Effect of silica coating on the catalytic activity of maghemite nanoparticles impregnated into mesoporous silica matrix

Damas, Jediel O.; Moscardini, Susane Bonamin; Oliveira, L.R.; Silva, Robson R. da; Nassar, Eduardo J.; Faria, Emerson H. de; Ciuffi, Kátia J.; Ribeiro, Sidney José Lima; Rocha, Lucas A.

doi:10.1016/j.matchemphys.2018.12.051

Cited by 7 publications

(1 citation statement)

References 46 publications

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“…Silica NPs contain wealthy -Si-OH functional groups and show enhanced catalytic activity based on catalysts (Pt, Pd, Cu, etc.) embedded with the nanostructures [96,97]. Even this group of NPs can be used as an adsorbent to remove some colored pollutants in wastewater [98].…”

Section: Key Nps For Heavy Metal Mitigationmentioning

confidence: 99%

Nanotechnological approaches as a promising way for heavy metal mitigation in an aqueous system

Muthukumaran¹,

Palanisamy

Shyamalagowri³

et al. 2021

J Basic Microbiol

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The ever-rising environmental problems because of heavy metals emerging from anthropogenic activities pose an impending threat to all biota globally. Considering their persistence and possibility in biomagnification, they are prominent among pollutants. There has been an apparent shift of research interest in advancing costeffective and competent technologies to mitigate environmental contaminants, specifically heavy metals. In the recent two decades, tailored nanomaterials (NMs), nanoparticles, and NM-based adsorbents have been emerging for removing heavy metal pollution on a sustainable scale, especially the green synthesis of these nanoproducts effective and nonhazardous means. Hence, this review explores the various avenues in nanotechnology, an attempt to gauge nanotechnological approaches to mitigate heavy metals in the aqueous system, especially emphasizing the recent trends and advancements. Inputs on remediating heavy metal in sustainable and environmentally benign aspects recommended future directions to compensate for the voids in this domain have been addressed.

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Section: Key Nps For Heavy Metal Mitigationmentioning

confidence: 99%

Nanotechnological approaches as a promising way for heavy metal mitigation in an aqueous system

Muthukumaran¹,

Palanisamy

Shyamalagowri³

et al. 2021

J Basic Microbiol

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Small Angle Scattering Techniques for the Study of Catalysts and Catalytic Processes

et al. 2023

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Small‐Angle Scattering (SAS) techniques are essential tools for the characterization of catalysts before, during and after catalytic reactions. Either based on X‐Rays (SAXS) or neutrons (SANS), they provide unique structural information that helps to understand catalytic processes at the nanoscale level, allowing a rational improvement of the catalysts design. In this review, we present the key aspects involved in the use of these techniques in the catalysis field. Firstly, we introduce some of the fundamentals of the techniques and describe their main features and their impact in the catalyst design. Then, we analyze key examples of the use of SAS to study catalysts’ structure through ex situ analysis, focusing on examples involving different porous materials and metallic nanoparticles. Afterwards, we discuss in situ and operando approaches for studying catalytical processes monitored using SAS. Finally, we present perspectives and challenges for the future use of SAS in the catalysis field.

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Chiral Inorganic mesoporous materials used as the stationary phase in GC

Yuan

et al. 2019

Separation Science Plus

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Mesoporous materials are promising functional materials due to their properties, such as a large surface area, tunable pore size, structure and morphology. Chiral mesoporous silica is an indispensable part of mesoporous materials. Considering that chirality is rare in inorganic mesoporous materials, there are very few reports on chiral inorganic mesoporous silica for chromatographic separations. In this work, we report the use of chiral inorganic mesoporous silica based on the template of myristyl chloride‐l‐valine sodium as the stationary phase for enantioselective separation in gas chromatography. Thirteen chiral compounds were resolved on a fabricated column using dynamic coating, including chiral alcohols, epoxides and amino acid derivatives. In addition, n‐alkanes, n‐alcohols and aromatic hydrocarbons have also been separated.

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Effect of silica coating on the catalytic activity of maghemite nanoparticles impregnated into mesoporous silica matrix

Cited by 7 publications

References 46 publications

Nanotechnological approaches as a promising way for heavy metal mitigation in an aqueous system

Nanotechnological approaches as a promising way for heavy metal mitigation in an aqueous system

Small Angle Scattering Techniques for the Study of Catalysts and Catalytic Processes

Chiral Inorganic mesoporous materials used as the stationary phase in GC

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