Synthesis and room temperature CH4 gas sensing properties of vanadium dioxide nanorods

Li, Wenjiao; Liang, Jiran; Liu, Junfeng; Zhou, Liwei; Ran, Yang; Hu, Ming

doi:10.1016/j.matlet.2016.03.035

Cited by 32 publications

(9 citation statements)

References 16 publications

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“…Figure d,e and Table S2 compare the performance of V 2 CT x with the state-of-the-art gas sensors based on other materials tested at RT for detecting methane and hydrogen. For both hydrogen ,,,− and methane ,− analytes, the LoD of V 2 CT x gas sensor is either lower than or comparable to gas sensors fabricated with carbon-based materials, vanadium oxide, or 2D transition-metal dichalcogenides (TMDs). These results indicate that V 2 CT x is highly attractive as an RT sensing material over others (such as metal oxide hybridized TMDs and novel metal-decorated carbon-based materials).…”

Section: Resultsmentioning

confidence: 99%

Two-Dimensional Vanadium Carbide MXene for Gas Sensors with Ultrahigh Sensitivity Toward Nonpolar Gases

et al. 2019

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The sensitive detection of explosive and flammable gases is an extremely important safety consideration in today's industry. Identification of trace amounts of nonpolar analytes at ambient temperatures, however, is still a challenge because of their weak adsorption, and very few studies have been able to achieve it via a chemiresistive mechanism. Herein, we demonstrate the high performance of 2D vanadium carbide MXene (V 2 CT x ) gas sensors with ultrahigh sensitivity toward nonpolar gases. The fabricated 2D V 2 CT x sensor devices consisting of single-/few-layer 2D V 2 CT x on polyimide film were able to detect both polar and nonpolar chemical species including hydrogen and methane with a very low limit of detection of 2 and 25 ppm, respectively, at room temperature (23 °C). The performance of the fabricated V 2 CT x gas sensors in detection of nonpolar gases surpasses that of previously reported state-of-the-art gas sensors based on other 2D materials.

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Section: Resultsmentioning

confidence: 99%

Two-Dimensional Vanadium Carbide MXene for Gas Sensors with Ultrahigh Sensitivity Toward Nonpolar Gases

et al. 2019

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“…These limits represent a clear advance in methane detection in terms of sensitivity and the simplicity of the measurements when compared with reported and commercial methane sensors (Tables S5 and S6, Supporting Information). [ 6a ] Additionally, the fast response and recovery of the sensor [ 6a,c,f,19 ] are calculated to be 56 and 102 s at 800 ppm methane for poly‐ClO 4 (the response and recovery times are the time periods required to response and recovery to 90% of Δ R / R 0 ). Unfortunately, the sensors showed no response toward methane in wet air with a low relative humidity of 20–30%.…”

Section: Resultsmentioning

confidence: 99%

Methane Detection with a Tungsten‐Calix[4]arene‐Based Conducting Polymer Embedded Sensor Array

Luo

et al. 2020

Adv Funct Materials

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The detection of methane is important for industry, environment, and our daily life, but is made challenging by its small size, high volatility, and nonpolar nature. Herein, a tungsten‐capped calix[4]arene‐based p‐doped conducting polymer with hexafluorophosphate or perchlorate counter‐anions as a transducer is used to detect methane in dry air. The host–guest interaction between calixarene moieties within the polymer chain and methane molecules leads to the resistance variation of the polymer. The experimental limit of detection (LoD) of methane for the polymer‐based sensor is demonstrated to be less than 50 ppm at room temperature, and the extrapolated theoretical LoD of 2 ppm represents exceptional sensitivity to methane. Furthermore, the discrimination of methane from interfering volatile organic compounds is achieved by exploiting a sensor array using complementary chemiresistors and principal component analysis.

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“…(°C) response t res / t rec LOD ref. TiO 2 nanorods hydrothermal CH 4 60 RT 6028 — 5 ppm [ 160 ] VO 2 nanorods thermal evaporation CH 4 500 RT 35 75/158 s ∼100 ppm [ 161 ] Pt/VO x thin films magnetron sputtering CH 4 500 RT 18.2 ∼16.7/∼33 s ∼500 ppm [ 162 ] Au/VO 2 nanosheets CVD CH 4 500 RT ∼70 ∼50/∼100 s ∼100 ppm [ 163 ] Pd/SnO 2 /rGO nanoparticles hydrothermal CH 4 4000 RT 2.07 10 min/— — [ 164 ] SnO 2 …”

Section: Greenhosue Gas Sensorsmentioning

confidence: 99%

“…Thermally evaporated vanadium dioxide (VO 2 ) nanorods showed good sensing response with different concentrations (100–500 ppm) of CH 4 at room temperature. The nanorod structure provides a large surface area and sensing sites for CH 4 detection [ 161 ]. Au-decorated VO 2 nanosheets prepared by the CVD method followed by ion sputtering provide good sensing response towards 100–500 ppm of CH 4 at room temperature.…”

Section: Greenhosue Gas Sensorsmentioning

confidence: 99%

Nanostructured metal oxide semiconductor-based sensors for greenhouse gas detection: progress and challenges

Gautam¹,

Sharma²,

Tyagi³

et al. 2021

R. Soc. open sci.

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Climate change and global warming have been two massive concerns for the scientific community during the last few decades. Anthropogenic emissions of greenhouse gases (GHGs) have greatly amplified the level of greenhouse gases in the Earth's atmosphere which results in the gradual heating of the atmosphere. The precise measurement and reliable quantification of GHGs emission in the environment are of the utmost priority for the study of climate change. The detection of GHGs such as carbon dioxide, methane, nitrous oxide and ozone is the first and foremost step in finding the solution to manage and reduce the concentration of these gases in the Earth's atmosphere. The nanostructured metal oxide semiconductor (NMOS) based technologies for sensing GHGs emission have been found most reliable and accurate. Owing to their fascinating structural and morphological properties metal oxide semiconductors become an important class of materials for GHGs emission sensing technology. In this review article, the current concentration of GHGs in the Earth's environment, dominant sources of anthropogenic emissions of these gases and consequently their possible impacts on human life have been described briefly. Further, the different available technologies for GHG sensors along with their principle of operation have been largely discussed. The advantages and disadvantages of each sensor technology have also been highlighted. In particular, this article presents a comprehensive study on the development of various NMOS-based GHGs sensors and their performance analysis in order to establish a strong detection technology for the anthropogenic GHGs. In the last, the scope for improved sensitivity, selectivity and response time for these sensors, their future trends and outlook for researchers are suggested in the conclusion of this article.

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Synthesis and room temperature CH4 gas sensing properties of vanadium dioxide nanorods

Cited by 32 publications

References 16 publications

Two-Dimensional Vanadium Carbide MXene for Gas Sensors with Ultrahigh Sensitivity Toward Nonpolar Gases

Two-Dimensional Vanadium Carbide MXene for Gas Sensors with Ultrahigh Sensitivity Toward Nonpolar Gases

Methane Detection with a Tungsten‐Calix[4]arene‐Based Conducting Polymer Embedded Sensor Array

Nanostructured metal oxide semiconductor-based sensors for greenhouse gas detection: progress and challenges

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