensitive and selective response, easy operation and visual identification by naked eyes. In this review, the recent progress of the colorimetric sensors based on the magnetic nanomaterials with unique nanozymes-like catalytic activity (magnetic nanozyme) and their colorimetric sensing applications are presented. Emerging magnetic nanozyme-based colorimetric sensors, such as metal oxide/sulfides-based, metal-based, carbon-based, and aptamer-conjugated magnetic nanomaterials, offer many desirable features for target analytes detection. And due to the unique nanoscale physical-chemical properties, magnetic nanozymes have been used to mimic the catalytic activity of natural enzymes such as peroxidases, oxidases and catalases. This review also highlights the catalytic mechanisms of enzyme-like reactions, and promising colorimetric sensing system for the detection of chemical compounds like H2O2, pesticide, ascorbic acid, dopamine, tetracyclines, perfluorooctane sulfonate, phenolic compounds, heavy metal ion and sulfite have been deeply discussed. In addition, the remaining challenges and future directions in utilizing magnetic nanozyme for colorimetric sensors are addressed.
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Affiliation(s)
- Ming-Li Ye
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China; Department of Environmental Engineering, Wuchang University of Technology, Wuhan, 430223, China
| | - Yan Zhu
- Department of Environmental Engineering, Wuchang University of Technology, Wuhan, 430223, China
| | - Yin Lu
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China
| | - Lu Gan
- Zhejiang University Hospital, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Yun Zhang
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.
| | - Yong-Gang Zhao
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, Zhejiang, 315010, China.
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4
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Shcherbakov AB, Reukov VV, Yakimansky AV, Krasnopeeva EL, Ivanova OS, Popov AL, Ivanov VK. CeO 2 Nanoparticle-Containing Polymers for Biomedical Applications: A Review. Polymers (Basel) 2021; 13:924. [PMID: 33802821 PMCID: PMC8002506 DOI: 10.3390/polym13060924] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/11/2021] [Accepted: 03/14/2021] [Indexed: 12/16/2022] Open
Abstract
The development of advanced composite biomaterials combining the versatility and biodegradability of polymers and the unique characteristics of metal oxide nanoparticles unveils new horizons in emerging biomedical applications, including tissue regeneration, drug delivery and gene therapy, theranostics and medical imaging. Nanocrystalline cerium(IV) oxide, or nanoceria, stands out from a crowd of other metal oxides as being a truly unique material, showing great potential in biomedicine due to its low systemic toxicity and numerous beneficial effects on living systems. The combination of nanoceria with new generations of biomedical polymers, such as PolyHEMA (poly(2-hydroxyethyl methacrylate)-based hydrogels, electrospun nanofibrous polycaprolactone or natural-based chitosan or cellulose, helps to expand the prospective area of applications by facilitating their bioavailability and averting potential negative effects. This review describes recent advances in biomedical polymeric material practices, highlights up-to-the-minute cerium oxide nanoparticle applications, as well as polymer-nanoceria composites, and aims to address the question: how can nanoceria enhance the biomedical potential of modern polymeric materials?
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Affiliation(s)
- Alexander B. Shcherbakov
- Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine;
| | - Vladimir V. Reukov
- Department of Textiles, Merchandising and Interiors, University of Georgia, Athens, GA, 30602, USA;
| | - Alexander V. Yakimansky
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.V.Y.); (E.L.K.)
| | - Elena L. Krasnopeeva
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia; (A.V.Y.); (E.L.K.)
| | - Olga S. Ivanova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (O.S.I.); (A.L.P.)
| | - Anton L. Popov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (O.S.I.); (A.L.P.)
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142290 Moscow, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia; (O.S.I.); (A.L.P.)
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5
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Lu C, Liu Y, Wen Q, Liu Y, Wang Y, Rao H, Shan Z, Zhang W, Wang X. Ratiometric fluorescence assay for L-Cysteine based on Fe-doped carbon dot nanozymes. NANOTECHNOLOGY 2020; 31:445703. [PMID: 32659751 DOI: 10.1088/1361-6528/aba578] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, a ratiometric fluorescence method based on nanozyme was fabricated to determine L-Cysteine. Taking silkworm feces as a carbon source, together with Fe3+, Fe-doped carbon dots (Fe-CDs) were synthesized through a hydrothermal method. Fe-CDs were able to oxidize the enzyme substrate o-phenylenediamine (OPD) to produce oxidized OPD (Ox-OPD) when H2O2 coexisted with them. Based on the fluorescence property of Fe-CDs and Ox-OPD, a dual-emission system was built. Since L-Cysteine contains reductive thiols that can inhibit the production of Ox-OPD, the addition of L-Cysteine caused a decrease in the fluorescence intensity of Ox-OPD. The results showed that the ratio of fluorescence intensities at 450 and 560 nm (I450/I560) varied linearly with the concentration of L-Cysteine in the range of 0.25-90 μM and the limit of detection is as low as 0.047 μM. Furthermore, using this ratiometric fluorescence system to determine L-Cysteine in serum and tap-water samples, average recoveries were evaluated to reach 98.75%-103.27% with the relative standard deviation of no more than 4.5%. Based on the fluorescence property and nanozyme-like activity, this work provides an inspiration to open a new horizon in using natural carbon source to synthesize CDs and for the application of CDs as a nanozyme.
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Affiliation(s)
- Changfang Lu
- College of Science, Sichuan Agricultural University, Chengdu 611130, Sichuan, People's Republic of China
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Yang J, Peng S, Shi Y, Ma S, Ding H, Rupprechter G, Wang J. Fast visual evaluation of the catalytic activity of CeO2: Simple colorimetric assay using 3,3′,5,5′-tetramethylbenzidine as indicator. J Catal 2020. [DOI: 10.1016/j.jcat.2020.05.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Recent progress on designing electrospun nanofibers for colorimetric biosensing applications. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2020. [DOI: 10.1016/j.cobme.2019.08.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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8
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Chen W, Li S, Wang J, Sun K, Si Y. Metal and metal-oxide nanozymes: bioenzymatic characteristics, catalytic mechanism, and eco-environmental applications. NANOSCALE 2019; 11:15783-15793. [PMID: 31432841 DOI: 10.1039/c9nr04771a] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phenolic contaminants (R-OH) are a category of highly toxic organic compounds that are widespread in aquatic ecosystems and can induce carcinogenic risk to wildlife and humans; natural enzymes as green catalysts are capable of step-polymerizing these compounds to produce diverse macromolecular self-coupling products via radical-mediated C-C and C-O-C bonding at either the ortho- or para-carbon position, thereby evading the bioavailability and ecotoxicity of these compounds. Intriguingly, certain artificial metal and metal-oxide nanomaterials are known as nanozymes. They not only possess the unique properties of nanomaterials but also display intrinsic enzyme-mimicking activities. These artificial nanozymes are expected to surmount the shortcomings, such as low stability, easy inactivation, difficult recycling, and high cost, of natural enzymes, thus contributing to eco-environmental restoration. This review highlights the available studies on the enzymatic characteristics and catalytic mechanisms of natural enzymes and artificial metal and metal-oxide nanozymes in the removal and transformation of R-OH. These advances will provide key research directions beneficial to the multifunctional applications of artificial nanozymes in aquatic ecosystems.
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Affiliation(s)
- Wenjun Chen
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China.
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9
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Wu J, Wang X, Wang Q, Lou Z, Li S, Zhu Y, Qin L, Wei H. Nanomaterials with enzyme-like characteristics (nanozymes): next-generation artificial enzymes (II). Chem Soc Rev 2019; 48:1004-1076. [DOI: 10.1039/c8cs00457a] [Citation(s) in RCA: 1628] [Impact Index Per Article: 325.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An updated comprehensive review to help researchers understand nanozymes better and in turn to advance the field.
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Affiliation(s)
- Jiangjiexing Wu
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Xiaoyu Wang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Quan Wang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Zhangping Lou
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Sirong Li
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Yunyao Zhu
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Li Qin
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
| | - Hui Wei
- Department of Biomedical Engineering, College of Engineering and Applied Sciences
- Nanjing National Laboratory of Microstructures
- Jiangsu Key Laboratory of Artificial Functional Materials
- Nanjing University
- Nanjing
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10
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Song W, Zhao B, Wang C, Ozaki Y, Lu X. Functional nanomaterials with unique enzyme-like characteristics for sensing applications. J Mater Chem B 2019; 7:850-875. [DOI: 10.1039/c8tb02878h] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We highlight the recent developments in functional nanomaterials with unique enzyme-like characteristics for sensing applications.
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Affiliation(s)
- Wei Song
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Ce Wang
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Yukihiro Ozaki
- School of Science and Technology
- Kwansei Gakuin Universty
- Hyogo 660-1337
- Japan
| | - Xiaofeng Lu
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
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11
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Bao YW, Hua XW, Ran HH, Zeng J, Wu FG. Metal-doped carbon nanoparticles with intrinsic peroxidase-like activity for colorimetric detection of H2O2 and glucose. J Mater Chem B 2019; 7:296-304. [DOI: 10.1039/c8tb02404a] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We develop a general hydrothermal approach to fabricate new nanozymes with intrinsic peroxidase-like activity for H2O2 and glucose detection.
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Affiliation(s)
- Yan-Wen Bao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University
- Nanjing 210096
- P. R. China
| | - Xian-Wu Hua
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University
- Nanjing 210096
- P. R. China
| | - Huan-Huan Ran
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University
- Nanjing 210096
- P. R. China
| | - Jia Zeng
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University
- Nanjing 210096
- P. R. China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University
- Nanjing 210096
- P. R. China
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12
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Yang Z, Ma F, Zhu Y, Chen S, Wang C, Lu X. A facile synthesis of CuFe 2O 4/Cu 9S 8/PPy ternary nanotubes as peroxidase mimics for the sensitive colorimetric detection of H 2O 2 and dopamine. Dalton Trans 2018; 46:11171-11179. [PMID: 28812762 DOI: 10.1039/c7dt02355c] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Synergistic effects play an important role in improving the catalytic activity for enzyme-like reactions. Compared to individual nanomaterials, a system consisting of multiple components usually exhibits enhanced catalytic activity as an enzyme mimic. Herein we describe the synthesis of CuFe2O4/Cu9S8/polypyrrole (PPy) ternary nanotubes as an efficient peroxidase mimic via a three-step approach involving an electrospinning process, annealing treatment and hydrothermal reaction. The remarkably enhanced catalytic activity of CuFe2O4/Cu9S8/PPy ternary nanotubes as peroxidase mimics over individual CuFe2O4 nanofibers, CuFe2O4/CuO composite nanofibers, CuFe2O4/CuS composite nanofibers, and PPy materials has been achieved, demonstrating the presence of a synergistic effect among the components. The steady-state kinetic experiment suggests a good catalytic efficiency of the CuFe2O4/Cu9S8/PPy ternary nanotubes. On the basis of high catalytic activity, a colorimetric platform for the sensitive detection of H2O2 and dopamine has been developed. This work not only offers a simple approach for the fabrication of a high performance peroxidase-like nanocatalyst, but also provides its promising potential applications in biosensors, medical diagnosis, and environmental monitoring.
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Affiliation(s)
- Zezhou Yang
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
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13
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Detection of urinary spermine by using silver-gold/silver chloride nanozymes. Anal Chim Acta 2018; 1009:89-97. [DOI: 10.1016/j.aca.2018.01.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/13/2017] [Accepted: 01/09/2018] [Indexed: 11/19/2022]
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14
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Song W, Hildebrandt P, Weidinger IM. Plasmonic Cu/CuCl/Cu2S/Ag and Cu/CuCl/Cu2S/Au Supports with Peroxidase-Like Activity: Insights from Surface Enhanced Raman Spectroscopy. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2018-1126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Abstract
In the present study, we present nanostructured bimetallic Cu/CuCl/Cu2S/Au(Ag) supports that exhibit plasmonic electromagnetic field enhancement and peroxidase-like catalytic activity. The Cu2S component acts as the peroxidase-like catalyst, while the Au or Ag component provides the necessary light enhancement for surface enhanced Raman spectroscopic (SERS) studies of surface bound molecular reactants. As a test reaction the catalytic oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) in presence of H2O2 was investigated. The comparison of product evolution in solution measured by UV-Vis spectroscopy and on the surface measured via SERS is able to give more insight into the different steps involved in the overall catalysis.
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Affiliation(s)
- Wei Song
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun 130012 , P. R. China
| | - Peter Hildebrandt
- Technische Universität Berlin, Institut für Chemie , Strasse des 17. Juni 135 , 10623 Berlin , Germany
| | - Inez M. Weidinger
- Technische Universität Dresden, Fakultät Chemie und Lebensmittelchemie , 01069 Dresden , Germany
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15
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Synthesis of hierarchical Co 3O 4@NiO core-shell nanotubes with a synergistic catalytic activity for peroxidase mimicking and colorimetric detection of dopamine. Talanta 2018; 181:431-439. [PMID: 29426536 DOI: 10.1016/j.talanta.2018.01.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 12/28/2017] [Accepted: 01/08/2018] [Indexed: 11/20/2022]
Abstract
Fabrication of core-shell nanostructured catalyst is a promising way for tuning its catalytic performance due to the highly active interface and rich redox properties. In this work, hierarchical Co3O4@NiO core-shell nanotubes are fabricated by the deposition of NiO shells via a chemical bath treatment using electrospun Co-C composite nanofibers as templates, followed by a calcination process in air. The as-prepared Co3O4@NiO core-shell nanotubes exhibit a uniform and novel hollow structure with Co3O4 nanoparticles attached to the inner wall of NiO nanotubes and excellent catalytic activity toward the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of H2O2. Due to the synergistic effect, the peroxidase-like activity of the Co3O4@NiO core-shell nanotubes is much higher than that of individual Co3O4 and NiO components. Owing to the superior peroxidase-like activity, a simple and rapid colorimetric approach for the detection of dopamine with a detection limit of 1.21µM and excellent selectivity has been developed. It is anticipated that the prepared Co3O4@NiO core-shell nanotubes are promising materials applied for biomedical analysis and environmental monitoring.
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