Colorimetric chemosensor for detection of a volatile organic compound, ethylamine, under versatile conditions: Solution, thin-film, and dyed fabric

Noh, Ha Lim; Park, Young Ki; Oh, Byeong M.; Zheng, Jian; Kim, Sung Hoon; Lee, Woo‐Sung; Kim, Jong H.

doi:10.1016/j.snb.2019.127079

Cited by 9 publications

(5 citation statements)

References 34 publications

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“…Amines are an irritant to eyes, skin, and the respiratory tract. Inhalation of vapor-phase amines can oxidize hemoglobin, which becomes methemoglobin, causing it to lose its oxygen-carrying function, thereby damaging both the central nervous and cardiovascular systems . Children may be even more susceptible to the respiratory effects of amines than adults.…”

Section: Introductionmentioning

confidence: 99%

A Colorimetric Sensor for the Highly Selective, Ultra-sensitive, and Rapid Detection of Volatile Organic Compounds and Hazardous Gases

Sun

Rotaru

Robeyns

et al. 2021

Ind. Eng. Chem. Res.

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We present a new colorimetric chemosensor of formula [Fe(H2btm)2(H2O)2]Cl2 (1) (H2btm = di(1H-tetrazol-5-yl)methane), allowing to detect at real time, with a high selectivity and ultra-sensitivity, 14 different volatile organic compounds (VOCs) and hazardous gases (HGs), in particular amines, which are detected very quickly (<2 min) with very high sensitivity (0.58 ppm for ammonia (NH3), 0.62 ppm for hydrazine (NH2–NH2), 0.45 ppm for isobutylamine, and 0.71 ppm for diethylamine). The detection is accompanied by significant and fast color changes detectable by the naked eye at ambient conditions. In addition, different VOCs could be distinguished by simple and intuitive standard chemometric means using a handful smartphone-based analytical method, offering a large color panel depending on the detected molecules. The crystal lattice of 1 reconstructs after adsorbing VOCs vapors, reconstruction that is accompanied by a spin state and a color change. In addition to its high thermal stability (up to 170 °C), the colorimetric sensor showed excellent reusability by consecutive 7 cycles of adsorption–desorption. It operates at ambient conditions, is low cost, environmentally friendly, and easy to use, and shows excellent and fast detection performances. Such features offer attractive prospects for 1, which could be used for in-field detection and food safety control in environmental conditions.

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Section: Introductionmentioning

confidence: 99%

A Colorimetric Sensor for the Highly Selective, Ultra-sensitive, and Rapid Detection of Volatile Organic Compounds and Hazardous Gases

Sun

Rotaru

Robeyns

et al. 2021

Ind. Eng. Chem. Res.

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“…The total color change ∆E is the distance or the difference between two colors and it is a metric understanding how the human eye perceives color difference. Color change ∆E values more than 3 indicate that the color change is visually perceivable by the human eye [22]. All samples exhibited a color difference value of more than 10.0 as shown in the S13 (Supplementary File), indicating that the color of these samples is noticeably discernable.…”

Section: Colorimetric Sensing and Uv/vis Studiesmentioning

confidence: 98%

Synthesis and Antibacterial Activity of Rhodanine-Based Azo Dyes and Their Use as Spectrophotometric Chemosensor for Fe3+ Ions

2020

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This research includes the design and synthesis of new derivatives for rhodanine azo compounds (4a–c) containing a naphthalene ring. Physiochemical properties of the synthesized compounds were determined by their melting points, FTIR, 1H-NMR, 13C-NMR, and elemental analysis spectroscopic techniques. The biological activities of the newly prepared azo rhodanine compounds were evaluated against some pathogenic bacteria using three different bacterial species including (Escherichia coli., Pseudomonas aeruginosa, Staphylococcus aureus) and compared with amoxicillin as a reference drug. The results showed that our compounds have moderate-to-good vital activity against the mentioned pathogenic bacteria. The selectivity and sensitivity of the newly prepared rhodanine azo compounds with transition metals Co2+, Cu2+, Zn2+, Ni2+, and Fe3+ were studied using UV–vis and fluorescence spectroscopy techniques. Among the synthesized azos, azo 4c showed affinity toward Fe3+ ions with an association constant of 4.63 × 108 M−1. Furthermore, this azo showed high sensitivity toward Fe3+ ions with detection limits of 5.14 µM. The molar ratio and Benesi–Hildebrand methods confirmed the formation of complexes between azo 4c and Fe3+ with 1:2 binding stoichiometry. Therefore, azo 4c showed excellent potential for developing efficient Fe3+ chemosensors.

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“…Additionally, the increase in air flow rate or temperature will induce VOC desorption and environmental re-contamination. After saturation, the sorbent must be carefully treated and disposed in special containers, considering the contaminant's hazard potential [9,10].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Activity of Cu2S/WO3 and Cu2S/SnO2 Heterostructures for Indoor Air Treatment

Eneşca

Isac

2021

Materials

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Volatile organic compounds (VOCs) are commonly found in indoor spaces (e.g., homes or offices) and are often related to various illnesses, some of them with carcinogenic potential. The origins of VOC release in the indoor environment are in office products, building materials, electronics, cleaning products, furniture, and maintenance products. VOC removal can be done based on two types of technologies: adsorption in specific materials and decomposition via oxidative processes. The present article reports the development and photocatalytic activity of two heterostructures (Cu2S/WO3 and Cu2S/SnO2) used for indoor air decontamination. The acetaldehyde removal rate is discussed in correlation with the S-scheme mechanisms established between the heterostructure components but also comparatively with the bare catalysts’ activity. Acetaldehyde was considered as a VOC reference because it was found by the International Agency for Research on Cancer to be one of the most frequent air toxins with potential carcinogenic effects. The samples contained monoclinic WO3, tetragonal SnO2, and orthorhombic Cu2S crystalline structures. The Cu2S crystallite size in the heterostructure varied from 75.9 to 82.4 Å, depending on the metal oxide substrate. The highest photocatalytic efficiency (75.7%) corresponded to Cu2S/SnO2, with a constant rate of 0.106 s−1 (which was three times faster than WO3 or SnO2 and seven and a half times faster than Cu2S).

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Colorimetric chemosensor for detection of a volatile organic compound, ethylamine, under versatile conditions: Solution, thin-film, and dyed fabric

Cited by 9 publications

References 34 publications

A Colorimetric Sensor for the Highly Selective, Ultra-sensitive, and Rapid Detection of Volatile Organic Compounds and Hazardous Gases

A Colorimetric Sensor for the Highly Selective, Ultra-sensitive, and Rapid Detection of Volatile Organic Compounds and Hazardous Gases

Synthesis and Antibacterial Activity of Rhodanine-Based Azo Dyes and Their Use as Spectrophotometric Chemosensor for Fe3+ Ions

Photocatalytic Activity of Cu2S/WO3 and Cu2S/SnO2 Heterostructures for Indoor Air Treatment

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