CO2 sensing properties and mechanism of PrFeO3 and NdFeO3 thick film sensor

Chen, Yanping; Wang, Dandan; Qin, Hongwei; Zhang, Heng; Zhang, Zhongli; Zhou, Guangjun; Gao, Chengyong; Hu, Jifan

doi:10.1016/j.jre.2018.06.007

Cited by 51 publications

(25 citation statements)

References 46 publications

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“…The notable increase in public health issues and climate threats requires huge efforts in order to reduce the impact of these dangerous gases. The development chemo-resistive sensors operating at high temperatures [28,29]. In the present paper, we report a simple, sensitive, and room temperature operating chemo-resistive CO 2 sensor, based on Co-doped BaSrTiO 3 obtained by a simple and low-cost technology.…”

Section: Introductionmentioning

confidence: 94%

Nanostructured Cobalt Doped Barium Strontium Titanate Thin Films with Potential in CO2 Detection

et al. 2020

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In this work, (Ba0.75Sr0.25) (Ti0.95Co0.05) O3 perovskite nanostructured material, denoted subsequently as Co-doped BaSrTiO3, was synthesized in a one-step process in hydrothermal conditions. The obtained powder was heat-treated at 800 °C and 1000 °C, respectively, in order to study nanostructured powder behavior during thermal treatment. The Co-doped BaSrTiO3 powder was pressed into pellets of 5.08 cm (2 inches) then used for thin film deposition onto commercial Al2O3 substrates by RF sputtering method. The microstructural, thermal, and gas sensing properties were investigated. The electrical and thermodynamic characterization allowed the evaluation of thermodynamic stability and the correlation of structural features with the sensing properties revealed under real operating conditions. The sensing behavior with respect to the temperature range between 23 and 400 °C, for a fixed CO2 concentration of 3000 ppm, highlighted specific differences between Co-doped BaSrTiO3 treated at 800 °C compared to that treated at 1000 °C. The influence of the relative humidity level on the CO2 concentrations and the other potential interfering gases was also analyzed. Two possible mechanisms for CO2 interaction were then proposed. The simple and low-cost technology, together with the high sensitivity when operating at room temperature corresponding to low power consumption, suggests that Co-doped BaSrTiO3 has a good potential for use in developing portable CO2 detectors.

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Section: Introductionmentioning

confidence: 94%

Nanostructured Cobalt Doped Barium Strontium Titanate Thin Films with Potential in CO2 Detection

et al. 2020

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“…Another, more understudied ferrite perovskite, is PrFeO 3 (PFO), which has been previously reported as a material in sensing applications such as for CO 2 and nitrite detection . It has also been demonstrated to be active for the decomposition of methyl orange under visible light irradiation, displaying a band gap of 2.4 eV .…”

Section: Introductionmentioning

confidence: 99%

PrFeO₃ Photocathodes Prepared Through Spray Pyrolysis

et al. 2020

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Perovskite oxides are receiving wide interest for photocatalytic and photoelectrochemical devices, owing to their suitable band gaps for solar light absorption and stability in aqueous applications. Herein, we assess the activity of PrFeO3 photocathodes prepared by using spray pyrolysis and calcination temperatures between 500 and 700 °C. Scanning electron microscopy shows corrugated films of high surface coverage on the conductive glass substrate. The electrochemically active surface area shows slight decreases with temperature increases from 500 to 600 and 700 °C. However, transient photocurrent responses and impedance spectroscopy data showed that films calcined at higher temperatures reduced the probabilities of recombination due to trap states, resulting in faster rates of charge extraction. In this trade‐off, a calcination temperature of 600 °C provided a maximum photocurrent of ‐130±4 μA cm−2 at +0.43 VRHE under simulated sunlight, with an incident photon‐to‐current conversion efficiency of 6.6 % at +0.61 VRHE and 350 nm and an onset potential of +1.4 VRHE for cathodic photocurrent.

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“…Material ortoferit AFeO 3 dapat dimanfaatkan pada aplikasi sensor gas, fuel cell, divais spintronik, divais magneto optik, dan lainlain [3]. Pada aplikasi sensor gas, perovskite oksida merupakan salah satu material yang memiliki sensitivitas tinggi, sangat selektif terhadap gas analit, stabilitas termal yang baik, dan kontrol struktur yang stabil [4]. Senyawa nano-perovskite oxides ABO (A: La, Nd, Sm dan Gd; B: Fe, Co dan Ni; dan O: oksigen) memiliki aktivitas katalitik dan sensitivitas tinggi terhadap senyawa karbon monoksida (CO), hidrogen sulfida (H 2 S), karbon dioksida (CO 2 ) serta senyawa hidrokarbon (HCs) seperti metana, etana, dan propana [5].…”

Section: Pendahuluanunclassified

Sintesis dan Karakterisasi Material Nano-Perovskite Neodymium Iron Oxide (NdFeO3)

Mayasari

2020

metal.

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Sintesis nano-perovskite oksida neodimium besi (NdFeO 3 ) telah berhasil dilakukan dengan metode presipitasi menggunakan surfaktan EG (ethylene glycol) sebagai material pelapis. Senyawa NdFeO 3 dikarakterisasi analisis gugus fungsi kimia dengan FTIR (fourier transform infrared spectroscopy), analisis morfologi dengan SEM (scanning electron microscopy), analisis kristalinitas dan ukuran partikel dengan XRD (X-ray diffraction) dan TEM (transmission electron microscopy). Pengamatan SEM dan TEM menunjukkan bahwa hasil sintesis membentuk nanostruktur berbentuk bulat dengan ukuran diameter pada rentang 15 sampai 20 nm. Spektra XRD mengonfirmasi bahwa fasa NdFeO 3 membentuk struktur orthorombik dan perovskite.

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CO2 sensing properties and mechanism of PrFeO3 and NdFeO3 thick film sensor

Cited by 51 publications

References 46 publications

Nanostructured Cobalt Doped Barium Strontium Titanate Thin Films with Potential in CO2 Detection

Nanostructured Cobalt Doped Barium Strontium Titanate Thin Films with Potential in CO2 Detection

PrFeO₃ Photocathodes Prepared Through Spray Pyrolysis

Sintesis dan Karakterisasi Material Nano-Perovskite Neodymium Iron Oxide (NdFeO3)

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CO2 sensing properties and mechanism of PrFeO3 and NdFeO3 thick film sensor

Cited by 51 publications

References 46 publications

Nanostructured Cobalt Doped Barium Strontium Titanate Thin Films with Potential in CO2 Detection

Nanostructured Cobalt Doped Barium Strontium Titanate Thin Films with Potential in CO2 Detection

PrFeO3 Photocathodes Prepared Through Spray Pyrolysis

Sintesis dan Karakterisasi Material Nano-Perovskite Neodymium Iron Oxide (NdFeO3)

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PrFeO₃ Photocathodes Prepared Through Spray Pyrolysis