Pt/WN based fuel cell type methanol sensor

Meng, Dong; Zhang, Shendan; Thomas, Tiju; Huang, Chaozhu; Zhao, Jingwei; Zhao, Ruiyang; Shi, Ying; Qu, Fengdong

doi:10.1016/j.snb.2020.127686

Cited by 31 publications

(20 citation statements)

References 55 publications

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“…Cheaper, more compact, and less power consuming ( Güntner et al., 2020 ) are chemical gas sensors (e.g. Pt-loaded tungsten nitride ( Meng et al., 2020 ), polymer-coated Si bridges ( Guo et al., 2011 ), electrochemical cells ( Ou et al., 2019 ), or nanoporous Al 2 O 3 -coated carbon nanotubes ( Zhao et al., 2012 )) that detect methanol from the headspace of liquids. However, most are interfered by ethanol that is usually present at high content ( Table 1 ), and none has been tested on hand sanitizers ( Table 2 ).…”

Section: Introductionmentioning

confidence: 99%

Detecting methanol in hand sanitizers

et al. 2021

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Summary The coronavirus disease 2019 (COVID-19) pandemic has increased dramatically the demand for hand sanitizers. A major concern is methanol adulteration that caused more than 700 fatalities in Iran and U.S.A. (since February 2020). In response, the U.S. Food and Drug Administration has restricted the methanol content in sanitizers to 0.063 vol% and blacklisted 212 products (as of November 20, 2020). Here, we present a low-cost, handheld, and smartphone-assisted device that detects methanol selectively in sanitizers between 0.01 and 100 vol% within two minutes. It features a nanoporous polymer column that separates methanol selectively from confounders by adsorption. A chemoresistive gas sensor detects the methanol. When tested on commercial sanitizers (total 76 samples), methanol was quantified in excellent (R 2 = 0.99) agreement to “gold standard” gas chromatography. Importantly, methanol quantification was hardly interfered by sanitizer composition and viscosity. This device meets an urgent need for on-site methanol screening by authorities, health professionals, and even laymen.

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Section: Introductionmentioning

confidence: 99%

Detecting methanol in hand sanitizers

et al. 2021

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“…In this context, the development of non-enzymatic electrochemical sensors using various materials including polymers, 8,9 metal 10 and metal oxide [11][12][13][14] nanoparticles (NPs), carbon-based materials and their composites 12,[15][16][17] has been intensively explored. In particular, metal and metal oxide NPs, such as Pt, 18 Cu, 19,20 CuO, 11,21 and Pd 22 NPs, have attracted signicant attention because of their high surface energy and large surface area and thus high electrochemical catalytic activity in numerous electrochemical processes, including methanol electrooxidation. Normally, these NPs are loaded onto the inorganic/ organic supports as electrochemical catalysts.…”

Section: Introductionmentioning

confidence: 99%

Efficient nickel or copper oxides decorated graphene–polyaniline interface for application in selective methanol sensing

Nguyen¹,

Le²,

Nguyên³

et al. 2021

RSC Adv.

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“…E-mail: ruansp@jlu.edu.cn b Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, 315201, China sensitivity and (iii) sensitivity dri during long-term operation. 20 Recently, various efforts have been attempted to surmount these challenges. The modication of carbon support materials affects the surface electronic structure of Pt nanoparticles, such as acid treated carbon bers, graphene-carbon black hybrid and S-doped carbon layer.…”

Section: Introductionmentioning

confidence: 99%