Methanol sensing micro-gas sensors of SnO2–ZnO nanofibers on Si/SiO2/Ti/Pt substrate via stepwise-heating electrospinning

Tang, Wenxian; Wang, Jing

doi:10.1007/s10853-015-8972-6

Cited by 41 publications

(13 citation statements)

References 54 publications

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“…Tang et al . reported SnO 2 -ZnO 2 nanofiber via step wise-heating electro spinning method present the response to 10 ppm methanol about 7 at operating temperature 250 °C 23 . Vijay et al .…”

Section: Introductionmentioning

confidence: 97%

“…Vijay et al . reported that the response to 10 ppm methanol of mesoporous Ag-doped TiO 2 /SnO 2 nano-composite prepared with hydrothermal method is about 15 at operating temperature of 275 °C 23 . Liu et al .…”

Section: Introductionmentioning

confidence: 99%

“…In summary, ALMFs all compose with small particles and those particles are different in size, shape, dispersion and crystallinity, which may lead different surface area and response, selectivity and operating temperature. Different templates allow the fibers to have different exposed facets 20,23 , different adjacent lattice results in different properties. The crystal lattice fringes of ALMFs are obvious, but it can be seen that the crystallinity of ALMF-2 is better than that of ALMF-1 and ALMF-3.

Figure 4TEM image of as-prepared ALMFs, ( a ) ALMF-1, ( b ) and ( c ) ALMF-2, ( d ) and ( e ) ALMF-3, ( f ), ( g ) and ( h ) high resolution crystal lattice of ALMF-1, ALMF-2 and ALMF-3. …”

Section: Introductionmentioning

confidence: 99%

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A high selective methanol gas sensor based on molecular imprinted Ag-LaFeO3 fibers

Qiu

Wang

Zhu

et al. 2017

Sci Rep

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Ag-LaFeO3 molecularly imprinted polymers (ALMIPs) were fabricated, which provided special recognition sites to methanol. Then ALMIPs fiber 1, fiber 2 and fiber 3 were prepared using filter paper, silk and carbon fibers template, respectively. Based on the observation of X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and Nitrogen adsorption surface area analyzer (BET), the structure, morphology and surface area of the fibers were characterized. The ALMIPs fibers (fiber 1, fiber 2 and fiber 3) show excellent selectivity and good response to methanol. The responses to 5 ppm methanol and the optimal operating temperature of ALMIPs fibers are 23.5 and 175 °C (fiber 1), 19.67 and 125 °C (fiber 2), 17.59 and 125 °C (fiber 3), and a lower response (≤10, 3, 2) to other test gases including formaldehyde, acetone, ethanol, ammonia, gasoline and benzene was measured, respectively.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Figure 4TEM image of as-prepared ALMFs, ( a ) ALMF-1, ( b ) and ( c ) ALMF-2, ( d ) and ( e ) ALMF-3, ( f ), ( g ) and ( h ) high resolution crystal lattice of ALMF-1, ALMF-2 and ALMF-3. …”

Section: Introductionmentioning

confidence: 99%

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A high selective methanol gas sensor based on molecular imprinted Ag-LaFeO3 fibers

Qiu

Wang

Zhu

et al. 2017

Sci Rep

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“…The literature therefore shows many examples of microsensors onto which sensitive layers have been deposited by using various methods, such as for example micropipetting [10,11,12,13], sputtering [14,15,16,17,18,19,20,21], precipitation–oxidation [22,23], stepwise-heating electrospinning [24], flame spray pyrolysis [25], spin coating [26], carbo-thermal route [27], evaporation [28], metal-assisted chemical etching [29], or organic binder printing [30]. Radio-frequency sputtering is a method compatible with the industrial fabrication of miniaturized sensors by microelectronics and MEMS (microelectromechanical systems) technologies.…”

Section: Introductionmentioning

confidence: 99%

Integration of P-CuO Thin Sputtered Layers onto Microsensor Platforms for Gas Sensing

Presmanes

Thimont

Younsi

et al. 2017

Sensors

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P-type semiconducting copper oxide (CuO) thin films deposited by radio-frequency (RF) sputtering were integrated onto microsensors using classical photolithography technologies. The integration of the 50-nm-thick layer could be successfully carried out using the lift-off process. The microsensors were tested with variable thermal sequences under carbon monoxide (CO), ammonia (NH3), acetaldehyde (C2H4O), and nitrogen dioxide (NO2) which are among the main pollutant gases measured by metal-oxide (MOS) gas sensors for air quality control systems in automotive cabins. Because the microheaters were designed on a membrane, it was then possible to generate very rapid temperature variations (from room temperature to 550 °C in only 50 ms) and a rapid temperature cycling mode could be applied. This measurement mode allowed a significant improvement of the sensor response under 2 and 5 ppm of acetaldehyde.

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“…However, accompanied with some other issues, the relatively poor detection limit and low response/recovery speeds limit the applications of gas sensor-based systems. In order to address these issues, many efforts including developing sensitive gas-sensing materials and optimizing sensor structures have been contributed to this field [7][8][9][10]. For example, nanostructured sensing materials, such as nanotubes, nanowires, and nanoparticles, have been prepared, which were found to have much enhanced sensing performance [11,12].…”

Section: Introductionmentioning

confidence: 99%

Snowflake-Shaped ZnO Nanostructures-Based Gas Sensor for Sensitive Detection of Volatile Organic Compounds

Han

Li²,

Zhang

et al. 2017

Advances in Condensed Matter Physics

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Volatile organic compounds (VOCs) have been considered severe risks to human health. Gas sensors for the sensitive detection of VOCs are highly required. However, the preparation of gas-sensing materials with a high gas diffusion performance remains a great challenge. Here, through a simple hydrothermal method accompanied with a subsequent thermal treatment, a special porous snowflake-shaped ZnO nanostructure was presented for sensitive detection of VOCs including diethyl ether, methylbenzene, and ethanol. The fabricated gas sensors exhibit a good sensing performance including high responses to VOCs and a short response/recovery time. The responses of the ZnO-based gas sensor to 100 ppm ethanol, methylbenzene, and diethyl ether are about 27, 21, and 11, respectively, while the response times to diethyl ether and methylbenzene are less than 10 seconds. The gas adsorption-desorption kinetics is also investigated, which shows that the gas-sensing behaviors to different target gases are remarkably different, making it possible for target recognition in practical applications.

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Methanol sensing micro-gas sensors of SnO2–ZnO nanofibers on Si/SiO2/Ti/Pt substrate via stepwise-heating electrospinning

Cited by 41 publications

References 54 publications

A high selective methanol gas sensor based on molecular imprinted Ag-LaFeO3 fibers

A high selective methanol gas sensor based on molecular imprinted Ag-LaFeO3 fibers

Integration of P-CuO Thin Sputtered Layers onto Microsensor Platforms for Gas Sensing

Snowflake-Shaped ZnO Nanostructures-Based Gas Sensor for Sensitive Detection of Volatile Organic Compounds

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