نتایج جستجو برای: layered double hydroxides ldhs
تعداد نتایج: 272292 فیلتر نتایج به سال:
In this work, we report a bifunctional electrocatalyst with nickel sulphide (Ni3S2) as the template, vertical graphene (VG) bridging material, and nickel–cobalt layered double hydroxides (NiCo LDHs) nanosheets active catalyst. The hybrid Ni3S2/[email protected] LDHs catalyst exhibits excellent activity in alkaline solution for both OER (overpotential ~ 320 mV at current density of 100 mA cm?2) ...
Ni–Co layered double-hydroxides (LDHs), with their lamellar morphology, and higher number of active sites, ensure efficient charge transfer. This makes them extremely useful for catalytic applications. The reported bimetallic LDH can acts as an catalyst hydrogenation p-nitrophenol, a toxic carcinogenic pollutant commonly found in industrial wastewater. In addition to showing the high performanc...
There is currently no paradigm in immunology that enables an accurate prediction of how the immune system will respond to any given agent. Here we show that the immunological responses induced by members of a broad class of inorganic crystalline materials are controlled purely by their physicochemical properties in a highly predictable manner. We show that structurally and chemically homogeneou...
Exploring highly efficient electrochemical water splitting catalysts has recently attracted extensive research interest from both fundamental researches and practical applications. Transition metal-based layered double hydroxides (LDHs) have been proved to be one of the most materials for oxygen evolution reaction (OER), however, still suffered low conductivity sluggish kinetics hydrogen (HER),...
Biomass fast pyrolysis oil is a potential renewable alternative to fossil fuels, but its viability constrained by corrosiveness, low higher heating value and instability, caused high oxygenate concentrations. A few studies have outlined layered double hydroxides (LDHs) as possible catalysts for the improvement of biomass characteristics. In this study, goal was reduce concentration oxygen-rich ...
Deep desulfurization is a challenging task and global efforts are focused on the development of new approaches for the reduction of sulfur-containing compounds in fuel oils. In this work, we have proposed a new design strategy for the development of deep desulfurization heterogeneous catalysts. Based on the adopted design strategy, a novel composite material of polyoxometalate (POM)-based ionic...
A new intumescent flame-retardants (IFR) system including the charing-foaming agent (CFA), ammonium polyphosphate (APP) and modified-layered double hydroxides (LDHs) with different transition metals (Ni, Co, Cu) were used in the ethylene vinyl acetate (EVA) matrix. Both the limiting oxygen index and the vertical burning tests indicate that the CFA/APP system and LDHs have significant synergisti...
Zinc-aluminium layered double oxide (Zn-Al-LDO) catalysts derived from layered double hydroxides (LDHs) were prepared and used for the catalytic fast pyrolysis of cellulose to selectively produce 1-hydroxy-3,6dioxabicyclo[3.2.1]octan-2-one (LAC), which is a valuable anhydrosugar derivative. Analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments were performed to invest...
Fenton reaction utilizes the catalytic of H2O2 and Fe2+ to generate highly active hydroxyl radicals (·OH) quickly degrade organic compounds without secondary pollution by-products, which is widely used in fields environmental protection sewage treatment. However, difficulty regeneration low-valence metals ordinary homogeneous Fenton limits efficien...
Phase transformation from layered double hydroxides (LDHs) into mixed metal oxides (MMOs) has been widely used in various catalytic applications owing to its numerous advantages over conventional synthesis methods. Herein we report the results of selective phase LDHs spinels and delafossites for preparation phase-pure MMO catalysts. Pure cuprous cupric were selectively obtained through heat tre...
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