نتایج جستجو برای: layered double hydroxides ldhs

تعداد نتایج: 272292  

Journal: :Chemical Engineering Journal 2021

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) ...

Journal: :International Journal of Hydrogen Energy 2023

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...

2014
Gareth R. Williams Kaat Fierens Stephen G. Preston Daniel Lunn Oliwia Rysnik Sofie De Prijck Mirjam Kool Hannah C. Buckley Bart N. Lambrecht Dermot O’Hare Jonathan M. Austyn

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...

Journal: :Chinese Journal of Catalysis 2022

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),...

Journal: :Catalysts 2021

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 ...

Journal: :Dalton transactions 2016
Yanqi Xu Weimin Xuan Mengmeng Zhang Haralampos N Miras Yu-Fei Song

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...

2016
Lili Wang Miaojun Xu Baoli Shi

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...

2015
Zhi-Bo Zhang Qiang Lu Xiao-Ning Ye Wen-Tao Li Bin Hu

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...

Journal: :Zhongguo kexue 2021

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...

Journal: :Cell reports physical science 2021

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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