نتایج جستجو برای: layered double hydroxides ldhs

تعداد نتایج: 272292  

2014
Bullo Saifullah Palanisamy Arulselvan Mohamed Ezzat El Zowalaty Sharida Fakurazi Thomas J Webster Benjamin M Geilich Mohd Zobir Hussein

The primary challenge in finding a treatment for tuberculosis (TB) is patient non-compliance to treatment due to long treatment duration, high dosing frequency, and adverse effects of anti-TB drugs. This study reports on the development of a nanodelivery system that intercalates the anti-TB drug isoniazid into Mg/Al layered double hydroxides (LDHs). Isoniazid was found to be released in a susta...

Journal: :Catalysts 2023

In this work, a novel method for the preparation of high-entropy oxides (HEO) was successfully developed using multivariate composition layered double hydroxides (LDHs) as precursor. Thermal treatment over 600 °C led to complete transformation LDHs single spinel phase HEOs. The performance obtained HEO catalysts in removal volatile organic compounds (VOCs) studied with catalytic oxidation tolue...

ژورنال: سلامت و محیط زیست 2017

Background and Objective: Phosphorus (P), as one of the agricultural, industrial and urban wastewater pollutants, plays an important role in eutrophication of surface waters. Use of cationic sorbents for removal of anions including phosphate from aqueous environments is a well-known and effective method. Meanwhile, layered double hydroxides (LDHs) are known as effective anion exchange sorbents....

2008
Savita Gupta D D Agarwal Susanta Banerjee

Layered double hydroxides (LDH) are considered as a new emerging class of PVC stabilizers to replace toxic and environmentally hazardous class of heavy metals. A new series of Ca-Al-X (X=NO3 , CO3 , Cl, SO4 , PO4 ) hydrotalcites have been prepared by hydrothermal process. The hydrotalcite particles are nanosized and have been characterized by EDX, XRD, FTIR and TGA techniques. A comparative stu...

2008
Calistor Nyambo Ponusa Songtipya E. Manias Maria M. Jimenez-Gasco Charles A. Wilkie

Alkyl carboxylate-modified layered double hydroxides (LDH) were prepared and used as nanofillers for poly(methyl methacrylate) (PMMA) and polystyrene (PS). The LDH intercalated with long-chain linear alkyl carboxylates (CH3(CH2)nCOO , n 1⁄4 8, 10, 12, 14, 16, 20) were prepared via anionic exchange of MgAl–nitrate, showing a systematic increase in basal spacing with longer alkyls. MgAl–undecenoa...

2006
J. Plank Z. Dai P. R. Andres

The synthesis and characterization of composite materials based on calcium–aluminum layered double hydroxides (Ca–Al-LDHs), intercalated with organic polycarboxylate (PC) polymers, is described. The PC polymers, which exhibit a “comb-like” architecture, contain ethylene oxide side chains of different lengths. They are intercalated between the cationic Ca–Al–OH-layers when tricalcium aluminate i...

2016
EDUARD RADU CERNEI ADAM MAXIM DANA CRISTIANA MAXIM RADU BOGDAN MAVRU GEORGETA ZEGAN Grigore T. Popa

Hybrid nanostructures based on amoxicilin – hydrotalcite type anionic clays were synthesized by using coprecipitation and reconstruction of initial structure as synthesis methods. Scanning electron microscopy (SEM) technique and nitrogen adsorption-desorption isotherms was used to describe textural characteristics of the obtained hybrids. The plate let morphology defines the texture of the iron...

2017
Feng Li Jinrong Liang Wenxi Zhu Hua Song Keliang Wang Cuiqin Li

A series of ZnMgNiAl layered double hydroxides (LDHs) containing 20 wt.% Ni and different Zn/Mg molar ratios were prepared by a coprecipitation method, and then were introduced with H2PO4 via a microwave-hydrothermal method. With the resulting mixtures as the precursors, Zn/Mg-modified ZnMgNi–P/Al2O3 catalysts were prepared. The Zn/Mg molar ratio affected the formation of Ni2P and Ni12P5 in nic...

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