نتایج جستجو برای: layered double hydroxides

تعداد نتایج: 272164  

2009
P Nalawade

Combination of two-dimensional layered materials and intercalation technique offers a new area for developing nanohybrids with desired functionality. Layered double hydroxides (LDHs) are mineral and synthetic materials with positively charged brucite type layers of mixed metal hydroxides. Exchangeable anions located in interlayer spaces compensate for positive charge of brucite type layer. Sinc...

2016
Bullo Saifullah Mohamed Ezzat El Zowalaty Palanisamy Arulselvan Sharida Fakurazi Thomas J Webster Benjamin Mahler Geilich Mohd Zobir Hussein

The chemotherapy for tuberculosis (TB) is complicated by its long-term treatment, its frequent drug dosing, and the adverse effects of anti-TB drugs. In this study, we have developed two nanocomposites (A and B) by intercalating the anti-TB drug isoniazid (INH) into Zn/Al-layered double hydroxides. The average size of the nanocomposites was found to bê164 nm. The efficacy of the Zn/Al-layered d...

2010
Ye Kuang Lina Zhao Shuai Zhang Fazhi Zhang Mingdong Dong Sailong Xu

Layered double hydroxides (LDHs), also well-known as hydrotalcite-like layered clays, have been widely investigated in the fields of catalysts and catalyst support, anion exchanger, electrical and optical functional materials, flame retardants and nanoadditives. This feature article focuses on the progress in micro-/nanostructured LDHs in terms of morphology, and also on the preparations, appli...

Journal: :Chemical communications 2012
Souad Touati Hela Mansouri Abdelkader Bengueddach André de Roy Claude Forano Vanessa Prevot

Aerogels of layered double hydroxides were prepared by a simple and eco-friendly method involving a quick coprecipitation followed by supercritical CO(2) drying. Such aerogels display high surface areas and enhanced adsorption behavior.

Strecker reaction is one of the simplest multicomponent reactions. It used for synthesis of chiral α-amino nitriles. This reaction was carried out in the presence of catalytic amount of layered double hydroxides (LDHs). In this study, simple and practical method for the synthesis of this class of catalysts is provided. The results shown that LDH is the good heterogen catalyst for synthesis of c...

Journal: :Chemical communications 2003
Boyapati M Choudary Chinta Reddy V Reddy Billakanti V Prakash Mannepalli L Kantam B Sreedhar

Osmate-exchanged Mg-Al layered double hydroxides catalysed the delivery of two oxygen atoms simultaneously via a 3 + 1 cycloaddition to sulfide to form sulfone directly for the first time, reminiscent of 3 + 2 cycloaddition in asymmetric dihydroxylation reactions.

ژورنال: بهداشت و توسعه 2019
Hossein Panahi, Ayat , Kamranifar, Mohamad , Khodadadi, Maryam ,

Background: Antibiotics and their metabolites are known as dangerous non-degradable substances that potentially remain after the wastewater treatment process. Therefore, it is necessary to remove these compounds from aqueous solutions. This study aimed to use layered double nano-hydroxides to remove carbamazepine, cephalexin, and ciprofloxacin.   Methods: In this experimental study the charact...

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