Elaboration of Pd-nanoparticle decorated polyaniline films for room temperature NH3 gas sensors

Hien, Hoang Thi Minh; Giang, Ho Truong; Hiếu, Nguyễn Văn; Trung, Tran; Tuấn, Chu Văn

doi:10.1016/j.snb.2017.04.115

Cited by 82 publications

(21 citation statements)

References 39 publications

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“…[5][6][7] For example, the typical operating temperature of ethanol fueled solid oxide fuel cells (SOFCs) is 500-1000 C. 8 Thus, it is necessary to develop novel gas sensors that can be used in extreme conditions with rapid response/recovery time. In the past decades, gas sensors based on metal oxides, 9,10 graphene 11,12 and polymers 13,14 have been widely investigated due to their low cost, high carrier mobility and excellent designability. However, the long response/recovery time and not satisfactory performance at high temperature severely restrict their wide applications.…”

Section: Introductionmentioning

confidence: 99%

High temperature gas sensing performances of silicon carbide nanosheets with an n–p conductivity transition

Sun

Han

et al. 2018

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

High temperature gas sensing performances of silicon carbide nanosheets with an n–p conductivity transition

Sun

Han

et al. 2018

RSC Adv.

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“…Given that hydrogen is a very small molecule with a high degree of permeability through various materials and that its selective detection is difficult to achieve, the synthesis of sensitive material for sensors with improved performance is still a challenge [ 73 , 74 , 75 ].…”

Section: Synthesis Methodsmentioning

confidence: 99%

Synthesis Methods of Obtaining Materials for Hydrogen Sensors

Constantinoiu

Viespe

2021

Sensors

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The development of hydrogen sensors has acquired a great interest from researchers for safety in fields such as chemical industry, metallurgy, pharmaceutics or power generation, as well as due to hydrogen’s introduction as fuel in vehicles. Several types of sensors have been developed for hydrogen detection, including resistive, surface acoustic wave, optical or conductometric sensors. The properties of the material of the sensitive area of the sensor are of great importance for establishing its performance. Besides the nature of the material, an important role for its final properties is played by the synthesis method used and the parameters used during the synthesis. The present paper highlights recent results in the field of hydrogen detection, obtained using four of the well-known synthesis and deposition methods: sol-gel, co-precipitation, spin-coating and pulsed laser deposition (PLD). Sensors with very good results have been achieved by these methods, which gives an encouraging perspective for their use in obtaining commercial hydrogen sensors and their application in common areas for society.

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“…Nanocomposite materials created from conducting polymers such as polyaniline (PANi), polypyrrole (PPy), poly(3,4-ethylenedioxythiophene) (PEDOT), and inorganic nanomaterials have excellent characteristics that are not obtained by individual components, including high conductivity, high stability, and high electroactive surface area, leading to new promising applications [10][11][12][13]. These nanocomposites show advantageous properties of inorganic nanomaterials distributed in continuous polymer networks [14,15] and improvement of specifications of conducting polymers, including changes in electron structure of polymer chains, enhancement of charge transfer, and changes in conductivity of polymer chains [16,17]. Actually, several inorganic nanomaterials have been used to dope into the polymer networks, such as PANi/Ni [18], PANi/Au [19], PANi/WO3 [20], PANi/Mn2O3 [21], PANi/MnO2 [22] and PANi/MWCNTs [8] nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Multi-walled Carbon Nanotubes/Manganese Dioxide Nano- flowers-like/Polyaniline Nanowires Nanocomposite Modified Electrode: A New Platform for a Highly Sensitive Electrochemical Impedance DNA Sensor

Chu

Tran

et al. 2021

Preprint

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We describe in this report a development of label-free electrochemical DNA sensor based on a novel nanostructured electrode of multi-walled carbon nanotubes (MWCNTs)/ nano-flowers-like manganese dioxide (MnO2)/polyaniline nanowires (PANi NWs) nanocomposite. The nanocomposite was synthesized in-situ onto an interdigitated platinum microelectrode (Pt) using a combination of chemical and electrochemical synthesis methods: chemical preparation of MWCNTs/MnO2 and electropolymerization of PANi NWs. The fabricated MWCNTs/MnO2/PANi NWs was then used to develop a label-free electrochemical DNA sensor for a specific gene of Escherichia coli (E.coli) O157:H7 detection. The MWCNTs/MnO2/PANi NWs modified Pt electrode’s surface can facilitate for probe DNA strands immobilization and, therefore the electrochemical signal of the DNA sensors has been improved. The electrochemical impedance spectroscopy (EIS) measurements were conducted to investigate the output signals generated by the specific binding of probe and target DNA sequences. Obtained results indicated that the developed electrochemical biosensor can detect the target DNA in the linear range of 5 pM to 500 nM with a low limit of detection (LOD) at 4.42 × 10 –13 M. The research results demonstrated that the MWCNTs/MnO2/PANi NWs nanocomposite-based electrochemical DNA sensor has a great potential application to the development of highly sensitive and selective electrochemical DNA sensors to detect pathogenic agents.

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Elaboration of Pd-nanoparticle decorated polyaniline films for room temperature NH3 gas sensors

Cited by 82 publications

References 39 publications

High temperature gas sensing performances of silicon carbide nanosheets with an n–p conductivity transition

High temperature gas sensing performances of silicon carbide nanosheets with an n–p conductivity transition

Synthesis Methods of Obtaining Materials for Hydrogen Sensors

Multi-walled Carbon Nanotubes/Manganese Dioxide Nano- flowers-like/Polyaniline Nanowires Nanocomposite Modified Electrode: A New Platform for a Highly Sensitive Electrochemical Impedance DNA Sensor

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