Morphology evolution of ZnO thin films from aqueous solutions and their application to liquefied petroleum gas (LPG) sensor

Gurav, K.V.; Patil, Umakant M.; Shin, Seung Wook; Pawar, S.M.; Kim, J.H.; Lokhande, C.D.

doi:10.1016/j.jallcom.2012.01.082

Cited by 53 publications

(12 citation statements)

References 36 publications

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“…[1][2][3][4][5] Most of the LPG sensors reported in the open literature basically work at very high operating temperatures, such as 250 C or above, which is not facile for commercialization of the sensor. 1,[3][4][5][6][7][8] Therefore, nowadays, the sensor community is focusing on the development of a potential LPG sensor operable at room temperature and that produces a quick response, i.e., small response and recovery times towards the incoming LPG, along with high sensitivity, reproducibility and stability. [9][10][11][12][13] The sensing mechanism of such LPG sensor is a surface-controlled phenomenon; therefore, nanostructures play a signicant role for the design of sensing devices.…”

Section: Introductionmentioning

confidence: 99%

A stable and highly sensitive room-temperature liquefied petroleum gas sensor based on nano-cubes/cuboids of zinc antimonate

Singh¹,

Singh

et al. 2020

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

A stable and highly sensitive room-temperature liquefied petroleum gas sensor based on nano-cubes/cuboids of zinc antimonate

Singh¹,

Singh

et al. 2020

RSC Adv.

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“…The selectivity and sensitivity of semiconductor-based gas sensor is greatly related with the oxide grain size, assuming the grain boundaries acting as scattering centers for the electrons [ 36 , 61 ] as well as the materials surface functionality and temperature. Recognized as an effective material for gas detection at temperatures above 150 °C [ 62 , 63 , 64 , 65 , 66 ], ZnO semiconductor are able to interact with the target gas through several events since the thermic energy coming from heating could reduce the potential barrier, thus enabling the electron flow and so the gas detection [ 67 ]. Therefore, the excellent sensitivity and good selectivity of ZnO50/PSS50 at room temperature can be attributed to the high surface area and grain boundary interconnections observed for ZnO nanofibers and presented in Figure 3 a.…”

Section: Resultsmentioning

confidence: 99%

Sensitive and Selective NH3 Monitoring at Room Temperature Using ZnO Ceramic Nanofibers Decorated with Poly(styrene sulfonate)

André

Kwak

Dong

et al. 2018

Sensors

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Ammonia (NH3) gas is a prominent air pollutant that is frequently found in industrial and livestock production environments. Due to the importance in controlling pollution and protecting public health, the development of new platforms for sensing NH3 at room temperature has attracted great attention. In this study, a sensitive NH3 gas device with enhanced selectivity is developed based on zinc oxide nanofibers (ZnO NFs) decorated with poly(styrene sulfonate) (PSS) and operated at room temperature. ZnO NFs were prepared by electrospinning followed by calcination at 500 °C for 3 h. The electrospun ZnO NFs are characterized to evaluate the properties of the as-prepared sensing materials. The loading of PSS to prepare ZnO NFs/PSS composite is also optimized based on the best sensing performance. Under the optimal composition, ZnO NFs/PSS displays rapid, reversible, and sensitive response upon NH3 exposure at room temperature. The device shows a dynamic linear range up to 100 ppm and a limit of detection of 3.22 ppm and enhanced selectivity toward NH3 in synthetic air, against NO2 and CO, compared to pure ZnO NFs. Additionally, a sensing mechanism is proposed to illustrate the sensing performance using ZnO NFs/PSS composite. Therefore, this study provides a simple methodology to design a sensitive platform for NH3 monitoring at room temperature.

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“…Defined vertically aligned nanorods have average diameter 150 nm and length of several hundred nanometers. Such vertically aligned ZnO nanorods useful for photo catalysis application process [23] [24].…”

Section: Resultsmentioning

confidence: 99%

Hydrothermally Synthesis Nanostructure ZnO Thin Film for Photocatalysis Application

Shinde¹,

Nam²,

Patil³

et al. 2016

KEPCO Journal on Electric Power and Energy

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ZnO has nanostructured material because of unique properties suitable for various applications. Amongst all chemical and physics methods of synthesis of ZnO nanostructure, the hydrothermal method is attractive for its simplicity and environment friendly condition. Nanostructure ZnO thin films have been successfully synthesized on fluorine doped tin oxide (FTO) substrate using hydrothermal method. A possible growth mechanism of the various nanostructures ZnO is discussed in schematics. The prepared materials were characterized by standard analytical techniques, i.e., X-ray diffraction (XRD) and Field-emission scanning electron microscopy (SEM). The XRD study showed that the obtained ZnO nanostructure thin films are in crystalline nature with hexagonal wurtzite phase. The SEM image shows substrate surface covered with nanostructure ZnO nanrod. The UV-vis absorption spectrum of the synthesized nanostructure ZnO shows a strong excitonic absorption band at 365 nm which indicate formation nanostructure ZnO thin film. Photoluminescence spectra illustrated two emission peaks, with the first one at 424 nm due to the band edge emission of ZnO and the second broad peak centered around 500 nm possibly due to oxygen vacancies in nanostructure ZnO. The Raman measurements peaks observed at 325 cm -1 , 418 cm -1 , 518 cm -1 and 584 cm -1 indicated that nanostrusture ZnO thin film is high crystalline quality. We trust that nanostructure ZnO material can be effectively will be used as a highly active and stable phtocatalysis application.

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Morphology evolution of ZnO thin films from aqueous solutions and their application to liquefied petroleum gas (LPG) sensor

Cited by 53 publications

References 36 publications

A stable and highly sensitive room-temperature liquefied petroleum gas sensor based on nano-cubes/cuboids of zinc antimonate

A stable and highly sensitive room-temperature liquefied petroleum gas sensor based on nano-cubes/cuboids of zinc antimonate

Sensitive and Selective NH3 Monitoring at Room Temperature Using ZnO Ceramic Nanofibers Decorated with Poly(styrene sulfonate)

Hydrothermally Synthesis Nanostructure ZnO Thin Film for Photocatalysis Application

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