Excellent acetone sensor of La-doped ZnO nanofibers with unique bead-like structures

Xu, Xingtang; Chen, Y.; Ma, S.Y.; Li, W.Q.; Mao, Y.Z.

doi:10.1016/j.snb.2015.02.073

Cited by 122 publications

(41 citation statements)

References 55 publications

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“…(c). Owing to spin–orbit splitting, the La 3d core level is split into two components, 3d 5/2 and 3d 3/2 , appearing in the region of 839 and 857 eV respectively . The FWHM values of La 3d 5/2 and La 3d 3/2 were calculated to be 7.38 and 5.01 eV respectively.…”

Section: Resultsmentioning

confidence: 97%

Chemically modified electrospun nanofiber for high adsorption and effective photocatalytic decontamination of organophosphorus compounds

Lakshmi

Kadirvelu

Mohan

2019

J of Chemical Tech & Biotech

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BACKGROUND Organophosphorus (OP) pesticides are widely used to prevent the destruction of crops by various pests, including insects and rodents, which can affect the yield. On the other hand, the use of OP pesticides is linked to various disorders in animals and humans who are exposed to pesticides directly or indirectly. The current study deals with the use of lanthanum (La)‐doped zinc oxide (ZnO) crystals grown on electrospun nanofibers for photocatalytic degradation of methyl parathion (MP), an important OP pesticide. RESULTS The electrospinning process was optimized using various parameters. Similarly, the crystal growth conditions such as La concentration, pH, temperature and time were optimized for further studies. Complete degradation was achieved at 150 min from the start and was supported by a reduction in photoluminescence of the reaction mixture. The total organic carbon content was used to decide the mineralization of the toxin. The degradation followed first‐order kinetics with rate constant 0.018 min−1. Hence MP was successfully degraded using La‐ZnO/polyacrylonitrile (PAN) fibers, and the degraded by‐product was confirmed by gas chromatography/mass spectrometry (GC/MS) analysis. CONCLUSION Chemically modified La‐ZnO/PAN nanofibers were an efficient material to decontaminate the pesticide MP, achieving 100% efficiency. The process may be ecofriendly for upscaling photocatalytic degradation processes. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 97%

Chemically modified electrospun nanofiber for high adsorption and effective photocatalytic decontamination of organophosphorus compounds

Lakshmi

Kadirvelu

Mohan

2019

J of Chemical Tech & Biotech

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“…This results in less ionic oxygen species on the surface and, consequently, in an increased conductance of the structures. The proposed reactions with acetone and ethanol that lead to a sensing signal are resumed in Equations 2–4 [30–31] and Eq. 2 [32], respectively.…”

Section: Resultsmentioning

confidence: 99%

A composite structure based on reduced graphene oxide and metal oxide nanomaterials for chemical sensors

Galstyan¹,

Comini²,

Kholmanov³

et al. 2016

Beilstein J. Nanotechnol.

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SummaryA hybrid nanostructure based on reduced graphene oxide and ZnO has been obtained for the detection of volatile organic compounds. The sensing properties of the hybrid structure have been studied for different concentrations of ethanol and acetone. The response of the hybrid material is significantly higher compared to pristine ZnO nanostructures. The obtained results have shown that the nanohybrid is a promising structure for the monitoring of environmental pollutants and for the application of breath tests in assessment of exposure to volatile organic compounds.

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“…ZnO-based 1D nanostructured materials have been doped by Ce [11,193], Pr [6], Er [194], La [190,195], Pt [190], Cu [190,196], Mn [197], Co [198], Al [199], Pd [176] and In [200] and have been used to detect acetone, acetic acid, ethanol, H 2 S, and CO.…”

Section: Reviewmentioning

confidence: 99%

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

Muhammad¹,

Motta²,

Shafiei³

2018

Beilstein J. Nanotechnol.

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Electrospun one-dimensional (1D) nanostructures are rapidly emerging as key enabling components in gas sensing due to their unique electrical, optical, magnetic, thermal, mechanical and chemical properties. 1D nanostructures have found applications in numerous areas, including healthcare, energy storage, biotechnology, environmental monitoring, and defence/security. Their enhanced specific surface area, superior mechanical properties, nanoporosity and improved surface characteristics (in particular, uniformity and stability) have made them important active materials for gas sensing applications. Such highly sensitive and selective elements can be embedded in sensor nodes for internet-of-things applications or in mobile systems for continuous monitoring of air pollutants and greenhouse gases as well as for monitoring the well-being and health in everyday life. Herein, we review recent developments of gas sensors based on electrospun 1D nanostructures in different sensing platforms, including optical, conductometric and acoustic resonators. After explaining the principle of electrospinning, we classify sensors based on the type of materials used as an active sensing layer, including polymers, metal oxide semiconductors, graphene, and their composites or their functionalized forms. The material properties of these electrospun fibers and their sensing performance toward different analytes are explained in detail and correlated to the benefits and limitations for every approach.

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Excellent acetone sensor of La-doped ZnO nanofibers with unique bead-like structures

Cited by 122 publications

References 55 publications

Chemically modified electrospun nanofiber for high adsorption and effective photocatalytic decontamination of organophosphorus compounds

Chemically modified electrospun nanofiber for high adsorption and effective photocatalytic decontamination of organophosphorus compounds

A composite structure based on reduced graphene oxide and metal oxide nanomaterials for chemical sensors

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

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