Electrodeposited copper bismuth oxide as a low-cost, non-enzymatic electrochemical sensor for sensitive detection of uric acid and hydrogen peroxide

2021 ◽  
pp. 108627
Author(s):  
Gudipati Neeraja Sinha ◽  
Palyam Subramanyam ◽  
Vanjari Sivaramakrishna ◽  
Challapalli Subrahmanyam
Keyword(s):  
Hydrogen Peroxide ◽  
Uric Acid ◽  
Electrochemical Sensor ◽  
Bismuth Oxide ◽  
Low Cost ◽  
Sensitive Detection

Pencil graphite as an elegant electrochemical sensor for separation-free and simultaneous sensing of hypoxanthine, xanthine and uric acid in fish samples

2017 ◽  
Vol 9 (15) ◽  
pp. 2265-2274 ◽  
Author(s):  
Nandimalla Vishnu ◽  
Mansi Gandhi ◽  
Desikan Rajagopal ◽  
Annamalai Senthil Kumar
Keyword(s):  
Uric Acid ◽  
Electrochemical Sensor ◽  
Detection Method ◽  
Low Cost ◽  
Fish Samples ◽  
Simultaneous Sensing

Herein, we report a simple electroanalytical detection method based on ultra-low cost pencil graphite as an elegant sensor for simultaneous and separation-free detection of Hx, X and UA.

scholarly journals Construction and Application of a Non-Enzyme Hydrogen Peroxide Electrochemical Sensor Based on Eucalyptus Porous Carbon

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3464
Author(s):  
Shuisheng Wu ◽  
Nianyuan Tan ◽  
Donghui Lan ◽  
Chak-Tong Au ◽  
Bing Yi
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Sensor ◽  
Porous Carbon ◽  
Electrochemical Sensors ◽  
Low Cost ◽  
High Sensitivity ◽  
Inert Atmosphere ◽  
Phase Identification ◽  
X Ray Diffraction ◽  
Long Term Stability

Natural eucalyptus biomorphic porous carbon (EPC) materials with unidirectional ordered pores have been successfully prepared by carbonization in an inert atmosphere. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM) were employed to characterize the phase identification, microstructure and morphology analysis. The carbon materials were used to fabricate electrochemical sensors to detect hydrogen peroxide (H2O2) without any assistance of enzymes because of their satisfying electrocatalytic properties. It was immobilized on a glassy carbon electrode (GCE) with chitosan (CHIT) to fabricate a new kind of electrochemical sensor, EPC/CHIT/GCE, which showed excellent electrocatalytic activity in the reduction of H2O2. Meanwhile, EPC could also promote electron transfer with the help of hydroquinone. The simple and low-cost electrochemical sensor exhibited high sensitivity, and good operational and long-term stability.

Electrochemical sensor based on the Mn3O4/CeO2 nanocomposite with abundant oxygen vacancies for highly sensitive detection of hydrogen peroxide released from living cells

2021 ◽  
Vol 13 (14) ◽  
pp. 1672-1680
Author(s):  
Yalin Wu ◽  
Liping Lu ◽  
Zhihui Yu ◽  
Xiayan Wang
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Sensor ◽  
Oxygen Vacancies ◽  
Living Cells ◽  
Sensitive Detection ◽  
Reliable Determination ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

A novel electrochemical sensor based on the Mn3O4/CeO2 for reliable determination of extracellular H2O2 released from living cells was developed.

Hierarchical polystyrene@reduced graphene oxide–Pt core–shell microspheres for non-enzymatic detection of hydrogen peroxide

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73993-74002 ◽  
Author(s):  
Weilu Liu ◽  
Cong Li ◽  
Peng Zhang ◽  
Liu Tang ◽  
Yue Gu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Reduced Graphene Oxide ◽  
Sensitive Detection ◽  
Core Shell ◽  
Reduced Graphene ◽  
Enzymatic Detection

A non-enzymatic electrochemical sensor based on polystyrene@reduced graphene oxide (RGO)–Pt core–shell microspheres was developed for sensitive detection of hydrogen peroxide (H2O2).

Graphene Modified Molecular Imprinting Electrochemical Sensor for Determining the Content of Dopamine

2019 ◽  
Vol 15 (6) ◽  
pp. 628-634
Author(s):  
Rong Liu ◽  
Jie Li ◽  
Tongsheng Zhong ◽  
Liping Long
Keyword(s):  
Electrochemical Sensor ◽  
Molecular Imprinting ◽  
Neurological Disorders ◽  
Room Temperature ◽  
Low Cost ◽  
Differential Pulse ◽  
Current Response ◽  
Specific Selectivity ◽  
Pulse Voltammetry

Background: The unnatural levels of dopamine (DA) result in serious neurological disorders such as Parkinson’s disease. Electrochemical methods which have the obvious advantages of simple operation and low-cost instrumentation were widely used for determination of DA. In order to improve the measurement performance of the electrochemical sensor, molecular imprinting technique and graphene have always been employed to increase the selectivity and sensitivity. Methods: An electrochemical sensor which has specific selectivity to (DA) was proposed based on the combination of a molecular imprinting polymer (MIP) with a graphene (GR) modified gold electrode. The performance and effect of MIP film were investigated by differential pulse voltammetry (DPV) and cyclic voltammetry (CV) in the solution of 5.0 ×10-3 mol/L K3[Fe(CN)6] and K4[Fe(CN)6] with 0.2 mol/L KCl at room temperature. Results: This fabricated sensor has well repeatability and stability, and was used to determine the dopamine of urine. Under the optimized experiment conditions, the current response of the imprinted sensor was linear to the concentration of dopamine in the range of 1.0×10-7 ~ 1.0×10-5 mol/L, the linear equation was I (µA) = 7.9824+2.7210lgc (mol/L) with the detection limit of 3.3×10-8 mol/L. Conclusion: In this work, a highly efficient sensor for determination of DA was prepared with good sensitivity by GR and great selectivity of high special recognization ability by molecular imprinting membrane. This proposed sensor was used to determine the dopamine in human urine successfully.

Advanced Treatment of Coking Wastewater by Oxidation Process Using Pyrite and Hydrogen Peroxide

2013 ◽  
Vol 726-731 ◽  
pp. 2521-2525
Author(s):  
Zhi Yong Zhang ◽  
De Li Wu
Keyword(s):  
Hydrogen Peroxide ◽  
Oxidation Process ◽  
Low Cost ◽  
Oxygen Demand ◽  
Utilization Efficiency ◽  
Advanced Treatment ◽  
Coking Wastewater ◽  
Second Stage ◽  
Potential Alternative ◽  
High Utilization

Coking wastewater is a kind of recalcitrant wastewater including complicate compositions. Advanced treatment of coking wastewater by Fenton-Like reaction using pyrite as catalyst was investigated in this paper. The results show that the chemical oxygen demand (COD) of coking wastewater decreased significantly by method of coagulation combined with two-stage oxidation reaction. COD of wastewater can decrease from 250mg/l to 45mg/l after treatment, when 2g/L pyrite was used in each stage oxidation and the dosage of hydrogen peroxide (H2O2) is 0.2ml/l for first stage treatment, 0.1ml/l for second stage treatment respectively. The pyrite is effective to promote Fenton-Like reaction with low cost due to high utilization efficiency of H2O2, moreover, catalyst could be easily recovered and reused. The Fenton-Like reaction might be used as a potential alternative to advanced treatment of recalcitrant wastewater.

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