Articles with "water microdroplets" as a keyword



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Formation of Uniform Water Microdroplets on Wrinkled Graphene for Ultrafast Humidity Sensing.

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Published in 2018 at "Small"

DOI: 10.1002/smll.201703848

Abstract: Portable humidity sensors with ultrafast responses fabricated in wearable devices have promising application prospects in disease diagnostics, health status monitoring, and personal healthcare data collecting. However, prolonged exposures to high-humidity environments usually cause device degradation… read more here.

Keywords: formation uniform; water; humidity; sensor ... See more keywords
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Efficient removal of indoor particulate matter using water microdroplets generated by a MHz-frequency ultrasonic atomizer

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Published in 2020 at "Building and Environment"

DOI: 10.1016/j.buildenv.2020.106797

Abstract: Abstract Airborne particulate matter (PM) has emerged as an important global environmental and social issue due to its harmful health effects. Various techniques have been introduced to remove indoor PM. However, an effective and sustainable… read more here.

Keywords: microdroplets generated; mhz frequency; generated mhz; water microdroplets ... See more keywords
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Optimizing Coaxial Sonic Spray Geometry for Generating Water Microdroplets.

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Published in 2022 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.1c05337

Abstract: Sonic spray creates a stream of neutral and charged microdroplets without application of voltage, heating, laser irradiation, or corona discharge. The solvent of interest flows through an inner capillary (usually constructed of fused silica) that… read more here.

Keywords: water; chemistry; sonic spray; geometry ... See more keywords
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Spraying Water Microdroplets Containing 1,2,3-Triazole Converts Carbon Dioxide into Formic Acid.

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Published in 2022 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.2c07779

Abstract: We report the use of 1,2,3-triazole (Tz)-containing water microdroplets for gas-phase carbon dioxide (CO2) reduction at room temperature. Using a coaxial sonic spraying setup, the CO2 can be efficiently captured by Tz and converted to… read more here.

Keywords: formic acid; water microdroplets; carbon dioxide;
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Direct C(sp3)-N Bond Formation between Toluene and Amine in Water Microdroplets.

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Published in 2022 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.2c10032

Abstract: Unlike the inertness of bulk water, water microdroplets exhibit some remarkable reactivities. We report that water microdroplets can directly produce stable C7H7+ cations (a combination of benzylic and tropylium cations) from toluene and other substrates… read more here.

Keywords: sp3 bond; water microdroplets; water; bond formation ... See more keywords
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Catalyst-Free Decarboxylative Amination of Carboxylic Acids in Water Microdroplets.

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Published in 2022 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.2c12236

Abstract: Previous studies have shown that hydroxyl radicals can be formed at the water-gas surface of water microdroplets. We report the use of in situ generated hydroxyl radicals to carry out an organic transformation in one… read more here.

Keywords: decarboxylative amination; free decarboxylative; catalyst free; water ... See more keywords
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One-Step Formation of Pharmaceuticals Having a Phenylacetic Acid Core Using Water Microdroplets.

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Published in 2023 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.3c00773

Abstract: The properties of water microdroplets strikingly differ from bulk water. Using room-temperature water microdroplets, we find that toluene can react with CO2 to form phenylacetic acid in one step without any catalyst with negative high… read more here.

Keywords: water; one step; acid; water microdroplets ... See more keywords
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Spontaneous oxidation of I- in water microdroplets and its atmospheric implications.

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Published in 2022 at "Chemical communications"

DOI: 10.1039/d2cc04288f

Abstract: Atomic and molecular iodine, I˙ and I2, play important roles in the atmosphere, such as the catalytic depletion of ozone and the oxidation of gaseous elemental mercury. It is known that the major source of… read more here.

Keywords: oxidation; oxidation water; water; chemistry ... See more keywords
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Sprayed water microdroplets containing dissolved pyridine spontaneously generate pyridyl anions

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Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"

DOI: 10.1073/pnas.2200991119

Abstract: Significance Water microdroplets can accelerate chemical reactions by orders of magnitude compared to the same reactions in bulk water and/or trigger spontaneous reactions that do not occur in bulk solution. Among the properties of water… read more here.

Keywords: water microdroplets; pyridyl anions; pyridine; water ... See more keywords
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Making ammonia from nitrogen and water microdroplets

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Published in 2023 at "Proceedings of the National Academy of Sciences of the United States of America"

DOI: 10.1073/pnas.2301206120

Abstract: Water (H2O) microdroplets are sprayed onto a magnetic iron oxide (Fe3O4) and Nafion-coated graphite mesh using compressed N2 or air as the nebulizing gas. The resulting splash of microdroplets enters a mass spectrometer and is… read more here.

Keywords: nitrogen water; water; ammonia nitrogen; water microdroplets ... See more keywords