Electro- and Photocatalytic Generation of H Using a Distinctive Co "PN P" Pincer Supported Complex with Water or Saturated Saline as a Hydrogen Source. | LitMetric
Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA.
Published: November 2017
AI Article Synopsis
Article Abstract
Efficient electrocatalytic production of H from mixed water/acetonitrile solutions was achieved using three new Co complexes supported by the neutral pincer ligand bis(diphenylphosphino)-2,6-di(methylamino)pyridine ("PN P"). At -1.9 V vs. Fc/Fc , these catalysts showed 96 % Faradaic efficiency with added water or saturated aqueous saline at rates of up to 316 L(mol cat) (cm ) h using a glassy carbon working electrode. The complex [Co(κ -2,6-{Ph PNMe} (NC H )Br ] (1) was also able to photocatalytically reduce water to hydrogen in the presence of a Ru(bpy) photosensitizer and a reductant.
Objective: To explore the differences in fat and fatty acids content between freshwater and saltwater fish.
Methods: The fat and fatty acids content in 83 fish meat samples from four regions(Hainan, Jiangsu, Fujian, and Guangxi) were detected by national standard method. Mann-Whitney U tests and t-tests were used to compare the differences in fat and major fatty acid content between freshwater and saltwater fish.
Contamination of heavy metals (HMs) has caused increasing concern due to their ecological toxicities and difficulties in degradation. The transport, retention, and release of HMs in porous media are highly related to their environmental fate and risk to groundwater. Column transport experiments and numerical simulations were conducted to investigate the retention and release behaviors of Cu, Pb, Cd, and Zn in the presence and absence of kaolin under varying ionic strengths and cation types.
The Zincke reaction and Birch reduction have been one of the few reactions that allow for ring opening of pyridines ever since the discovery of pyridine more than a century ago. This paper presents a new addition to the list of pyridine ring-opening reactions, reductive Zincke reaction, which affords saturated δ-amino ketones. Under the catalysis of a simple rhodium complex, pyridinium salts with diverse substituents are reduced with formic acid, ring-opened with water, transaminated with a secondary amine and further reduced to afford a wide range of δ-amino ketones, including those in which the alkane chain of the ketones is selectively deuterated or fluorinated.
Background: The aim of this study is to investigate the effect of soil water stability on maize (Zea mays L.) yield, water use, and its photosynthetic physiological mechanisms, and to innovate the relationship between maize and soil water, which currently only considers soil water content and neglects soil water stability.
Methods: An organized water experiment was conducted on maize.
Applied Biophysics and Food Research Center (Centro de Investigaciones en Biofísica Aplicada y Alimentos, CIBAAL, National University of Santiago del Estero and CONICET), RN 9 - Km 1125, 4206 Santiago del Estero, Argentina. Electronic address:
In this work, the effects of L- Arginine (L-Arg) insertion on saturated and unsaturated lipid membranes were assessed by fluorescence spectroscopy, dynamic light scattering (DLS) and monolayer measurements. The studied systems were composed by DPPC, 16:0 DietherPC, 16:1 Δ9-CisPC, DPPC:Chol, 16:1 Δ9-CisPC:Chol, and 16:1 Δ9-CisPC:DPPC in the presence of increasing concentrations of L-Arg. The information obtained using fluorescence spectral Laurdan properties indicates that L- Arg produces a decrease in the polarizability of saturated lipids congruent with the increase in vesicle size and area per lipid.
