Camellia-like NiO: A novel cataluminescence sensing material for H2S

Yu, Kaili; Hu, Jiaxi; Li, Xiaohong; Zhang, Lichun; Lv, Yi

doi:10.1016/j.snb.2019.02.120

Cited by 53 publications

(27 citation statements)

References 43 publications

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“…Cataluminescence (CTL), a kind of luminescence emitted from heterogeneous catalytic oxidation reactions on gas‐solid interface, is a promising technology for making gas sensors . In recent years, a series of CTL analytical applications have been attempted to develop for sulfur dioxide and other molecules at different laboratories.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La₂WO₆ Nanoparticles

et al. 2020

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In the past, the working conditions of cataluminescence (CTL) method were simply determined by single factor experiment. This paper will illustrate the optimization of working conditions of a novel sulfur dioxide gas sensor based on Au/CoO-2La 2 WO 6 nanoparticles by response surface methodology (RSM). Under optimized working conditions, analytical wavelength 522.77 nm, reaction temperature 111.15°C and carrier gas velocity 144.92 ml/min, the sensitivity of the method can be increased by 6.4 %. The optimization process is universal for many multi parameter processes. There is a good linear relationship between the CTL intensity and the concentration of sulfur dioxide in the range of 0.06-120 mg/m 3 with a detection limit (3σ) of 0.015 mg/m 3. The sensing properties of sensitive material were investigated. The results indicated that nano-Au/CoO-2La 2 WO 6 could be a good candidate for fabricating sulfur dioxide gas sensors.

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Section: Introductionmentioning

confidence: 99%

“…Our previous work has proposed that CTL baseline instability will occur in a small heat capacity system when the working temperature exceeds 200 °C . In some existing literatures, the working temperature of CTL‐based analytical methods was much higher than 200 °C. They are not suitable for making CTL gas sensors.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La₂WO₆ Nanoparticles

et al. 2020

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“…CTL, a kind of chemiluminescence (CL) emitted from heterogeneous catalytic oxidation reactions on gas-solid interface, has been considered as a promising energy transduction mechanism for fabricating gas sensors [4]. In recent years, a series of CTL sensing applications have been attempted to develop for diethyl ether [5][6][7][8][9][10][11][12][13][14] and many other molecules [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] at different laboratories. When using the composites to make diethyl ether gas sensor, high working temperature becomes a main obstacle.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of sensing material for diethyl ether: Optimization of working conditions by response surface methodology

Zhang¹,

Yang²,

Wang³

et al. 2020

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Pd doped ZnNi3Al2O7 composite was synthesized by sol-gel and impregnation method. The EDS spectrum and TEM image showed that Pd atoms are uniformly distributed on the surface of ZnNi3Al2O7 with a particle size of less than 50 nm. A sensitive diethyl ether gas sensor based on cataluminescence on the composite at lower temperature than 200℃ was reported. There is a good linear relationship between the luminescence intensity and the concentration of diethyl ether in the range of 0.1-75 mg/m3. The detection limit (3σ) is 0.06 mg/m3. The working conditions optimized by response surface methodology were analytical wavelength of 548.86 nm, reaction temperature of 109.18℃ and carrier gas velocity of 125.88 ml/min, respectively. The sensitivity of the method can be increased by 4.5% under the optimized working conditions. The optimization method is universal for many multi parameter processes.

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“…So far, diverse metal oxides, for instance TiO 2 [6,7], ZnO [8,9], WO 3 [10,11], NiO [12,13], and SnO 2 [14,15], have received a lot of attention and been widely investigated. Among them, as a prominent p-type oxide semiconductor with a wide band-gap (3.6–4.0 eV), NiO has captured a tremendous amount of attention for the capability of gases detection due to its distinctive electronic nanostructure and excellent thermal stability [16,17]. However, traditional pristine NiO-based sensors have limited gas-sensing performances such as high working temperature, low sensitivity and unsatisfactory repeatability, which may impose restrictions on the fabrication of high-performance sensors [18].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of SnO2 Nanoneedle-Anchored NiO Microsphere and its Gas Sensing Performances

et al. 2019

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In this study, we reported a successful synthesis of a nanocomposite based on SnO2 nanoneedles anchored to NiO microsphere by a simple two-step hydrothermal route. The results show that the SnO2/NiO nanocomposite-based sensor exhibits more prominent performances than the pristine NiO microsphere to NO2 such as larger responses and more outstanding repeatability. The improved properties are mainly attributed to the p–n heterojunctions formed at the SnO2–NiO interface, leading to the change of potential barrier height and the enlargement of the depletion layer. Besides, the novel and unique nanostructure provides large and effective areas for the surface reaction. In addition, a plausible growth mechanism and the enhanced sensing mechanism were proposed to further discuss the special nanostructure which will benefit the exploration of high-performance sensors.

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Camellia-like NiO: A novel cataluminescence sensing material for H2S

Cited by 53 publications

References 43 publications

Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La₂WO₆ Nanoparticles

Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La₂WO₆ Nanoparticles

Preparation and performance of sensing material for diethyl ether: Optimization of working conditions by response surface methodology

Hydrothermal Synthesis of SnO2 Nanoneedle-Anchored NiO Microsphere and its Gas Sensing Performances

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Camellia-like NiO: A novel cataluminescence sensing material for H2S

Cited by 53 publications

References 43 publications

Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La2WO6 Nanoparticles

Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La2WO6 Nanoparticles

Preparation and performance of sensing material for diethyl ether: Optimization of working conditions by response surface methodology

Hydrothermal Synthesis of SnO2 Nanoneedle-Anchored NiO Microsphere and its Gas Sensing Performances

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Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La₂WO₆ Nanoparticles

Optimization of Working Conditions by Response Surface Methodology of Sulfur Dioxide Gas Sensors Based on Au/CoO‐2La₂WO₆ Nanoparticles