Doping composite of polyaniline and reduced graphene oxide with palladium nanoparticles for room-temperature hydrogen-gas sensing

Zou, Yongjin; Wang, Qingyong; Xiang, Cuili; Tang, Chengying; Chu, Hailiang; Qiu, Shujun; Yan, Erhu; Xu, Fen; Sun, Lixian

doi:10.1016/j.ijhydene.2016.02.023

Cited by 104 publications

(36 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The combination of graphene and PANI showed positive synergistic effect on ammonia detection that the response was 59.2% to 50 ppm NH 3 . The material also showed great response to hydrogen gas, which is reported by Zou Y et al from Guilin University of Electronic Technology [78]. A t res of 20 s and t rec 50 s were obtained when the sensor was exposed to 1 vol % hydrogen at 25 • C. The large specific surface area of the PANI-GO composite and the catalytic activity of the Pd nanoparticles were the key factors of enhancement of the interaction between the hydrogen molecules and sensing surface led to the improvement in hydrogen-gas-sensing performance.…”

Section: Gas Sensors Based On Graphene/polymer Compositessupporting

confidence: 56%

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

2018

View full text Add to dashboard Cite

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]:

show abstract

Section: Gas Sensors Based On Graphene/polymer Compositessupporting

confidence: 56%

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

2018

View full text Add to dashboard Cite

show abstract

“…Incorporation of Cu nanoparticles improved the response and the recovery times, in addition to its excellent selectivity toward NH 3 due to doping and dedoping processes of PANI. Composite of Pd-PANI-rGO [158] has been recently synthesized to fabricate a highly sensitive and selective chemiresistive H 2 gas sensor. In addition to high surface area of the PANI-GO composite, the fast spillover effect and hydrogen dissociation over Pd significantly enhanced the sensing performance.…”

Section: Polymer-absorption Sensors (Chemiresistors)mentioning

confidence: 99%

Gas Sensors Based on Conducting Polymers

Torad¹,

Ayad²

2020

Gas Sensors

View full text Add to dashboard Cite

Since the discovery of conducting polymers (CPs), their unique properties and tailor-made structures on-demand have shown in the last decade a renaissance and have been widely used in fields of chemistry and materials science. The chemical and thermal stability of CPs under ambient conditions greatly enhances their utilizations as active sensitive layers deposited either by in situ chemical or by electrochemical methodologies over electrodes and electrode arrays for fabricating gas sensor devices, to respond and/or detect particular toxic gases, volatile organic compounds (VOCs), and ions trapping at ambient temperature for environmental remediation and industrial quality control of production. Due to the extent of the literature on CPs, this chapter, after a concise introduction about the development of methods and techniques in fabricating CP nanomaterials, is focused exclusively on the recent advancements in gas sensor devices employing CPs and their nanocomposites. The key issues on nanostructured CPs in the development of state-of-the-art miniaturized sensor devices are carefully discussed. A perspective on next-generation sensor technology from a material point of view is demonstrated, as well. This chapter is expected to be comprehensive and useful to the chemical community interested in CPs-based gas sensor applications.

show abstract

“…Figure 1 shows the XRD patterns of RGO and graphene oxide. Graphene oxide (GO) has a clear peak centered at 2θ = 10.91 o , that correspond to the (002) reflection of piled up graphene oxide sheets [24]. The interlayer spacing of the used graphite and the prepared GO were 0.336 and 0.7984 nm, respectively.…”

Section: Characterization Techniquesmentioning

confidence: 99%

“…The interlayer spacing of the used graphite and the prepared GO were 0.336 and 0.7984 nm, respectively. The change in the interlayer spacing indicates the presence of some oxygen containing groups on graphene oxide sheets due to the oxidation and implying the exfoliation of graphite [24][25]. After chemical reduction by hydrazine, the sharp (002) peak of graphene oxide is shifted to 2θ ≈ 24 o and became broader, implying a disorder in the reduced graphene sheets.…”

Section: Characterization Techniquesmentioning

confidence: 99%

Synthesis and Characterization of Polyaniline/Mn3O4/Reduced Graphene Oxide Nanocomposite

et al. 2019

View full text Add to dashboard Cite

T HE present work is concerned with the synthesis and studying the electrical and dielectric properties of Polyaniline (PANI)/Mn 3 O 4 /Reduced Graphene Oxide (RGO) nanocomposites using the Broadband Dielectric Spectroscopy technique. Polyaniline/Mn 3 O 4 and polyaniline/Mn 3 O 4 /RGO nanocomposites were prepared using in-situ polymerization. To investigate the structural and morphology of the prepared samples, XRD, FTIR, HRTEM and SEM techniques were used. XRD results of pure Mn 3 O 4 and PANI showed that PANI has crystallinity to some extent and the formation of Mn 3 O 4 as a major phase with crystallite size ~20 nm is obtained. In case of nanocomposite samples, PANI/Mn 3 O 4 and PANI /Mn 3 O 4 /RGO revealed a slight disappearance of the characteristic peaks of Mn 3 O 4 , which may be attributed to the covering of Mn 3 O 4 surface by PANI. FTIR analysis of the nanocomposite samples indicated that the characteristic absorption peaks are shifted to higher wavenumbers compared with that of pure PANI confirming the interaction between PANI, graphene and Mn 3 O 4. The morphological study of the samples revealed a porous surface of micro aggregates of Mn 3 O 4 and PANI enveloped by RGO sheets and showed the distribution of Mn 3 O 4 nanoparticle and PANI nanofibers on and between the thin sheets of RGO. The value of dc conductivity is rather high, and the prepared nanocomposites could be considered as synthetic metals from the conductivity point of view of such plastic electrode materials.

show abstract

Doping composite of polyaniline and reduced graphene oxide with palladium nanoparticles for room-temperature hydrogen-gas sensing

Cited by 104 publications

References 45 publications

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

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

Gas Sensors Based on Conducting Polymers

Synthesis and Characterization of Polyaniline/Mn3O4/Reduced Graphene Oxide Nanocomposite

Contact Info

Product

Resources

About