Catalytic processing of plastic waste on the rise

Martín, Antonio J.; Mondelli, Cecilia; Jaydev, Shibashish D.; Pérez‐Ramírez, Javier

doi:10.1016/j.chempr.2020.12.006

Cited by 314 publications

(305 citation statements)

References 155 publications

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“…Plastic as one of the most influential inventions of 20th century has been widely applied in our daily life (Andrady and Neal, 2009;Bai et al, 2019;Jie et al, 2020;Gausas et al, 2021;Zhang F et al, 2021). Currently, about 360 million tonnes (Mt) of plastic are produced each year (Martín et al, 2021), and the number is expected to double over the next 2 decades (MacArthur 2017). However, only a small portion of the produced plastic is recycled after use.…”

Section: Introductionmentioning

confidence: 99%

“…The rapid accumulation of plastic waste has resulted in a worldwide "white pollution." For example, it has been estimated that if the current trend continues, more than 8 Mt of plastic will enter the ocean each year, and the overall weight of the waste plastic will higher than that of fish in 2050 (Thompson et al, 2004;MacArthur, 2017;Uekert et al, 2018;Martín et al, 2021). Moreover, the huge production of plastic also exacerbates the global energy crisis, due to that almost all of the plastics are produced from petrochemicals derived from fossil fuel production, such as light (C 1 -C 4 ) fractions of oil and natural gas, which accounts for ∼ 6% consumption of the fossil fuel (Vollmer et al, 2020;Martín et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…For example, it has been estimated that if the current trend continues, more than 8 Mt of plastic will enter the ocean each year, and the overall weight of the waste plastic will higher than that of fish in 2050 (Thompson et al, 2004;MacArthur, 2017;Uekert et al, 2018;Martín et al, 2021). Moreover, the huge production of plastic also exacerbates the global energy crisis, due to that almost all of the plastics are produced from petrochemicals derived from fossil fuel production, such as light (C 1 -C 4 ) fractions of oil and natural gas, which accounts for ∼ 6% consumption of the fossil fuel (Vollmer et al, 2020;Martín et al, 2021). The ever-increasing demand accompanying with the continuously rised discarding of plastic causes serious environmental and energy challenges, which call for reducing, increasing reuse and recycling of the plastic to tackle the dilemma and moves toward circular economy (Lopez et al, 2017;Ru et al, 2020;Tennakoon et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…If all of the global plastic solid waste could be recycled, it would save an estimated 3.5 billion barrels of oil a year, valued at $176 billion dollars, implying a high economic benefit (Garcia and Robertson, 2017;Rahimi and García, 2017). At present, the most widely adopted strategy for the plastic waste valorization is based on mechanical recycling (Martín et al, 2021). The approach collects and reprocesses the plastic polymer as raw material for new plastic manufacturing by sorting, shredding, melting, and re-extrusion (Al-Salem et al, 2009;Kumar et al, 2011;Mark et al, 2020;Schyns and Shaver, 2021;Zhang K et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…The products not only can be re-polymerized into virgin plastic, but also can be upcycled into alternative chemicals and fuels, thus enabling the materials reusing in a closed loop. Especially, the approach is applicable to all kinds of plastic waste (Martín et al, 2021). Nevertheless, the chemical recycling is generally an energy-intensive process, requiring high temperature and/or pressure (Worch and Dove, 2020).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Recent Advancements in Photocatalytic Valorization of Plastic Waste to Chemicals and Fuels

Chen¹,

Yang²,

Wang³

et al. 2021

Front. Nanotechnol.

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The continuous rise in plastic waste raises serious concerns about the ensuing effects on the pollution of global environment and loss of valuable resources. Developing efficient approach to recycle the plastic has been an urgent demand for realizing a sustainable circular economy. Photocatalytic valorization directly utilizes solar energy to transform plastic pollutant into chemicals and fuels, which is hardly implemented by traditional mechanical recycling and incineration strategies, thus offering a promising approach to address the contemporary waste and energy challenges. Here, we focus on the recent advances in the high-value utilization of plastic waste through photocatalysis. The basic principle and different reaction pathways for the photocatalytic valorization of plastic waste are presented. Then, the developed representative photocatalyst systems and converted products are elaborately discussed. At last, the review closes with critical thoughts on research challenges along with some perspectives for further development of this emerging and fascinating filed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Recent Advancements in Photocatalytic Valorization of Plastic Waste to Chemicals and Fuels

Chen¹,

Yang²,

Wang³

et al. 2021

Front. Nanotechnol.

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Recycling Polyethylene into High‐Value Porous Carbon Composites for Microwave Absorption

et al. 2023

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The recycling of solid plastic waste has been a major challenge to the sustainable development of today's society. Herein, one of the commonly wasted plastic raw materials, linear low‐density polyethylene (LLDPE), is used as the carbon source to explore high‐value porous carbon composites for microwave absorption applications. The carbon composites are simply obtained through the delicate carbonization of LLDPE, followed by in situ introducing Ni nanoparticles (NPs) into the carbon monolith. The porous carbon composites show a minimum reflection loss (RLmin) value of −52.2 dB at 1.65 mm, which demonstrates excellent microwave absorption properties of the wasted plastic‐derived carbon materials. In addition, the anticorrosion performance of the carbon composites is evaluated by electrochemical technique. Above all, the current study provides a new idea and simple strategy for processing wasted plastics to high‐value porous carbon materials.

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Photothermal Catalytic Polyester Upcycling over Cobalt Single‐Site Catalyst

Liu

Wang

et al. 2022

Adv Funct Materials

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Photothermal catalytic conversion of waste plastics into fuels and/or feedstocks using renewable solar energy can achieve solar-to-chemical conversion, resource sustainability, and environmental remediation simultaneously. However, the construction of photothermal catalysts with strong light absorption and high catalytic activity remains a great challenge. In this work, integrated cobalt single-site catalysts (Co SSCs), coupled with strong photothermal conversion, high catalytic activity, and stability, are employed to catalyze the glycolysis of polyesters. The unique coordination-unsaturated CoO 5 single-site can coordinate with the carbonyl groups in polyester, thus boosting the nucleophilic addition elimination processes. As a result, the spacetime yield of Co SSCs is an order of magnitude higher than that of general catalysts. In addition, the polyethylene terephthalate (PET) conversion and bis(2-hydroxyethyl) terephthalate yield in photothermal catalysis are 5.4 and 6.6 times higher than those of thermal catalysis under the same conditions, which are contributed by the localized heating effect. Technical economic analysis shows that the recycling of 10 5 tons of waste PET by photo thermal catalysis consumes 146.4 GW•h electrical energy and misses 7.44 × 10 4 tons of CO 2 emission. Therefore, a high-efficient photothermal catalytic plastic recycling system is of great significance for waste plastic valorization.

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Catalytic processing of plastic waste on the rise

Cited by 314 publications

References 155 publications

Recent Advancements in Photocatalytic Valorization of Plastic Waste to Chemicals and Fuels

Recent Advancements in Photocatalytic Valorization of Plastic Waste to Chemicals and Fuels

Recycling Polyethylene into High‐Value Porous Carbon Composites for Microwave Absorption

Photothermal Catalytic Polyester Upcycling over Cobalt Single‐Site Catalyst

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