LPG sensing characteristics of electrospray deposited SnO2 nanoparticles

Gürbüz, Mevlüt; Günkaya, Göktuğ; Doğan, Aydın

doi:10.1016/j.apsusc.2014.09.185

Cited by 22 publications

(10 citation statements)

References 25 publications

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“…Recent reports show that this difficulty can be largely alleviated by using composites, hetero-metal oxide doping, or oxide heterostructures [5,6]. Among those metal oxides, ZnO and In 2 O 3 , as two important n-type semiconductors (E g = 3.37 eV and 3.5~3.75 eV at 300 K, respectively), play important roles in the field of gas sensors [7][8][9][10][11]. It has been demonstrated that the ZnO/In 2 O 3 composite nanostructures (such as binary complex, core-shell heterostructures, and mixtures) can greatly enhance their application performances [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Doping effect of In2O3 on structural and ethanol-sensing characteristics of ZnO nanotubes fabricated by electrospinning

Huang

Zhao

Zhang

et al. 2015

Applied Surface Science

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Indium-doped ZnO (IZO) nanotubes with various indium contents (0.01-0.20) were synthesized via a facile electrospinning method. Results of X-ray diffraction and transmission electron microscopy demonstrate that all samples are consisted of hexagonal wurtzite-typed ZnO, showing a well-crystallized indium-zinc-oxide solid solution when only a small amount of zinc ions substituted by indium ions (0.01). Once the amount of indium dopants ≥ 0.05, there will form some amorphous In 2 O 3 , leading to a pronounced decrease in grain sizes. Gas-sensing performances revealed that the IZO nanotube-based sensors have enhanced ethanol-sensing characteristics, especially, sensor based on IZO-0.01 nanotubes shows the highest response (R a /R g = 81.7), which is twice that of the undoped ZnO nanotubes (40.0) toward 100 ppm ethanol at an operating temperature of 275 °C. And IZO-0.20 nanotube-based sensor presents a relatively high response at high ethanol concentrations. Our research suggested that these remarkable enhanced ethanol-sensing properties can be closely related to the formation of indium-zinc-oxide solid solutions and/or heterostructures between ZnO and amorphous In 2 O 3 .

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Section: Introductionmentioning

confidence: 99%

Doping effect of In2O3 on structural and ethanol-sensing characteristics of ZnO nanotubes fabricated by electrospinning

Huang

Zhao

Zhang

et al. 2015

Applied Surface Science

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“…In our previous studies we have reported that the sensitivity of electrospray deposited (ESD) sensors was between 1.1 and 2.51 for 20 LEL LPG concentration [2]. The sensitivity of sensors produced by EPD at same LPG concentration was between 12 and 30.…”

Section: Gas Sensing Analyses Of the Deposited Sno 2 Filmsmentioning

confidence: 99%

“…The leakage of the LPG, NO 2 , SO 2 , CO, H 2 , and H 2 S has a detrimental effect on human health and the environment during production, storage, transportation, and usage stages, due to their toxic and irritating nature [1][2][3]. Some semiconductor oxides such as TiO 2 , ZnO, WO 3 , and SnO 2 are the most widely used to detect toxic and explosive gases [4].…”

Section: Introductionmentioning

confidence: 99%

Electrophoretic Deposition of SnO₂Nanoparticles and Its LPG Sensing Characteristics

2015

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HomogenizedSnO2nanoparticles (60 nm) in acetylacetone mediums, both with and without iodine, were deposited onto platinum coated alumina substrate and interdigital electrodes using the electrophoretic deposition (EPD) method for gas sensor applications. Homogeneous and porous film layers were processed and analyzed at various coating times and voltages. The structure of the deposited films was characterized by a scanning electron microscopy (SEM). The gas sensing properties of theSnO2films were investigated using liquid petroleum gas (LPG) for various lower explosive limits (LEL). The results showed that porous, crack-free, and homogeneousSnO2films were achieved for 5 and 15 sec at 100 and 150 V EPD parameters using an iodine-free acetylacetone basedSnO2suspension. The optimum sintering for the depositedSnO2nanoparticles was observed at 500°C for 5 min. The results showed that the sensitivity of the films was increased with the operating temperature. The coated films with EPD demonstrated a better sensitivity for the 20 LEL LPG concentrations at a 450°C operating temperature. The maximum sensitivity of theSnO2sensors at 450°C to 20 LEL LPG was 30.

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“…2,3 Therefore, the development of highly sensitive metal oxide semiconductor gas sensors using low price sensor fabrication techniques such as electrospray deposition (ESD) is essential for future sensor applications. 1,4 Also, the ESD technique is simple, easily controllable, low temperature process, rapid, cost effective and suitable for large-scale sensor production. 5,6 According to our approach, ESD provides more islands of particle agglomerates on a sensor substrate using a precursor solution when compared to other methods.…”

Section: Introductionmentioning

confidence: 99%

“…Fabrication of gas sensors is essential in order to detect gas leakage. 4,7,8 Nano structured TiO 2 , ZnO, WO 3 and SnO 2 semiconducting oxides are widely used to fabricate gas sensors. 9 Among them, ZnO and SnO 2 are n-type semiconductor, which has been extensively used in transparent electrode materials, catalyst supports, solar cells, heat mirrors, high-capacity lithium-storage, varistors and gas sensors due to its good quality optical and electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Electrospray deposition of SnO₂ films from precursor solution

Gürbüz

Günkaya

Doğan

2016

Surface Engineering

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The electrospray deposition (ESD) of SnO 2 films from SnCl 4 .5H 2 O precursor solution was performed for gas sensor applications. Deposition time, solution flow rate and solution concentration were the main control parameters in the ESD process. The morphological properties of the deposited films were characterised by scanning electron microscopy. X-ray diffraction and energy dispersive X-ray analyses were employed to confirm the crystal phases and composition of the films. The best coatings with an island of particle agglomerates were observed at a flow rate of 0.12 ml min −1 , for 60 min, and at a 0.05M concentration. The crystallisation of SnO 2 films was observed at 650°C. The grain size and surface morphology of the films were influenced by the sol concentrations. Larger grain size and cracked surface were observed by increasing the sol concentration. The film thickness of 6 µm and a grain size of less than 100 nm were achieved.

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LPG sensing characteristics of electrospray deposited SnO2 nanoparticles

Cited by 22 publications

References 25 publications

Doping effect of In2O3 on structural and ethanol-sensing characteristics of ZnO nanotubes fabricated by electrospinning

Doping effect of In2O3 on structural and ethanol-sensing characteristics of ZnO nanotubes fabricated by electrospinning

Electrophoretic Deposition of SnO₂Nanoparticles and Its LPG Sensing Characteristics

Electrospray deposition of SnO₂ films from precursor solution

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LPG sensing characteristics of electrospray deposited SnO2 nanoparticles

Cited by 22 publications

References 25 publications

Doping effect of In2O3 on structural and ethanol-sensing characteristics of ZnO nanotubes fabricated by electrospinning

Doping effect of In2O3 on structural and ethanol-sensing characteristics of ZnO nanotubes fabricated by electrospinning

Electrophoretic Deposition of SnO2Nanoparticles and Its LPG Sensing Characteristics

Electrospray deposition of SnO2 films from precursor solution

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Electrophoretic Deposition of SnO₂Nanoparticles and Its LPG Sensing Characteristics

Electrospray deposition of SnO₂ films from precursor solution