Polyoxometalate-like sub-nanometer molybdenum(vi)-oxo clusters for sensitive, selective and stable H2O2 sensing

2020 ◽  
Vol 56 (66) ◽  
pp. 9465-9468 ◽  
Author(s):  
Rongji Liu ◽  
Yuyang Luo ◽  
Yuanhao Zheng ◽  
Guangjin Zhang ◽  
Carsten Streb
Keyword(s):  
Glassy Carbon ◽  
Mesoporous Carbon ◽  
Screen Printed Electrodes ◽  
H2o2 Sensing ◽  
Screen Printed

Polyoxometalate-like sub-nanometer molybdenum(vi)-oxo clusters supported on mesoporous carbon are stably deposited on glassy carbon and screen-printed electrodes suitable for selective, sensitive and stable H2O2 sensing.

scholarly journals Electrochemical characterisation of novel screen-printed carbon paste electrodes for voltammetric measurements

2017 ◽  
Vol 82 (7-8) ◽  
pp. 865-877 ◽  
Author(s):  
Milan Sýs ◽  
Elmorsy Khaled ◽  
Radovan Metelka ◽  
Karel Vytřas
Keyword(s):  
Glassy Carbon ◽  
Carbon Paste Electrode ◽  
Carbon Powder ◽  
Carbon Paste ◽  
Surface Characterisation ◽  
Carbon Paste Electrodes ◽  
Screen Printed Electrodes ◽  
Paste Electrode ◽  
Carbon Based ◽  
Screen Printed

This work is focused on the homemade screen-printed carbon paste electrode containing basically graphite powder (or glassy carbon powder), poly(vinylbchloride) (PVC) and paraffin oil. It compares the electrochemical properties of conventional carbon-based electrodes and prepared screen-printed carbon paste electrodes towards [Fe(CN)6]3-/[Fe(CN)6]4- and quinone/hydroquinone redox couples. Significant attention is paid to the development of the corresponding carbon inks, printing and the surface characterisation of the resulting electrodes by the scanning electron microscopy. An optimization consisted of the selection of the organic solvent, the optimal content of the used polymer with the chosen paste binder, appropriate isolation of electric contact, etc. Very similar properties of the prepared screen-printed electrodes, containing only corresponding carbon powder and 3 % PVC, with their conventional carbon paste electrode and glassy carbon-based electrodes, were observed during their characterisation. Screen-printed electrodes, with the pasting liquid usually provided satisfactory analytical data. Moreover, they can be used in the flow injection analysis and could undoubtedly replace the carbon paste grooved electrodes. It can be assumed that certain progress in the development of electrode materials was achieved by this research.

Electrochemical Determination of Dopamine with Ruthenium(III)-Modified Glassy Carbon and Screen-Printed Electrodes

2017 ◽  
Vol 50 (10) ◽  
pp. 1602-1619 ◽  
Author(s):  
Safeta Redžić ◽  
Emira Kahrović ◽  
Adnan Zahirović ◽  
Emir Turkušić
Keyword(s):  
Glassy Carbon ◽  
Electrochemical Determination ◽  
Screen Printed Electrodes ◽  
Screen Printed

scholarly journals Phosphate Modified Screen Printed Electrodes by LIFT Treatment for Glucose Detection

Biosensors ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 91 ◽  
Author(s):  
Francesco Milano ◽  
Livia Giotta ◽  
Daniela Chirizzi ◽  
Simos Papazoglou ◽  
Christina Kryou ◽  
...  
Keyword(s):  
Glassy Carbon ◽  
Glucose Sensor ◽  
Adsorbed Layer ◽  
Target Surface ◽  
Force Microscopy ◽  
Atomic Force ◽  
Screen Printed Electrodes ◽  
Forward Transfer ◽  
Glucose Electrooxidation ◽  
Screen Printed

The design of new materials as active layers is important for electrochemical sensor and biosensor development. Among the techniques for the modification and functionalization of electrodes, the laser induced forward transfer (LIFT) has emerged as a powerful physisorption method for the deposition of various materials (even labile materials like enzymes) that results in intimate and stable contact with target surface. In this work, Pt, Au, and glassy carbon screen printed electrodes (SPEs) treated by LIFT with phosphate buffer have been characterized by scanning electron microscopy and atomic force microscopy to reveal a flattening effect of all surfaces. The electrochemical characterization by cyclic voltammetry shows significant differences depending on the electrode material. The electroactivity of Au is reduced while that of glassy carbon and Pt is greatly enhanced. In particular, the electrochemical behavior of a phosphate LIFT treated Pt showed a marked enrichment of hydrogen adsorbed layer, suggesting an elevated electrocatalytic activity towards glucose oxidation. When Pt electrodes modified in this way were used as an effective glucose sensor, a 1–10 mM linear response and a 10 µM detection limit were obtained. A possible role of phosphate that was securely immobilized on a Pt surface, as evidenced by XPS analysis, enhancing the glucose electrooxidation is discussed.

Derivatization of SWCNTs with cobalt phthalocyanine residues and applications in screen printed electrodes for electrochemical detection of thiocholine

2011 ◽  
Vol 56 (11) ◽  
pp. 3988-3995 ◽  
Author(s):  
Elena Jubete ◽  
Kamila Żelechowska ◽  
Oscar A. Loaiza ◽  
Pedro J. Lamas ◽  
Estibalitz Ochoteco ◽  
...  
Keyword(s):  
Electrochemical Detection ◽  
Cobalt Phthalocyanine ◽  
Screen Printed Electrodes ◽  
Screen Printed

scholarly journals Toward the Rapid Diagnosis of Sepsis: Detecting Interleukin-6 in Blood Plasma Using Functionalized Screen-Printed Electrodes with a Thermal Detection Methodology

2021 ◽  
Author(s):  
Robert D. Crapnell ◽  
Whitchuta Jesadabundit ◽  
Alejandro García-Miranda Ferrari ◽  
Nina C. Dempsey-Hibbert ◽  
Marloes Peeters ◽  
...  
Keyword(s):  
Blood Plasma ◽  
Interleukin 6 ◽  
Rapid Diagnosis ◽  
Screen Printed Electrodes ◽  
Thermal Detection ◽  
In Blood Plasma ◽  
Screen Printed

Enhanced voltammetric response of monosodium glutamate on screen-printed electrodes modified with NiAl layered double hydroxide films

2021 ◽  
pp. 101055
Author(s):  
Dora Domnica Baciu ◽  
Ruxandra Bîrjega ◽  
Valentina Mărăscu ◽  
Rodica Zăvoianu ◽  
Andreea Matei ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Monosodium Glutamate ◽  
Screen Printed Electrodes ◽  
Double Hydroxide ◽  
Screen Printed
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