Gas sensor based on p-phenylenediamine reduced graphene oxide

Hu, Nantao; Wang, Yanyan; Chai, Jing; Gao, Rungang; Liu, Yang; Kong, Eric Siu-Wai; Zhang, Yafei

doi:10.1016/j.snb.2012.01.016

Cited by 234 publications

(148 citation statements)

References 49 publications

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“…To overcome these limitations, many studies have been carried out to hybridize graphene with gassensitive metal (or metal oxide) nanoparticles (NPs), [13][14][15][16] exploit mesh-type substrates for the improvement of surface area, 17,18 and utilize reduced graphene oxide (rGO) with functional groups and defects for the enhancement of sensing performance. 19,20 In the case of metal (or metal oxide) NPs acting as catalysts, the speed of detection is very fast, but high operating temperature is required to obtain excellent sensitivity. Furthermore, a complicated annealing process is required to hybridize metal (or metal oxide) NPs with graphene.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive and wearable gas sensors consisting of chemically functionalized graphene oxide assembled on cotton yarn

Kang

Kim

et al. 2018

RSC Adv.

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Highly sensitive and wearable chemical sensors for the detection of toxic gas molecules are given significant attention for a variety of applications in human health care and environmental safety. Herein, we demonstrated fiber-type gas sensors based on graphene oxide functionalized with organic molecules such as heptafluorobutylamine (HFBA), 1-(2-methoxyphenyl)piperazine (MPP), and 4-(2-keto-1-benzimidazolinyl)piperidine (KBIP) by assembling functionalized graphene oxide (FGO) on a single yarn fabric. These gas sensors of FGO on yarn exhibited extraordinarily higher sensitivity upon exposure to gas molecules than chemically reduced graphene oxide due to many active functional groups on the GO surface. Furthermore, the mechanical stability and chemical durability of the resulting gas sensors are well-maintained. Based on these results, we expected that our sensors with high sensitive and wearability will provide a good premise for wearable chemical sensors-based multidisciplinary applications.

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Section: Introductionmentioning

confidence: 99%

Highly sensitive and wearable gas sensors consisting of chemically functionalized graphene oxide assembled on cotton yarn

Kang

Kim

et al. 2018

RSC Adv.

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“…Robinson et al demonstrated the use of reduced graphene oxide to detect chemical-warfare agents and explosives at parts-per-billion concentrations [16]. Recently, Hu et al demonstrated the use of chemically reduced graphene oxide (CRG) for the detection of dimethyl methylphosphonate (DMMP) [17].…”

Section: Introductionmentioning

confidence: 99%

Room-Temperature Humidity Sensing Using Graphene Oxide Thin Films

Naik¹,

Krishnaswamy²

2016

Graphene

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In this article, we report on a room-temperature humidity sensing device using graphene oxide (GO) thin films synthesized by chemical exfoliation. Changes in the device conductivity are measured for varying relative humidity in the experimental chamber. Experiments are carried out for relative humidity varying from 30% to 95%. We observe a difference in the results obtained for low relative humidity (<50%) and high relative humidity (>50%), and propose a sensing mechanism to explain this difference. Although the sensor exhibits some hysteresis at high relative humidities, a method to "reset" the sensor is also proposed. The sensing device has high sensitivity and fast response time.

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“…17 Aromatic amines, such as p-phenylenediamine (pPDA), were attached to graphene and applied to supercapacitors, 18 dopamine detection, 19 and gas sensors. 20 pPDA is expected to prevent graphene sheets from agglomeration because of its bulky aromatic structure. In addition, the presence of a primary amine bifunctionality allows for attachment with graphene from both sides: one side through the amidation of carboxylic groups on graphene oxide (GO) 21 and the other side through a ringopening reaction with epoxy monomer (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Epoxy/p‐phenylenediamine functionalized graphene oxide composites and evaluation of their fracture toughness and tensile properties

Hussein

Sarkar

et al. 2016

J of Applied Polymer Sci

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ABSTRACT:In an attempt to enhance the mechanical properties of epoxy/graphene-based composites, the interface was engineered through the functionalization of graphene oxide (GO) sheets with p-phenylenediamine; this resulted in p-phenylenediamine functionalized graphene oxide (GO-pPDA). The morphology and chemical structure of the GO-pPDA sheets were studied by spectroscopic methods, thermal analysis, X-ray diffraction, and transmission electron microscopy. The characterization results show the successful covalent functionalization of GO sheets through the formation of amide bonds. In addition, p-phenylenediamine were polymerized on graphene sheets to form crystalline nanospheres; this resulted in a GO/poly(p-phenylenediamine) hybrid. The mechanical properties of the epoxy/ GO-pPDA composite were assessed. Although the Young's modulus showed improvement, more significant improvements were observed in the strength, fracture strain, and plane-strain fracture toughness. These improvements were attributed to the unique microstructure and strong interface between GO-pPDA and the epoxy matrix.

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Gas sensor based on p-phenylenediamine reduced graphene oxide

Cited by 234 publications

References 49 publications

Highly sensitive and wearable gas sensors consisting of chemically functionalized graphene oxide assembled on cotton yarn

Highly sensitive and wearable gas sensors consisting of chemically functionalized graphene oxide assembled on cotton yarn

Room-Temperature Humidity Sensing Using Graphene Oxide Thin Films

Epoxy/p‐phenylenediamine functionalized graphene oxide composites and evaluation of their fracture toughness and tensile properties

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