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Showing 1 to 20 of 20 for “"water reduction"”.
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Investigation Of New Ligand Architechtures Towards Proton And Water Reduction Catalysis By Cobalt Complexes
… absence of any aromatic rings make this complex water soluble which is an added advantage. Additionally, this complex exhibited excellent catalytic properties in water with low onset overpotential and high turnover number. We developed similar redox-active π-acceptor pentadentate …
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New Polyazine-Bridged Ru(II),Rh(III) and Ru(II),Rh(I) Supramolecular Photocatalysts for Water Reduction to Hydrogen Applicable for Solar Energy Conversion and Mechanistic Investigation of the Photocatalytic Cycle
… supramolecular photocatalysts for water reduction to H2 and provide mechanistic insights into the catalytic cycle. Two member of a new RuII,RhIII motifs with only one Rh-'Cl bond, [(bpy)2Ru(dpp)RhCl(tpy)](PF6)4 ( bpy = 2,2'-bipyridine, tpy = 2,2':6,2"-terpyridine) and …
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Modification of Excited State Behavior with Ligand Substitution in Ru(II),Rh(III) Bimetallic Supramolecular Complexes
… the rate of chloride loss upon electrochemical reduction, facilitating catalytic water reduction. The electronic properties of the terminal ligand also impact the photophysical properties of the molecule. The excited state lifetime of the complex with a dcmbpy terminal ligand was 93 ns while the …
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Synthesis and process optimization of colloidal unimolecular polymer, cup, particle formation, and its interfacial surface tension behavior
… acrylic co-polymers using the process of water reduction. The formation of CUP particles was driven by the polymer-polymer interactions being greater than polymer-solvent interactions as well as the charge-charge repulsion due to the increasing dielectric of the medium. CUPs provide a …
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Can trade effluent charges promote compliance and address water security risks in Nairobi’s manufacturing industries?
… charges could promote compliance and address water security risks in manufacturing industries in Nairobi. This is due to the burden of effluent management that Nairobi City Water and Sewerage Company (NCWSC), the largest water supply and sewerage Company in Nairobi, has been having in the …
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Water splitting for hydrogen and syngas production over a novel bi-layer perovskite membrane
… and investigate its performance for water thermochemical reduction. In this bi-layer membrane configuration, LaO.8 SrO.2 Cro9.5 Co0.05 (LSCC) is exposed to the feed side (high oxygen potential side) and LaO.8 SrO.2 CoO3 (LSCo) is chosen for the sweep side (low oxygen potential side). …
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Capsid catalysis : de novo enzymes on viral proteins
… greater catalytic efficacy in DMSO than in water. Reduction-oxidation activity is subsequently developed via heme and copper cofactors. Heme-phage complexes oxidize multiple peroxidase substrates in a pH-dependent manner. The same phage clone also binds copper(II) and oxidizes a catechol …
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Dynamics of heavy metals in reedbeds along the banks of the river Scheldt
… regularly subjected to flooding by high salinity water. In the deeper sediment layers, sulphides also seem to play an important role in the metal accumulation. An increased salinity increases the metal mobility in oxidised sediment layers in the brackish part of the estuary. This was mainly …
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Solar-driven overall water splitting on CoO nanoparticles : first-principles density functional theory studies
Photoelectrochemical (PEC) water splitting has been suggested as a promising techinique for large-scale hydrogen fuel production. In particular, spontaneous photocatalytic overall water splitting on self-standing particles in water without external driving potential has been highlighted as a clean …
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Ultrasonic Microscopy Analysis of Corrosion -- A Nondestructive Evaluation of Paint Weathering Effects <i>and</i> Synthesis and Characterization of Nanoscale Water-reducible Polymer Particles
… coatings would be discussed. The use of water-borne coatings has been growing fast because of the concern of healthy environments. In our studies, nanoscale water reducible acrylic copolymers (PMMA-MAA) with zero volatile organic compound (VOC) were synthesized and characterized. Five …
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Determining the water footprint of tomato and butternut production towards enhanced water security at Nwanedi irrigation scheme
Declining underground water, unpredictable rainfall patterns and high temperatures pose a threat to future food and water security. Water security is also threatened by the growing demand for water in the agriculture sector to meet food needs. Knowing the water footprint and total water consumed by …
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Improving Photocatalytic Hydrogen Production of Ru,Rh,Ru Supramolecular Complexes in Aerobic Aqueous Solutions
The production of hydrogen fuel via solar water splitting is an important carbon-neutral strategy for the development of renewable resources and has sparked great interest in the scientific community. Hydrogen production efficiencies for supramolecular photocatalysts of the architecture …
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Redox-active materials for electrochemically-mediated separations
… in chemical production, as well as potable water generation and environmental remediation. The rising intensity of global issues such as the growing world population, low water security, and worsening industrial pollution all necessitate further advancement in the discovery, development, and …
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Framework and Analytics for Emissions Forecasting and Planning
… to achieving 100% carbon neutrality, 40% water reduction, and 75% waste reduction relative to its 2019 baseline by 2027. To help reach these goals, Amgen has taken a science-based approach and has assembled a Sustainability Analytics Team to develop tools based on analytical insights that …
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Optimizing oil production in horizontal wells (water/oil cresting in horizontal wells)
… to increasing volumes of effluent(s) (unwanted water and or gas) produced with oil over time as well as the overall recovery efficiency of oil reservoirs. Production optimization from crest-affected thick- and thin-oil rim homogeneous reservoirs were investigated experimentally by considering …
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Investigating best management practices to reduce selenium and nitrate contamination in a regional scale irrigated agricultural groundwater system: Lower Arkansas River Valley, southeastern Colorado
… the LARV now faces challenges of soil salinity, water logging from shallow groundwater tables, and a high concentration of selenium (Se, both within the alluvial aquifer system and within the Arkansas River and its tributaries). Se originates primarily from bedrock and outcropped marine shale, …
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Towards efficient water utilisation in South African Higher Education Institutions: A case study of University of Venda
Water scarcity has become a constraint for sustainable development in the higher education institutions in South Africa including University of Venda. Water infrastructure is one of the major challenges within higher education institutions, the existing water supply infrastructure is over 20 years …
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Role of cement content in determining resistance of concrete to reinforcement corrosion
… literature shows that at fixed w/c ratio, cement reduction is not detrimental to fresh and hardened concrete properties and may improve performance in some cases. However, cement content variations (in some cases) are relatively small and do not cover an adequate range around the specified minimum …
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Light energy management in peach: utilization, photoprotection , photodamage and recovery. Maximizing light absorption in orchard is not always the best solution
… (Non Photochemical Quenching), moving electrons (water-water cycle , cyclic transport around PSI, glutathione-ascorbate cycle and photorespiration) and scavenging the generated reactive species. The price plants must pay for this equipment is the use of CO2 and reducing power with a consequent …