Cu-THQ metal-organic frameworks: A kind of new inner reference for the reliable detection of dopamine base on ratiometric electrochemical sensing

2022 ◽  
Vol 172 ◽  
pp. 106903
Author(s):  
Shan Luo ◽  
Yuanyuan Wang ◽  
Xianwen Kan
Keyword(s):  
Metal Organic Frameworks ◽  
Electrochemical Sensing ◽  
Reliable Detection ◽  
Metal Organic

Development of Au-Pd@UiO-66-on-ZIF-L/CC as a self-supported electrochemical sensor for in situ monitoring of cellular hydrogen peroxide

2021 ◽  
Author(s):  
Jilin Zheng ◽  
Peng Zhao ◽  
Shiying Zhou ◽  
Sha Chen ◽  
Yi Liang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Sensor ◽  
Noble Metals ◽  
Electrochemical Sensors ◽  
Metal Organic Frameworks ◽  
Electrochemical Sensing ◽  
In Situ Monitoring ◽  
Metal Organic

Integrating metal-organic frameworks (MOFs) of different components or structures together and exploiting them as electrochemical sensors for electrochemical sensing have aroused great interest. And the incorporation of noble metals with...

Multifunctional Encapsulating Gold Nanoparticles into Cu-Hemin/Metal-Organic Frameworks for Catechol Electrochemical Detection on Graphene-Based Electrode

NANO ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. 2050155
Author(s):  
Beibei Wang ◽  
Kai Kang ◽  
Xueping Ji ◽  
Yuheng Liu ◽  
Xianrui Li ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Metal Organic Frameworks ◽  
Surface Characteristics ◽  
Electrical Signal ◽  
Electrochemical Sensing ◽  
Experimental Conditions ◽  
Current Time ◽  
Glass Carbon Electrode ◽  
Electrochemically Reduced Graphene Oxide ◽  
Metal Organic

A new type of multifunctional metal-organic frameworks (MOFs) was synthesized by encapsulating gold nanoparticles (AuNPs) into the Cu-hemin MOFs, and first applied to an electrochemical sensor to detect catechol (CT) with the aid of electrochemically reduced graphene oxide (ERGO) for signal amplification. First, ERGO was electrochemically deposited on a bare glass carbon electrode (GCE), followed by casting Cu-hemin MOFs on an ERGO-modified electrode, and then growing AuNPs in situ on Cu-hemin MOFs/ERGO/GCE by electrochemical deposition. Cyclic voltammetry (CV), scanning electron microscopy (SEM) and current–time ([Formula: see text]–[Formula: see text] were utilized to characterize the electrochemical performance and surface characteristics of the as-prepared sensor. The results demonstrated that Cu-hemin MOFs have not only been a matrix to avoid the aggregation of AuNPs but also an ideal loading platform for the adsorption of CT due to its large surface area and porosity. In addition, the ERGO also has the advantage of fast electron transfer, which can make synergy with AuNPs@Cu-hemin MOFs nanocomposites to amplify the electrical signal. The AuNPs/Cu-hemin MOFs/ERGO/GCE exhibited an excellent electrocatalytic activity with increased electrochemical signals towards the oxidation of CT. Under the optimum experimental conditions, the sensor shows a wide linear relationship over the range of [Formula: see text][Formula: see text]M to [Formula: see text][Formula: see text]M with a detection limit of [Formula: see text][Formula: see text]M. Moreover, the sensor presented the good reproducibility and the excellent anti-interference performance. This work would broaden the application of MOFs material in constructing more novel electrochemical sensing platform.

Preparation of graphene nano-sheet bonded PDA/MOF microcapsules with immobilized glucose oxidase as a mimetic multi-enzyme system for electrochemical sensing of glucose

2016 ◽  
Vol 4 (21) ◽  
pp. 3695-3702 ◽  
Author(s):  
Yang Wang ◽  
Chen Hou ◽  
Yun Zhang ◽  
Fu He ◽  
Mingzhu Liu ◽  
...  
Keyword(s):  
Glucose Oxidase ◽  
Enzyme System ◽  
Metal Organic Frameworks ◽  
Amperometric Biosensor ◽  
Electrochemical Sensing ◽  
Glucose Detection ◽  
Metal Organic ◽  
Immobilized Glucose Oxidase

A novel amperometric biosensor for glucose detection was fabricated based on a mimetic multi-enzyme system by combing mimetic enzymes (metal–organic frameworks, MOFs) and glucose oxidase (GOx).

Well-defined gold nanoparticle@N-doped porous carbon prepared from metal nanoparticle@metal–organic frameworks for electrochemical sensing of hydrazine

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23403-23410 ◽  
Author(s):  
Juan Yang ◽  
Faqiong Zhao ◽  
Baizhao Zeng
Keyword(s):  
Gold Nanoparticle ◽  
Porous Carbon ◽  
Metal Organic Frameworks ◽  
Metal Nanoparticle ◽  
Electrochemical Sensing ◽  
Schematic Diagram ◽  
Metal Organic

Schematic diagram of the preparation of Au@NPC and its application to the determination of hydrazine.

Performance of metal–organic frameworks in the electrochemical sensing of environmental pollutants

2021 ◽  
Vol 9 (13) ◽  
pp. 8195-8220
Author(s):  
Somayeh Tajik ◽  
Hadi Beitollahi ◽  
Fariba Garkani Nejad ◽  
Iran Sheikhshoaie ◽  
Asep Sugih Nugraha ◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Metal Organic Frameworks ◽  
Environmental Pollutants ◽  
Electrochemical Sensing ◽  
Rapid Urbanization ◽  
Metal Organic

Environmental pollution has been a known threat to our world due to the rapid urbanization, changing lifestyle of people, and modern industrialization.

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