Highly selective ozone gas sensor based on nanocrystalline Zn0.95Co0.05O thin film obtained via spray pyrolysis technique

Onofre, Y.J.; Catto, Ariadne C.; Bernardini, Sandrine; Fiorido, Tomas; Aguir, Khalifa; Longo, Elson; Mastelaro, Valmor Roberto; Silva, Luís F. da; Godoy, Marcio Peron Franco de

doi:10.1016/j.apsusc.2019.01.197

Cited by 57 publications

(29 citation statements)

References 47 publications

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“…The 187 ppb corresponds to the ozone level that the sensor can measure with certainty, with 54% sensitivity. The position of our sensing element among the other reported semiconducting materials for ozone sensing 30,[64][65][66][67][68][69][70][71][72][73] is illustrated in Fig. 3.…”

Section: Sensing Properties Of the Metal Halide Nanocubesmentioning

confidence: 99%

Ligand-free all-inorganic metal halide nanocubes for fast, ultra-sensitive and self-powered ozone sensors

et al. 2019

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Section: Sensing Properties Of the Metal Halide Nanocubesmentioning

confidence: 99%

Ligand-free all-inorganic metal halide nanocubes for fast, ultra-sensitive and self-powered ozone sensors

et al. 2019

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“…The Zn 0.95 Co 0.05 O thin film prepared by the spray pyrolysis technique revealed good sensitivity, repeatability and total reversibility towards O 3 gas of concentrations, 20–1040 ppb [ 287 ]. The SEM cross-sectional view and surface morphology of Zn 0.95 Co 0.05 O thin film are shown in figure 10 a , b , respectively.…”

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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“…Compared with the XRD patterns of γ-Al 2 O 3 and five catalysts at different calcination temperatures, no obvious characteristic peaks of cobalt oxide were observed. However, Co 2 O 3 crystals were present on the catalyst surface during XRF characterization because Co 2 O 3 was incorporated into the lattice structure of TiO 2 , uniformly dispersed in the crystal lattice of TiO 2 , and solid solution occurred, thereby increasing the reactivity of the Ti-O structure and the active component of the catalyst (Onofre et al, 2019). During the heterogeneous ozone-catalyzed reaction, the concentrations of cobalt, aluminum, and titanium catalyst of Ti-Co@Al 2 O 3 released into the solution were small.…”

Section: Research Articlementioning

confidence: 99%

Ozone catalytic oxidation capacity of Ti‐Co@Al₂O₃ for the treatment of biochemical tailwater from the coal chemical industry

Sun

Zhou

Sun

et al. 2020

Water Environment Research

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A Ti‐Co@γ‐Al2O3 composite catalyst was prepared using impregnation and sol‐gel methods to degrade biochemical tailwater from the coal chemical industry, and its preparation conditions (active component doping ratio, load times, and calcination temperature) were optimized through single‐factor experiments. The surface properties of the Ti‐Co@γ‐Al2O3 composite catalyst and the crystal structure characteristics of the catalytically active components were characterized via scanning electron microscopy–energy dispersive spectrometry, X‐ray diffraction, and X‐ray fluorescence. The effects of reaction time, initial pH, ozone aeration, and catalyst dosage on degradation performance were investigated through an experiment on the catalytic ozonation degradation of biochemical tail water. Results showed that the optimal conditions were as follows: reaction time of 30 min, pH of 8.2, ozone aeration of 30 mg/min, and catalyst dosage of 20 g/L. The total phenol and total organic carbon removal rates for biochemical tailwater were 66.1% and 57.6%, respectively, in the catalytic system. The mechanism of degradation of organic pollutants by catalytic ozonation was investigated by adding tert‐butanol to the catalytic ozone oxidation system. The degradation of chemical oxygen demand in biochemical tailwater was caused primarily by the synergy between the Ti‐Co@γ‐Al2O3 catalyst and ozone. Practitioner points Ti‐Co/γ‐Al2O3 catalyst was prepared for the catalytic oxidation of biochemical tail water. The optimal removal rates of total phenol and TOC were 67.7% and 58.8%, respectively. The organic matter was degraded rapidly and efficiently after 5 min of ozone catalytic oxidation reaction. It provides theoretical guidance for the practical application of ozone catalytic oxidation.

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Highly selective ozone gas sensor based on nanocrystalline Zn0.95Co0.05O thin film obtained via spray pyrolysis technique

Cited by 57 publications

References 47 publications

Ligand-free all-inorganic metal halide nanocubes for fast, ultra-sensitive and self-powered ozone sensors

Ligand-free all-inorganic metal halide nanocubes for fast, ultra-sensitive and self-powered ozone sensors

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

Ozone catalytic oxidation capacity of Ti‐Co@Al₂O₃ for the treatment of biochemical tailwater from the coal chemical industry

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Highly selective ozone gas sensor based on nanocrystalline Zn0.95Co0.05O thin film obtained via spray pyrolysis technique

Cited by 57 publications

References 47 publications

Ligand-free all-inorganic metal halide nanocubes for fast, ultra-sensitive and self-powered ozone sensors

Ligand-free all-inorganic metal halide nanocubes for fast, ultra-sensitive and self-powered ozone sensors

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

Ozone catalytic oxidation capacity of Ti‐Co@Al2O3 for the treatment of biochemical tailwater from the coal chemical industry

Contact Info

Product

Resources

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Ozone catalytic oxidation capacity of Ti‐Co@Al₂O₃ for the treatment of biochemical tailwater from the coal chemical industry