3D printed CuO semiconducting gas sensor for ammonia detection at room temperature

Chaloeipote, Gun; Prathumwan, Rat; Subannajui, Kittitat; Wisitsoraat, Anurat; Wongchoosuk, Chatchawal

doi:10.1016/j.mssp.2020.105546

Cited by 94 publications

(55 citation statements)

References 60 publications

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“…In the case of GQDs/AgNPs nanocomposite, both response and recovery times of GQD/AgNPs sensor are 15 s. The GQD/AgNPs sensor clearly shows a faster response and recovery time at the same conditions. It should be noted that the response and recovery times were calculated as the time to reach 90% of the final equilibrium value [ 51 ].…”

Section: Resultsmentioning

confidence: 99%

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High-performance resistive humidity sensor based on Ag nanoparticles decorated with graphene quantum dots

et al. 2021

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In this work, we present a low-cost, fast and simple fabrication of resistive-type humidity sensors based on the graphene quantum dots (GQDs) and silver nanoparticles (AgNPs) nanocomposites. The GQDs and AgNPs were synthesized by hydrothermal method and green reducing agent route, respectively. UV–Vis spectrophotometer, X-ray photoelectron spectroscopy and field-emission transmission electron microscopy were used to characterize quality, chemical bonding states and morphology of the nanocomposite materials and confirm the successful formation of core/shell-like AgNPs/GQDs structure. According to sensing humidity results, the ratio of GQDs/AgNPs 1 : 1 nanocomposite exhibits the best humidity response of 98.14% with exponential relation in the humidity range of 25–95% relative humidity at room temperature as well as faster response/recovery times than commercial one at the same condition. The sensing mechanism of the high-performance GQDs/AgNPs humidity sensor is proposed via Schottky junction formation and intrinsic synergistic effects of GQDs and AgNPs.

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Section: Resultsmentioning

confidence: 99%

“…8: 210407 GQD/AgNPs sensor clearly shows a faster response and recovery time at the same conditions. It should be noted that the response and recovery times were calculated as the time to reach 90% of the final equilibrium value [51].…”

Section: Humidity Sensing Performancementioning

confidence: 99%

High-performance resistive humidity sensor based on Ag nanoparticles decorated with graphene quantum dots

et al. 2021

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“…used functionalized graphene quantum dotes to detect ammonia with a LOD of 10 ppm. In 2021, Chaloeipote et al [36] . fabricated a 3D printed CuO‐based ammonia sensor with a LOD of 25 ppm.…”

Section: Resultsmentioning

confidence: 99%

“…In 2020, Arunragsa et al [35] used functionalized graphene quantum dotes to detect ammonia with a LOD of 10 ppm. In 2021, Chaloeipote et al [36] fabricated a 3D printed CuO-based ammonia sensor with a LOD of 25 ppm. Despite their room-temperature operation, these sensors can't fulfill the requirements for breath ammonia measurements.…”

Section: D) Discussionmentioning

confidence: 99%

Copper Fluoride Doped Polypyrrole for Portable and Enhanced Ammonia Sensing at Room Temperature

2021

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Point-of-care (POC) monitoring of breath ammonia has emerged as a great approach for non-invasive chronic kidney disease (CKD) diagnosis. Polypyrrole (PPy) is recognized as a suitable polymer material for breath ammonia sensing. Here we describe the copper fluoride (CuF 2 ) doping effect on sensing performance of the ammonia gas sensor based on PPy. At first, PPy was synthesized by chemical oxidative polymerization and characterized by scanning electron microscopy, energy dispersive X-ray analysis, and Fourier Transform Infrared Spectroscopy techniques. The CuF 2 was doped to the polymer by an aqueous ion exchange process. A portable sensing system was developed for portable ammonia detection by measuring the resistance variation of the fabricated electrode from synthesized materials. The gas-sensing results disclose that the CuF 2 -PPy based sensor displays the highest response to 2 ppm NH 3 , which is 3 times higher than that of the pure PPy sensor. The low limit of detection (LOD) value for pure PPy was found to be 0.19 ppm, which has been decreased to 0.02 ppm for CuF2 doped PPy. The CuF 2 -PPy resistive sensor exhibits a sustainable, selective, and stable sensing response to ammonia even in the presence of 60 % humidity. Moreover, the fabricated setup is low-cost, user-friendly, and suitable enough to be used at the point of care and CKD diagnosis applications.

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“…CuO nano/microstructures such as flower-shaped [25], nanoneedles [26], nanorods [27], nanowires [28], and nanosheets [29] have been synthesized utilizing hydrothermal, sol-gel, coprecipitation, electrospinning techniques. Owing to these versatile features, CuO nanostructures have been explored for numerous highly toxic volatile organic compounds and gases like ammonia [30], acetone [31], alcohols [32], liquified petroleum gas [33], carbon monoxide [34], sulphur dioxide [35], nitrogen dioxide [36] and many more. A detailed literature survey revealed that the two-dimensional CuO nanomaterials are rarely reported for the sensing of H 2 S gas.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Leaf-Shaped CuO Nanosheets Based Sensor Device for Enhanced Hydrogen Sulfide Gas Sensing Application

Algadi

Kumar²,

Akhtar

et al. 2021

Chemosensors

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Herein, a simple, economical and low temperature synthesis of leaf-shaped CuO nanosheets is reported. As-synthesized CuO was examined through different techniques including field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), X-ray diffraction (XRD), fourier transform infrared spectroscopic (FTIR) and Raman spectroscopy to ascertain the purity, crystal phase, morphology, vibrational, optical and diffraction features. FESEM and TEM images revealed a thin leaf-like morphology for CuO nanosheets. An interplanar distance of ~0.25 nm corresponding to the (110) diffraction plane of the monoclinic phase of the CuO was revealed from the HRTEM images XRD analysis indicated a monoclinic tenorite crystalline phase of the synthesized CuO nanosheets. The average crystallite size for leaf-shaped CuO nanosheets was found to be 14.28 nm. Furthermore, a chemo-resistive-type gas sensor based on leaf-shaped CuO nanosheets was fabricated to effectively and selectively detect H2S gas. The fabricated sensor showed maximum gas response at an optimized temperature of 300 °C towards 200 ppm H2S gas. The corresponding response and recovery times were 97 s and 100 s, respectively. The leaf-shaped CuO nanosheets-based gas sensor also exhibited excellent selectivity towards H2S gas as compared to other analyte gases including NH3, CH3OH, CH3CH2OH, CO and H2. Finally, we have proposed a gas sensing mechanism based upon the formation of chemo-resistive CuO nanosheets.

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3D printed CuO semiconducting gas sensor for ammonia detection at room temperature

Cited by 94 publications

References 60 publications

High-performance resistive humidity sensor based on Ag nanoparticles decorated with graphene quantum dots

High-performance resistive humidity sensor based on Ag nanoparticles decorated with graphene quantum dots

Copper Fluoride Doped Polypyrrole for Portable and Enhanced Ammonia Sensing at Room Temperature

Ultrathin Leaf-Shaped CuO Nanosheets Based Sensor Device for Enhanced Hydrogen Sulfide Gas Sensing Application

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