Upcycling fruit peel waste into a green reductant to reduce graphene oxide for fabricating an electrochemical sensing platform for sulfamethoxazole determination in aquatic environments

2021 ◽  
pp. 152273
Author(s):  
Ting-Wei Lee ◽  
I-Chen Tsai ◽  
Yu-Fang Liu ◽  
Chiaying Chen
Keyword(s):  
Graphene Oxide ◽  
Reduce Graphene Oxide ◽  
Electrochemical Sensing ◽  
Aquatic Environments ◽  
Fruit Peel ◽  
Sensing Platform

A graphene oxide coated gold nanostar based sensing platform for ultrasensitive electrochemical detection of circulating tumor DNA

2020 ◽  
Vol 12 (4) ◽  
pp. 440-447 ◽  
Author(s):  
Mahbubur Rahman ◽  
Daxiang Cui ◽  
Shukui Zhou ◽  
Amin Zhang ◽  
Di Chen
Keyword(s):  
Graphene Oxide ◽  
Gastric Carcinoma ◽  
Electrochemical Reduction ◽  
Electrochemical Detection ◽  
Peripheral Blood ◽  
High Performance ◽  
Circulating Tumor Dna ◽  
Electrochemical Sensing ◽  
Sensing Platform ◽  
Tumor Dna

A high-performance electrochemical sensing platform inspired by a functional ‘green’ electrochemical reduction pathway was developed to identify and detect circulating tumor DNA (ctDNA) of gastric carcinoma in peripheral blood.

scholarly journals Preparation of Graphene Oxide-Embedded Hydrogel as a Novel Sensor Platform for Antioxidant Activity Evaluation of Scutellaria baicalensis

2021 ◽  
Vol 9 ◽  
Author(s):  
Shuai Yan ◽  
Yinzi Yue ◽  
Li Zeng ◽  
Lianlin Su ◽  
Min Hao ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Graphene Oxide ◽  
Scutellaria Baicalensis ◽  
Electrochemical Sensing ◽  
Zinc Ions ◽  
Sensing Platform ◽  
Analysis Technique ◽  
Sensor Platform ◽  
Before And After

Antioxidation is very important in medicine and food. The current evaluation technologies often have many shortcomings. In this work, an improved electrochemical sensing platform for the evaluation of antioxidant activity has been proposed. A hydrogel was prepared based on graphene oxide, zinc ions, and chitosan. Zinc ions play the role of crosslinking agents in hydrogels. The structure of chitosan can be destroyed by injecting hydrogen peroxide into the hydrogel, and the free zinc ions can diffuse to the surface of the electrode to participate in the electrochemical reaction. This electrochemical sensor can evaluate the antioxidant activity by comparing the current difference of zinc reduction before and after adding the antioxidant. With the help of graphene oxide, this hydrogel can greatly enhance the sensing effect. We conducted tests on 10 real samples. This proposed electrochemical platform has been successfully applied for evaluating the antioxidant activity of Scutellaria baicalensis, and the results were compared to those obtained from the 2,2-diphenyl-1-picrylhydrazyl-based traditional analysis technique.

Electrochemical Sensing Platform Based on Graphene Oxide-Chitosan for Simultaneous Determination of Some Antihypertensive Agents

2021 ◽  
Author(s):  
Hassan Nabizadeh ◽  
Bahareh Feyzi-barnaji ◽  
Amir Ahmad Salarian ◽  
Seyed Reza Abtahi ◽  
Ali Mohammadi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Simultaneous Determination ◽  
Antihypertensive Agents ◽  
Electrochemical Sensing ◽  
Sensing Platform
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