Fabrication and investigation of TiO1.5/ZnO nanocomposite nanosensor for detection of CO and CH4 gases

Vatandoust, Leila; Habibi, Ali; Naghshara, Hamid; Aref, S. Mohammadi

doi:10.1016/j.surfin.2022.102001

Cited by 8 publications

(2 citation statements)

References 44 publications

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“…Recent studies show that this is a promising method for the deposition of gas sensors. Gas sensors obtained by the sol–gel method are used in a wide range of applications, including to monitor and detect hazardous gases such as CO, CO 2 , NO 2 , and CH 4 [ 16 , 17 , 18 ] to ensure safety and air quality.…”

Section: Introductionmentioning

confidence: 99%

Layered Sol–Gel Deposition of a Sn, Ti, Zn, and Pr Mixed Oxide Thin Film with Electrical Properties for Gas Sensing

Dascalu

Hornoiu

Moreno

et al. 2023

Gels

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This article presents a layered mixed oxide thin film composed of Sn, Ti, Zn, and Pr obtained by sol–gel deposition for gas sensing applications. The film was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV-Vis spectroscopy, Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), and Electrochemical impedance spectroscopy (EIS). X-ray diffraction results showed the presence of a single crystalline phase with a cassiterite-like structure. Raman spectroscopy revealed characteristic bands of oxygen-deficient SnO2-based nanocrystallites. The band gap energy calculated from UV-Vis spectroscopy is Eg = 3.83 eV. The XPS proved the presence on the surface of all elements introduced by the inorganic precursors as well as their oxidation states. Thus, Sn4+, Ti4+, Zn2+, and Pr3+ were detected on the surface. Moreover, by XPS, we highlighted the presence of OH groups and water adsorbed on the surface. SEM showed the five-layer morphology of the film after five successive depositions. Electrochemical properties were determined by EIS-impedance spectroscopy. The selectivity for gas sensing was also investigated for methane, propane, and formaldehyde and the gas sensing mechanism was explained. The results indicated that the mixed oxide thin film exhibited high sensitivity and selectivity towards specific gases.

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Section: Introductionmentioning

confidence: 99%

Layered Sol–Gel Deposition of a Sn, Ti, Zn, and Pr Mixed Oxide Thin Film with Electrical Properties for Gas Sensing

Dascalu

Hornoiu

Moreno

et al. 2023

Gels

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show abstract

“…Gas sensors have emerged as an indispensable technology in various industries due to their ability to detect and measure different gases in different environments. For instance, in the petrochemical industry, the detection of hazardous gases such as CO [13,14], CO 2 [15][16][17][18][19], NO 2 [20,21], and CH 4 [22,23] is critical to maintaining safe working conditions and avoiding catastrophic accidents. Similarly, food processing industries require gas sensors to monitor for hazardous gases, such as carbon dioxide, that can accumulate in confined spaces and pose a serious threat to worker safety.…”

Section: Introductionmentioning

confidence: 99%

Sol-Gel Production of Semiconductor Metal Oxides for Gas Sensor Applications

Belaid¹,

Houimi²,

Zaki³

et al. 2023

Sol-Gel Method - Recent Advances

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As they are widely utilized in industries including the food packaging industry, indoor air quality testing, and real-time monitoring of man-made harmful gas emissions to successfully combat global warming, reliable and affordable gas sensors represent enormous market potential. For environmental monitoring, chemical safety regulation, and many industrial applications, the detection of carbon monoxide (CO), carbon dioxide (CO2), nitrogen dioxide (NO2), and methane (CH4) gases is essential. To reliably and quantitatively detect these gases, much-improved materials and methods that are adaptable to various environmental factors are needed using low-cost fabrication techniques such as sol–gel. The advantages of employing metal oxide nanomaterials-based chemoresistive for creating high-performance gas sensors are shown by key metrics such as selectivity, sensitivity, reaction time, and detection. The primary sensing methods are also grouped and thoroughly covered. In light of the current constraints, anticipated future developments in the field of sol–gel nanomaterial-based chemoresistive gas sensors are also highlighted.

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Fabrication of a $$\hbox {CO}_{2}$$ Gas Sensor Based on ZnO Thin Film from the Perspective of Sensing Vehicle Tailpipe-Emitted Pollution

Bej

Chattaraj

Mahapatra

et al. 2023

J. Electron. Mater.

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Fabrication and investigation of TiO1.5/ZnO nanocomposite nanosensor for detection of CO and CH4 gases

Cited by 8 publications

References 44 publications

Layered Sol–Gel Deposition of a Sn, Ti, Zn, and Pr Mixed Oxide Thin Film with Electrical Properties for Gas Sensing

Layered Sol–Gel Deposition of a Sn, Ti, Zn, and Pr Mixed Oxide Thin Film with Electrical Properties for Gas Sensing

Sol-Gel Production of Semiconductor Metal Oxides for Gas Sensor Applications

Fabrication of a $$\hbox {CO}_{2}$$ Gas Sensor Based on ZnO Thin Film from the Perspective of Sensing Vehicle Tailpipe-Emitted Pollution

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