Article
Chemistry, Multidisciplinary
Xuan Zhang, Siyuan Wang, Eric C. Apel, Rebecca H. Schwantes, Rebecca S. Hornbrook, Alan J. Hills, Kate E. DeMarsh, Zeyi Moo, John Ortega, William H. Brune, Roy L. Mauldin, Christopher A. Cantrell, Alexander P. Teng, Donald R. Blake, Teresa Campos, Bruce Daube, Louisa K. Emmons, Samuel R. Hall, Kirk Ullmann, Steven C. Wofsy, Paul O. Wennberg, Geoffrey S. Tyndall, John J. Orlando
Summary: The reactive chemistry of isoprene has a significant impact on the composition and cleansing capacity of the global atmosphere, especially in environments with low levels of nitrogen oxides. Through experiments and measurements, it has been discovered that the oxidation mechanism of isoprene plays a crucial role in the cycling of radicals and the formation of ozone and organic aerosols in the atmosphere.
Article
Chemistry, Physical
Burcu Karagoz, Roman Tsyshevsky, Lena Trotochaud, Yi Yu, Osman Karslioglu, Monika Blum, Bryan Eichhorn, Hendrik Bluhm, Maija M. Kuklja, Ashley R. Head
Summary: This study investigated the interaction mechanisms between NO2 and MoO3 and CuO surfaces, revealing their impact in gas filtration and sensing applications. The results suggest that NO2 removes hydroxyl and O-vac binding sites on the surfaces of these materials when used in gas filtration and sensing applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Engineering, Environmental
Yuchen Wang, Ivan R. Piletic, Masayuki Takeuchi, Tianchang Xu, Stefan France, Nga Lee Ng
Summary: The study synthesized seven monoterpene-derived ONs and investigated their hydrolysis in bulk solutions at different pH values. The results showed that the hydrolysis lifetimes were related to alkyl substitution numbers, functional groups, and carbon skeletons. Tertiary and secondary ONs hydrolyzed via an acid-catalyzed unimolecular mechanism, while primary ONs showed a competition of unimolecular and bimolecular mechanisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Sophia M. Charan, Yuanlong Huang, Reina S. Buenconsejo, Qi Li, David R. Cocker, John H. Seinfeld
Summary: Decamethylcyclopentasiloxane (D5) is a chemical compound commonly used in personal care products. Its concentration outdoors and indoors is correlated to population density. The formation of secondary organic aerosol (SOA) from the oxidation of D5 is highly dependent on the concentration or exposure of hydroxyl radicals (OH).
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Rinipal Kaur, Vlad Sadtchenko
Summary: This study investigated the sublimation kinetics of ice films with different thicknesses using a simple and fast scanning calorimetry technique. The results showed that the mass accommodation coefficient of water by ice is unity and temperature-independent within the temperature range of the study.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Rinipal Kaur, Vlad Sadtchenko
Summary: This study investigates the sublimation kinetics of ice films at different temperatures and thicknesses using a simple and accurate calorimetry technique. The results show that the mass accommodation coefficient of water by ice is unity and independent of temperature within the studied range. These findings are significant for the computational and theoretical research on aqueous interfaces.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Petri Clusius, Carlton Xavier, Lukas Pichelstorfer, Putian Zhou, Tinja Olenius, Pontus Roldin, Michael Boy
Summary: ARCA box is a zero-dimensional model focusing on atmospheric chemistry and submicron aerosol processes, with a comprehensive graphical user interface and customizable features. It is an invaluable tool for atmospheric scientists to understand complex atmospheric aerosol processes.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
Article
Environmental Sciences
Peter Mettke, Anke Mutzel, Olaf Boege, Hartmut Herrmann
Summary: This study presents an improved synthetic access to hydroxy hydroperoxides derived from isoprene and oc-pinene. The structures of the products were elucidated using spectroscopy techniques, and the atmospheric photolysis rate of 1,2-ISOPOOH was calculated. The synthesized hydroxy hydroperoxides were investigated using online MS techniques, and calibration factors were determined.
Article
Chemistry, Physical
Douglas de Souza Goncalves, Angsula Ghosh, Puspitapallab Chaudhuri
Summary: Methanesulfonic acid (MSA) has been found to form strong hydrogen-bonded interactions with sulfuric acid (H2SO4) under ambient conditions, which is relevant in atmospheric aerosol formation. Through detailed quantum-chemical calculations and spectroscopic analysis, it has been observed that hydrogen bonds between MSA and H2SO4 exhibit partial covalent character as the hydrogen-bond lengths decrease.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Polymer Science
Junfang Shen, Derong Zhu, Junchao An, Zhiyu Min, Jingbo Chen
Summary: The ordered structure of partially melted iPP was studied using POM and SAXS/WAXS measurements, showing that the surviving ordered structure could relocate and grow into cylindrical nanocrystals. The memory effect of melt was observed during quiescent crystallization from the partially melted sample, indicating a significant influence on crystallization morphology and kinetics.
Article
Chemistry, Multidisciplinary
Nicoline C. Frederiks, Danika D. Heaney, John J. Kreinbihl, Christopher J. Johnson
Summary: Ammonia, iodic acid, and iodine pentoxide can form clusters containing ammonia. Ammonia plays a crucial role in proton transfer and acts as a template for the formation of halogen and covalent bonds. A covalent anion was observed in the two largest clusters.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Pavani Cherukupally, Wei Sun, Daryl R. Williams, Geoffrey A. Ozin, Amy M. Bilton
Summary: This study demonstrates the feasibility of using thermosetting polyurethane-nanosilicon sponges to reclaim emulsified oily wastewater at high temperatures. By melting wax crystallites in the crude oil, the removal efficiency of the sponge was increased, and the adsorbed oil was extracted using Heptol. These results suggest that thermoset polymers are promising high-temperature sorbents for reclaiming fracking effluents and achieving Net-Zero goals in the oil industry.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Jing Chen, Joseph R. Lane, Henrik G. Kjaergaard
Summary: The atmospheric oxidation of dimethyl sulfide and other emitted sulfur species can lead to the formation of different sulfur-centered radicals. We performed computational investigations on the reactions of these radicals with peroxy radicals. The results show that certain sulfur-centered radicals form short-lived peroxide intermediates, while others form stable peroxide products. The valence of the sulfur atom plays a crucial role in determining the reaction outcome.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Chemistry, Physical
Marko Malinovic, Paul Paciok, Ezra Shanli Koh, Moritz Geuss, Jisik Choi, Philipp Pfeifer, Jan Philipp Hofmann, Daniel Goehl, Marc Heggen, Serhiy Cherevko, Marc Ledendecker
Summary: In this study, a precise control over the size of structurally ordered iridium oxide nanoparticles is achieved during high-temperature thermal treatment by utilizing a silica nanoreactor as a hard template. This approach maintains high durability while avoiding the common problem of reduced surface area and altered particle morphology.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Arthi Ravi, Syed Zahid Hassan, Subhrajyoti Bhandary, Kana M. Sureshan
Summary: In this study, a rigid inositol-derived monomer functionalized with azide and alkyne was used for regiospecific and quantitative topochemical azide-alkyne cycloaddition (TAAC) polymerization in crystalline polymorphs. The study highlights the caution of overreliance on topochemical postulates for predicting reactivity at high temperatures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)