Ambient temperature operated acetaldehyde vapour detection of spray deposited cobalt doped zinc oxide thin film

Shalini, S.; Balamurugan, D.

doi:10.1016/j.jcis.2015.12.044

Cited by 15 publications

(9 citation statements)

References 28 publications

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“…Up to date, several technologies were considered for their detection by using metal oxides [ 42 ] or QCM coated with polymers [ 43 ] such as MIP [ 44 ]. As compared to various commercial aldehyde sensors’ sensitivity (~5 ppm), the peptide-based QCM sensors have shown a better sensitivity [ 11 ] and comparable to that of a sensor developed by Imashi et al [ 45 ] and Giberti et al [ 46 ].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Three Peptide Immobilization Techniques on a QCM Surface Related to Acetaldehyde Responses in the Gas Phase

Wasilewski

Szulczyński

Kamysz

et al. 2018

Sensors

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The quartz-crystal microbalance is a sensitive and universal tool for measuring concentrations of various gases in the air. Biochemical functionalization of the QCM electrode allows a label-free detection of specific molecular interactions with high sensitivity and specificity. In addition, it enables a real-time determination of its kinetic rates and affinity constants. This makes QCM a versatile bioanalytical screening tool for various applications, with surface modifications ranging from the detection of single molecular monolayers to whole cells. Various types of biomaterials, including peptides mapping the binding sites of olfactory receptors, can be deposited as a sensitive element on the surface of the electrodes. One of key ways to ensure the sensitivity and accuracy of the sensor is provided by application of an optimal and repeatable method of immobilization. Therefore, effective sensors operation requires development of an optimal method of deposition. This paper reviews popular techniques (drop-casting, spin-coating, dip-coating) for coating peptides on piezoelectric crystals surface. Peptide (LEKKKKDC-NH2) derived from an aldehyde binding site in the HarmOBP7 protein was synthesized and used as a sensing material for the biosensor. The degree of deposition of the sensitive layer was monitoring by variations in the sensors frequency. The highest mass threshold for QCM measurements for peptides was approximately 16.43 µg·mm−2 for spin coating method. Developed sensor exhibited repeatable response to acetaldehyde. Moreover, responses to toluene was observed to evaluate sensors specificity. Calibration curves of the three sensors showed good determination coefficients (R2 > 0.99) for drop casting and dip coating and 0.97 for the spin-coating method. Sensors sensitivity vs. acetaldehyde were significantly higher for the dip-coating and drop-casting methods and lower for spin-coating one.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Three Peptide Immobilization Techniques on a QCM Surface Related to Acetaldehyde Responses in the Gas Phase

Wasilewski

Szulczyński

Kamysz

et al. 2018

Sensors

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“…Additionally, the 1H-NMR spectroscopic study was recorded; the chemical shifts were in agreement with the proposed structure as follows. For C 8…”

Section: Identification Of Carbonyl-24-dinitrophenylhydrazonementioning

confidence: 99%

“…Indeed, acetaldehyde for example is extremely irritating at higher concentrations (greater than 50 ppm) [7]. Then, it is a probably carcinogenic compound, with other possible side effects of overexposure including coughing, pulmonary edema, erythema (redness of skin) and necrosis [8]. Consequently, it has low exposure limits.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Study of 2,4‐Dinitrophenylhydrazine as Derivatization Reagent and Aldehydes at Carbon Glassy Electrode

et al. 2017

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A selective method based on derivatization with 2,4‐dinitrophenylhydrazine (DNPH) is described for the determination of several carbonyl compounds. The factors affecting the derivatization reaction of aldehyde and DNPH were investigated. The product of the derivatization reaction has been characterized by UV/Vis spectrophotometry, NMR, infrared spectroscopy and cyclic voltammetry. Then, an electrochemical study for the determination of aldehyde‐2.4‐dinitrophenylhydrazone was performed at glassy carbon electrode (GCE) using square wave voltammetry (SWV). After the optimization of experimental parameters, the limits of detection (at 3σ) obtained for all aldehyde‐2,4‐DNPH were varied from 15.82 to 78.39 μmol L−1 and relative standard deviations were between 1.8 and 4.5%. Finally, the proposed method was applied to determine the aldehydes concentration in drinking water and orange juice samples with satisfactory results.

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“…Recent studies have highlighted the potential of pure [42,43,44,45,46,47,48,49] or doped [50,51,52] zinc oxide for the detection of this pollutant. While Ga doping has been shown to strongly improve CO sensing [53], there have hitherto been no results as to the detection of acetaldehyde using Ga-doped ZnO sensitive layers.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Sputtered ZnO:Ga Thin Films Integrated by a Simple Stencil Mask Process on Microsensor Platforms for Sub-ppm Acetaldehyde Detection

Presmanes

Thimont

Chapelle

et al. 2017

Sensors

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The integration of a 50-nm-thick layer of an innovative sensitive material on microsensors has been developed based on silicon micro-hotplates. In this study, integration of ZnO:Ga via radio-frequency (RF) sputtering has been successfully combined with a low cost and reliable stencil mask technique to obtain repeatable sensing layers on top of interdigitated electrodes. The variation of the resistance of this n-type Ga-doped ZnO has been measured under sub-ppm traces (500 ppb) of acetaldehyde (C2H4O). Thanks to the microheater designed into a thin membrane, the generation of very rapid temperature variations (from room temperature to 550 °C in 25 ms) is possible, and a rapid cycled pulsed-temperature operating mode can be applied to the sensor. This approach reveals a strong improvement of sensing performances with a huge sensitivity between 10 and 1000, depending on the working pulsed-temperature level.

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Ambient temperature operated acetaldehyde vapour detection of spray deposited cobalt doped zinc oxide thin film

Cited by 15 publications

References 28 publications

Evaluation of Three Peptide Immobilization Techniques on a QCM Surface Related to Acetaldehyde Responses in the Gas Phase

Evaluation of Three Peptide Immobilization Techniques on a QCM Surface Related to Acetaldehyde Responses in the Gas Phase

Electrochemical Study of 2,4‐Dinitrophenylhydrazine as Derivatization Reagent and Aldehydes at Carbon Glassy Electrode

Highly Sensitive Sputtered ZnO:Ga Thin Films Integrated by a Simple Stencil Mask Process on Microsensor Platforms for Sub-ppm Acetaldehyde Detection

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