Articles with "water microdroplets" as a keyword



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

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

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

Highly Sensitive Surface-Enhanced Raman Scattering Detection of Hydroxyl Radicals in Water Microdroplets Using Phthalhydrazide/Ag Nanoparticles Nanosensor.

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Published in 2024 at "Environmental science & technology"

DOI: 10.1021/acs.est.4c03081

Abstract: The spontaneous generation of hydrogen peroxide (H2O2) within atmospheric microdroplets, such as raindrops and aerosols, plays a crucial role in various environmental processes including pollutant degradation and oxidative stress. However, quantifying hydroxyl radicals (•OH), essential… read more here.

Keywords: detection; surface enhanced; highly sensitive; hydroxyl radicals ... See more keywords

Atmospheric Sampling Mass Spectrometers Activate and Ionize Neutral Water Microdroplets to MeV Energies and up to 200,000+ Charges: Implications for Water Stability and Unusual Chemistry in Microdroplets

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Published in 2025 at "ACS Central Science"

DOI: 10.1021/acscentsci.5c01518

Abstract: Neutral water microdroplets formed by condensation were introduced into a mass spectrometer with a standard stainless-steel capillary atmospheric interface. Placing volatile samples near the mass spectrometer inlet led to spectra comparable to those of electrospray… read more here.

Keywords: chemistry; neutral water; water; water microdroplets ... See more keywords

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;

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

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

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

Designer "Quasi-Benzyne": The Spontaneous Reduction of Ortho-Diiodotetrafluorobenzene on Water Microdroplets.

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Published in 2024 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.4c02819

Abstract: It has been widely shown that water microdroplets have a plethora of unique properties that are highly distinct from those of bulk water, among which an especially intriguing one is the strong reducing power as… read more here.

Keywords: c6f4i2; water; water microdroplets; ortho diiodotetrafluorobenzene ... See more keywords

Water Microdroplets Surrounded by Alcohol Vapor Cause Spontaneous Oxidation of Alcohols to Organic Peroxides.

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Published in 2024 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.4c04092

Abstract: Using real-time mass spectrometric (MS) monitoring, we demonstrate one-step, catalyst-free spontaneous oxidation of various alcohols (ROH) to key reactive intermediates for the formation of ROO- compounds on the surface of water microdroplets surrounded by alcohol… read more here.

Keywords: water; water microdroplets; organic peroxides; alcohol ... See more keywords