Effect of film thickness on the electrical and ethanol sensing characteristics of LaFeO3 nanoparticle-based thick film sensors

Cao, Ensi; Chu, Zhiwen; Wang, Huihui; Hao, Wentao; Sun, Li; Zhang, Yongjia

doi:10.1016/j.ceramint.2018.01.163

Cited by 32 publications

(12 citation statements)

References 37 publications

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“…Table lists the gas responses of LFO-based sensors to ethanol at T P reported so far. As far as pure LFO is concerned, the sensing materials fabricated by sol–gel method ,− produced better sensing performance, including lower T P and higher gas response, than those by other methods, such as electrospinning and hydrothermal. − Therefore, the sol–gel method is frequently adopted to fabricate LFO nanoparticles for the purpose of gas sensing, among which the pure LFO sensor in the current work yielded the highest gas response of 102.1–100 ppm of ethanol. Although pure and various doped LFO powders have been prepared by the same citric sol–gel method, the heat treatment of the final powders was different.…”

Section: Resultsmentioning

confidence: 84%

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Cao

Wang

et al. 2019

ACS Appl. Nano Mater.

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Au and Cl comodified LaFeO3 nanoparticles were prepared by a citric sol–gel method through the addition of HAuCl4 into precursor. As evidenced by XRD and TEM, the addition of HAuCl4 suppressed the growth of LaFeO3 crystallite but hardly influenced the average particle size. XPS indicated that chlorine existed in the forms of organics and chlorides, while Au existed in the form of Au0. The simultaneous existence of Au and Cl on the surface suppressed the adventitious carbon contamination, whereas it favored the formation of La carbonate and the adsorption of oxygen species which were both beneficial for the improvement of gas sensing performance. At the prime working temperature of 120 °C, the Au and Cl comodified LaFeO3 sensor with the addition of 1 wt % HAuCl4 exhibited the highest gas response (220.7) reported so far to 100 ppm ethanol. Ab initio calculations on the Fe–O terminated LaFeO3 (001) surface preadsorbed by O atom demonstrated that more charge transferred from the ethanol to the surface additionally adsorbed by Au and Cl, resulting in higher gas response as observed.

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Section: Resultsmentioning

confidence: 84%

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Cao

Wang

et al. 2019

ACS Appl. Nano Mater.

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“…It is obtained by the co-doping which play an important role in the gas sensor performance The responses occur by explaining the sensing mechanism. The mechanism of MOS sensor were explained by chemical reaction as shown in Equation ( 3) and (4) below [22]:…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the development of MOS gas sensor to detect the ethanol gases were necessary. One of the materials that were widely used as ethanol gas sensors is LaFeO3 [21][22][23][24]. It due to a good response from LaFeO3 in the field of gas sensors [25].…”

Section: Introductionmentioning

confidence: 99%

The enhancement of ethanol gas sensors response based on calcium and zinc co-doped LaFeO3/Fe2O3 thick film ceramics utilizing yarosite minerals extraction as Fe2O3 precursor

et al. 2021

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A gas sensor is a renewed interest of research which has been developed to make a device that can be detected the harmful gases and applied in the several fields of industries. In this paper, we report the modified of gas sensor based thick film ceramic LaFeO3/Fe2O3 by added calcium and zinc co-doping prepared by screen-printed technique. In this work, yarosite mineral was utilized as Fe2O3 precursor. It aims to take the advantages of abundance natural resources in Indonesia to save a cost in gas sensor fabrication. Then, x-ray diffraction (XRD), scanning electron microscopy (SEM) and electrical properties characterization were applied to the calcium and zinc co-doped LaFeO3/Fe2O3-based thick film ceramics. It is obtained that the crystal structures were cubic with crystallite size at about 51.19 nm and 48.17 nm. SEM images informed that calcium and zinc co-doped caused the larger pores of LaFeO3/Fe2O3. It indicates that the gas sensors shows a response to the ethanol gases. Lastly, calcium and zinc co-doped can be a potential candidate to enhance the highly performance of gas sensors. Moreover, yarosite mineral also can be used to develop the future perspectives of ethanol gas sensors.

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“…In the literature, different metal combinations have been developed for the preparation of perovskite structures for specific applications [18][19][20][21][22][23][24][25][26][27]. Additionally, perovskites have been successfully employed in various technological applications, such as catalysts [18][19][20], photocatalysts [28,29], water splitting [30][31][32], supercapacitor [33][34][35], chemical reductions/removal [36][37][38], solar cells [39][40][41], gas sensing [42][43][44], and chemical sensing device development [45][46][47][48][49][50]. Karuppiah et al fabricated graphene nanosheet-wrapped mesoporous LaCeFeMnO 3 perovskite for lithium battery applications [51].…”

Section: Introductionmentioning

confidence: 99%

Perovskite Nanoparticles as an Electrochemical Sensing Platform for Detection of Warfarin

Ansari

Alam

2022

Biosensors

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Chemically prepared PrAlO3 perovskite nanoparticles (NPs) were applied for the electrochemical detection of warfarin, which is commonly utilized for preventing blood clots, such as in deep vein thrombosis. PrAlO3 perovskite NPs were synthesized by the co-precipitation process at environmental conditions. Crystallographic structure, phase purity, morphological structure, thermal stability, optical properties, and electrochemical characteristics were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, UV-visible analysis, and cyclic voltammetry techniques. TEM micrographs showed the highly crystalline structure, smooth surface, irregular shape, and size of nanocrystalline particles with an average size of 20–30 nm. Particularly crystalline perovskite NPs were pasted on glassy carbon electrodes (GCE) to electrochemically detect the warfarin contents in liquid samples. The fabricated electrode was electrochemically characterized by different parameters such as different potential, scan rates, same potential with seven consecutive cycles, time response, real-time sample analysis, and as a function of warfarin concentration in phosphate buffer solution (0.1 M PBS, pH 7.2). The electrochemical electrode was further verified with various potentials of 5, 10, 20, 50, 100, and 150 mV/s, which exhibited sequential enhancements in the potential range. For detecting warfarin over a wide concentration range (19.5 µM–5000 µM), the detection devices offered good sensitivity and a low limit of detection (19.5 µM). The time-dependent influence was examined using chronoamperometry (perovskite NPs/GCE) in the absence and presence of warfarin at four distinct voltages of +0.05 to +1.2 V from 0 to 1000 s. The repeatability and reliability of the constructed electrochemical sensing electrode were also evaluated in terms of cyclic response for 30 days, demonstrating that it is substantially more reliable for a longer period. The fabricated perovskite NPs/GCE electrodes could be employed for the rapid identification of other drugs.

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Effect of film thickness on the electrical and ethanol sensing characteristics of LaFeO3 nanoparticle-based thick film sensors

Cited by 32 publications

References 37 publications

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

The enhancement of ethanol gas sensors response based on calcium and zinc co-doped LaFeO3/Fe2O3 thick film ceramics utilizing yarosite minerals extraction as Fe2O3 precursor

Perovskite Nanoparticles as an Electrochemical Sensing Platform for Detection of Warfarin

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Effect of film thickness on the electrical and ethanol sensing characteristics of LaFeO3 nanoparticle-based thick film sensors

Cited by 32 publications

References 37 publications

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO3 Nanoparticles

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO3 Nanoparticles

The enhancement of ethanol gas sensors response based on calcium and zinc co-doped LaFeO3/Fe2O3 thick film ceramics utilizing yarosite minerals extraction as Fe2O3 precursor

Perovskite Nanoparticles as an Electrochemical Sensing Platform for Detection of Warfarin

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Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles

Enhanced Ethanol Sensing Performance of Au and Cl Comodified LaFeO₃ Nanoparticles