Oxygen reduction

Ebook "Advanced electrocatalysts for low-temperature fuel cells" introduces the reader to the state of the art in nanostructured anode and cathode electrocatalysts for low-temperature acid and alkaline fuel cells. It explores the electrocatalysis of anode (oxidation of organic molecules) and cathode (oxygen reduction) reactions. It also offers insights into metal-carbon interactions, correlating them with the catalytic activity of the electrochemical reactions.

318p tracanhphuonghoa1007 22-04-2024 3 2   Download

Ebook "Chalcogenide materials for energy conversion: Pathways to oxygen and hydrogen reactions" addresses electrocatalysis based on chalcogenides, particularly in the nanoscale domain. Special attention is paid to the hydrogen evolution reaction (HER) and the oxygen reduction reaction (ORR). The book provides an introduction to materials synthesis; the basic principles of electrocatalysis; related precious metal versus non-precious metal catalytic center chalcogenides as well as supports; and the role of such supports in stabilizing the catalytic centers.

234p tracanhphuonghoa1007 22-04-2024 7 3   Download

Ebook "Nanomaterials for fuel cell catalysis" provide an authoritative source of information on the use of electrochemical fuel cells, and in particular discuss the use of nanomaterials to enhance the performance of existing energy systems. The book covers the state of the art in the design, preparation, and engineering of nanoscale functional materials as effective catalysts for fuel cell chemistry, highlights recent progress in electrocatalysis at both fuel cell anode and cathode, and details perspectives and challenges in future research.

583p tracanhphuonghoa1007 22-04-2024 6 3   Download

Ebook "Electrochemistry of N4 macrocyclic metal complexes - Volume 1: Energy (Second edition)" describes the state of the art regarding molecular catalysts such as MN4 metal complexes, like porphyrins and phthalocyanines. This volume focuses on the particular case of the electrocatalysis of the reduction of O2 for practical applications in fuel cells and air batteries. Indeed, active and stable materials have been developed in the last 5 years where MN4 catalytic systems can be obtained by the pyrolysis of starting materials that do not necessarily involve MN4 complexes.

325p tudohanhtau1006 29-03-2024 2 2   Download

Ebook "Electrochemistry in ionic liquids - Volume 2: Applications" covers the following applications: electrodeposition and electroless deposition, voltammetry of adhered microparticles, electrochemistry of organic and organometallic compounds, electrocatalytic reactions, oxygen reduction reaction, ionic liquids in surface protection and lubrication, current industrial application of ionic liquids, and finally challenges, issues, and recycling methods of ionic liquids in industrial settings.

279p tudohanhtau1006 29-03-2024 7 1   Download

Ebook "Hydrolysis, oxidation and reduction (Catalysts for fine chemical synthesis, Volume 1)" to be a practical help for advanced undergraduate, graduate and postgraduate students, as well as experienced chemists in industry and academia working in organic and organometallic synthesis. The procedure section contains a wide variety of synthetic protocols, such as epoxidations of unsaturated ketones and esters, asymmetric reductions of carbon-oxygen double bonds, asymmetric hydrogenations of carbon-carbon double bonds and other types of reaction.

235p coduathanh1122 27-03-2024 5 1   Download

Ebook "C–X bond formation (Topics in organometallic chemistry, Volume 31)" were undoubtedly among the first experiments performed by synthetic organic chemists. With years, this area of research has matured and nowadays relies heavily on the use of transition metals. Most of the recent research in C–X bond-forming reactions has been focused on the late transition metal-catalyzed formation of aryl-nitrogen and aryl-oxygen bonds, reactions of primary importance to the pharmaceutical industry.

198p manmanthanhla0201 26-02-2024 3 1   Download

The graphene oxide (GO) loaded spiky gold (AuNS) nanocomposites were prepared by electrostatic interaction between negatively-charged GO nanosheets and positively-charged AuNS by the assistance of chitosan as linker molecules. The AuNS/GO nanocomposites exhibit a red-shift in the extinction spectra and a reduction in the zeta potential compared to those of the pristine AuNS due to the presence of oxygen-containing functional groups in GO.

7p vimichaelfaraday 28-12-2023 5 3   Download

La(CoCuO3) nanoperovskites have been prepared by the mechano-synthesis method and treated with hydrogen to yield a high dispersion of bimetallic CoeCu sites. This article is to present a way for the preparation of metals supported catalysts for the conversion of carbon monoxide into oxygenated compounds.

6p viberbers 09-08-2023 7 3   Download

The objectives of this study were to prove the control of the lake water quality in terms of turbidity, total suspended solid (TSS), chemical oxygen demand (COD), and number of the algal cells by using the Riplox-based chemical complex (including (Ca(NO3)2) and (FeCl3) at concentrations ranging from 5 mM to 50 mM, with the presence of CuSO4 4 mg/L), considering the effects of the chemical fraction, the chemical concentration, and the treatment time.

8p vimalfoy 08-02-2023 3 2   Download

The Six-Transmembrane Epithelial Antigen of the Prostate 1 (STEAP1) is an integral membrane protein involved in cellular communications, in the stimulation of cell proliferation by increasing Reactive Oxygen Species levels, and in the transmembrane-electron transport and reduction of extracellular metal-ion complexes.

11p vironald 15-12-2022 7 2   Download

In addition, the effect of La1-xSrxCoO3 powders on the photocatalytic degradation of methylene blue and CO2 reduction reaction under UV light source was also investigated. The results showed a maximum photocatalytic degradation of methylene blue 30 ppm could be achieved with a degradation degree of 11.32% by La0.6Sr0.4CoO3 synthesized at 850oC for 4h (LSC64-850) in UV light for 150 min.

4p vijaguar 16-11-2022 11 1   Download

Mechanical ventilation is a well–known trigger for lung inflammation. Research focuses on tidal volume reduction to prevent ventilator-induced lung injury. Mechanical ventilation is usually applied with higher than physiological oxygen fractions.

7p viisaacnewton 26-04-2022 4 1   Download

The bacterial isolates formed the basis of a consortium represented by 1:1 proportion and exhibited ability to reduce biological oxygen demand of the petrochemical wastewater by 88% under immobilized condition in laboratory. Response surface methodology-based optimization revealed a reduction of 93.33% biological oxygen demand within 12 h from simulated wastewater at 37◦C which had a starting concentration of 400 mg L− 1 of toluene.

15p thebadguys 15-01-2022 6 0   Download

These mononuclear Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) complexes of the ligand were prepared and their structures were proposed by elemental analysis, and infrared and ultraviolet-visible spectroscopy; the proton NMR spectrum of the mbH ligand was also recorded. The azo-azomethine ligand, mbH, behaves as a bidentate ligand coordinating through the nitrogen atom of the azomethine (–CH=N–) and the oxygen atom of the phenolic group. Elemental analyses indicated that the metal:ligand ratio was 1:2 in the metal chelates.

20p langthannam 29-12-2021 7 0   Download

The prepared materials were characterized by using BET, TGA, XRD, and TEM techniques. Cyclic voltammetry was used in order to determine the electrocatalytic activity of the prepared catalyst for hydrogen oxidation and oxygen reduction reactions that occur in proton exchange membrane fuel cells (PEMFCs). The Pt loading obtained over the composite material was around 10%. TEM results showed highly dispersed and small nanoparticles over the composite material by using scCO2 deposition.

8p langthannam 29-12-2021 5 0   Download

In this study, two indigenous Chlorella strains were evaluated for triacylglycerol (TAG) production and related parameters during 10 days of N-deprivation. The strains were identified based on morphological characteristics and genomic information, named as Chlorella sp. IMU12 and Chlorella sp. IMU17. Time-dependent reduction of growth was accompanied by decreased chlorophyll content, reduced oxygen evolution ratio, and elevated carotenoid content of both strains cultivated in N-free Bold’s basal medium.

10p tudichquannguyet 29-11-2021 12 2   Download

Enhanced electrocatalytic reduction of oxygen is achieved using Pt nanoparticle-modified copper phthalocyanine-multiwalled carbon nanotube (PtNPs/CuPc-CNT) composite film on a glassy carbon electrode (PtNPs/CuPcCNT/GCE). The PtNPs/CuPc-CNT/GCE surface is characterized by scanning electron microscopy, transmission electron microscopy, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. The electrocatalytic activity of composite electrodes in the oxygen reduction reaction is investigated by cyclic voltammetry and rotating-disk electrode measurements.

16p tudichquannguyet 29-11-2021 7 1   Download

This study reports the effect of vanadium on the crystal structure and electrical and electrochemical properties of La0.6−x VxSr0.4MnO3−δ (x = 0.005–0.1) perovskite-based cathode materials in solid oxide fuel cells. Crystal structure, morphology, and porosity of prepared cathode materials are characterized by X-ray diffraction, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy. Using XPS analysis it was established that the La3+ cation is exchanged by the V4+/5+ cation in the perovskite structure.

31p tudichquannguyet 29-11-2021 10 1   Download

Oxygen toxicity is one potential side effect of hyperbaric oxygen therapy (HBOT). Previous small studies showed mild reductions in pulmonary functions reflecting reductions in small airway conductance after repetitive hyperbaric oxygen sessions.

6p vimaine2711 26-03-2021 5 2   Download