Cu and Fe oxides dispersed on SBA-15: A Fenton type bimetallic catalyst for N,N -diethyl- p -phenyl diamine degradation

Karthikeyan, S.; Pachamuthu, Muthusamy Poomalai; Isaacs, Mark A.; Kumar, Santosh; Lee, Adam F.; Sekaran, G.

doi:10.1016/j.apcatb.2016.06.040

Cited by 123 publications

(61 citation statements)

References 53 publications

(70 reference statements)

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“…Figure 1 displays the low-angle X-ray diffraction (XRD) patterns for 0.2%Pd/SBA-15 (b) catalyst and 0.2%Pd-x%Ni/SBA-15 (c-e) samples. All samples and the SBA-15 support exhibited typical (100), (110), (200) diffractions at 2θ of 0.5-2 • , which was associated with the highly ordered hexagonal space group p6 structure of the SBA-15 host [38,39]. In addition, the result showed that the highly ordered hexagonal mesoporous structure of SBA-15 remained unchanged with the impregnation of Pd and Ni particles.…”

Section: Resultssupporting

confidence: 53%

Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde

et al. 2018

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Abstract:A series of Pd-Ni bimetallic catalysts supported on SBA-15 (0.2%Pd-x%Ni/SBA-15, x = 0.4, 0.7, and 1.2) were prepared through the impregnation method combined with the NaBH 4 reduction method. X-ray diffraction (XRD), N 2 adsorption-desorption, X-ray photoemission spectroscopy (XPS) and transmission electron microscope (TEM) were used to characterize the prepared catalysts. All the synthesized catalysts were evaluated for the liquid-phase hydrogenation of cinnamaldehyde (CAL). The addition of Ni obviously enhanced the CAL conversion and selectivity of C=C hydrogenation to hydrocinnamaldehyde (HALD) over the 0.2%Pd-x%Ni/SBA-15 catalysts. Meanwhile, 0.2%Pd-1.2%Ni/SBA-15 showed the best performance with 96.3% conversion and 87.8% selectivity toward HALD. This improvement was attributed to the synergistic effect between the Pd and Ni nanoparticles, enhancing the dispersion of Pd metal particles and increasing the content of surface Pd 0 species. In addition, the influences of a few reaction factors including H 2 pressure, reaction temperature, and reaction time were studied over 0.2%Pd-1.2%Ni/SBA-15.

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Section: Resultssupporting

confidence: 53%

Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde

et al. 2018

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“…Organic dyes are often used in textile, printing, and photographic industries, and a sizable fraction of these are lost during the dying process into effluent wastewater streams. Even low concentrations of such dyes pose serious risks to human and animal health, and their bio-or chemical degradation is challenging [216,217], hence the development advanced oxidation processes (AOPs) to treat contaminated drinking ground and surface waters, and wastewaters containing toxic or non-biodegradable compounds are sought [218,219]. Semiconductor photocatalysis offer an effective and economic approach to the treatment of recalcitrant organic compounds at low concentrations in wastewater [220][221][222][223].…”

Section: Environmental Remediationmentioning

confidence: 99%

g-C3N4-Based Nanomaterials for Visible Light-Driven Photocatalysis

2018

Self Cite

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Graphitic carbon nitride (g-C 3 N 4 ) is a promising material for photocatalytic applications such as solar fuels production through CO 2 reduction and water splitting, and environmental remediation through the degradation of organic pollutants. This promise reflects the advantageous photophysical properties of g-C 3 N 4 nanostructures, notably high surface area, quantum efficiency, interfacial charge separation and transport, and ease of modification through either composite formation or the incorporation of desirable surface functionalities. Here, we review recent progress in the synthesis and photocatalytic applications of diverse g-C 3 N 4 nanostructured materials, and highlight the physical basis underpinning their performance for each application. Potential new architectures, such as hierarchical or composite g-C 3 N 4 nanostructures, that may offer further performance enhancements in solar energy harvesting and conversion are also outlined.

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“…Among all the available approaches, Fenton reaction as a typical advanced oxidation process (AOP) is especially promising and powerful because it does not require special equipment or energy input. [1][2][3] Most importantly, the highly aggressive free hydroxyl radical (˙OH) produced in the reaction can rapidly destruct various organic compounds. 3,4 As shown in .…”

Section: Introductionmentioning

confidence: 99%

Galvanic-like cells produced by negative charge nonuniformity of lattice oxygen on d-TiCuAl–SiO₂ nanospheres for enhancement of Fenton-catalytic efficiency

Lyu

Zhang

2016

Environ. Sci.: Nano

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An efficient Fenton-type nano-catalyst consisting of Cu, Ti and Al lattice-doped dandelion-like silica nanospheres (d-TiCuAl-SiO 2 Ns) was successfully prepared via a hydrothermal process for the first time. The lattice substitution of Cu, Ti and Al for Si initiated a higher and a lower electron density of the lattice O 2− around the lattice Cu and near the lattice Ti & Al, respectively, through the higher electronegativity of Cu on the basis of extended X-ray absorption fine structure, X-ray photoelectron spectroscopy, Fouriertransform infrared spectroscopy, cyclic voltammetry and electron paramagnetic resonance measurement.Thus, countless surface galvanic-like cells formed between the electron-rich Cu center (cathode) and the electron-deficient Ti and Al region (anode) on the nanospheres, enhancing the selective adsorption of H 2 O 2 on d-TiCuAl-SiO 2 Ns. This kind of surface structure facilitated the reduction of H 2 O 2 to˙OH at the cathode and induced the oxidation of organic radical intermediates (˙R) on the anode through the delivery of the electron of˙R to the cathode during the Fenton reaction, which resulted in almost all of the energy of H 2 O 2 being applied to the degradation of pollutants. Therefore, d-TiCuAl-SiO 2 Ns were highly effective and stable for persistent contaminant degradation at neutral pH values, which was ∼10 times higher than that of the conventional Fenton catalysts. Moreover, the utilization efficiency of H 2 O 2 has been maintained at a very high level throughout the Fenton reaction. Our findings indicated that the special surface design of nanoparticles could be applied toward the improvement of Fenton reaction efficiency and utilization of H 2 O 2 .

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Cu and Fe oxides dispersed on SBA-15: A Fenton type bimetallic catalyst for N,N -diethyl- p -phenyl diamine degradation

Cited by 123 publications

References 53 publications

Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde

Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde

g-C3N4-Based Nanomaterials for Visible Light-Driven Photocatalysis

Galvanic-like cells produced by negative charge nonuniformity of lattice oxygen on d-TiCuAl–SiO₂ nanospheres for enhancement of Fenton-catalytic efficiency

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Cu and Fe oxides dispersed on SBA-15: A Fenton type bimetallic catalyst for N,N -diethyl- p -phenyl diamine degradation

Cited by 123 publications

References 53 publications

Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde

Improvement Effect of Ni to Pd-Ni/SBA-15 Catalyst for Selective Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde

g-C3N4-Based Nanomaterials for Visible Light-Driven Photocatalysis

Galvanic-like cells produced by negative charge nonuniformity of lattice oxygen on d-TiCuAl–SiO2 nanospheres for enhancement of Fenton-catalytic efficiency

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Product

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Galvanic-like cells produced by negative charge nonuniformity of lattice oxygen on d-TiCuAl–SiO₂ nanospheres for enhancement of Fenton-catalytic efficiency