AuNPs-NH2/Cu-MOF modified glassy carbon electrode as enzyme-free electrochemical sensor detecting H2O2

Dang, Wen-Jiao; Sun, Yanmei; Jiang, Huan; Xu, Ling; Lin, Meng

doi:10.1016/j.jelechem.2019.113592

Cited by 153 publications

(54 citation statements)

References 51 publications

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“…As demonstrated by the studies, the electro-analytical methods are incredibly considered for the analyte sensing because of the respective instrumental simplication, affordability, and portability. [34][35][36][37] There is enough knowledge that traditional electrodes cause a number of severe concerns as a result of their slow surface kinetics that would seriously affect the electrodes selectivity and sensitivity. In general, the analytes on the traditional electrodes show a wide peak and usually any peak does not appear at lower concentrations.…”

Section: Electrochemical Sensing Modified Electrodesmentioning

confidence: 99%

Recent developments in electrochemical sensors for detecting hydrazine with different modified electrodes

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Section: Electrochemical Sensing Modified Electrodesmentioning

confidence: 99%

Recent developments in electrochemical sensors for detecting hydrazine with different modified electrodes

et al. 2020

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“…It has been proven that electrochemical activity and sensitivity significantly improve with the use of bimetallic NPs [ 202 ]. For example, different combinations of more than one transition metal, such as Au with Ag [ 203 , 204 , 205 ], Co [ 205 , 206 ], Pt [ 201 , 207 , 208 ], Pd [ 209 ], Cu [ 210 , 211 ], Fe 3 O 4 [ 212 , 213 ], or Fe 2 O 3 [ 212 , 213 ], have been intensively investigated and have led to successful development of electrochemical sensors. For instance, Zhao et al [ 204 ] developed Ag-Au bimetallic NPs supported on reduced GO with alginate as a stabilizer and reductant.…”

Section: Hydrogen Peroxide (H 2 O 2 mentioning

confidence: 99%

Detection Technologies for Reactive Oxygen Species: Fluorescence and Electrochemical Methods and Their Applications

et al. 2021

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Reactive oxygen species (ROS) have been found in plants, mammals, and natural environmental processes. The presence of ROS in mammals has been linked to the development of severe diseases, such as diabetes, cancer, tumors, and several neurodegenerative conditions. The most common ROS involved in human health are superoxide (O2•−), hydrogen peroxide (H2O2), and hydroxyl radicals (•OH). Organic and inorganic molecules have been integrated with various methods to detect and monitor ROS for understanding the effect of their presence and concentration on diseases caused by oxidative stress. Among several techniques, fluorescence and electrochemical methods have been recently developed and employed for the detection of ROS. This literature review intends to critically discuss the development of these techniques to date, as well as their application for in vitro and in vivo ROS detection regarding free-radical-related diseases. Moreover, important insights into and further steps for using fluorescence and electrochemical methods in the detection of ROS are presented.

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“…For example, carboxyl-modified graphene oxide (GO-COOH) has intrinsic peroxidase-like activity when catalyzing the reaction of the peroxidase substrate, TMB, in the presence of H 2 O 2 to produce a blue-colored reaction product [ 71 ]. A series of CNM-based biosensors for H 2 O 2 [ 72 , 73 ] and other small molecules, ions [ 74 , 75 ], DNA [ 76 , 77 ], protein, and cancer cells have been developed, with the TMB used as a reaction substrate. The addition of TMB provides an added visual signal sensitivity since the TMB is readily oxidized by the carbon-based nanozyme.…”

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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AuNPs-NH2/Cu-MOF modified glassy carbon electrode as enzyme-free electrochemical sensor detecting H2O2

Cited by 153 publications

References 51 publications

Recent developments in electrochemical sensors for detecting hydrazine with different modified electrodes

Recent developments in electrochemical sensors for detecting hydrazine with different modified electrodes

Detection Technologies for Reactive Oxygen Species: Fluorescence and Electrochemical Methods and Their Applications

Nanozymes—Hitting the Biosensing “Target”

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