Low-temperature hydrogen sensor based on sputtered tin dioxide nanostructures through slow deposition rate

Shaalan, Nagih M.; Hamad, D.

doi:10.1016/j.apsusc.2022.153857

Cited by 11 publications

(5 citation statements)

References 50 publications

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“…The photocurrent response demonstrates that 1-C-C 3 N 4 possesses a higher photocurrent density than the pristine g-C 3 N 4 under light illumination (figure 2(e)) [49]. At the same time, 1-C-C 3 N 4 exhibits a smaller arc radius as observed from the Nyquist plot of electrochemical impedance spectroscopy in figure 2(f), proving the lower charge transfer resistance in 1-C-C 3 N 4 [50]. The value of solution resistance (Rs) for g-C 3 N 4 and 1-C-C 3 N 4 is 35 Ω.…”

Section: (B))mentioning

confidence: 62%

One-step synthesis of C quantum dots/C doped g-C₃N₄ photocatalysts for visible-light-driven H₂ production from water splitting

Cao¹,

Jin²,

Han³

et al. 2022

J. Phys. D: Appl. Phys.

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Graphitic carbon nitride (g-C3N4) is gaining more and more attentions as a promising metal-free photocatalyst for H2 production. Nevertheless, from the perspective of practical applications, the photocatalytic performance over g-C3N4 in visible-light region needs a further improvment. In this work, C doping and C quantum dots (QDs) are co-integrated in g-C3N4 by a one-step thermal polymerization method to obtain an advanced C QDs/C doped g-C3N4 photocatalyst. The synergistic effects of C doping and C QDs modification promote the photocatalytic activity of g-C3N4 significantly. The optimal C QDs/C doped g-C3N4 exhibits a significant improvement on visible-light-driven photocatalytic hydrogen production (509 μmol g-1 h-1) with an apparent quantum yield (AQE) at 420 nm reaching 1.24%, which is approximately 9-fold enhancement than that of pristine g-C3N4. The increased photocatalytic activity mainly benefits from the enhanced visible light absorption and carrier separation efficiency. This study may open a new perspective for the design and fabrication of C-modified g-C3N4 for photocatalytic hydrogen production.

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Section: (B))mentioning

confidence: 62%

One-step synthesis of C quantum dots/C doped g-C₃N₄ photocatalysts for visible-light-driven H₂ production from water splitting

Cao¹,

Jin²,

Han³

et al. 2022

J. Phys. D: Appl. Phys.

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…”

Section: Resultsmentioning

confidence: 99%

“…Upon exposure to reducing gas (formaldehyde), the ionized oxygen species could react with the formaldehyde molecules to release the trapped electrons into the SnO 2 conduction band, thereby narrowing the thickness of the electron depletion layer and reducing the resistance value of the sensor (Rg). The chemical reactions are as follows [53][54][55] as it can hide the SnO2 surface and become the dominant conductive path, hindering the desired sensing function. Moreover, increasing the SnS2 content further degrades the quality of the n-n heterojunction, weakening its effect.…”

Section: Gas-sensing Mechanismmentioning

confidence: 99%

In Situ Fabrication of SnS2/SnO2 Heterostructures for Boosting Formaldehyde−Sensing Properties at Room Temperature

Meng,

Xie,

Wang

et al. 2023

Nanomaterials

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Formaldehyde, as a harmful gas produced by materials used for decorative purposes, has a serious impact on human health, and is also the focus and difficulty of indoor environmental polution prevention; hence, designing and developing gas sensors for the selective measurement of formaldehyde at room temperature is an urgent task. Herein, a series of SnS2/SnO2 composites with hollow spherical structures were prepared by a facile hydrothermal approach for the purpose of formaldehyde sensing at room temperature. These novel hierarchical structured SnS2/SnO2 composites−based gas sensors demonstrate remarkable selectivity towards formaldehyde within the concentration range of sub-ppm (0.1 ppm) to ppm (10 ppm) at room temperature. Notably, the SnS2/SnO2−2 sensor exhibits an exceptional formaldehyde-sensing performance, featuring an ultra-high response (1.93, 0.1 ppm and 17.51, 10 ppm), as well as good repeatability, long-term stability, and an outstanding theoretical detection limit. The superior sensing capabilities of the SnS2/SnO2 composites can be attributed to multiple factors, including enhanced formaldehyde adsorption, larger specific surface area and porosity of the hollow structure, as well as the synergistic interfacial incorporation of the SnS2/SnO2 heterojunction. Overall, the excellent gas sensing performance of SnS2/SnO2 hollow spheres has opened up a new way for their detection of trace formaldehyde at room temperature.

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“…Nanomaterials prepared in various forms improve the properties of the materials and open new avenues for their application in industrial food. For example, nanomaterials, such as metal oxides [20], carbon nanotubes [15,21], and graphene, have been used in many chemical gas sensors to identify the existence of volatile organic compounds that are produced in food products owing to their spoilage and dangerous processes that may occur during the ripening, storage, and transportation of food [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Gases in Food Production and Monitoring: Recent Advances in Target Chemiresistive Gas Sensors

2022

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The rapid development of the human population has created demand for an increase in the production of food in various fields, such as vegetal, animal, aquaculture, and food processing. This causes an increment in the use of technology related to food production. An example of this technology is the use of gases in the many steps of food treatment, preservation, processing, and ripening. Additionally, gases are used across the value chain from production and packaging to storage and transportation in the food and beverage industry. Here, we focus on the long-standing and recent advances in gas-based food production. Although many studies have been conducted to identify chemicals and biological contaminants in foodstuffs, the use of gas sensors in food technology has a vital role. The development of sensors capable of detecting the presence of target gases such as ethylene (C2H4), ammonia (NH3), carbon dioxide (CO2), sulfur dioxide (SO2), and ethanol (C2H5OH) has received significant interest from researchers, as gases are not only used in food production but are also a vital indicator of the quality of food. Therefore, we also discuss the latest practical studies focused on these gases in terms of the sensor response, sensitivity, working temperatures, and limit of detection (LOD) to assess the relationship between the gases emitted from or used in foods and gas sensors. Greater interest has been given to heterostructured sensors working at low temperatures and flexible layers. Future perspectives on the use of sensing technology in food production and monitoring are eventually stated. We believe that this review article gathers valuable knowledge for researchers interested in food sciences and sensing development.

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Low-temperature hydrogen sensor based on sputtered tin dioxide nanostructures through slow deposition rate

Cited by 11 publications

References 50 publications

One-step synthesis of C quantum dots/C doped g-C₃N₄ photocatalysts for visible-light-driven H₂ production from water splitting

One-step synthesis of C quantum dots/C doped g-C₃N₄ photocatalysts for visible-light-driven H₂ production from water splitting

In Situ Fabrication of SnS2/SnO2 Heterostructures for Boosting Formaldehyde−Sensing Properties at Room Temperature

Gases in Food Production and Monitoring: Recent Advances in Target Chemiresistive Gas Sensors

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Low-temperature hydrogen sensor based on sputtered tin dioxide nanostructures through slow deposition rate

Cited by 11 publications

References 50 publications

One-step synthesis of C quantum dots/C doped g-C3N4 photocatalysts for visible-light-driven H2 production from water splitting

One-step synthesis of C quantum dots/C doped g-C3N4 photocatalysts for visible-light-driven H2 production from water splitting

In Situ Fabrication of SnS2/SnO2 Heterostructures for Boosting Formaldehyde−Sensing Properties at Room Temperature

Gases in Food Production and Monitoring: Recent Advances in Target Chemiresistive Gas Sensors

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Product

Resources

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One-step synthesis of C quantum dots/C doped g-C₃N₄ photocatalysts for visible-light-driven H₂ production from water splitting

One-step synthesis of C quantum dots/C doped g-C₃N₄ photocatalysts for visible-light-driven H₂ production from water splitting