نتایج جستجو برای: layered double hydroxides ldhs
تعداد نتایج: 272292 فیلتر نتایج به سال:
In this paper, the inexpensive 4,4-diaminostilbene-2,2-disulfonate (DAS) and 4,4-dinitro-stilbene-2,2- disulfonate (DNS) anions with arbitrary molar ratios were successfully co-intercalated into Zn2Al-layered double hydroxides (LDHs). The DAS(50%)-DNS/LDHs composite exhibited the broad UV-visible light absorption and fluorescence quenching, which was a direct indication of photo-induced electro...
This work summarizes the beneficial and harmful effects of layered double hydroxides upon human health. Their possible uses in pharmaceutical formulations are present in many subjects: from classical applications as orally and topical drugs to new trends as cancer therapy. The application of layered double hydroxides as excipients and their influence on the bioavailability of the organic active...
The effects of transition metals on the hydrophobicity of nano–structured layered double hydroxides (LDHs) and the compatibility of LDHs/ethylene vinyl acetate (EVA) composites have seldom been reported. NiMgAl–LDHs slightly surface–modified with stearate and doped with transition metal cations (Mn2+, Co2+, Cu2+, Zn2+) are investigated. Compared to the pure EVA, not only were the maximal degrad...
Low-overpotential layered hydroxides (LDHs) with high theoretical capacity are promising electrodes for supercapaterry and oxygen evolution reaction; however, the low electronic conductivity insufficient active sites of bulk LDHs increase internal resistance reduce oxygen-production efficiency electrodes. Herein, we prepared a polyaniline-coated NiCo-layered double hydroxide intercalated MoO42?...
Atomically dispersed catalytic metal sites anchored on N-doped carbon support catalysts (M-N-C) show great prospects for CO2 electroreduction. Here, single-layer NiZn layered double hydroxides (NiZn-LDHs) was used as a sacrificial assistant to fabricate single-Ni atom ultrathin porous catalyst. NiZn-LDHs were exfoliated by polyhydroxy compounds which took the resource in Ni-N-C, and single laye...
In this work the ability of Zn2-xCuxCr-CO3 layered double hydroxides (LDHs) as highly efficient DeNOx photocatalysts was studied. LDHs with x = 0, 0.2 and 0.4 were prepared using a coprecipitation method. The samples characterized by different techniques such XRD, XPS, FT-IR, ICP-MS, TG, SBET, SEM Diffuse reflectance (DR). increased amount copper ions in LDH layers gave rise to slight changes s...
Reasonable design of a kind non-noble metal catalyst with high catalytic performance, good stability and low cost is great significance to realize the overall water splitting. Herein, bottom-up method proposed synthesize NiFe layered double hydroxides (NiFe LDHs) coated sulfide/phosphide heterostructure on nickel foam (Ni3S2-NixPy/NF@NiFe LDH) through hydrothermal combined electrodeposition. Lo...
Abstract In this study, gadolinium (Gd) doped MgAl layered double hydroxides (LDHs) were synthesized via a ‘bottom-up’ method and fully characterized by X-ray diffraction, infrared spectroscopy relaxivity measurements. Two cytotoxic agents then intercalated ion-exchange. diffraction patterns exhibit expanded interlayer spacings as result of successful drug intercalation. Infrared spectra also s...
Due to their high surface area, electronic properties, energy storage performance and catalytic activity, two-dimensional (2D) nanostructures have attracted significant interest great attention in developing science. Layered double hydroxides (LDHs) belong 2D a very important physicochemical biological activity. However, there has always been doping enhance improve these unique especially photo...
The fast development of the world civilization is continuously based on huge energy consumption. extra-consumption fossil fuel (petroleum, coal, and gas) in past decades has caused several political environmental crises. Accordingly, world, especially scientific community, should discover alternative sources to safe-guard our future from severe climate changes. Hydrogen ideal carrier, where nan...
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