Activating anionic redox chemistry in layered oxide cathodes is a paradigmatic approach to devise high-energy sodium-ion batteries. Unfortunately, excessive oxygen redox usually induces irreversible lattice oxygen loss and cation migration, resulting in rapid capacity and voltage fading and sluggish reaction kinetics. Herein, the reductive …
The oxidation mechanism and chemical structure model of GO were proposed by analyzing the evolution of the functional groups with oxidation proceeded based on thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy.
Metal oxide nanoparticles (MONPs), one of the main members of nanomaterials, have been applied in various fields, such as food, medicine, cosmetics, and sensors. This review highlights the bio-toxic effects of widely applied MONPs and their underlying mechanisms.
TLR4 activation confers a potent cardiac protection against ischemia-reperfusion injury via a MyD88-dependent, but Trif-independent, mechanism. iNOS/sGC are essential for the TLR4-induced cardiac protection.
There is also considerable pharmacological interest in developing selective inhibitors of the several isoforms of nitric oxide synthase. The recently determined crystal structures of complexes between nitric oxide synthase and substrate, the mechanisms of the enzymatic reaction that generate nitric oxide and chemical precedents and models for ...
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Our main objective is to dope PK on ZnONPs to reduced zinc-oxide toxicity but increased anti-bacterial and anti-biofilms activity. In present study, we showed that, functions of zinc oxide nanoparticles with pancreatin enzyme (ZnONPs-PK) have anti-bacterial, anti-biofilms, anti-motility and anti-virulence properties against MRSA.
The scope and relationship of these mechanisms are clarified. In addition, this review selects four strategies for enhancing the gas sensing properties of metal oxide semiconductors and analyses the gas sensing mechanisms to highlight the importance of the gas sensing mechanism. Finally, some perspectives for future investigations on …
This review highlights the available studies on the enzymatic characteristics and catalytic mechanisms of natural enzymes and artificial metal and metal-oxide nanozymes in the removal and transformation of R-OH.
Hafnium oxide has many polytypes that are stable in different temperature and pressure regimes. At room temperature and pressure, a centrosymmetric monoclinic phase (space group P 2 1 / c) is stable.
Semantic Scholar extracted view of "Memory effect induced the enhancement of uranium (VI) immobilization on low-cost MgAl-double oxide: Mechanism insight and resources recovery." by Meiqing Chen et al.
We report herein a novel mechanism, unraveled by proteomics and validated by in vitro and in vivo studies, of the aberrant aging-associated upregulation of ovarian transferrin and ferritin in rat ovaries. The ovarian mass and serum estradiol titer plummeted while the ovarian labile ferrous iron and …
A facile oxidative heterocyclization of commercially available amines and tert-butyl nitrite with alkynes or alkenes leading to isoxazoles or isoxazolines is described. The unprecedented strategy of the oxidation of an amine directly to a nitrile oxide was used in this cyclization process. This reaction is highly efficient, regiospecific, operationally …
The mechanism of oxidizing reaction in the preparation of graphene oxide (GO) by a chemical oxidation method remains unclear. The main oxidant of graphite oxide has not been determined. Here, we show a new mechanism in which Mn2O7, the main oxidant, is heated to decompose oxygen atoms and react with graphite. The whole …
Zirconium oxide (zirconia) consists of a polycrystalline biphasic (tetragonal and monoclinic) structure. The tetragonal phase of pure zirconia exists in an unstable state, which is why stabilisation, e.g. with yttrium, is performed (Y-TZP: yttrium stabilised zirconia). The tetragonal phase of Y-TZP is stable at room temperature, but unstable at ...
This manuscript presents the amino acid mediated functionalization and reduction of graphene oxide (GO) using an environmentally friendly method producing N-doped graphene. The reduction of GO by 2-aminoisobutyric acid (AIB) and glycine occurs efficiently under both acidic and mild basic pH conditio
Download scientific diagram | Mechanism of NBR cross-linking using sulfur and zinc oxide. from publication: In Situ Dynamic Vulcanization of Poly (Vinyl Chloride)/Acrylonitrile-butadiene Rubber ...
1 Interdepartmental Program in Medicinal Chemistry, College of Pharmacy, University of Michigan Medical School, Ann Arbor 48109-1065. Nitric oxide synthase structure and mechanism
Nitrous oxide is an inhalatory gas used as an adjunct to improve oxygenation and reduce the need for extracorporeal membrane oxygenation in certain neonates with hypoxic respiratory failure. Nitrous oxide, commonly known as "laughing gas", is a chemical compound with the chemical formula N2O.
Mechanism of Nitric Oxide Synthase. Evidence that Direct Hydrogen Atom Abstraction from the O−H Bond of NG-Hydroxyarginine Is Not Relevant to the Mechanism
Here we manipulate and ultimately engineer the device structure to reveal that the mechanism for TiO 2 switching is the shunting and recovery of the metal/oxide interfacial electronic barrier ...
Variations of the experimental conditions including capping molecules, precursor monomer concentration, and reaction temperature/aging have been explored to control the shape of the oxide nanoparticles in wet-chemistry syntheses. The different capping molecule-assisted synthetic methods of the hydro-solvothermal route, the two …
Homogeneous colloidal dispersions of nitrogen-doped graphene in N,N-dimethyformamide (DMF) were readily prepared through a facile hydrazine-assisted solvothermal reduction method. The reduced graphene oxide (RGO) sample, prepared at a weight ratio of hydrazine to graphene oxide (GO) of 1.4 : 1 at 180 °C, was
However, the precise mechanisms involved in hypoxia stress remain to be clarified. Pro-inflammatory cytokines including interleukin 1beta (IL-1beta) induce a gene expression of inducible nitric oxide synthase (iNOS) and produce nitric oxide, which exerts either a cytoprotective or toxic effect.
Memory effect induced the enhancement of uranium (VI) immobilization on low-cost MgAl-double oxide: Mechanism insight and resources recovery
The propensity towards platelet-rich thrombus formation increases substantially during normal ageing, and this trend is mediated by decreases in platelet responsiveness to the anti-aggregatory nitric oxide (NO) and prostacyclin (PGI2) pathways. The impairment of soluble guanylate cyclase …
Abstract. Nitric oxide (NO) is a pivotal signaling messenger in the cardiovascular system. NO participates in regulatory functions including control of hemostasis, fibrinolysis, platelet and leukocyte interactions with the arterial wall, regulation of vascular tone, proliferation of vascular smooth muscle cells, and homeostasis of blood pressure.
Herein, we report the enhancement of the activity and stability of acidic OER on Co 3 O 4 by doping a small amount of Mo (∼0.5 wt%). The oxygen vacancies are created by doping Mo to activate the lattice oxygen followed by etching away from the lattice, effectively promoting the fast oxide path mechanism (OPM) for the OER.
A leading proposal for the mechanism of this intense electron pairing is that, while hole doping destroys magnetic order, it preserves pair-forming superexchange interactions governed by the charge-transfer energy scale E.
Antibacterial activity of zinc oxide nanoparticles (ZnO-NPs) has received significant interest worldwide particularly by the implementation of nanotechnology to synthesize particles in the nanometer region. Many …
