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 Ammonia Gas Detection by Tannic Acid Functionalized and Reduced Graphene Oxide at Room Temperature

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sweejiang Yoo ◽  
Xin Li ◽  
Yuan Wu ◽  
Weihua Liu ◽  
Xiaoli Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Tannic Acid ◽  
Room Temperature ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Gas Detection ◽  
Ammonia Gas ◽  
Reduced Graphene

Reduced graphene oxide (rGO) based chemiresistor gas sensor has received much attention in gas sensing for high sensitivity, room temperature operation, and reversible. Here, for the first time, we present a promising chemiresistor for ammonia gas detection based on tannic acid (TA) functionalized and reduced graphene oxide (rGOTA functionalized). Green reductant of TA plays a major role in both reducing process and enhancing the gas sensing properties ofrGOTA functionalized. Our results showrGOTA functionalizedonly selective to ammonia with excellent respond, recovery, respond time, and recovery times.rGOTA functionalizedelectrical resistance decreases upon exposure to NH3where we postulated that it is due to n-doping by TA and charge transfer betweenrGOTA functionalizedand NH3through hydrogen bonding. Furthermore,rGOTA functionalizedhinders the needs for stimulus for both recovery and respond. The combination of greener sensing material and simplicity in overall sensor design provides a new sight for green reductant approach of rGO based chemiresistor gas sensor.

Excellent gas detection of ZnO nanofibers by loading with reduced graphene oxide nanosheets

2015 ◽  
Vol 221 ◽  
pp. 1499-1507 ◽  
Author(s):  
Zain Ul Abideen ◽  
Akash Katoch ◽  
Jae-Hun Kim ◽  
Yong Jung Kwon ◽  
Hyoun Woo Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Detection ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene ◽  
Zno Nanofibers

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.

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.

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.

scholarly journals Green Synthesis of Reduced Graphene Oxide Using Ascorbic Acid

2020 ◽  
pp. 1313-1319
Author(s):  
Hayder A Hessain ◽  
J. J. Hassan
Keyword(s):  
Ascorbic Acid ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Low Cost ◽  
Graphite Powder ◽  
X Ray ◽  
Chemical Exfoliation ◽  
Reduced Graphene ◽  
Synthesized Materials ◽  
Modified Hummers Method

A green and low-cost method was used to prepare graphene oxide (GO) and reduced graphene oxide (rGO) by chemical exfoliation of graphite powder by modified Hummers method, followed by reduction using ascorbic acid. X-ray diffractometry (XRD) and field emission scanning electron microscopy (FE-SEM) were used to analyze the structure and morphology of the synthesized materials. Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible spectroscopy were used to identify the formation of the GO and rGO

Hybrid two-dimensional nickel oxide-reduced graphene oxide nanosheets for supercapacitor electrodes

2021 ◽  
Vol 164 ◽  
pp. 105979
Author(s):  
Xin Gao ◽  
Hengwei Zhang ◽  
Erjun Guo ◽  
Fei Yao ◽  
Zengze Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Nickel Oxide ◽  
Reduced Graphene Oxide ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene
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