Fabrication of polypyrrole/Zn2SnO4 nanofilm for ultra-highly sensitive ammonia sensing application

Zhang, Dongzhi; Wu, Zhengfang; Zong, Xiaoqi; Zhang, Yong

doi:10.1016/j.snb.2018.08.001

Cited by 147 publications

(56 citation statements)

References 51 publications

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“…Besides PANI, PPy is also one of the most ideal sensing candidates in the VOCs detection, since it possess obvious advantages of good environmental stability, low operating temperature, easy synthesis and reversible redox reaction [29,[54][55][56]. Generally speaking, similar to the preparation of PANI/ metal oxide nanocomposites, the typical process of preparing conductive PPy/metal oxide nanocomposites usually includes the following three steps: first, nanostructured metal oxides were prepared by chemical bath deposition and in air calcination [57], in-situ growing [38], hydrothermal synthesis, sol-gel method [54], surfactantassisted method and calcination [36,43,55], template based hydrothermal synthesis [45,56], ultrasound assisted precipitation method [29], or carbon microspheres templated method [56,58]. Then, conducting polymer was synthesized by in situ oxidative polymerization method [32], electrochemical deposition [57], chemical oxidation polymerization [29], or solution method [38,40,55].…”

Section: Metal Oxide-conducting Polymer Nanocompositesmentioning

confidence: 99%

“…Then, the ferric cations (Fe 3+ ) were modified onto the surface of SnO 2 , followed by a vapor deposition polymerization step in the vacuum environment to form the organic/inorganic hybrid structure ( Figure 6 ). Dongzhi Zhang et al [ 56 ] demonstrated NH 3 gas sensors based on PPy/Zn 2 SnO 4 nanocomposite with extremely high sensitivity. PPy nanospheres were combined with Zn 2 SnO 4 hollow spheres through a layer-by-layer alternative deposition.…”

Section: Conducting Polymer-based Nanocomposite Gas Sensorsmentioning

confidence: 99%

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Conducting polymer-inorganic nanocomposite-based gas sensors: a review

Yan

Yang

et al. 2020

Science and Technology of Advanced Materials

112

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With the rapid development of conductive polymers, they have shown great potential in room-temperature chemical gas detection, as their electrical conductivity can be changed upon exposure to oxidative or reductive gas molecules at room temperature. However, due to their relatively low conductivity and high affinity toward volatile organic compounds and water molecules, they always exhibit low sensitivity, poor stability, and gas selectivity, which hinder their practical gas sensor applications. In addition, inorganic sensitive materials show totally different advantages in gas sensors, such as high sensitivity, fast response to low concentration analytes, high surface area, and versatile surface chemistry, which could complement the conducting polymers in terms of the sensing characteristics. It seems to be a win-win choice to combine inorganic sensitive materials with polymers for gas detection due to their synergistic effects, which has attracted extensive interests in gas-sensing applications. In this review, we summarize the recent development in polymer-inorganic nanocomposite based gas sensors. The roles of inorganic nanomaterials in improving the gas-sensing performances of conducting polymers are introduced and the progress of conducting polymer-inorganic nanocomposites including metal oxides, metal, carbon (carbon nanotube, graphene), and ternary composites are presented. Finally, a conclusion and a perspective in the field of gas sensors incorporating conducting polymer-inorganic nanocomposite are summarized.

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Section: Metal Oxide-conducting Polymer Nanocompositesmentioning

confidence: 99%

Section: Conducting Polymer-based Nanocomposite Gas Sensorsmentioning

confidence: 99%

Conducting polymer-inorganic nanocomposite-based gas sensors: a review

Yan

Yang

et al. 2020

Science and Technology of Advanced Materials

112

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“…Besides, various metals and/or metal oxides were also introduced to further enhance the response/recovery kinetics of the sensing materials. Chemiresistor gas sensing behavior of NH 3 based on nanostructured PPY/SnO 2 [141], PPY/ZnO [142][143][144], PPY/Zn 2 SnO 4 [145], PPY/Ag-TiO 2 [146], PPY/silicon nanowires (PPY/ SNWs) [147], PANI/SnO 2 [148], PANI/ZnO [149], PANI/In 2 O 3 [150], PANI/TiO 2 [151], PANI/flower-like WO 3 [152], PANI/SnO 2 /rGO [153], PANI-TiO 2 -Au [154], and Ag-AgCl/PPY [155] has recently been studied so far. The CP/metal oxide nanocomposite thin films exhibited an outstanding response time of 2 S for NH 3 at very low concentration of 50 ppb in air with respect to methanol and ethanol vapors [156].…”

Section: Polymer-absorption Sensors (Chemiresistors)mentioning

confidence: 99%

Gas Sensors Based on Conducting Polymers

Torad¹,

Ayad²

2020

Gas Sensors

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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.

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“…Ammonia is one of the most harmful environmental pollutants. If the concentration of ammonia in the environment exceeds 300 ppm, it may damage the human cell [ 1 , 2 , 3 , 4 , 5 ]. It may also cause many diseases of the eyes, kidneys, liver, respiratory tract, as well as skin.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Reproducible and Selective Ammonia Vapor Sensor-Pellet of Polypyrrole/Cerium Oxide Nanocomposite for Prompt Detection at Room Temperature

et al. 2021

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Polypyrrole (PPy) and polypyrrole/cerium oxide nanocomposite (PPy/CeO2) were prepared by the chemical oxidative method in an aqueous medium using anhydrous ferric chloride (FeCl3) as an oxidant. The successful formulation of materials was confirmed by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and transmittance electron microscopy (TEM). A four-in-line probe device was used for studying DC electrical conductivity and ammonia vapor sensing properties of PPy and PPy/CeO2. The significant improvement in both the conductivity and sensing parameters of PPy/CeO2 compared to pristine PPy reveals some synergistic/electronic interaction between PPy and cerium oxide nanoparticles (CeO2 NPs) working at molecular levels. The initial conductivity (i.e., conductivity at room temperature) was found to be 0.152 Scm−1 and 1.295 Scm−1 for PPy and PPy/CeO2, respectively. Also, PPy/CeO2 showed much better conductivity retention than pristine PPy under both the isothermal and cyclic ageing conditions. Ammonia vapor sensing was carried out at different concentration (0.01, 0.03, 0.05, 0.1, 0.2, 0.3, 0.4, and 0.5 vol %). The sensing response of PPy/CeO2 varied with varying concentrations. At 0.5 vol % ammonia concentration, the % sensing response of PPy and PPy/CeO2 sensor was found to be 39.1% and 93.4%, respectively. The sensing efficiency of the PPy/CeO2 sensor was also evaluated at 0.4. 0.3, 0.2, 0.1, 0.05, 0.03, and 0.01 vol % ammonia concentration in terms of % sensing response, response/recovery time, reversibility, selectivity as well as stability at room temperature.

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Fabrication of polypyrrole/Zn2SnO4 nanofilm for ultra-highly sensitive ammonia sensing application

Cited by 147 publications

References 51 publications

Conducting polymer-inorganic nanocomposite-based gas sensors: a review

Conducting polymer-inorganic nanocomposite-based gas sensors: a review

Gas Sensors Based on Conducting Polymers

Fabrication of Reproducible and Selective Ammonia Vapor Sensor-Pellet of Polypyrrole/Cerium Oxide Nanocomposite for Prompt Detection at Room Temperature

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