Topic
Acetone
About: Acetone is a research topic. Over the lifetime, 9458 publications have been published within this topic receiving 120867 citations. The topic is also known as: propanone & dimethylketone.
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TL;DR: Acetone, one of the principal ketone bodies elevated during treatment with the ketogenic diet, exhibits anticonvulsant properties that may contribute to the seizure protection conferred by the diet.
Abstract: Acetone, the principal ketone body elevated during the ketogenic diet (KD), has anticonvulsant activity and may contribute to the seizure protection conferred by the diet. The anticonvulsant mechan...
56 citations
TL;DR: In this article, a gas sensor based on ZnFe2O4 double-shell microspheres was used for detecting acetone in the presence of a small amount of acetone.
Abstract: Porous ZnFe2O4 double-shell, york-shell, and solid microspheres are synthesized using a combination of hydrothermal method and thermal treatment (carried out at appropriate temperature determined via gravimetry). The specific surface area is varied by adopting different heating rates during the thermal treatment; double-walled structure is formed at higher heating rates. Gas sensors based on ZnFe2O4 double-shell microspheres showed a promising response (when compared to york-shell and solid microspheres), when tested with ∼20 ppm acetone (Rair/Rgas = 13.6). There is little or no response to interferential gases, including ethanol, methanol, xylene, toluene, benzene, carbon monoxide, hydrogen sulfide and nitrogen dioxide. The gas sensor showed an almost linear response to acetone concentration and a low detection limit for acetone of 0.13 ppm (making it compliant with analytic requirements for acetone-threat or diabetes-breathalyzer tests). The observed gas sensing performance (includes response time ∼6–10 s at 206 °C operating temperature and good cyclability) suggests that the ZnFe2O4 double-shell microspheres presented here are prospective sensing materials for acetone detection.
56 citations
TL;DR: In this paper, the solubility of α-, β-, and γ-glycine in aqueous solutions containing methanol, ethanol, 2-propanol, or acetone were measured at 310 K.
Abstract: The solubilities of α-, β-, and γ-glycine in aqueous solutions containing methanol, ethanol, 2-propanol, or acetone were measured at 310 K. The solubility of all the polymorphs dropped rapidly as a function of the concentration of antisolvent. The solubility of the glycine polymorphs in water−antisolvent mixtures was, in decreasing order: methanol > ethanol > 2-propanol > acetone. The solubility of α-glycine was slightly higher than that of γ-glycine, but the solubility of β-glycine was significantly higher by up to 17 %. The induction time for the recrystallization of β- to α-glycine in those water−antisolvent mixtures was, in decreasing order: methanol > ethanol > acetone > 2-propanol. This signifies that the selection of an antisolvent for preparation of β-glycine can have an important effect on the product.
55 citations
TL;DR: Controlled batch experiments performed with Clostridium acetobutylicum show that methyl viologen induces solvent production at near neutral pH.
Abstract: Controlled batch experiments performed withClostridium acetobutylicum show that methyl viologen induces solvent production at near neutral pH. At a pH of 6.8, significant ethanol production was observed in presence of methyl viologen. At pH 5, production of butanol and ethanol are favored at the expense of acetone.
55 citations
TL;DR: In this article, two dimensional p-type MoS2 nanosheets are introduced on the surface of P-type ZnO derived from metal-organic frameworks (MOFs) to produce ZNO@MoS2 core/shell heterojunctions as a novel acetone sensor, showing a great enhancement of acetone response.
Abstract: It is imperative to explore an accurate ppb-level acetone sensor for noninvasive detection of diabetes. In this work, two dimensional p-type MoS2 nanosheets are introduced on the surface of p-type ZnO derived from metal-organic frameworks (MOFs) to produce ZnO@MoS2 core/shell heterojunctions as a novel acetone sensor, showing a great enhancement of acetone response, about two orders of magnitude than that of pure ZnO derived from MOFs. For example, the ZnO@MoS2 exhibits about 80 times enhancement in response to 100 ppb acetone than that of pure ZnO. More importantly, this ZnO@MoS2 heterojunctions sensor exhibits an ultra-fast response/recovery to ultra-low concentration acetone (60 s/40 s @ 5 ppb), which is the best acetone sensing performance for the metal oxide-based materials reported to date. Moreover, the acetone sensing performances are negligibly affected by humidity and other gas, which is suitable for exhaled acetone detection. Finally, it is elucidated that the sharp increase of negative heterojunction interface resistance, ultra-fast gas diffusion rates in MoS2 nanosheets and strong interaction energy are key factors for the excellent acetone sensing properties of ZnO@MoS2. This work opens up a novel and efficient way for ultra-low concentration gas detection.
55 citations