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Investigation of the Photocatalytic Activity of Copper-Modified Commercial Titania (P25) in the Process of Carbon Dioxide Photoreduction.
Materials (Basel)
December 2024
Department of Inorganic Chemical Technology and Environment Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Pułaskiego 10, 70-322 Szczecin, Poland.
The photocatalytic reduction of CO to useful products is an area of active research because it shows a potential to be an efficient tool for mitigating climate change. This work investigated the modification of titania with copper(II) nitrate and its impact on improving the CO reduction efficiency in a gas-phase batch photoreactor under UV-Vis irradiation. The investigated photocatalysts were prepared by treating P25-copper(II) nitrate suspensions (with various Cu concentrations), alkalized with ammonia water, in a microwave-assisted solvothermal reactor.
View Article and Find Full Text PDFSuperatoms as Superior Catalysts: ZrO versus Pd.
Small
January 2025
Department of Physics, Virginia Commonwealth University, Richmond, VA, 23284-2000, USA.
Single-atom catalysts are the focus of studies for over a decade due to their enhanced reactivity at smaller sizes. However, they have limitations as they offer only one active site, which may not be sufficient for reactions requiring the co-adsorption of multiple reactants. Additionally, atoms can migrate on a substrate and coalesce, resulting in decreased reactivity.
View Article and Find Full Text PDFCorrelation of physicochemical properties with antioxidant activity in phenol and thiophenol analogues.
Sci Rep
January 2025
Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA.
Oxidative stress, associated with excessive production of reactive oxygen and nitrogen species (ROS, RNS), contributes to the development and progression of many ailments, such as aging, cardiovascular diseases, Alzheimer's disease, Parkinson's disease, diabetes, cancer, preeclampsia or multiple sclerosis. While phenols and polyphenols are the most studied antioxidants structurally similar compounds such as anilines or thiophenols are sporadically analyzed despite their radical scavenging potential. This work assesses the impact of structural features of phenols and thiophenols on their antioxidant activity.
View Article and Find Full Text PDFStudy on Fluidity and Deposition Characteristics of Air-Containing Filling Slurry.
ACS Omega
December 2024
Norin Mining Limited, Beijing 100053, China.
With the continuous exploitation of global mineral resources, backfill technology for gob areas has become a crucial aspect of mine safety and sustainable development. As a primary method of gob area backfill, slurry backfill directly relates its flow properties and filling height to the efficiency and safety of mine extraction. To enhance the flow properties of the slurry and increase its filling height, a research study on the flow and deposition characteristics of a gas-containing filling slurry was conducted using a combination of theoretical analysis, laboratory experiments, and field tests.
View Article and Find Full Text PDFIodine Activation from Iodate Reduction in Aqueous Films via Photocatalyzed and Dark Reactions.
ACS Earth Space Chem
December 2024
Department of Chemistry, University of Colorado Boulder Boulder, Colorado 80309, United States.
Iodine in the atmosphere destroys ozone and can nucleate particles by formation of iodic acid, HIO. Recent field observations suggest iodate recycles from particles sustaining significant gas-phase IO radical concentrations (0.06 pptv) in aged stratospheric air, and in elevated dust plumes.
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