Alkalized SnS Nanoflakes with Enhanced Sensing Properties towards Methanol Vapor

To determine thin films’ properties of commercially available gallic acid molecule, they were deposited onto a suitable substrate using spin coater. UV–Visible absorption spectroscopy and atomic force microscopy (AFM) were employed for the characterization of the deposited thin films. Characterization results obtained by these two techniques indicated that the gallic acid molecules are suitable for transfer onto a glass or quartz substrate. Gas-sensing properties and thickness of these thin films were elucidated using surface plasmon resonance (SPR). Thickness values of spun thin films were obtained at different spinning speeds. Then, the gas-sensing properties were examined by exposing them to the vapors of four volatile organic compounds (VOCs). It was found that the spun films of this material were selective for methanol vapor yielding rapid response and recovery time and thin films of gallic acid exhibited reversible changes in the optical behavior, which makes them suitable for practical methanol-detection applications.

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High Response and Selectivity Methanol Gas Sensor Using Molecular Imprinting Technique

Materials Science Forum ◽

10.4028/www.scientific.net/msf.809-810.731 ◽

2014 ◽

Vol 809-810 ◽

pp. 731-736

Author(s):

Qin Zhu ◽

Yu Min Zhang ◽

Jin Zhang ◽

Zhong Qi Zhu ◽

Qing Ju Liu

Keyword(s):

Gas Sensor ◽

Gas Sensing ◽

High Response ◽

Molar Ratio ◽

Methanol Vapor ◽

Sensing Properties ◽

Gas Sensing Properties ◽

Recovery Times ◽

Response And Recovery ◽

Infrared Spectrometer

A new gas sensor with high response and selectivity was fabricated by using molecularly imprinted powders (MIPs) which provide special recognition sites to methanol. The MIPs were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and fourier transform infrared spectrometer (FT-IR), respectively. The gas sensing properties of MIPs to methanol were investigated. The experimental results indicate that the sensors based on the MIPs show excellent gas sensing properties to methanol vapor, and the properties of the sensor with x=6:10 (x= methyl acrylic acid: LaFeO3, molar ratio) are the best. At the optimal operating temperature of 130°C, the response of the sensor (x=6:10) to 1 ppm methanol is 21, and the response and recovery times are 57 s and 67 s, respectively.

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Sensing Properties of WO3 as Thin Film Prepared by PVD towards Methanol Vapor

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.64.27 ◽

2016 ◽

Vol 64 ◽

pp. 27-33

Author(s):

Mayada Hbous

Keyword(s):

Thin Film ◽

Thin Films ◽

Methanol Vapor ◽

Sensing Properties ◽

Vapor Adsorption ◽

Glass Substrates

Three thin films were prepared by PVD starting from WO3 powder with thicknesses (998.7, 1620, 2240 nm) respectively on glass substrates under limited thermal and pressure conditions, studied their I-V characteristics and calculated the sensitivity for 100 ppm of METHANOL vapor adsorption (The temperature of the films have been changed from 25°C to 350°C). A comparison among them was achieved at 300 °C as an operating degree and found that the 1620 nm WO3 has more sensitivity and has more power to adsorb for methanol vapor on it.

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The discovery of mangosteen (Garcinia mangostana L.) leaves extracts exhibiting anti-quorum sensing properties

Planta Medica ◽

10.1055/s-0032-1320787 ◽

2012 ◽

Vol 78 (11) ◽

Author(s):

YM Chong ◽

WF Yin ◽

KG Chan

Keyword(s):

Quorum Sensing ◽

Garcinia Mangostana ◽

Sensing Properties

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Hacking in to the social media network of bacteria: The antiquorum sensing properties of herbs and spices

Planta Medica ◽

10.1055/s-0036-1596316 ◽

2016 ◽

Vol 81 (S 01) ◽

pp. S1-S381 ◽

Cited By ~ 1

Author(s):

S Cosa ◽

AM Viljoen ◽

SK Chaudhary ◽

W Chen

Keyword(s):

Social Media ◽

Sensing Properties ◽

The Social ◽

Social Media Network ◽

Herbs And Spices

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Preparation of One-dimensional Pt/SnO2 Nanofibers and NOx Gas-sensing Properties

Journal of Inorganic Materials ◽

10.3724/sp.j.1077.2013.12455 ◽

2013 ◽

Vol 28 (6) ◽

pp. 584-588 ◽

Cited By ~ 2

Author(s):

Shuang XU ◽

Ying YANG ◽

Hong-Yuan WU ◽

Chao JIANG ◽

Li-Qiang JING ◽

...

Keyword(s):

Gas Sensing ◽

One Dimensional ◽

Sensing Properties ◽

Gas Sensing Properties

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The Difference in Sensing Properties Towards Anions between Two Pyridinium Amide-Based Receptors with a Subtle Change of H-Bond Position

Letters in Organic Chemistry ◽

10.2174/1570180816666190801100603 ◽

2020 ◽

Vol 17 (6) ◽

pp. 472-478

Author(s):

Wei-tao Gong ◽

Wei-dong Qu ◽

Guiling Ning

Keyword(s):

Fluorescence Enhancement ◽

Small Difference ◽

Fluorescence Emission ◽

Subtle Change ◽

Sensing Properties ◽

Naked Eye ◽

Recognition Ability ◽

The Difference ◽

L1 And L2

Two pyridinium amide-based receptors L1 and L2 with a small difference of H-bond position of the amide have been synthesized and characterized. Interestingly, they exhibited a huge difference in sensing towards AcO- and H2PO4 -, respectively. Receptor L1 was found to be ‘naked-eye’ selective for AcO- anions, while receptor L2 showed clear fluorescence enhancement selective to H2PO4 - anion. The recognition ability has been established by fluorescence emission, UV-vis spectra, and 1HNMR titration.

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