Effective monitoring and classification of hydrogen and ammonia gases with a bilayer Pt/SnO2 thin film sensor

Thai, Nguyen Xuan; Duy, Nguyễn Văn; Toàn, Nguyễn Văn; Hung, Chu Manh; Hiếu, Nguyễn Văn; Hòa, Nguyễn Đức

doi:10.1016/j.ijhydene.2019.11.072

Cited by 65 publications

(19 citation statements)

References 40 publications

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“…: 72-1147) is the only crystalloid compound for FTO glass (Figure b). In the XPS investigations, Sn 3d and O 1s XPS signals were clearly observed (Figure c,d), and their features are consistent with most reports related to FTO glass. − Because of the low content of F in FTO glass, the XPS signal of F was not obvious. Commercial FTO glasses are widely used as substrates for the preparation of electrodes and photoelectrodes because the F-doped SnO 2 layer of FTO glasses has good conductivity and chemical stability in neutral, alkaline, and acidic solutions.…”

Section: Resultssupporting

confidence: 84%

Objective Observations of the Electrochemical Production of H₂O₂ in KHCO₃ Aqueous Electrolyte and Related Application Inspirations

et al. 2021

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The electrochemical production of H 2 O 2 from twoelectron water oxidation in a HCO 3 − -containing aqueous electrolyte has been recently developed, but the objective issues of H 2 O 2 decomposition, low purity, and inconvenient storage options have not drawn enough attention in previous reports. In the present work, commercial fluorine-doped SnO 2 (FTO) glass was investigated as a model anode material for the electrochemical production of H 2 O 2 in a KHCO 3 aqueous electrolyte. Although H 2 O 2 was electrochemically produced in the FTO-glass-anodebased cell, the electrochemical decomposition and nonstorability of H 2 O 2 products in a KHCO 3 aqueous electrolyte were also observed. On the basis of the activation property of HCO 3 − in the conversion of H 2 O 2 into • OH, the electrochemically produced H 2 O 2 in a KHCO 3 aqueous electrolyte was investigated to achieve the degradation of methylene blue and tetracycline, respectively. Our work reveals objective issues about the electrochemical synthesis of H 2 O 2 in a HCO 3 − -containing electrolyte and provides inspired applications of this research.

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Section: Resultssupporting

confidence: 84%

Objective Observations of the Electrochemical Production of H₂O₂ in KHCO₃ Aqueous Electrolyte and Related Application Inspirations

et al. 2021

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“…This sensing idea spread quickly in the field of LPG sensing, and for hydrogen as well [22]. Over the past decades, the general principle of n-type SnO2 semiconductor sensors for hydrogen and other gases was broadened to other metal oxides, like SnO, ZnO, V2O3, Fe2O3, Mn2O3, Co3O4,Cr2O3, TiO2, WO3, NiO, In2O3, CuO, SrO, Nb2O5, GeO2, MoO3, La2O3, Ta2O5, Nd2O3, CeO2, and this research direction is very active to this day [23][24][25][26][27][28][29][30][31]. The relatively high operating temperature of even up to…”

Section: Semiconductor Metal Oxides As Receptor Materials For Hydroge...mentioning

confidence: 99%

“…This sensing idea spread quickly in the field of LPG sensing, and for hydrogen as well [22]. Over the past decades, the general [23][24][25][26][27][28][29][30][31]. The relatively high operating temperature of even up to 300-400 • C was a key negative feature of early SnO 2 -based hydrogen sensors.…”

Section: Semiconductor Metal Oxides As Receptor Materials For Hydroge...mentioning

confidence: 99%

Graphene-Based Hydrogen Gas Sensors: A Review

Ilnicka

Łukaszewicz

2020

Processes

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Graphene is a material gaining attention as a candidate for new application fields such as chemical sensing. In this review, we discuss recent advancements in the field of hydrogen gas sensors based on graphene. Accordingly, the main part of the paper focuses on hydrogen gas sensors and examines the influence of different manufacturing scenarios on the applicability of graphene and its derivatives as key components of sensing layers. An overview of pristine graphene customization methods is presented such as heteroatom doping, insertion of metal/metal oxide nanosized domains, as well as creation of graphene-polymer blends. Volumetric structuring of graphene sheets (single layered and stacked forms) is also considered as an important modifier of its effective use. Finally, a discussion of the possible advantages and weaknesses of graphene as sensing material for hydrogen detection is provided.

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“…Ganesh et al [24] reported that some noble metal doping in the nanomaterials could change their morphology and energy band structure, which resulted in the increase of speci c surface area and the formation of more active reaction center of gas molecules on the nanomaterial surface, thereby leading to the enhancement in the gas sensing properties of nanomaterials. Thai et al [25] demonstrated that some noble metal catalysts such as Pt or Pd possessed strong reactivity to some gaseous molecules, especially some containing-hydrogen atoms molecules, such as NH 3 , ethanol, H 2 , and lique ed petroleum gas. Chen et al [26] synthesized a Pt/NiO thin lm-based gas sensor for monitoring NH 3 .…”

Section: Introductionmentioning

confidence: 99%

NH3 sensing performance of Pt-doped WO3·0.33H2O microshuttles induced from scheelite leaching solution

Zhou

Zhao

et al. 2021

Vacuum

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WO 3 •0.33H 2 O microshuttles (WMSs) self-assembled by numerous nanorods along the same direction were prepared based on a cheap tungsten-containing metallurgical raw material by combination processes of NaOH leaching and one-step hydrothermal method. The microstructures and gas sensing properties of various concentrations (0, 0.7, 1.0, and 1.3 mol%) of Pt-doped WMSs were investigated to improve their performance. The microstructural characterizations demonstrated that the WMSs assembled by one-dimensional WO 3 •0.33H 2 O nanorods were approximately 0.8−1.9 µm in diameter. Such nanorods exhibited a single hexagonal structure with their diameters ranging from 17 to 62 nm. The gas sensing properties indicated that Pt-doped WMSs showed superior gas sensing performance in terms of the sensor response and NH 3 selectivity in the operating temperature range of 25−225 o C as compared with pure one, and simultaneously Pt doping could signi cantly reduce the detection limit of NH 3. Especially, 1.0 mol% Pt-doped WMSs exhibited highest response of 28.2 to 1000 ppm NH 3 at 175 o C, which was 4 times higher than pure one at 50 o C. The remarkably enhanced gas sensing performance of Pt-doped WMSs to NH 3 could be ascribed to the electronic and chemical sensitization mechanisms of noble metal nanoparticles.

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Effective monitoring and classification of hydrogen and ammonia gases with a bilayer Pt/SnO2 thin film sensor

Cited by 65 publications

References 40 publications

Objective Observations of the Electrochemical Production of H₂O₂ in KHCO₃ Aqueous Electrolyte and Related Application Inspirations

Objective Observations of the Electrochemical Production of H₂O₂ in KHCO₃ Aqueous Electrolyte and Related Application Inspirations

Graphene-Based Hydrogen Gas Sensors: A Review

NH3 sensing performance of Pt-doped WO3·0.33H2O microshuttles induced from scheelite leaching solution

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Effective monitoring and classification of hydrogen and ammonia gases with a bilayer Pt/SnO2 thin film sensor

Cited by 65 publications

References 40 publications

Objective Observations of the Electrochemical Production of H2O2 in KHCO3 Aqueous Electrolyte and Related Application Inspirations

Objective Observations of the Electrochemical Production of H2O2 in KHCO3 Aqueous Electrolyte and Related Application Inspirations

Graphene-Based Hydrogen Gas Sensors: A Review

NH3 sensing performance of Pt-doped WO3·0.33H2O microshuttles induced from scheelite leaching solution

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Objective Observations of the Electrochemical Production of H₂O₂ in KHCO₃ Aqueous Electrolyte and Related Application Inspirations

Objective Observations of the Electrochemical Production of H₂O₂ in KHCO₃ Aqueous Electrolyte and Related Application Inspirations