NiAl layered double hydroxides (LDHs) are promising bifunctional catalysts comprising tunable redox and Lewis acidic sites. However, most studies of LDH employ alkali hydroxide carbonate precipitants which may contaminate the final catalyst leach into reaction media. Here, we report an alkali-free route to prepare NixAl LDHs with a composition range x = 1.7 4.1 using (NH4)2CO3 NH4OH as precipit...

Microwave-hydrothermal treatment (MWHT), a modification of conventional hydro thermal treatment, has been used during post-treatment of different layered double hydroxides (LDHs). In some cases, microwaves (MWs) have been used simultaneously with urea hydrolysis or for reconstruction of the LDH structure. The main advantages of replacing the conventional furnaces by MW ovens are a noticeable re...

In the presented work, possibility of direct synthesis LDH (layered double hydroxide) on AZ91 surface in presence a chelating agent (diethylenetriaminepentaacetic acid - DTPA) is reported. Conversion layer nanocontainers were formed under ambient pressure conditions without carbonate addition electrolyte. The obtained was characterized using experimental (SEM, XRD, TGA, XPS, Raman, etc.) and co...

The interlamellar spacing of layered double hydroxides (LDHs) was enlarged by dodecyl sulfonate ions firstly, and then, (3-aminopropyl)triethoxysilane (APS) was chemically grafted (APS/LDHs). The structural characteristics and thermal stability of these prepared samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), reflectance Fourier transform infrared ...

Research and development of packaging materials and packaging technology have shown a clear and irreversible trend toward “green” and active packaging. Recent studies on packaging materials have emphasized the use of biobased materials in conjunction with nanotechnology. Hence, in present study we explored a concept of using bionanohybrids and their composites with biobased polymer for active p...

We report a biomorphic hierarchical mixed metal oxide (MMO) framework through a biotemplated synthesis method. A uniform Al(2)O(3) coating was deposited on the surface of the biotemplate with an atomic layer deposition (ALD) process, and the film of ZnAl-layered double hydroxide (ZnAl-LDH), which faithfully inherits the surface structure of the biotemplate, was prepared by an in situ growth tec...

The synthesis of the copper-poor and aluminum-rich layered double hydroxides (LDHs) CuAl4 type was optimized in detail this work, by applying an intense mechanochemical treatment to activate gibbsite starting reagent. phase-pure forms these LDHs were prepared for first time; using copper nitrate perchlorate salts during syntheses turned out be key avoiding formation hydroxide sideproducts. Base...

An anionic clay, magnesium–aluminum layered double hydroxide (Mg2Al–NO3–LDH), was prepared by a co-precipitation method and intercalated with poly(oxypropylene)–amindocarboxylic acid (POP– amido acid). Depending on the POP-intercalating agents with molecular weight at 2000 or 400 g/mol, the intercalated LDHs were analyzed to have d spacing of 6.8 or 2.7 nm and organic incorporation of 80 and 55...