A high charge efficiency electrode by self-assembling sulphonated reduced graphene oxide onto carbon fibre: towards enhanced capacitive deionization

2014 ◽  
Vol 2 (10) ◽  
pp. 3484 ◽  
Author(s):  
Haibo Li ◽  
Francois Zaviska ◽  
Sen Liang ◽  
Jin Li ◽  
Lijun He ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Carbon Fibre ◽  
Reduced Graphene Oxide ◽  
Capacitive Deionization ◽  
High Charge ◽  
Self Assembling ◽  
Reduced Graphene

scholarly journals Reduced Graphene Oxide Fibre Electrodes for Drug Sensing

Proceedings ◽  
2021 ◽  
Vol 68 (1) ◽  
pp. 18
Author(s):  
Sutthima Sriprasertsuk ◽  
John R. Varcoe ◽  
Carol Crean
Keyword(s):  
Cyclic Voltammetry ◽  
Graphene Oxide ◽  
Carbon Fibre ◽  
Reduced Graphene Oxide ◽  
Limit Of Detection ◽  
Linear Range ◽  
Oxidation Peak ◽  
Reduced Graphene ◽  
Fibre Sensor ◽  
Model Drug

Reduced graphene oxide (rGO) fibre electrodes and their ability to sense paracetamol (as model drug) were studied. rGO was electrodeposited onto carbon fibre by two different approaches: potentiostatic deposition and cyclic voltammetry (CV) in the presence of graphene oxide solution. Carbon fibre electrodes coated with rGO (after five CV cycles) could sense paracetamol with an oxidation peak at 0.62 V (vs. Ag/AgCl). The limit of detection of this fibre sensor was found to be 36.3 µM with a linear range of 50–500 µM of paracetamol (R2 = 0.9901).

scholarly journals Reduced Graphene Oxide Carbon Yarn Electrodes for Drug Sensing

2021 ◽  
Vol 2 ◽  
Author(s):  
Sutthima Sriprasertsuk ◽  
Shuai Zhang ◽  
Gordon Wallace ◽  
Jun Chen ◽  
John R. Varcoe ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Detection Limit ◽  
Carbon Fibre ◽  
Reduced Graphene Oxide ◽  
Simultaneous Detection ◽  
Differential Pulse ◽  
Reduced Graphene ◽  
Electrochemically Deposited ◽  
Pulse Voltammetry

A modified carbon fibre yarn sensor was developed for the voltammetric determination of paracetamol and its interferents (dopamine and ascorbic acid). Reduced graphene oxide (rGO) was electrochemically deposited onto a carbon fibre yarn. Further modification was achieved using polypyrrole (PPy) coated onto the rGO carbon fibre yarn via electropolymerisation of pyrrole with cyclic voltammetry (CV). The surface of the rGO and PPy-rGO carbon fibre electrodes were characterised using Raman spectroscopy and scanning electron microscopy. The rGO and PPy-rGO carbon fibres had a 3.5-fold and 7-fold larger electrochemical surface area compared to bare carbon fibre (calculated using the Randles-Sevcik equation). Two clearly distinguished oxidation peaks at 0.49 and 0.25 V (vs. Ag/AgCl) were observed at the rGO fibre electrode during the simultaneous detection of paracetamol and dopamine, respectively, by CV. The detection limit (3σ S/N) of the rGO carbon fibre electrode for differential pulse voltammetry (DPV) determination of paracetamol was at 21.1 and 6.0 µM for dopamine. In comparison, the simultaneous determination of paracetamol and dopamine by CV at the PPy-rGO fibre electrode gave oxidation peaks of paracetamol and dopamine at 0.55 and 0.25 V (vs. Ag/AgCl), respectively. The detection limit (3σ S/N) for paracetamol was notably improved to 3.7 µM and maintained at 6.0 µM for dopamine at the PPy-rGO carbon fibre electrode during DPV.

scholarly journals Preparation and application of reduced graphene oxide as the conductive material for capacitive deionization

2014 ◽  
Vol 15 (1) ◽  
pp. 38-44 ◽  
Author(s):  
Ayu Tyas Utami Nugrahenny ◽  
Jiyoung Kim ◽  
Sang-Kyung Kim ◽  
Dong-Hyun Peck ◽  
Seong-Ho Yoon ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Capacitive Deionization ◽  
Conductive Material ◽  
Reduced Graphene
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