Synthesis of Nickel Nanoparticles Supported on Carbon Using a Filter Paper as Biomorphic Pattern for Application in Catalysis

Galetti, Agustín E.; Barroso, Mariana N.; Μοnzόn, A.; Abello, M. Cristina

doi:10.1590/1516-1439.023115

Cited by 3 publications

(4 citation statements)

References 28 publications

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“…Thus, the search for new highly selective catalysts under mild conditions is required 3 . Among the materials with potential application for catalysis are nanomaterials, such as nanotubes, nanoribbons, nanowires that exhibit unique properties, such as, changes in chemical reactivity and electrical conductivity 11,12 , which, combined, are not found in conventional materials 13 . Recent studies showed that titanate nanotubes have Brönsted and Lewis acid sites 14 formed from lattice distortion due to the scrolling of titanate nanotubes layers.…”

Section: Introductionmentioning

confidence: 99%

Titanate Nanotubes as New Nanostrutured Catalyst for Depolymerization of PET by Glycolysis Reaction

et al. 2017

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The final destination of PET packaging is creating economic and environmental concerns. One of the alternatives to minimize this problem would be making use of chemical recycling of this material through glycolysis with the aim to produce bis(hydroxiethyl) terephthalate, BHET monomer. This reaction is well known, but it still presents problems as BHET purity since it makes necessary the development of new catalysts highly selective. In this context, the present work studied the catalytic activity of a nanostructured material, titanate nanotubes (TNT), and compared it to a commercial catalyst (zinc acetate), which is the most used for this glycolysis reaction according to literature researches, and analyzed the influence of PET type (virgin and post-consumer) in the depolymerization for reaction times of 2, 3 and 4 hours. Using TNT as catalyst, BHET production yield and values of turnover number for the evaluated reaction times were higher than the results using Zn(OAc) 2 for virgin PET, proving itself as a promising catalyst.

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Section: Introductionmentioning

confidence: 99%

Titanate Nanotubes as New Nanostrutured Catalyst for Depolymerization of PET by Glycolysis Reaction

et al. 2017

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“…Similar broadened peaks of Ni were observed when activated carbon was used as the support. 37 In addition, the presence of Pd in the composite was indicated by diffraction peaks at 38.4 and 68.0° corresponding to the (111) and (220) lattice planes of the Pd nanoparticles. 38 Notably, Pd also produces a prominent peak around the 2 θ value of 45° depicting the lattice plane of (200), although it cannot be observed in the FTIR spectra, which probably may be due to the overlapping peak of Ni.…”

Section: Resultsmentioning

confidence: 99%

Efficient algal lipid extraction via a green bio-electro-Fenton process and its conversion into biofuel and bioelectricity with concurrent wastewater treatment in a photosynthetic microbial fuel cell

Das¹,

Raj²,

Ghangrekar³

2023

Green Chem.

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“…Thus, the Co-Cu/ArDC sample, Figure 2b, contains a larger amount of small metal nanoparticles (<5 nm), while the quantity of the small particles is significantly lower for the Ni-based catalyst. The catalyst synthesis method used here determines the porous structure of the carbonaceous support developed and therefore the metallic particle size distribution [36,48]. If the microporosity of the support formed is very high, as in the case of the Co-Cu, a large fraction of the smaller metallic nanoparticles is confined to the internal structure of these micropores, remaining embedded inside the carbon matrix.…”

Section: Influence Of Reaction Temperaturementioning

confidence: 99%

“…In addition, these small nanoparticles are less active to catalyze the formation of the CNTs. Therefore, these results give the clue for the optimization of the metallic particle size distribution of the catalyst, which is determined by the duration and the final temperature used during the thermal decomposition stage [36,48,54,55].…”

Section: Influence Of Feed Compositionmentioning

confidence: 99%

Hydrogen and CNT Production by Methane Cracking Using Ni–Cu and Co–Cu Catalysts Supported on Argan-Derived Carbon

et al. 2022

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The 21st century arrived with global growth of energy demand caused by population and standard of living increases. In this context, a suitable alternative to produce COx-free H2 is the catalytic decomposition of methane (CDM), which also allows for obtaining high-value-added carbonaceous nanomaterials (CNMs), such as carbon nanotubes (CNTs). This work presents the results obtained in the co-production of COx-free hydrogen and CNTs by CDM using Ni–Cu and Co–Cu catalysts supported on carbon derived from Argan (Argania spinosa) shell (ArDC). The results show that the operation at 900 °C and a feed-ratio CH4:H2 = 2 with the Ni–Cu/ArDC catalyst is the most active, producing 3.7 gC/gmetal after 2 h of reaction (equivalent to average hydrogen productivity of 0.61 g H2/gmetal∙h). The lower productivity of the Co–Cu/ArDC catalyst (1.4 gC/gmetal) could be caused by the higher proportion of small metallic NPs (<5 nm) that remain confined inside the micropores of the carbonaceous support, hindering the formation and growth of the CNTs. The TEM and Raman results indicate that the Co–Cu catalyst is able to selectively produce CNTs of high quality at temperatures below 850 °C, attaining the best results at 800 °C. The results obtained in this work also show the elevated potential of Argan residues, as a representative of other lignocellulosic raw materials, in the development of carbonaceous materials and nanomaterials of high added-value.

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Synthesis of Nickel Nanoparticles Supported on Carbon Using a Filter Paper as Biomorphic Pattern for Application in Catalysis

Cited by 3 publications

References 28 publications

Titanate Nanotubes as New Nanostrutured Catalyst for Depolymerization of PET by Glycolysis Reaction

Titanate Nanotubes as New Nanostrutured Catalyst for Depolymerization of PET by Glycolysis Reaction

Efficient algal lipid extraction via a green bio-electro-Fenton process and its conversion into biofuel and bioelectricity with concurrent wastewater treatment in a photosynthetic microbial fuel cell

Hydrogen and CNT Production by Methane Cracking Using Ni–Cu and Co–Cu Catalysts Supported on Argan-Derived Carbon

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