Realization of ppm-level CO detection with exceptionally high sensitivity using reduced graphene oxide-loaded SnO2 nanofibers with simultaneous Au functionalization

2016 ◽  
Vol 52 (19) ◽  
pp. 3832-3835 ◽  
Author(s):  
Jae-Hun Kim ◽  
Akash Katoch ◽  
Hyoun Woo Kim ◽  
Sang Sub Kim
Keyword(s):  
Carbon Monoxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Sensitivity ◽  
Reduced Graphene ◽  
Highly Sensitive ◽  
Co Detection ◽  
Ppm Level

We have realized the highly sensitive, selective ppm-level carbon monoxide (CO) detection based on graphene oxide (RGO) nanosheets-loaded SnO2 nanofibers with simultaneous Au functionalization.

Wrinkled reduced graphene oxide nanosheets for highly sensitive and easy recoverable NH3 gas detector

RSC Advances ◽  
2014 ◽  
Vol 4 (87) ◽  
pp. 46930-46933 ◽  
Author(s):  
Su Zhang ◽  
Di Zhang ◽  
Vitaly I. Sysoev ◽  
Olga V. Sedelnikova ◽  
Igor P. Asanov ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Sensitivity ◽  
Graphite Powder ◽  
Gas Detection ◽  
Graphene Oxide Nanosheets ◽  
Chemical Exfoliation ◽  
Reduced Graphene ◽  
Highly Sensitive ◽  
Gas Detector

Highly wrinkled reduced graphene oxide nanosheets were prepared by chemical exfoliation of ball-milled graphite powder. This material showed high sensitivity and simple recovery ability for NH3 gas detection.

scholarly journals A Highly Sensitive Amperometric Glutamate Oxidase Microbiosensor Based on a Reduced Graphene Oxide/Prussian Blue Nanocube/Gold Nanoparticle Composite Film-Modified Pt Electrode

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2924 ◽  
Author(s):  
Jing Chen ◽  
Qiwen Yu ◽  
Wei Fu ◽  
Xing Chen ◽  
Quan Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Prussian Blue ◽  
Reduced Graphene Oxide ◽  
High Sensitivity ◽  
Small Dimension ◽  
Simple Method ◽  
Promising Tool ◽  
Glutamate Oxidase ◽  
Reduced Graphene ◽  
Highly Sensitive

A simple method that relies only on an electrochemical workstation has been investigated to fabricate a highly sensitive glutamate microbiosensor for potential neuroscience applications. In this study, in order to develop the highly sensitive glutamate electrode, a 100 µm platinum wire was modified by the electrochemical deposition of gold nanoparticles, Prussian blue nanocubes, and reduced graphene oxide sheets, which increased the electroactive surface area; and the chitosan layer, which provided a suitable environment to bond the glutamate oxidase. The optimization of the fabrication procedure and analytical conditions is described. The modified electrode was characterized using field emission scanning electron microscopy, impedance spectroscopy, and cyclic voltammetry. The results exhibited its excellent sensitivity for glutamate detection (LOD = 41.33 nM), adequate linearity (50 nM–40 µM), ascendant reproducibility (RSD = 4.44%), and prolonged stability (more than 30 repetitive potential sweeps, two-week lifespan). Because of the important role of glutamate in neurotransmission and brain function, this small-dimension, high-sensitivity glutamate electrode is a promising tool in neuroscience research.

Crumpled sheets of reduced graphene oxide as a highly sensitive, robust and versatile strain/pressure sensor

Nanoscale ◽  
2017 ◽  
Vol 9 (27) ◽  
pp. 9581-9588 ◽  
Author(s):  
Subhajit Kundu ◽  
Rammohan Sriramdas ◽  
Kazi Rafsanjani Amin ◽  
Aveek Bid ◽  
Rudra Pratap ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Pressure Sensor ◽  
High Sensitivity ◽  
Reduced Graphene ◽  
Highly Sensitive

Taped crumpled rGO can be used to detect a wide variety of strain and pressure with high sensitivity and extreme robustness.

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