Gas sensor device for high-performance ethanol sensing using α-MnO2 nanoparticles

Ibrahim, Ahmed A.; Kumar, Rajesh; Albargi, Hasan B.; Zeng, Wen; Alhmami, M.A.M.; Alsaiari, Mabkhoot; Baskoutas, Sotirios

doi:10.1016/j.matlet.2020.129232

Cited by 29 publications

(14 citation statements)

References 16 publications

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“…The diffraction peaks at 12 200), (310), (211), (301), (411), (600), (521), ( 200), (541), and (312) diffraction planes, respectively [30,31]. These patterns are in excellent agreement with those reported in the literature [16,32] and JCPDS-44-0141 (Figure 1). The high crystallinity and purity of the α-MnO 2 nanowires were also confirmed from the sharpness of the diffraction peaks and the absence of any diffraction peak corresponding to any impurity.…”

Section: Characterizations and Properties Of Synthesized α-Mno 2 Nanowiressupporting

confidence: 89%

“…NiO nanowires with cubic phase showed a shorter response time (17 s) and recovery time (19 s) toward 200 ppm HCHO gas [11]. Additionally, ZnO nano/microrods [12], Ag-loaded ZnO [13], TiO 2 nanotubes [14], tubular SnO 2 [15], MnO 2 nanoparticles [16], SnO 2 nanosheets [17,18], and many more have been reported as gas sensors for HCHO.…”

Section: Introductionmentioning

confidence: 99%

“…MnO 2 has a high structural flexibility and exists in different crystallographic phases, i.e., α-MnO 2 , β-MnO 2 , γ-MnO 2 , and δ-MnO 2 [20]. Several morphologies of MnO 2 , such as nanoparticles [16], nanowires [21], nanowires [22], nanospheres [23], hollow micro-spheres [24], thin films [25], rectangular pyramid [26], nano-micro-flowers [27], nanoflakes [28], and many more, have been synthesized through different synthetic methods. Recently, Umar et al explored the ethanol gas sensing applications of the α-MnO 2 nanoparticles synthesized hydrothermally [16].…”

Section: Introductionmentioning

confidence: 99%

“…Several morphologies of MnO 2 , such as nanoparticles [16], nanowires [21], nanowires [22], nanospheres [23], hollow micro-spheres [24], thin films [25], rectangular pyramid [26], nano-micro-flowers [27], nanoflakes [28], and many more, have been synthesized through different synthetic methods. Recently, Umar et al explored the ethanol gas sensing applications of the α-MnO 2 nanoparticles synthesized hydrothermally [16]. Barreca et al [29] reported synthesis of β-MnO 2 nano-systems through physical plasma enhanced chemical vapor deposition and analyzed the gas-sensing behavior toward acetonitrile and ethylene.…”

Section: Introductionmentioning

confidence: 99%

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α-MnO2 Nanowires as Potential Scaffolds for a High-Performance Formaldehyde Gas Sensor Device

Ibrahim

Kumar²,

Algadi

et al. 2021

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Herein, we report a chemi-resistive sensing method for the detection of formaldehyde (HCHO) gas. For this, α-MnO2 nanowires were synthesized hydrothermally and examined for ascertaining their chemical composition, crystal phase, morphology, purity, and vibrational properties. The XRD pattern confirmed the high crystallinity and purity of the α-MnO2 nanowires. FESEM images confirmed a random orientation and smooth-surfaced wire-shaped morphologies for as-synthesized α-MnO2 nanowires. Further, the synthesized nanowires with rounded tips had a uniform diameter throughout the length of the nanowires. The average diameter of the α-MnO2 nanowires was found to be 62.18 nm and the average length was ~2.0 μm. Further, at an optimized temperature of 300 °C, the fabricated HCHO sensor based on α-MnO2 nanowires demonstrated gas response, response, and recovery times of 19.37, 18, and 30 s, respectively.

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Section: Characterizations and Properties Of Synthesized α-Mno 2 Nanowiressupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

α-MnO2 Nanowires as Potential Scaffolds for a High-Performance Formaldehyde Gas Sensor Device

Ibrahim

Kumar²,

Algadi

et al. 2021

Coatings

Self Cite

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“…Consequently, the response value is seriously influenced by the surface state of the sensitive material. Research on sensitive materials has gradually developed from irregular powder materials in the beginning to micro-nano materials at the present stage, such as various 0-dimensional (nanoparticles [33,34], quantum dots [35]), 1-dimensional (nanowires [36], nanofibers), 2-dimensional (nanosheets [37]) and 3-dimensional (flower-like [38,39], spherical [40]) nanostructured materials. Due to the unique properties of its nanometer size, nanomaterials have a sharp edge in the field of gas sensing.…”

Section: Control the Microstructure And Morphology Of Sensitive Materialsmentioning

confidence: 99%

Strategies for Improving the Sensing Performance of Semiconductor Gas Sensors for High-Performance Formaldehyde Detection: A Review

2021

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Formaldehyde is a poisonous and harmful gas, which is ubiquitous in our daily life. Long-term exposure to formaldehyde harms human body functions; therefore, it is urgent to fabricate sensors for the real-time monitoring of formaldehyde concentrations. Metal oxide semiconductor (MOS) gas sensors is favored by researchers as a result of their low cost, simple operation and portability. In this paper, the mechanism of formaldehyde detection by gas sensors is introduced, and then the ways of ameliorating the response of gas sensors for formaldehyde detection in recent years are summarized. These methods include the control of the microstructure and morphology of sensing materials, the doping modification of matrix materials, the development of new semiconductor sensing materials, the outfield control strategy and the construction of the filter membrane. These five methods will provide a good prerequisite for the preparation of better performing formaldehyde gas sensors.

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Recent Advances in ZnO Based Electrochemical Ethylene Gas Sensors for Evaluation of Fruit Maturity

Mathew

Das

2021

Springer Proceedings in Materials

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India is the largest producer of fruits and vegetables in the world. However, a major portion of agro-products is wasted during harvesting, shipping, and storage, i.e., negligence in the food supply chain management (FSCM) system. Globally, one third of food produced is wasted. Importantly, two-third of the wastage of food occurs due to limitations in the supply chain management system. Wastage of perishable agro-products due to negligence in FSCM is a critical issue, especially in the case of agro-products like fruit. Therefore, the early detection and segregation of fruits are critical to reduce agro-product wastage. A typical indicator of maturity and ripening of fruits is the rate of generation and concentration of ethylene gas. Even though, literature encompasses examples of a variety of ethylene gas sensors, ZnO based electrochemical ethylene gas sensors depict numerous advantages compared to other sensor variants. ZnO is an extensively studied wide band gap semiconductor for sensing applications. When used as a sensing layer material it 'senses', ethylene gas by changing its band gap and thereby electrical property. Further, the sensitivity and selectivity of the pristine ZnO vary with shape, substrate, and metal doping. This paper elucidates a review of recent advances in ZnO based electrochemical sensors for ethylene gas detection. The review covers various levels of design abstraction that include material and device. In addition, we summarize the design challenges and future trends in the development of ZnO based electrochemical ethylene gas sensors.

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Gas sensor device for high-performance ethanol sensing using α-MnO2 nanoparticles

Cited by 29 publications

References 16 publications

α-MnO2 Nanowires as Potential Scaffolds for a High-Performance Formaldehyde Gas Sensor Device

α-MnO2 Nanowires as Potential Scaffolds for a High-Performance Formaldehyde Gas Sensor Device

Strategies for Improving the Sensing Performance of Semiconductor Gas Sensors for High-Performance Formaldehyde Detection: A Review

Recent Advances in ZnO Based Electrochemical Ethylene Gas Sensors for Evaluation of Fruit Maturity

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