Controllable doping of Fe atoms into MoS2 nanosheets towards peroxidase-like nanozyme with enhanced catalysis for colorimetric analysis of glucose

Feng, Luping; Zhang, Lixiang; Chu, Su; Zhang, Sheng; Chen, Xi; Du, Zhongling; Gong, Yushuang; Wang, Hua

doi:10.1016/j.apsusc.2022.152496

Cited by 42 publications

(19 citation statements)

References 48 publications

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“…Since Fe 3 O 4 nanoparticles were found to have peroxidase-like catalytic activity in 2007 [ 13 ], many researches have been devoted to the development and application of nanozymes [ 14 ]. So far, a variety of nanomaterials such as metal-based [ 15 , 16 , 17 ], metal oxide-based [ 18 , 19 , 20 ], carbon-based [ 21 , 22 , 23 ] and metal-organic frameworks (MOFs) [ 24 , 25 , 26 ] have been found to have various types of enzymatic catalytic activities including peroxidase, oxidase, catalase, superoxide dismutase, hydrolase and glucose oxidase [ 27 ]. These nanozymes have played a good role in biosensors, imaging, cancer treatment, wound healing, antibacterial mechanisms and environmental protection [ 14 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of 1-Methylimidazole/Cu Nanozyme with Enhanced Laccase Activity for Fast Degradation and Sensitive Detection of Phenol Compounds

Huang

et al. 2022

Molecules

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Facile construction of functional nanomaterials with laccase-like activity is important in sustainable chemistry since laccase is featured as an efficient and promising catalyst especially for phenolic degradation but still has the challenges of high cost, low activity, poor stability and unsatisfied recyclability. In this paper, we report a simple method to synthesize nanozymes with enhanced laccase-like activity by the self-assembly of copper ions with various imidazole derivatives. In the case of 1-methylimidazole as the ligand, the as-synthesized nanozyme (denoted as Cu-MIM) has the highest yield and best activity among the nanozymes prepared. Compared to laccase, the Km of Cu-MIM nanozyme to phenol is much lower, and the vmax is 6.8 times higher. In addition, Cu-MIM maintains excellent stability in a variety of harsh environments, such as high pH, high temperature, high salt concentration, organic solvents and long-term storage. Based on the Cu-MIM nanozyme, we established a method for quantitatively detecting phenol concentration through a smartphone, which is believed to have important applications in environmental protection, pollutant detection and other fields.

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Section: Introductionmentioning

confidence: 99%

Facile Fabrication of 1-Methylimidazole/Cu Nanozyme with Enhanced Laccase Activity for Fast Degradation and Sensitive Detection of Phenol Compounds

Huang

et al. 2022

Molecules

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“…According to previous reports, the peroxidase-mimetic property of nanozymes was mostly caused by promoting the production of hydroxyl radicals ( • OH) in the presence of H 2 O 2 . 36,37 To verify this theory, the electron spin resonance (ESR) spectrum of the Cu-SAC/H 2 O 2 system was measured (Figure 4B). The four characteristic peaks with the typical intensity ratio close to 1:2:2:1 were obviously observed, demonstrating the generation of • OH by catalyzing the decomposition of H 2 O 2 .…”

Section: Resultsmentioning

confidence: 91%

Facile Synthesis of High-Loading Cu Single-Atom Nanozyme for Total Antioxidant Capacity Sensing

Liu,

Wu,

Zheng

et al. 2023

ACS Appl. Nano Mater.

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Single-atom catalysts (SACs) with atomically dispersed active sites and maximum atomic utilization efficiency provide new opportunities to develop high-performance nanozymes. However, the preparation of SACs with a high metal content still faces serious challenges. Herein, we report a pyrolysis method for achieving a Cu single-atom catalyst (Cu-SAC) on nitrogen-doped carbon with a Cu loading of 7.98 wt %. Isolated Cu atoms with Cu–N3–C coordination were confirmed by spherical aberration-corrected transmission electron microscopy and X-ray absorption spectroscopy. The synthesized Cu-SAC displayed outstanding peroxidase-like activity by effectively catalyzing the reaction between 3,3′,5,5′-tetramethylbenzidine (TMB) and H2O2 to show a blue color. Based on the inhibition effect on the oxidation of TMB by ascorbic acid (AA), a colorimetric assay for AA was established with a limit of detection (LOD) of 0.63 μM. Furthermore, the total antioxidant capacities (TACs) of practical samples including vitamin C tablets, commercial beverages, and fresh fruit were successfully detected by the proposed colorimetric assay. This study provided a facile method for the preparation of high-metal-loading SACs, which exhibited high enzymatic properties with promising applications in food and drug safety.

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“…8). 112 Thus, Fe-MoS 2 nanosheet-based colorimetric strategy realized the detection of glucose with satisfactory sensitivity. Except for Fe-based doping, Prussian blue NPs (CPBNPs) or other metals ( i.e.…”

Section: Metal Sulfide/metal Selenide-based Nanozymesmentioning

confidence: 99%

Recent advances in colorimetric sensors based on nanozymes with peroxidase-like activity

Chi

Wang

2023

Analyst

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Controllable doping of Fe atoms into MoS2 nanosheets towards peroxidase-like nanozyme with enhanced catalysis for colorimetric analysis of glucose

Cited by 42 publications

References 48 publications

Facile Fabrication of 1-Methylimidazole/Cu Nanozyme with Enhanced Laccase Activity for Fast Degradation and Sensitive Detection of Phenol Compounds

Facile Fabrication of 1-Methylimidazole/Cu Nanozyme with Enhanced Laccase Activity for Fast Degradation and Sensitive Detection of Phenol Compounds

Facile Synthesis of High-Loading Cu Single-Atom Nanozyme for Total Antioxidant Capacity Sensing

Recent advances in colorimetric sensors based on nanozymes with peroxidase-like activity

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