Fenton and Fenton-like catalysts for electrochemical immunoassay: A mini review

Feng, Jiejie; Chu, Changshun; Ma, Zhanfang

doi:10.1016/j.elecom.2021.106970

Cited by 23 publications

(13 citation statements)

References 32 publications

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“…[8] Moreover, if H 2 O 2 is prepared for target application as water treating chemical through Fenton process, it usually proceeds well at an optimum pH range 2.5-3. [9] Consequently, it is quite desirable to develop a more robust electrocatalyst with high activity and selectivity in broad pH range. Oxidized carbon nanotubes (OCNTs) have abundant oxygen-containing species on their surfaces, which are potential for the electrocatalysts of 2e − ORR.…”

Section: On-site Production Of Dilute H 2 O 2 With Zinc-air Batterymentioning

confidence: 99%

“…[16] Usually, Fenton-like reactions proceed well at an optimum pH range 2.5-3 for degradation of most of the persistent organic compounds. [9] The technical defects mentioned above seems to be avoided by coupling UV irradiation with hydrogen peroxide (UV/H 2 O 2 ) without Fe 2+ catalyst. [17] Under the irradiation of UV light, H 2 O 2 splits into 2•OH with strong oxidizing ability (Equation 2).…”

Section: On-site Production Of H 2 O 2 With Zabmentioning

confidence: 99%

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On‐Site Production of Dilute H₂O₂ with Zinc–Air Battery

Huang

et al. 2021

Adv Materials Technologies

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Hydrogen peroxide (H2O2) is extensively applied in environmental remediation, disinfection, bleaching, and so on. Two‐electron oxygen reduction reaction for synthesizing H2O2 is the most promising alternative to the traditional energy‐intensive anthraquinone process. Existing strategies for electrocatalytic synthesis of H2O2 generally proceed well in alkaline electrolytes. But environmental application demands the reaction to take place in a broad pH range, especially in acidic medium. Here a zinc‐air battery technology is developed for on‐site production of H2O2 in alkaline, neutral, and acidic conditions. A key component of the battery is the tubular cathode fabricated by partially oxidized carbon nanotubes self‐assembled on the substrate of nickel foam. The battery exhibits an unusual 2e− discharge property and achieves an appreciable H2O2 accumulation (215.1 µmol, 497 ppm, 162.5 mg L−1 h−1) in acidic solution within 3 h, which is among the highest value ever been reported through electrosynthesis. Excitingly, the battery coupled with UV light demonstrates a promising application in water purification, which enables rapid degradation of model pollutants and actual pollutants ranging from municipal sewage to dye and pesticide wastewaters. Furthermore, this water treatment technology can be self‐powered, as the battery in the system generates the power that is available to drive UV lights.

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Section: On-site Production Of Dilute H 2 O 2 With Zinc-air Batterymentioning

confidence: 99%

Section: On-site Production Of H 2 O 2 With Zabmentioning

confidence: 99%

On‐Site Production of Dilute H₂O₂ with Zinc–Air Battery

Huang

et al. 2021

Adv Materials Technologies

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“…Sensitivity, as the crucial parameter for the evaluation of an electrochemical immunosnesor, is always defined as the signal variation caused by the incubation of antigen per unit concentration [ 32 , 33 , 34 , 35 ]. High sensitivity is beneficial for the accurate detection of multiple tumor markers [ 36 , 37 , 38 ]. Labeling of electrochemical signal substance, a necessary step in the construction of electrochemical immunosening interface [ 39 , 40 ], is closely associated with the final readout of electrochemical signal to influence the sensitivity of immunosensor [ 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Signal Substance for Multiplexed Immunosensing Interface Construction: A Mini Review

Feng¹,

Chu²,

Ma³

2022

Molecules

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Appropriate labeling method of signal substance is necessary for the construction of multiplexed electrochemical immunosensing interface to enhance the specificity for the diagnosis of cancer. So far, various electrochemical substances, including organic molecules, metal ions, metal nanoparticles, Prussian blue, and other methods for an electrochemical signal generation have been successfully applied in multiplexed biosensor designing. However, few works have been reported on the summary of electrochemical signal substance applied in constructing multiplexed immunosensing interface. Herein, according to the classification of labeled electrochemical signal substance, this review has summarized the recent state-of-art development for the designing of electrochemical immunosensing interface for simultaneous detection of multiple tumor markers. After that, the conclusion and prospects for future applications of electrochemical signal substances in multiplexed immunosensors are also discussed. The current review can provide a comprehensive summary of signal substance selection for workers researched in electrochemical sensors, and further, make contributions for the designing of multiplexed electrochemical immunosensing interface with well signal.

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“…The label-free electrochemical immunosensor is a newly developed novel detection method [ 13 , 14 , 15 , 16 ]. This type of immunosensor does not require the complex labeling of antigens or antibodies.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Immunoassay for Tumor Marker CA19-9 Detection Based on Self-Assembled Monolayer

et al. 2022

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A CA19-9 electrochemical immunosensor was constructed using a hybrid self-assembled membrane modified with a gold electrode and applied to detect real samples. Hybrid self-assembled membranes were selected for electrode modification and used to detect antigens. First, the pretreated working electrodes were placed in a 3-mercaptopropionic acid (MPA)/β-mercaptoethanol (ME) mixture for 24 h for self-assembly. The electrodes were then placed in an EDC/NHS mixture for 1 h. Layer modification was performed by stepwise dropwise addition of CA19-9 antibody, BSA, and antigen. Differential pulse voltammetry was used to characterize this immunosensor preparation process. The assembled electrochemical immunosensor enables linear detection in the concentration range of 0.05–500 U/mL of CA19-9, and the detection limit was calculated as 0.01 U/mL. The results of the specificity measurement test showed that the signal change of the interfering substance was much lower than the response value of the detected antigen, indicating that the sensor has good specificity and strong anti-interference ability. The repeatability test results showed that the relative standard deviations were less than 5%, showing good accuracy and precision. The CA19-9 electrochemical immunosensor was used for the actual sample detection, and the experimental results of the standard serum addition method showed that the RSD values of the test concentrations were all less than 10%. The recoveries were 102.4–115.0%, indicating that the assay has high precision, good accuracy, and high potential application value.

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Fenton and Fenton-like catalysts for electrochemical immunoassay: A mini review

Cited by 23 publications

References 32 publications

On‐Site Production of Dilute H₂O₂ with Zinc–Air Battery

On‐Site Production of Dilute H₂O₂ with Zinc–Air Battery

Electrochemical Signal Substance for Multiplexed Immunosensing Interface Construction: A Mini Review

Electrochemical Immunoassay for Tumor Marker CA19-9 Detection Based on Self-Assembled Monolayer

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Fenton and Fenton-like catalysts for electrochemical immunoassay: A mini review

Cited by 23 publications

References 32 publications

On‐Site Production of Dilute H2O2 with Zinc–Air Battery

On‐Site Production of Dilute H2O2 with Zinc–Air Battery

Electrochemical Signal Substance for Multiplexed Immunosensing Interface Construction: A Mini Review

Electrochemical Immunoassay for Tumor Marker CA19-9 Detection Based on Self-Assembled Monolayer

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Product

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On‐Site Production of Dilute H₂O₂ with Zinc–Air Battery

On‐Site Production of Dilute H₂O₂ with Zinc–Air Battery