Room-temperature ammonia gas sensor based on reduced graphene oxide nanocomposites decorated by Ag, Au and Pt nanoparticles

Karaduman, Irmak; Er, Engin; Çelikkan, Hüseyin; Erk, Nevin; Acar, Selim

doi:10.1016/j.jallcom.2017.06.152

Cited by 157 publications

(82 citation statements)

References 62 publications

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“…For toluene gas, 1.0 wt % GO-SnO 2 had the greatest sensitivity. Recently, Karaduman I et al from Gazi University synthesized ammonia gas sensors based on rGOdecorated by Ag, Au and Pt nanoparticles (NPs) using a single-step chemical reduction process in 2017 [89]. The responses for 1 ppm NH 3 were calculated as 6.52%, 2.87% and 0.5% for AgNPs-rGO, PtNPs-rGO and AuNPs-rGO, respectively.…”

Section: Gas Sensors Based On Graphene/metal or Metal Oxide Compositesmentioning

confidence: 99%

Research Progress of Gas Sensor Based on Graphene and Its Derivatives: A Review

2018

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Featured Application: gas sensors based on graphene and its derivatives have brilliant development prospects on innovating composite material and designing appropriate structure.Abstract: Gas sensors are devices that convert a gas volume fraction into electrical signals, and they are widely used in many fields such as environmental monitoring. Graphene is a new type of two-dimensional crystal material that has many excellent properties including large specific surface area, high conductivity, and high Young's modulus. These features make it ideally suitable for application for gas sensors. In this paper, the main characteristics of gas sensor are firstly introduced, followed by the preparation methods and properties of graphene. In addition, the development process and the state of graphene gas sensors are introduced emphatically in terms of structure and performance of the sensor. The emergence of new candidates including graphene, polymer and metal/metal oxide composite enhances the performance of gas detection significantly. Finally, the clear direction of graphene gas sensors for the future is provided according to the latest research results and trends. It provides direction and ideas for future research.2 of 21 excellent conductivity, and easy adsorption of gas molecules, and the surface can easily be modified by functional groups, so it has good gas sensing properties.Graphene, a monolayer of graphite sheet consisting of sp 2 hybridized carbon atoms covalently bonded to three other atoms which was first isolated by Geim and Novoselov using micro-mechanical peeling of graphite in 2004, so they won the 2010 Nobel Prize in Physics [8]. Graphene is the thinnest and highest strength material in nature at present and has the advantages of strong electric conductivity and heat conductivity, and is almost transparent and dense, thus attracts people's attention [9].Nowadays, there are many studies about graphene gas sensors focused on the performance improvement in the field of composite materials, computational chemistry and Micro-Electro-Mechanical System (MEMS). Considering the practical application of graphene gas sensor, we need to find the most potential direction. In this article, the development process and the state of art of graphene gas sensors are introduced. The direction of graphene gas sensors for the future is also provided. The review provides important reference for follow-up research work. Gas Sensor Key Parameters of Gas SensorGas sensors are the crucial components to detect the type and concentration of gas. The components can transform gas composition, gas concentration and other information from non-electricity to electricity to achieve the measurement of gas [10].The key parameters of gas sensor measuring performance include the following aspects [11]:

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Section: Gas Sensors Based On Graphene/metal or Metal Oxide Compositesmentioning

confidence: 99%

Research Progress of Gas Sensor Based on Graphene and Its Derivatives: A Review

2018

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“…10,22,23 The functionalization of rGO with functional materials (such as polymers, metals and metal oxide nanoparticles) has also been reported to improve its sensing efficiency. [24][25][26][27][28][29][30] Metal phthalocyanines (MPcs) show improved sensing characteristics due to their 18p-conjugated skeletons, netuned structures and high solubilities in solvents. [31][32][33][34] However, the low conductivities of MPc based gas sensors have limited their practical applications.…”

Section: Introductionmentioning

confidence: 99%

The effects of amino substituents on the enhanced ammonia sensing performance of PcCo/rGO hybrids

Wang

et al. 2018

RSC Adv.

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“…The main point is to control the sensitivity of the system to the impurity. Many papers are devoted to the development of sensors based on graphene [1][2][3], including functionalized ones [4,5].…”

Section: Introductionmentioning

confidence: 99%