Utilizing ZnO Nanorods for CO gas detection by SPR technique

Fallah, Hoorieh; Asadishad, Tannaz; Shafiei, Mojtaba; Shokri, Babak; Javadianaghezi, S.; Mohammed, Waleed S.; Hamidi, Seyedeh Mehri

doi:10.1016/j.optcom.2020.125490

Cited by 16 publications

(4 citation statements)

References 38 publications

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“…To overcome these limitations, researchers have shifted their focus towards either reducing the working temperature of the sensing materials [6][7][8][9] and/or limiting the power consumption [10][11][12][13][14][15]. Several strategies have been proposed to solve these issues, such as modifying the band gap of the sensing materials [16,17], decorated metal nanoparticles [2,6,[18][19][20][21][22][23],…”

Section: Introductionmentioning

confidence: 99%

“…Generally, photo-activated gas sensors rely on UV-light activation [29,31,32] since most gas sensors are based on wide band gap metal oxides (e.g., SnO 2 and ZnO). Following this trend, researchers have been focused on reducing the energy needed to activate the reaction mechanisms (i.e., using visible light [6,16,28,29,33]): band gap engineering by choosing sensing materials with suitable bandgap, and localized surface plasmon resonance (LSPR) in metal nanoparticles [6,[19][20][21]25,28,34].…”

Section: Introductionmentioning

confidence: 99%

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Visible-Light-Driven Room Temperature NO2 Gas Sensor Based on Localized Surface Plasmon Resonance: The Case of Gold Nanoparticle Decorated Zinc Oxide Nanorods (ZnO NRs)

et al. 2022

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In this work, nitrogen dioxide (NO2) gas sensors based on zinc oxide nanorods (ZnO NRs) decorated with gold nanoparticles (Au NPs) working under visible-light illumination with different wavelengths at room temperature are presented. The contribution of localized surface plasmon resonant (LSPR) by Au NPs attached to the ZnO NRs is demonstrated. According to our results, the presence of LSPR not only extends the functionality of ZnO NRs towards longer wavelengths (green light) but also increases the response at shorter wavelengths (blue light) by providing new inter-band gap energetic states. Finally, the sensing mechanism based on LSPR Au NPs is proposed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Visible-Light-Driven Room Temperature NO2 Gas Sensor Based on Localized Surface Plasmon Resonance: The Case of Gold Nanoparticle Decorated Zinc Oxide Nanorods (ZnO NRs)

et al. 2022

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“…Concerning its morphology, ZnO has been obtained as nanostructures, which include nanoneedles, nanosticks, nanocouples, nanoflakes, nanosprings, nanotubes, nanorods, and nanowires [ 31 , 34 , 35 ], as well as porous and dense films [ 36 ]; as gas sensing performance is mainly dependent on the morphology of the material. Significant achievements have been attained in the fabrication of gas sensors based on ZnO structures, including biosensors [ 16 , 30 , 36 , 37 , 38 , 39 , 40 , 41 ]. Nevertheless, further research is needed to improve CO detection at low operating temperatures (e.g., room temperature) and with excellent selectivity to differentiate two gases with similar behaviors, considering the effect of the relative humidity on the gas sensing performance [ 38 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in ZnO-Based Carbon Monoxide Sensors: Role of Doping

Pineda-Reyes

Herrera-Rivera

Rojas-Chávez

et al. 2021

Sensors

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Monitoring and detecting carbon monoxide (CO) are critical because this gas is toxic and harmful to the ecosystem. In this respect, designing high-performance gas sensors for CO detection is necessary. Zinc oxide-based materials are promising for use as CO sensors, owing to their good sensing response, electrical performance, cost-effectiveness, long-term stability, low power consumption, ease of manufacturing, chemical stability, and non-toxicity. Nevertheless, further progress in gas sensing requires improving the selectivity and sensitivity, and lowering the operating temperature. Recently, different strategies have been implemented to improve the sensitivity and selectivity of ZnO to CO, highlighting the doping of ZnO. Many studies concluded that doped ZnO demonstrates better sensing properties than those of undoped ZnO in detecting CO. Therefore, in this review, we analyze and discuss, in detail, the recent advances in doped ZnO for CO sensing applications. First, experimental studies on ZnO doped with transition metals, boron group elements, and alkaline earth metals as CO sensors are comprehensively reviewed. We then focused on analyzing theoretical and combined experimental–theoretical studies. Finally, we present the conclusions and some perspectives for future investigations in the context of advancements in CO sensing using doped ZnO, which include room-temperature gas sensing.

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“…1 These attractive physical properties give this oxide several potential applications in optoelectronics such as ultraviolet (UV) photodetectors, transparent electrodes, gas sensors, photocatalytic and antibacterial activities. [2][3][4][5][6] Doping by transition metal (TM) elements such as Fe, Co, Mn, Ni, and Mg is an efficient technique for improving the properties of zinc oxide and its performances in different applications. [7][8][9][10][11][12] Among several elements for doping of ZnO, iron (Fe) is a suitable dopant not for spintronic devices only, but also in optoelectronic applications.…”

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confidence: 99%

Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Mahroug

Berra

et al. 2023

ECS J. Solid State Sci. Technol.

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Pure and iron-doped ZnO films were deposited by thermal oxidation of sputtered metallic zinc and iron. The effect of iron (Fe) doping on the optical, morphology, structural, electrical, and photocurrent properties of zinc oxide films was examined. X-ray diffraction analysis shows a wurtzite structure with preferential orientation for all films. Fe doping reduced the crystallite size. The different calculated structure parameters confirm the incorporation of Fe (Fe3+) in the ZnO lattice. The surface morphology of thin films measured using atomic force microscopy revealed that the Fe doping could markedly decrease the grains size and the root mean square roughness of films. For all films, the transmittance analysis shows a transmittance above 90% in the visible region and with an increase in the Fe concentration, the transmittance, the absorption in the UV region, and the gap of ZnO were increased. The effect of Fe doping on different optical parameters was discussed in detail. The photoluminescence analysis of pure and doped ZnO exhibits one ultraviolet emission (384 nm) and green emission. Compared to pure ZnO, the ultraviolet peak intensity decreased as Fe content increased. The electrical resistivity was decreased and the photocurrent properties of ZnO were enhanced by Fe doping.

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Utilizing ZnO Nanorods for CO gas detection by SPR technique

Cited by 16 publications

References 38 publications

Visible-Light-Driven Room Temperature NO2 Gas Sensor Based on Localized Surface Plasmon Resonance: The Case of Gold Nanoparticle Decorated Zinc Oxide Nanorods (ZnO NRs)

Visible-Light-Driven Room Temperature NO2 Gas Sensor Based on Localized Surface Plasmon Resonance: The Case of Gold Nanoparticle Decorated Zinc Oxide Nanorods (ZnO NRs)

Recent Advances in ZnO-Based Carbon Monoxide Sensors: Role of Doping

Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

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