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Sustainable catalysts in a short time: harnessing bacteria for swift palladium nanoparticle production.
Nanoscale
January 2025
Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Pr. 47, Moscow 119991, Russia.
Adapting biological systems for nanoparticle synthesis opens an orthogonal Green direction in nanoscience by reducing the reliance on harsh chemicals and energy-intensive procedures. This study addresses the challenge of efficient catalyst preparation for organic synthesis, focusing on the rapid formation of palladium (Pd) nanoparticles using bacterial cells as a renewable and eco-friendly support. The preparation of catalytically active nanoparticles on the bacterium VKM B-3302 represents a more suitable approach to increase the reaction efficiency due to its resistance to metal salts.
View Article and Find Full Text PDFDioxazolones as electrophilic amide sources in copper-catalyzed and -mediated transformations.
Beilstein J Org Chem
January 2025
Department of Chemistry, Dong-A University, Busan 49315, South Korea.
Over the past decade, dioxazolones have been widely used as -acylamide sources in amidation processes of challenging substrates, typically employing precious transition metals. However, these catalytic systems often present several challenges associated with cost, toxicity, stability, and recyclability. Among the 3d transition metals, copper catalysts have been gaining increasing attention owing to their abundance, cost-effectiveness, and sustainability.
View Article and Find Full Text PDFMetal-organic frameworks-derived CaO/ZnO composites as stable catalysts for biodiesel production from soybean oil at room temperature.
Sci Rep
January 2025
Department of Chemistry, Catalysis Division, University of Isfahan, Isfahan, 81746-73441, Iran.
Biodiesel presents a sustainable alternative to fossil fuels, yet traditional homogeneous catalysts like sodium and potassium hydroxide face challenges with separation and reuse. Calcium oxide (CaO) is an effective heterogeneous catalyst for biodiesel production, but its chemical instability under reaction conditions restricts its long-term performance. This study introduces MOF-mediated synthesis (MOFMS) of heterogeneous catalysts, specifically CaO@ZnO and ZnO@CaO nanocomposites, from inexpensive and non-toxic metal salts and linkers in water.
View Article and Find Full Text PDFMutual solubility of ammonium perrhenate in solutions containing ammonium salts.
Sci Rep
January 2025
Department of Chemical Engineering and Process Design, Faculty of Chemistry, Silesian University of Technology, Ul. Ks. M. Strzody 7, 44-100, Gliwice, Poland.
Mutual solubility measurements were carried out for three multi-component systems of ammonium perrhenate (NHReO) and one of the ammonium salts (NHNO, NHCl or (NH)SO) dissolved in water. Experiments were carried out using the isothermal solution saturation method at 293.15K.
View Article and Find Full Text PDFToxic metal contamination in edible salts and its attributed human health risks: a systematic review and meta-analysis.
Environ Sci Pollut Res Int
January 2025
Occupational Environment Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
Sodium chloride, commonly referred to as table salt, is the most widely utilized seasoning in culinary applications. Nevertheless, the most of oral salts used contain impurities. Arsenic (As), mercury (Hg), cadmium (Cd), and lead (Pb) are the most common impurities found in salt.
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