Integrated Process for Ballot Bin Waste Valorization for High-Quality Cellulose Acetate Recovery DOI Creative Commons
Niccolò Lamanna, Giovanni Zuccante,

Massimiliano Rossetti

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(23), P. 10955 - 10955

Published: Nov. 26, 2024

Cigarette butt littering poses a significant environmental challenge, with billions of butts discarded each year, fouling ecosystems slow-to-decompose cellulose acetate filters that absorb and release harmful compounds. In response, an innovative, sustainable approach for valorizing ballot bin waste (BBW) by extracting high-quality from cigarette was investigated. This green eliminates the need hazardous acids toxic solvents, resulting in yield 30% (w/w) degree substitution (DS) 2.0–2.5, which is comparable to pure acetate. The following four essential processes are involved this process: filter separation, water washing remove impurities, ethanol purification, acetone precipitation not only mitigates harm, but also supports circular economy goals transforming into valuable resources.

Language: Английский

Enhancing Electrocatalysis: Engineering the Fe–Nx–C Electrocatalyst for Oxygen Reduction Reaction Using Fe-Functionalized Silica Hard Templates DOI Creative Commons
Mohsin Muhyuddin, Silvia Mostoni, Hilah C. Honig

et al.

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

The availability of robust and accessible active sites in iron–nitrogen-carbon (Fe–Nx-C) electrocatalysts is essential to optimize the oxygen reduction reaction (ORR), which main obstacle commercial realization fuel cells. Herein, a modified hard templating method develop efficient Fe–Nx-C has been presented that not only ensured generation porous architecture but also helped homogeneous distribution Fe throughout structure. First, silica nanoparticles (NPs) were grown via Stöber process then functionalized atomically with iron through two different types silane chains, i.e., (3-aminopropyl)triethoxysilane (APTES) N-(2-Aminoethyl)-3-aminopropyltriethoxysilane (EDTMS). Fe-functionalized simultaneously acting as sacrificial template well an source was impregnated nicarbazin, carbon nitrogen precursor. dried mix subject pyrolysis (H1) followed by acid washing dissolve templates, then, again, it subjected another treatment (H2). At each proceeding step, ORR activity both acidic alkaline media improved samples obtained at last stage (i.e., H2) outperformed other counterparts collected initial stages fabrication pathway. Eventually, electrocatalyst developed using EDTMS-type attached NPs (E_FeNC_H2) demonstrated highest onset potentials 990 mV vs RHE 862 media. Moreover, lower peroxide yield E_FeNC_H2 signifying nearly direct 4e– attributed specific surface area (627 m2 g–1) optimum combination moieties dispersed carbonaceous framework.

Language: Английский

Citations

3
Upgrading the waste Acrylonitrile-Butadiene-Styrene into crude oil and highly efficient electrocatalysts for oxygen reduction reaction DOI Creative Commons

Loris Sallaku,

Lorenzo Mirizzi, Mohsin Muhyuddin

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162236 - 162236

Published: April 1, 2025

Language: Английский

Citations

0
Repurposing Discarded Porphyrin Waste as Electrocatalysts for the Oxygen Reduction Reaction DOI Creative Commons

Nicolò Giulini,

Mohsin Muhyuddin, Sara Mattiello

et al.

Electrochimica Acta, Journal Year: 2024, Volume and Issue: unknown, P. 145113 - 145113

Published: Sept. 1, 2024

Language: Английский

Citations

1
Emerging Carbon-Based Catalysts for the Oxygen Reduction Reaction: Insights into Mechanisms and Applications DOI Creative Commons
Jing Guo,

Yuqi Yao,

Xin Yan

et al.

Inorganics, Journal Year: 2024, Volume and Issue: 12(12), P. 303 - 303

Published: Nov. 25, 2024

The oxygen reduction reaction (ORR), as a key electrode process in fuel cells and metal-air batteries, plays pivotal role advancing clean energy technologies. However, the slow kinetics high overpotential of ORR significantly limit efficiency these devices. Therefore, development efficient, stable, cost-effective catalysts has become central focus current research. Carbon-based catalysts, with their excellent conductivity, chemical stability, tunable structural features, have emerged promising alternatives to traditional precious metal catalysts. Nevertheless, challenges remain design active sites, tuning electronic structures, large-scale synthesis carbon-based This review systematically introduces fundamental mechanisms factors influencing ORR, providing an analysis critical variables that affect catalyst performance. Furthermore, it summarizes several common methods for synthesizing including pyrolysis, deposition, ball milling. Following this, categorizes discusses latest advancements metal-free single-atom dual-atom well metal-based nanoparticle particular on enhancing Finally, state research is summarized, future directions are proposed, emphasizing optimization improvements potential strategies applications.

Language: Английский

Citations

1
Integrated Process for Ballot Bin Waste Valorization for High-Quality Cellulose Acetate Recovery DOI Creative Commons
Niccolò Lamanna, Giovanni Zuccante,

Massimiliano Rossetti

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(23), P. 10955 - 10955

Published: Nov. 26, 2024

Cigarette butt littering poses a significant environmental challenge, with billions of butts discarded each year, fouling ecosystems slow-to-decompose cellulose acetate filters that absorb and release harmful compounds. In response, an innovative, sustainable approach for valorizing ballot bin waste (BBW) by extracting high-quality from cigarette was investigated. This green eliminates the need hazardous acids toxic solvents, resulting in yield 30% (w/w) degree substitution (DS) 2.0–2.5, which is comparable to pure acetate. The following four essential processes are involved this process: filter separation, water washing remove impurities, ethanol purification, acetone precipitation not only mitigates harm, but also supports circular economy goals transforming into valuable resources.

Language: Английский

Citations

0