Hybrid multi-core shell magnetic nanoparticles for wet peroxide oxidation of paracetamol: Application in synthetic and real matrices

Silva, Adriano S.; Roman, Fernanda F.; Dias, Arnaldo V.; Diaz de Tuesta, Jose L.; Narcizo, Alexandre; da Silva, Ana Paula F.; Çaha, Ihsan; Deepak, Francis Leonard; Bañobre-López, Manuel; Ferrari, Ana M.C.; Gomes, Helder T.

doi:10.1016/j.jece.2023.110806

Cited by 4 publications

(1 citation statement)

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“…Both solutions were then inserted into an ice bath until reaching temperature equilibrium. The choice of a M +2 /M +3 molar ratio of 2 was based on previous works related to the sol-gel synthesis of other ferrites [66,67]. The solutions were mixed in one beaker with Al 2 O 3 (6.6 g), and the mixture was heated to 60 • C for 2 h in a heating plate with stirring.…”

Section: Synthesis Of Carbon Nanotubesmentioning

confidence: 99%

Carbon Nanomaterials from Polyolefin Waste: Effective Catalysts for Quinoline Degradation through Catalytic Wet Peroxide Oxidation

Roman,

De Grande Piccinin,

Santos Silva

et al. 2023

Catalysts

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Quinoline (QN) is highly toxic and carcinogenic and has been detected in soil, groundwater, and biological tissues. Advanced oxidation processes (AOPs) have shown promise to address its degradation in wastewater treatment, with catalytic wet peroxide oxidation (CWPO) being highlighted due to its cost-effectiveness and mild operation. However, developing active and inexpensive catalysts is crucial for CWPO’s effectiveness. Another pressing issue is the accumulation of mixed, dirty plastic solid waste (PSW), particularly polyolefins used in packaging. Although recycling rates have increased, much plastic packaging remains in landfills. However, polyolefins can be converted into carbon-based nanostructured materials (CNMs), such as carbon nanotubes (CNTs), through chemical vapor deposition (CVD) using PSW as a carbon precursor. While many studies focus on CNT preparation, their application is often overlooked. In this context, this work proposes the preparation of CNMs, particularly CNTs, through CVD using a single-stage pyrolysis reactor. Polyolefins (LDPE, HDPE, and PP), both individually and in a mixture simulating PSW, were used as carbon sources. Given a sufficiently high temperature, the desired CNT architecture was successfully synthesized regardless of the starting polymer. These CNMs were then tested as catalysts for CWPO in simulated wastewater containing QN. The results showed a rapid degradation of QN (30–120 min) and high removals of total organic carbon (TOC) and aromatic compounds (75% and >90%, respectively), demonstrating the applicability of PSW-derived CNTs in the CWPO process for QN abatement.

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Section: Synthesis Of Carbon Nanotubesmentioning

confidence: 99%