Facile synthesis and novel electrocatalytic performance of nanostructured Ni–Al layered double hydroxide/carbon nanotube composites

Wang, Hui; Xiang, Xu; Li, Feng

doi:10.1039/b924911g

Cited by 144 publications

(100 citation statements)

References 68 publications

(19 reference statements)

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“…The relation between the peak current density obtained from forward scan and v 1/2 is shown in Figure 6 (B). There is a linear relationship with a high correlation coefficient (R 2 >0.97) between peak current density and square root of scan rate, implying that the methanol oxidation is typically under diffusion control [57][58][59][60]. Moreover, Figure 7.…”

Section: Electrocatalytic Characterizationmentioning

confidence: 99%

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Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Habibi

Ghaderi

2016

Bull. Chem. React. Eng. Catal.

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In this study, Ni-Al layered double hydroxide (LDH)-Pt nanoparticles (PtNPs) as an inorganic nanocomposite was electrosynthesized on the glassy carbon electrode (GCE) by a facile and fast two-step electrochemical process. Structure and physicochemical properties of PtNPs/Ni-Al LDH/GCE were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectrometry and electrochemical methods. Then, electrocatalytic and stability characterizations of the PtNPs/Ni-Al LDH/GCE for methanol oxidation in alkaline media were investigated in detail by cyclic voltammetry, chronoamperometry, and chronopotentiometry measurements. PtNPs/Ni-Al LDH/GCE exhibited higher electrocatalytic activity than PtNPs/GCE and Ni-Al LDH/GCE. Also, the resulted chronoamperograms indicated that the PtNPs/Ni-Al LDH/GCE has a better stability.

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Section: Electrocatalytic Characterizationmentioning

confidence: 99%

“…The role of OH − ion in the oxidation of methanol has been discussed at various Ni containing species modified electrodes [38][39][40][41]53,55,[60][61][62]. The effect of NaOH concentration on the methanol oxidation at the PtNPs/Ni-Al LDH/GCE was investigated.…”

Section: Electrocatalytic Characterizationmentioning

confidence: 99%

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Habibi

Ghaderi

2016

Bull. Chem. React. Eng. Catal.

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“…Various methods have been explored to overcome these problems, such as the combination of LDH with carbon nanofibers [14] and carbon nanotubes [15][16][17][18][19][20], as previously studied in our group [21]. Among the nanocarbons, the 2D geometry of graphene oxide (GO) is obviously compatible with the layered structure of LDHs and there is also a charge compatibility between the positively charged LDH and negatively charged GO.…”

Section: Introductionmentioning

confidence: 99%

Graphene-oxide-supported CuAl and CoAl layered double hydroxides as enhanced catalysts for carbon-carbon coupling via Ullmann reaction

Ahmed

Menzel

Wang

et al. 2017

Journal of Solid State Chemistry

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Two efficient catalyst based on CuAl and CoAl layered double hydroxides (LDHs) supported on graphene oxide (GO) for the carbon-carbon coupling (Classic Ullmann Homocoupling Reaction) are reported. The pure and hybrid materials were synthesised by direct precipitation of the LDH nanoparticles onto GO, followed by a chemical, structural and physical characterization by electron microscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), surface area measurements, X-ray photoelectron spectroscopy (XPS) and temperature programmed reduction (TPR). The GO-supported and unsupported CuAl-LDH and CoAl-LDH hybrids were tested over the Classic Ullman Homocoupling Reaction of iodobenzene. In the current study CuAl-and CoAl-LDHs have shown excellent yields (91% and 98%, respectively) at very short reaction times (25 min). GO provides a light-weight, charge complementary and two-dimensional material that interacts effectively with the 2D LDHs, in turn enhancing the stability of LDH. As a result, the recyclability of the heterogeneous catalyst systems is greatly enhanced. After 5 re-use cycles, the catalytic activity of the LDH/GO hybrid is up to 2 times higher than for the unsupported LDH.

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“…The temperature of maximum degradation for each step is taken as Tmax. The RGO-LDH exhibits three distinct steps of weight loss: The first weight loss from 100 to 300 °C corresponds to the release of water adsorbed and intercalated in the RGO-LDH; the second step takes place in the temperature range from 300 to 500 °C, attributed to the dehydroxylation of the LDH layers and removal of CO2 from the interlayer carbonate anions [29]; at high temperature (500-700 °C), different reactions occur: the weight loss in nitrogen is ascribed to the reduction of Ni 2+ to Ni 0 by carbon, while in air it may result from the combustion of the RGO skeleton [30]. The dispersion state and interfacial interaction are considered to be the controlling factors that affect various properties of polymer composites.…”

Section: Resultsmentioning

confidence: 99%

Co-precipitation synthesis of reduced graphene oxide/NiAl-layered double hydroxide hybrid and its application in flame retarding poly(methyl methacrylate)

Nie

Song

Wang

et al. 2014

Materials Research Bulletin

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A reduced graphene oxide/NiAl-layered double hydroxide (RGO-LDH) was synthesized through a simple co-precipitation route. NiAl-layered double hydroxide (NiAl-LDH) nanoparticles were homogeneously dispersed on the reduced graphene oxide (RGO) nanosheets, which were simultaneously reduced during the process. RGO-LDH exhibited three steps of weight loss, leaving high residue. RGO-LDH was then solution blended into poly(methyl methacrylate) (PMMA) to investigate its effect on reducing flammability of the composite. With the incorporation of RGO-LDH, the thermal stability of PMMA composite was improved. Moreover, RGO-LDH endowed PMMA with the largest reduction in the heat release rate, smoke production and CO production rate relative to RGO or NiAl-LDH alone. RGO-LDH could decrease the production of volatiles including hydrocarbons, carbonyl compounds and epoxy compounds from the PMMA composite. The improved flame retardancy was ascribed to the combined effect of the physical barrier of RGO and the catalytic carbonization of NiAl-LDH.

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Facile synthesis and novel electrocatalytic performance of nanostructured Ni–Al layered double hydroxide/carbon nanotube composites

Cited by 144 publications

References 68 publications

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Graphene-oxide-supported CuAl and CoAl layered double hydroxides as enhanced catalysts for carbon-carbon coupling via Ullmann reaction

Co-precipitation synthesis of reduced graphene oxide/NiAl-layered double hydroxide hybrid and its application in flame retarding poly(methyl methacrylate)

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