Room temperature liquefied petroleum gas (LPG) sensor

Dhawale, Dattatray S.; Dubal, Deepak P.; More, A.M.; Gujar, T.P.; Lokhande, C.D.

doi:10.1016/j.snb.2010.02.063

Cited by 91 publications

(28 citation statements)

References 28 publications

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“…It has excellent chemical and thermal stability, low cost, richly abundant, environment-friendly, non-toxic nature, strong oxidizing power, high photosensitivity, and high resistance to radiation damage. ZnO has now received increasing attention and recognized as a promising material because of its vast potential in many scientific and industrial areas as a micro-electronic and opto-electronic devices such as light emitting diodes [2], thin film transistors [3] [4], Varistors [5], solar cells [6] [7] [8], gas sensors [9] [10] [11] [12], and photocatalyst [13] [14]. And also, it has other applications, such as piezoelectric devices, spin based electronics or spintronics, luminescent materials, and transparent conductors [6] [8] [15] [16].…”

Section: Introductionmentioning

confidence: 99%

“…And also, it has other applications, such as piezoelectric devices, spin based electronics or spintronics, luminescent materials, and transparent conductors [6] [8] [15] [16]. Till now ZnO thin films have been synthesized by various techniques including sol-gel spin coating method [4], low pressure chemical vapor deposition (LPCVD) [7] [8], Chemical Both Deposition (CBD) [12], spray-pyrolysis [13] [14], thermal evaporation [17], pulsed laser deposition (PLD) [18], metal organic chemical vapor deposition (MOCVD) [19], sputtering [20], molecular beam epitaxy [21], and Hydrothermal Technique [15], etc. Spray pyrolysis is widely used because of its simplicity, commercial viability, and potential for cost-effective mass production.…”

Section: Introductionmentioning

confidence: 99%

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Optical, Structural and Morphological Properties of Photocatalytic ZnO Thin Films Deposited by Pray Pyrolysis Technique

Komaraiah¹,

Radha²,

Vijayakumar³

et al. 2016

MRC

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Photocatalytic ZnO thin films have been deposited onto glass substrate by spray pyrolysis technique. The sprayed solution consists of 0.1 M of zinc acetate dihydrate dissolved in double distilled water and sprays onto ultrasonically cleaned glass substrates maintained at 350˚C, through an air-atomizing nozzle. The X-ray diffraction (XRD), scanning electron microscopy (SEM), EDX and UV-VIS spectrophotometer were applied to describe the structural, morphological, compositional and optical properties of ZnO catalyst. XRD analysis confirms that the films were found to be single phase hexagonal wurtzite structure. The SEM micrograph of the films is shown highly uniform, crack free and found to be fiber like structures. The optical transmittance spectra of the ZnO thin films were found to be transparent to visible light and the average optical transmittance was greater than 85%. The direct optical band gap energy values of the films shift towards the lower energy as a consequence of the thermal annealing. The Urbach energy of the films was found to increase with annealing temperature. The refractive index of the films was calculated and the refractive index dispersion curve of the films obeys the single oscillator model. The values of oscillatory energy E o , dispersion energy E d , and static dielectric constant ε s for the ZnO thin films were determined. The films were evaluated for their ability to degrade methylene blue. The Langmuir-Hinshelwood kinetic model was used to interpret quantitatively the observed kinetic experimental result. The photocatalytic activity of ZnO thin films was enhanced by annealing temperature.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical, Structural and Morphological Properties of Photocatalytic ZnO Thin Films Deposited by Pray Pyrolysis Technique

Komaraiah¹,

Radha²,

Vijayakumar³

et al. 2016

MRC

View full text Add to dashboard Cite

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“…These materials have a good combination of the different properties of the individual components and have potential applications in A. Olad (&) Á R. Nosrati Polymer Composite Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran e-mail: a.olad@yahoo.com a variety of fields, for example microelectronics, display technology, catalysis and photocatalysis, sensors, and batteries and solar cells [2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and photocatalytic activity of polyaniline/ZnO nanocomposite

Olad

Nosrati

2011

Res Chem Intermed

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Polyaniline (PANI)/zinc oxide (ZnO) nanocomposite was synthesized by in-situ polymerization. X-ray diffraction patterns, UV-visible spectroscopy, SEM, and TEM were used to characterize the composition and structure of the nanocomposite. Nanostructured PANI/ZnO composite was used as photocatalyst in the photodegradation of methylene blue dye molecules in aqueous solution. The photocatalytic activity of PANI/ZnO nanocomposite under UV and visible light irradiation was evaluated and was compared with that of ZnO nanoparticles. ZnO/ PANI core-shell nanocomposite had greater photocatalytic activity than ZnO nanoparticles and pristine PANI under visible light irradiation. According to these results, application of PANI as a shell on the surface of ZnO nanoparticles causes the enhanced photocatalytic activity of the PANI/ZnO nanocomposite. Also UVvisible spectroscopy studies showed that the absorption peak for PANI/ZnO nanocomposite has a red shift toward visible wavelengths compared with the ZnO nanoparticles and pristine PANI. The effect of different operating conditions on the photocatalytic performance of PANI/ZnO nanocomposite in the photodegradation of methylene blue dye molecules was investigated in a bath experimental setup.

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“…[4]. The gas sensing performance of chemiresistor was checked in air as reference gas and sensing response defined as reported in [5]. The measurements of each gas-sensing parameter were carried out 5 times to check reproducibility of gas sensing results.…”

Section: Methodsmentioning

confidence: 99%

Novel synthesis approach for stable sodium superoxide (NaO2) nanoparticles for LPG sensing application

Nemade¹

2017

Int Nano Lett

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The synthesis of stable superoxide is still great challenge for the researchers working in the field of materials science. Through this letter, we report the novel and simple synthesis approach for the preparation of stable sodium superoxide (NaO 2 ) nanoparticles. NaO 2 nanoparticles were prepared by a spray pyrolysis technique, under oxygen rich environment for gas sensing application. The texture characterizations show that asobtained NaO 2 nanoparticles have high structural purity. Most importantly, NaO 2 nanoparticles exhibits higher sensing response, shorter response time and recovery time, low operating temperature and good stability during sensing of liquefied petroleum gas (LPG). The main accomplishment of present work is that as-fabricated sensor has low operating temperature (423 K), which is below autoignition temperature of LPG. The gas sensing mechanism of NaO 2 nanoparticles was discussed without the conventional oxygen bridging mechanism. Through this short communication, LPG sensing application of stable sodium superoxide nanoparticle is explored.

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Room temperature liquefied petroleum gas (LPG) sensor

Cited by 91 publications

References 28 publications

Optical, Structural and Morphological Properties of Photocatalytic ZnO Thin Films Deposited by Pray Pyrolysis Technique

Optical, Structural and Morphological Properties of Photocatalytic ZnO Thin Films Deposited by Pray Pyrolysis Technique

Preparation, characterization, and photocatalytic activity of polyaniline/ZnO nanocomposite

Novel synthesis approach for stable sodium superoxide (NaO2) nanoparticles for LPG sensing application

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