Heterogeneous Fenton catalysts: A review of recent advances

Journal of Hazardous Materials, Journal Year: 2020, Volume and Issue: 404, P. 124082 - 124082

Published: Oct. 2, 2020

Heterogeneous Fenton catalysts are emerging as excellent materials for applications related to water purification. In this review, recent trends in the synthesis and application of heterogeneous abatement organic pollutants disinfection microorganisms discussed. It is noted that complexity cell wall increases, resistance level towards various disinfectants increases it requires either harsh conditions or longer exposure time complete disinfection. case viruses, enveloped viruses (e.g. SARS-CoV-2) found be more susceptible than non-enveloped viruses. The introduction plasmonic with broadens visible light absorption efficiency hybrid material, incorporation semiconductor material improves rate regeneration Fe(II) from Fe(III). A special emphasis given use antibacterial applications. Composite magnetite ferrites remain a champion area because their easy separation reuse, owing magnetic properties. Iron minerals supported on clay materials, perovskites, carbon zeolites metal-organic frameworks (MOFs) dramatically increase catalytic degradation contaminants by providing high surface area, good mechanical stability, improved electron transfer. Moreover, insights zero-valent iron its capacity remove wide range pollutants, heavy metals bacterial contamination also Real world role natural matter summarised. Parameter optimisation source, dosage catalyst, concentration H

Language: Английский

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Sustainability Assessment of Mechanochemistry by Using the Twelve Principles of Green Chemistry

ChemSusChem, Journal Year: 2021, Volume and Issue: 14(10), P. 2145 - 2162

Published: April 9, 2021

In recent years, mechanochemistry has been growing into a widely accepted alternative for chemical synthesis. addition to their efficiency and practicality, mechanochemical reactions are also recognized sustainability. The association between Green Chemistry often originates from the solvent-free nature of most protocols, which can reduce waste production. However, satisfies more than one Principles Chemistry. this Review we will present series examples that clearly illustrate how significantly contribute fulfillment in holistic manner.

Language: Английский

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Chemistry glows green with photoredox catalysis

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Feb. 6, 2020

Can organic chemistry mimic nature in efficiency and sustainability? Not yet, but recent developments photoredox catalysis animated the synthetic field, providing greener opportunities for industry academia.

Language: Английский

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Phosphorus recovery and recycling – closing the loop

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 50(1), P. 87 - 101

Published: Nov. 19, 2020

The natural phosphorus cycle has been disrupted by human activity, which necessitates the development of new methods for sustainable production compounds, and efficient recovery recycling schemes.

Language: Английский

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Greenificated Molecularly Imprinted Materials for Advanced Applications

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(42)

Published: June 23, 2022

Abstract Molecular imprinting technology (MIT) produces artificial binding sites with precise complementarity to substrates and thereby is capable of exquisite molecular recognition. Over five decades evolution, it predicted that the resulting host imprinted materials will overtake natural receptors for research application purposes, but in practice, this has not yet been realized due unsustainability their life cycles (i.e., precursors, creation, use, recycling, end‐of‐life). To address issue, greenificated molecularly polymers (GMIPs) are a new class plastic antibodies have approached sustainability by following one or more greenification principles, while also demonstrating far‐reaching applications compared counterparts. In review, most recent developments delicate design advanced GMIPs six fast‐growing emerging fields surveyed, namely biomedicine/therapy, catalysis, energy harvesting/storage, nanoparticle detection, gas sensing/adsorption, environmental remediation. addition, distinct features highlighted, optimal means utilize these attaining incredibly discussed. Importantly, obscure technical challenges MIT revealed, conceivable solutions offered. Lastly, several perspectives on future directions proposed.

Language: Английский

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Green chemistry and the plastic pollution challenge: towards a circular economy

Green Chemistry, Journal Year: 2020, Volume and Issue: 22(19), P. 6310 - 6322

Published: Jan. 1, 2020

The solution to plastic pollution is not less chemistry but more, greener in a circular bio-based economy.

Language: Английский

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100th Anniversary of Macromolecular Science Viewpoint: Redefining Sustainable Polymers

ACS Macro Letters, Journal Year: 2020, Volume and Issue: 10(1), P. 41 - 53

Published: Dec. 17, 2020

Although Staudinger realized makromoleküles had enormous potential, he likely did not anticipate the consequences of their universal adoption. With 6.3 billion metric tons plastic waste now contaminating our land, water, and air, we are facing an environmental public health crisis. Synthetic polymer chemists can help create a more sustainable future, but on right path to do so? Herein, comprehensive literature survey reveals that there has been increased focus "sustainable polymers" in recent years, most papers biomass-derived feedstocks. In contrast, is less end-of-life fates. Moving forward, suggest emphasis chemical recycling, which sees value promotes closed-loop economy. To keep us sustainability, synthetic community should routinely seek systems perspective offered by life cycle assessment.

Language: Английский

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Towards safe and sustainable innovation in nanotechnology: State-of-play for smart nanomaterials

NanoImpact, Journal Year: 2021, Volume and Issue: 21, P. 100297 - 100297

Published: Jan. 1, 2021

The European Green Deal, the Commission's new Action Plan for a Circular Economy, Industrial Strategy and Chemicals Sustainability launched in October 2020 are ambitious plans to achieve sustainable, fair inclusive Union's economy. In line with United Nations Sustainable Development Goals 2030, these policies require that any material or product should be not only functional cost-effective but also safe sustainable ensure compliance regulation acceptance by consumers. Nanotechnology is one of technologies could enable such green growth. This paper focuses on advanced nanomaterials actively respond external stimuli, known as 'smart nanomaterials', which already market research development phase non-medical applications agriculture, food, food packaging cosmetics. A review shows smart enabled products may present challenges safety sustainability assessment due their complexity dynamic behaviour. Moreover, existing regulatory frameworks, particular Union, probably fully prepared address them. What missing today systematic comprehensive approach allows considering aspects hand considerations very early at design stage. We call innovators, scientists authorities further develop promote 'Safe- Sustainable-by-Design' concept nanotechnology propose some initiatives go into this direction.

Language: Английский

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Hydrogenative Depolymerization of Nylons

Journal of the American Chemical Society, Journal Year: 2020, Volume and Issue: 142(33), P. 14267 - 14275

Published: July 24, 2020

The widespread crisis of plastic pollution demands discovery new and sustainable approaches to degrade robust plastics such as nylons. Using a green approach based on hydrogenation, in the presence ruthenium pincer catalyst at 150 °C 70 bar H2, we report here first example hydrogenative depolymerization conventional, widely used nylons polyamides, general. Under same catalytic conditions, also demonstrate hydrogenation polyurethane produce diol, diamine, methanol. Additionally, an where monomers (and oligomers) obtained from process can be dehydrogenated back poly(oligo)amide approximately similar molecular weight, thus completing closed loop cycle for recycling polyamides. Based experimental density functional theory studies, propose that is facilitated by metal–ligand cooperativity. Overall, this unprecedented transformation, albeit proof concept level, offers toward cleaner route

Language: Английский

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Facile cost-effective fabrication of Cu@Cu2O@CuO–microalgae photocatalyst with enhanced visible light degradation of tetracycline

Chemical Engineering Journal, Journal Year: 2020, Volume and Issue: 413, P. 127477 - 127477

Published: Oct. 24, 2020

The widespread use and negative environmental effects of antibiotics have made their removal from aqueous media essential in terms wastewater treatment. Accordingly, a hybrid helical [email protected]2[email protected]–microalgae photocatalyst for antibiotic photodegradation was synthesized this study by simple, inexpensive, scalable process based on electroless Cu deposition soft thermal more competitive the photocatalytic degradation tetracycline, especially mineralization energy consumption, than state-of-the-art photocatalysts. excellent performance is attributable to effective formation onion-like protected] heterojunctions, which synergistically lower electron–hole recombination rate, promote utilization light photogeneration charge carriers, decrease photocorrosion activity. All these result enhanced tetracycline. high hybrids under LED irradiation resulted significantly electrical per order—i.e., required diminish tetracycline concentration one order magnitude unit volume—of 57 kW h m−3 order-1. Importantly, can easily be recycled after reaching lifetime fabricate microalgal pellets, then integrated into circular an environment–energy nexus minimize generation residues.

Language: Английский

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