A green method to gold–graphene nanocomposite from cyclodextrin functionalized graphene for efficient non-enzymatic electrochemical sensing applications

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 32027-32033 ◽  
Author(s):  
R. Aswathi ◽  
Mohamed Mukthar Ali ◽  
Anurudha Shukla ◽  
K. Y. Sandhya
Keyword(s):  
Gold Nanoparticle ◽  
Electrochemical Sensing ◽  
Functionalized Graphene ◽  
Green Method ◽  
Sensing Properties ◽  
Sensing Applications ◽  
Graphene Nanocomposite

Here, we report a new and green method of synthesis of gold nanoparticle functionalized graphene (Au–Gr) from β-cyclodextrin functionalized Gr (CD–Gr) with excellent electrochemical sensing properties.

Hydrothermal preparation and electrochemical sensing properties of TiO2–graphene nanocomposite

2011 ◽  
Vol 83 (1) ◽  
pp. 78-82 ◽  
Author(s):  
Yang Fan ◽  
Hai-Ting Lu ◽  
Jin-Hang Liu ◽  
Chun-Peng Yang ◽  
Qiang-Shan Jing ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Hydrothermal Preparation ◽  
Sensing Properties ◽  
Graphene Nanocomposite

UV irradiation synthesis of an Au–graphene nanocomposite with enhanced electrochemical sensing properties

2013 ◽  
Vol 1 (32) ◽  
pp. 9189 ◽  
Author(s):  
Ping Wang ◽  
Zhong-Gang Liu ◽  
Xing Chen ◽  
Fan-Li Meng ◽  
Jin-Huai Liu ◽  
...  
Keyword(s):  
Uv Irradiation ◽  
Electrochemical Sensing ◽  
Sensing Properties ◽  
Graphene Nanocomposite

scholarly journals Biomolecules Electrochemical Sensing Properties of a PMo11V@N-Doped Few Layer Graphene Nanocomposite

Inorganics ◽  
2015 ◽  
Vol 3 (2) ◽  
pp. 178-193 ◽  
Author(s):  
Diana Fernandes ◽  
Marta Nunes ◽  
Ricardo Carvalho ◽  
Revathi Bacsa ◽  
Israel-Martyr Mbomekalle ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Sensing Properties ◽  
Layer Graphene ◽  
Graphene Nanocomposite ◽  
Few Layer Graphene

Well-defined polyindole–Au NPs nanobrush as a platform for electrochemical oxidation of ethanol

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Magdalena Warczak ◽  
Marianna Gniadek ◽  
Kamil Hermanowski ◽  
Magdalena Osial
Keyword(s):  
Conducting Polymers ◽  
Hybrid Material ◽  
Noble Metals ◽  
Electrochemical Impedance ◽  
Electrochemical Sensing ◽  
Alkaline Media ◽  
X Ray Diffraction ◽  
Long Term Stability ◽  
Sensing Applications ◽  
Energy Conversion Devices

Abstract Over the recent decades, conducting polymers have received great interest in many fields including microelectronics, energy conversion devices, and biosensing due to their unique properties like electrical conductivity, stability, and simple synthesis. Modification of conducting polymers with noble metals e.g. gold enhances their properties and opens new opportunities to also apply them in other fields like electrocatalysis. Here, we focus on the synthesis of hybrid material based on polyindole (PIN) nanobrush modified with gold nanoparticles and its application towards electrooxidation of ethanol. The paper presents systematic studies from synthesis to electrochemical sensing applications. For the characterization of PIN–Au composites, scanning electron microscopy and X-ray diffraction analyses were used. The electrocatalytic performance of the proposed hybrid material towards alcohol oxidation was studied in alkaline media by cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy techniques. The results show that PIN–Au hybrid can be employed as an effective and sensitive platform for the detection of alcohols, which makes it a promising material in electrocatalysis or sensors. Moreover, the proposed composite exhibits electrocatalytic activity towards ethanol oxidation, which combined with its good long-term stability opens the opportunity for its application in fuel cells.

scholarly journals Utilising Commercially Fabricated Printed Circuit Boards as an Electrochemical Biosensing Platform

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 793
Author(s):  
Uroš Zupančič ◽  
Joshua Rainbow ◽  
Pedro Estrela ◽  
Despina Moschou
Keyword(s):  
Printed Circuit Boards ◽  
Electrochemical Sensors ◽  
Cost Effective ◽  
Electrochemical Sensing ◽  
Label Free ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Sensing Applications ◽  
Electrochemical Biosensing ◽  
Pre Treatment

Printed circuit boards (PCBs) offer a promising platform for the development of electronics-assisted biomedical diagnostic sensors and microsystems. The long-standing industrial basis offers distinctive advantages for cost-effective, reproducible, and easily integrated sample-in-answer-out diagnostic microsystems. Nonetheless, the commercial techniques used in the fabrication of PCBs produce various contaminants potentially degrading severely their stability and repeatability in electrochemical sensing applications. Herein, we analyse for the first time such critical technological considerations, allowing the exploitation of commercial PCB platforms as reliable electrochemical sensing platforms. The presented electrochemical and physical characterisation data reveal clear evidence of both organic and inorganic sensing electrode surface contaminants, which can be removed using various pre-cleaning techniques. We demonstrate that, following such pre-treatment rules, PCB-based electrodes can be reliably fabricated for sensitive electrochemical biosensors. Herein, we demonstrate the applicability of the methodology both for labelled protein (procalcitonin) and label-free nucleic acid (E. coli-specific DNA) biomarker quantification, with observed limits of detection (LoD) of 2 pM and 110 pM, respectively. The proposed optimisation of surface pre-treatment is critical in the development of robust and sensitive PCB-based electrochemical sensors for both clinical and environmental diagnostics and monitoring applications.

Self-Assembled Gold Nanoparticle/Alkanedithiol Films:  Preparation, Electron Microscopy, XPS-Analysis, Charge Transport, and Vapor-Sensing Properties†

2003 ◽  
Vol 107 (30) ◽  
pp. 7406-7413 ◽  
Author(s):  
Yvonne Joseph ◽  
Isabelle Besnard ◽  
Miriam Rosenberger ◽  
Berit Guse ◽  
Heinz-Georg Nothofer ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Charge Transport ◽  
Gold Nanoparticle ◽  
Xps Analysis ◽  
Sensing Properties ◽  
Vapor Sensing ◽  
Self Assembled
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