A low temperature catalytic-type combustible gas sensor based on Pt supported zeolite catalyst films

Wang, Pan; Tian, Xuelin; Meng, Yu; Yang, Boxuan; Hua, Zhongqiu

doi:10.1007/s10853-020-05563-w

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…In recent years, different types of NO 2 sensors have been developed based on sensing materials, fabrication technologies, input signals and conversion mechanism or sensor features (such as cost, stability or accuracy). Most studied NO 2 sensors are metal oxide semiconductor sensors [4][5][6][7], catalytic-type sensors [8], electrochemical sensors [9,10] and acoustic-based sensors [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Catalytic-type sensors detect the temperature rise caused by the oxidation of the gas, which is converted using a standard Wheatstone Bridge-type circuit into an output voltage signal proportional to the gas concentration [8]. The catalytic sensors are simple to operate, have low cost, and have proven technology with high reliability and predictability.…”

Section: Introductionmentioning

confidence: 99%

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Recent Progress on Nanomaterials for NO2 Surface Acoustic Wave Sensors

2022

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NO2 gas surface acoustic wave (SAW)sensors are under continuous development due to their high sensitivity, reliability, low cost and room temperature operation. Their integration ability with different receptor nanomaterials assures a boost in the performance of the sensors. Among the most exploited nano-materials for sensitive detection of NO2 gas molecules are carbon-based nanomaterials, metal oxide semiconductors, quantum dots, and conducting polymers. All these nanomaterials aim to create pores for NO2 gas adsorption or to enlarge the specific surface area with ultra-small nanoparticles that increase the active sites where NO2 gas molecules can diffuse. This review provides a general overview of NO2 gas SAW sensors, with a focus on the different sensors’ configurations and their fabrication technology, on the nanomaterials used as sensitive NO2 layers and on the test methods for gas detection. The synthesis methods of sensing nanomaterials, their functionalization techniques, the mechanism of interaction between NO2 molecules and the sensing nanomaterials are presented and discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Progress on Nanomaterials for NO2 Surface Acoustic Wave Sensors

2022

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“…Platinum is a noble metal with excellent catalytic properties and high chemical stability [ 42 , 43 ]. In printed technologies, platinum is promising for the manufacture of corrosion-resistant current-carrying contacts [ 44 , 45 ], elements of gas [ 46 , 47 ], temperature [ 48 , 49 ] and biological [ 50 , 51 ] sensors. In our experiments, platinum nanoparticles (PtNPs) were synthesized by spark generator during electrical erosion of platinum electrodes in an atmosphere of Ar, N 2 , and air.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nanoparticles by Spark Discharge as a Facile and Versatile Technique of Preparing Highly Conductive Pt Nano-Ink for Printed Electronics

et al. 2021

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A cost-effective, scalable and versatile method of preparing nano-ink without hazardous chemical precursors is a prerequisite for widespread adoption of printed electronics. Precursor-free synthesis by spark discharge is promising for this purpose. The synthesis of platinum nanoparticles (PtNPs) using a spark discharge under Ar, N2, and air has been investigated to prepare highly conductive nano-ink. The size, chemical composition, and mass production rate of PtNPs significantly depended on the carrier gas. Pure metallic PtNPs with sizes of 5.5 ± 1.8 and 7.1 ± 2.4 nm were formed under Ar and N2, respectively. PtNPs with sizes of 18.2 ± 9.0 nm produced using air consisted of amorphous oxide PtO and metallic Pt. The mass production rates of PtNPs were 53 ± 6, 366 ± 59, and 490 ± 36 mg/h using a spark discharge under Ar, N2, and air, respectively. It was found that the energy dissipated in the spark gap is not a significant parameter that determines the mass production rate. Stable Pt nano-ink (25 wt.%) was prepared only on the basis of PtNPs synthesized under air. Narrow (about 30 μm) and conductive Pt lines were formed by the aerosol jet printing with prepared nano-ink. The resistivity of the Pt lines sintered at 750 °C was (1.2 ± 0.1)·10−7 Ω·m, which is about 1.1 times higher than that of bulk Pt.

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Hydrogen Sensor with a Thick Catalyst Layer Anchored on Polyimide Film

Panama,

Lee,

Bae

et al. 2024

Adv Materials Technologies

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Hydrogen sensors are important in a hydrogen‐driven society to prevent explosions caused by hydrogen leaks into the atmosphere. In previous studies, resistive hydrogen sensors on polymer films have metal oxide nanostructures decorated with novel metals that enable good responses at room temperature. However, the in situ growth process of sensing nanostructures has the disadvantage of ineffective fabrication, particularly when preparing a thick catalyst layer to produce reliable readouts from the catalytic hydrogen combustion. This work presents a catalytic combustion hydrogen sensor with a thick catalyst layer anchored in a UV resin layer on polyimide film. Catalyst anchoring channels are made by UV imprinting with a glass mold. The sensor consists of a sensing electrode and a microheater, both made of Au within an area of 1.2 mm diameter. UV imprinting produces a UV resin layer of 27 µm thick and catalyst anchoring channels of 14 µm deep and 20–30 µm wide, which are filled with Pt/TiO2 as a catalyst. The sensing response is 7.9% for 1% H2 under ambient conditions, and the detection range is 0.1–3% H2. The UV‐resin microstructures can effectively retain a thick catalyst layer to enhance sensitivity, and their low thermal conductivity reduces heat loss.

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A low temperature catalytic-type combustible gas sensor based on Pt supported zeolite catalyst films

Cited by 5 publications

References 32 publications

Recent Progress on Nanomaterials for NO2 Surface Acoustic Wave Sensors

Recent Progress on Nanomaterials for NO2 Surface Acoustic Wave Sensors

Synthesis of Nanoparticles by Spark Discharge as a Facile and Versatile Technique of Preparing Highly Conductive Pt Nano-Ink for Printed Electronics

Hydrogen Sensor with a Thick Catalyst Layer Anchored on Polyimide Film

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