Ag decorated SnO2 nanoparticles to enhance formaldehyde sensing properties

Liú, Dan; Pan, Junli; Tang, Jianghong; Liu, Weiqiao; Bai, Shouli; Luo, Ruixian

doi:10.1016/j.jpcs.2018.08.028

Cited by 90 publications

(35 citation statements)

References 41 publications

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“…Gas sensors based on metal oxide nanostructures have been widely studied and used in applications ranging from health and safety to emission control (Comini et al, 2002;Lin et al, 2015;Yao et al, 2016;Kwak et al, 2018;Liu et al, 2019a). These sensors are attractive because of their high sensitivity, low cost, simplicity and compatibility with modern electronic devices due to direct electrical readouts (Miller et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive and Selective Ethanol Sensor Based on ZnO Nanorod on SnO2 Thin Film Fabricated by Spray Pyrolysis

et al. 2019

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This work reports the fabrication of mixed structure of ZnO nanorod on SnO 2 thin film via spray pyrolysis followed by thermal annealing and their gas sensing properties. ZnO/SnO 2 nanostructures are successfully prepared on a gold interdigitated alumina substrate by spraying varying mixed precursor concentrations of zinc acetate and tin (IV) chloride pentahydrate solutions in ethanol and thermal annealing. The morphology of the nanostructures is controlled by tailoring the Zn:Sn ratio in the precursor solution mixture. Unique ZnO crystals and ZnO nanorods are observed under a field emission scanning electron microscopy (FESEM) when the Zn/Sn ratio in the precursor solution is in between 13:7 and 17:3 after thermal annealing. The fabricated nanostructures are tested for ethanol, methane and hydrogen in air ambient for various gas concentrations ranging from 25 to 400 ppm and the effect of fabrication conditions on the sensitivity and selectivity are studied. Among the nanostructure sensors studied, the film fabricated with molar ratio of Zn/Sn =3:1 shows better sensitivity and selectivity to ethanol due to high sensing surface area of the nanorod. The response to 25 ppm ethanol is found to be as high as 50 at an operating temperature of 400 • C.

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Section: Introductionmentioning

confidence: 99%

Highly Sensitive and Selective Ethanol Sensor Based on ZnO Nanorod on SnO2 Thin Film Fabricated by Spray Pyrolysis

et al. 2019

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“…The vibration peak at 400-620 cm -1 corresponds to the O-Sn-O and Sn-O stretching vibrations which is similar to the previously reported work (Ali et al 2019;Chen et al 2012). The peak 1608 cm -1 is attributed to the bending vibration modes of the N-H group and 3340 cm -1 can be ascribed to the O-H stretching or N-H stretching vibrations of absorbed water molecules (Liu et al 2019). The CA-SnO 2 nanoparticles' vibration peak transmittance has been decreased depending on the formation of molecules.…”

Section: Ft-ir Spectroscopymentioning

confidence: 99%

Fabrication of different SnO2 nanorods for enhanced photocatalytic degradation and antibacterial activity

Gnanamoorthy

Yadav

Yadav³

et al. 2021

Environ Sci Pollut Res

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The acid-mediated (Oxalic acid [OXA], Cinnamic acid [CA], and itaconic acid [IA]) SnO 2 nanorods were synthesized by the hydrothermal method. The synthesized SnO 2 nanorods, in turn, were analyzed with various physic-chemical techniques such as the X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), scanning electron microscope (SEM), and Raman spectroscopy. Furthermore, the photocatalytic activity of the different SnO 2 nanorods was investigated with the malachite green (MG) dye under visible light illumination. The OXA-SnO 2 nanorods displayed an excellent degradation performance with observed values of 91% compared to other nanomaterials' (CA and IA-SnO 2 ) photocatalytic activity. The different synthesized SnO 2 materials were tested for antibacterial and antifungal studies; this result may be used or developed in future research activities.

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“…Ag modified SnO 2 nanoparticles prepared by hydrothermal in situ reduction improved the sensor's ability to detect formaldehyde. This is due to the charge transfer between Ag and SnO 2 , which increases the absorption band on the composite by 20 nm, thus improving the gas sensitivity (Liu et al, 2019). When the acetone is detected by Ag/SnO 2 porous tubular nanostructures prepared by electrospinning, the sensor resistance changed rapidly and significantly.…”

Section: Sensing Mechanism Of Sno 2 Gas Sensormentioning

confidence: 99%

Recent Advances of SnO2-Based Sensors for Detecting Volatile Organic Compounds

Zhou

Peng

et al. 2020

Front. Chem.

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SnO 2 based sensors has received extensive attention in the field of toxic gas detection due to their excellent performances with high sensitivity, fast response, long-term stability. Volatile organic compounds (VOCs), originate from industrial production, fuel burning, detergent, adhesives, and painting, are poisonous gases with significant effects on air quality and human health. This mini-review focuses on significant improvement of SnO 2 based sensors in VOCs detection in recent years. In this review, the sensing mechanism of SnO 2-based sensors detecting VOCs are discussed. Furthermore, the improvement strategies of the SnO 2 sensor from the perspective of nanomaterials are presented. Finally, this paper summarizes the sensing performances of these SnO 2 nanomaterial sensors in VOCs detection, and the future development prospect and challenges is proposed.

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Ag decorated SnO2 nanoparticles to enhance formaldehyde sensing properties

Cited by 90 publications

References 41 publications

Highly Sensitive and Selective Ethanol Sensor Based on ZnO Nanorod on SnO2 Thin Film Fabricated by Spray Pyrolysis

Highly Sensitive and Selective Ethanol Sensor Based on ZnO Nanorod on SnO2 Thin Film Fabricated by Spray Pyrolysis

Fabrication of different SnO2 nanorods for enhanced photocatalytic degradation and antibacterial activity

Recent Advances of SnO2-Based Sensors for Detecting Volatile Organic Compounds

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