Cu2+-modified hollow carbon nanospheres: an unusual nanozyme with enhanced peroxidase-like activity

Zhu, Junlun; Luo, Guan; Xi, Xiaoxue; Wang, Yijia; Selvaraj, Jonathan Nimal; Wen, Wei; Zhang, Xun

doi:10.1007/s00604-020-04690-0

Cited by 31 publications

(8 citation statements)

References 37 publications

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“…There is also tremendous potential for surface modification which can include coating with small molecules, ions, and polymers on the surface, thereby increasing the stability and active reaction sites available. These surface modifications, therefore, can be used to adjust or “fine-tune” the catalysis properties of this class of nanozymes [ 112 , 113 , 114 ]. Additionally, the morphology and crystallographic planes have important effects on modulating the catalytic activity because the different amounts of types of available bond structures and various arrangements of atoms in the nanozymes determine the selectivity and reactivity of nanozyme, overall [ 115 , 116 ].…”

Section: Nanozyme Classification and Their Catalytic Mechanismsmentioning

confidence: 99%

Nanozymes—Hitting the Biosensing “Target”

Darland

Zhao

2021

Sensors

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Nanozymes are a class of artificial enzymes that have dimensions in the nanometer range and can be composed of simple metal and metal oxide nanoparticles, metal nanoclusters, dots (both quantum and carbon), nanotubes, nanowires, or multiple metal-organic frameworks (MOFs). They exhibit excellent catalytic activities with low cost, high operational robustness, and a stable shelf-life. More importantly, they are amenable to modifications that can change their surface structures and increase the range of their applications. There are three main classes of nanozymes including the peroxidase-like, the oxidase-like, and the antioxidant nanozymes. Each of these classes catalyzes a specific group of reactions. With the development of nanoscience and nanotechnology, the variety of applications for nanozymes in diverse fields has expanded dramatically, with the most popular applications in biosensing. Nanozyme-based novel biosensors have been designed to detect ions, small molecules, nucleic acids, proteins, and cancer cells. The current review focuses on the catalytic mechanism of nanozymes, their application in biosensing, and the identification of future directions for the field.

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Section: Nanozyme Classification and Their Catalytic Mechanismsmentioning

confidence: 99%

Nanozymes—Hitting the Biosensing “Target”

Darland

Zhao

2021

Sensors

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“…Thus, to overcome the above-mentioned disadvantages, researcher have prepared some materials with enzyme-like properties. The catalytic activities of bimetallic nanoparticles, 15 carbon nanomaterials, 16 organic metal frameworks, and noble metal nanoparticles 17 have been exploited. However, they have the disadvantages of complex preparation and high purification costs.…”

Section: Introductionmentioning

confidence: 99%

Application of a CuS/Au heterostructure with peroxidase-like activity in immunosensors

Wang

Jiang

et al. 2022

New J. Chem.

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“…The unique characteristics of nanomaterials and the synergistic effect of enzyme-like activities, making nanozymes potential applications in wide fields including biosensing [ 34 ], food industry, pharmaceutical processes, and environmental treatment [ 36 ]. Since the first research that Fe 3 O 4 nanoparticles possess an intrinsic peroxidase activity [ 8 ], an emerging class of nanomaterials such as transition metal oxides/chalcogenides [ 5 , 28 , 35 ], noble metal [ 3 , 22 , 32 ], carbon-based materials [ 37 ], metal–organic framework (MOF) [ 20 ], and others [ 16 , 25 ] have been explored as nanozymes.…”

Section: Introductionmentioning

confidence: 99%

In situ synthesis of Co-doped MoS2 nanosheet for enhanced mimicking peroxidase activity

Zhang

Tang

et al. 2022

J Mater Sci

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To enhance the catalytic activity of two-dimensional layered materials as versatile materials, the modification of transition metal dichalcogenide nanosheets such as MoS 2 by doping with heteroatoms has drawn great interests. However, few reports are available on the study of the enzyme-like activity of doped MoS 2 . In this study, a facile in situ hydrothermal method for the preparation of various ultrathin transition metals (Fe, Cu, Co, Mn, and Ni) doped MoS 2 nanosheets has been reported. Through the density functional theory (DFT) and steady-state kinetic analysis, the Co-doped MoS 2 nanosheets exhibited the highest peroxidase-like catalytic activity among them. Furthermore, a typical colorimetric assay for H 2 O 2 was presented based on the catalytic oxidation of colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to a blue product (oxTMB) by Co-MoS 2 . The proposed colorimetric method showed excellent tolerance under extreme conditions and a broad linear range from 0.0005 to 25 mM for H 2 O 2 determination. Concerning the practical application, in situ detection of H 2 O 2 generated from SiHa cells was also fulfilled, fully confirming the great practicability of the proposed method in biosensing fields. Supplementary Information The online version contains supplementary material available at 10.1007/s10853-022-07201-z.

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Cu2+-modified hollow carbon nanospheres: an unusual nanozyme with enhanced peroxidase-like activity

Cited by 31 publications

References 37 publications

Nanozymes—Hitting the Biosensing “Target”

Nanozymes—Hitting the Biosensing “Target”

Application of a CuS/Au heterostructure with peroxidase-like activity in immunosensors

In situ synthesis of Co-doped MoS2 nanosheet for enhanced mimicking peroxidase activity

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