Growth of SnO2/W18O49 nanowire hierarchical heterostructure and their application as chemical sensor

Sen, Shashwati; Kanitkar, P L; Sharma, Ankit; Muthe, K.P.; Rath, Ashutosh; Deshpande, S. K.; Kaur, Manmeet; Aiyer, R. C.; Gupta, S. K.; Yakhmi, J. V.

doi:10.1016/j.snb.2010.04.016

Cited by 79 publications

(42 citation statements)

References 40 publications

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“…Gas sensors play an important role in environmental monitoring. In recent years, some metal oxides and complex metal oxides have been reported to be used as chlorine gas sensors [3][4][5][6][7][8][9][10][11][12], but many of those sensors work at high temperature [5][6][7][8][9][10][11][12]. For example, Wang et al [7] synthesized mesoporous SnO 2 -based sensor which was sensitive to chlorine gas at 370 ℃.…”

Section: Introductionmentioning

confidence: 99%

Room-temperature chlorine gas sensor based on CdSnO3 synthesized by hydrothermal process

Zhao

Lou

et al. 2013

J Adv Ceram

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Abstract:The perovskite-structure CdSnO 3 was obtained by calcinating CdSnO 3 ·3H 2 O precursor at 550 ℃, which was synthesized by hydrothermal process at 170 ℃ for 16 h. The phase and microstructure of the obtained CdSnO 3 powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The CdSnO 3 powders exhibit uniformly cubic structure with side length of about 100 nm. The effects of working temperature and concentration of detected gas on the gas response were studied. The selectivity of chlorine gas against other gases and response-recovery time of the sensor were also investigated. The results reveal that the CdSnO 3 gas sensor has enhanced sensing properties to 1-10 ppm chlorine gas at room temperature; the value of gas response can reach 1338.9 to 5 ppm chlorine gas. Moreover, the sensor shows good selectivity and quick response behavior (23 s) to chlorine gas, indicating its application in detecting chlorine gas at room temperature in the future.

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Section: Introductionmentioning

confidence: 99%

Room-temperature chlorine gas sensor based on CdSnO3 synthesized by hydrothermal process

Zhao

Lou

et al. 2013

J Adv Ceram

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“…Depending on processing routes and conditions a wide variety of nanostructured metal oxides have been achieved. These include single crystals [2], thin films [3], heterostructures [4], hierarchical structures [5], and one dimensional (1-D) nanostructures [6,7]. So far, 1-D nanostructures of TiO 2 , SnO 2 , ZnO, CuO, In 2 O 3 , Fe 2 O 3 , MoO 3 , WO 3 , TeO 2 , and CdO have been synthesized by adopting different fabrication routes.…”

Section: Introductionmentioning

confidence: 99%

Growth and characterization of the oxide scales and core/shell nanowires on Ti-6Al-4V particles during thermal oxidation

Arafat

Haseeb

Akbar

2015

Ceramics International

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“…However, the high temperature operation of the semiconducting metal oxide based sensor make the lifetime of the sensor shorter and thus required more electricity for operation. Other problems are their poor performance regarding the sensitivity, stability and selectivity at certain low concentration of the gas (Sen et al, 2010). For organic materials category, conducting polymers such as polyaniline, polypyrrole, polythiophene etc.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Electrospun Nanofibers of Titanium Dioxide Intercalated Polyaniline Nanocomposites for CO2 Gas Sensor

Nimkar

Agrawal

Kondawar

2015

Procedia Materials Science

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In this paper we report the synthesis and characterization of nanofibers of titanium-dioxide (TiO 2 ) intercalated polyaniline (PANI) nanocomposites at room temperature in air at relative humidity of 60% by electrospinning technique. The as-prepared nanofibers were characterized using UV-VIS, FTIR, SEM and XRD. Optical absorbance revealed the shifting of the characteristic peaks for PANI, which may be due to presence of titanium dioxide in PANI matrix. FTIR spectra show the presence of Ti-O-Ti vibrational peak and characteristic vibrational peaks of PANI indicating the interaction of TiO 2 particles with PANI. SEM micrographs revealed the formation of fibers with the diameter less than 200nm. XRD patterns showed the characteristic peaks not only for PANI but also for rutile phase of TiO 2 particles proving the existence of TiO 2 particles within the composites. The as-prepared nanofibers of TiO 2 intercalated PANI nanocomposites when exposed to CO 2 gas (1000 ppm) at room temperature; it was found that the resistance of the nanocomposites was increased from their respective unexposed values. The nanofibers of TiO 2 intercalated PANI nanocomposites were found to be good materials for CO 2 gas sensor even at room temperature as compared to that of pure TiO 2 .

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Growth of SnO2/W18O49 nanowire hierarchical heterostructure and their application as chemical sensor

Cited by 79 publications

References 40 publications

Room-temperature chlorine gas sensor based on CdSnO3 synthesized by hydrothermal process

Room-temperature chlorine gas sensor based on CdSnO3 synthesized by hydrothermal process

Growth and characterization of the oxide scales and core/shell nanowires on Ti-6Al-4V particles during thermal oxidation

Fabrication of Electrospun Nanofibers of Titanium Dioxide Intercalated Polyaniline Nanocomposites for CO2 Gas Sensor

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