Application of titanium dioxide for the photocatalytic degradation of macro- and micro-plastics: A review

Nabi, Iqra; Bacha, Aziz-Ur-Rahim; Ahmad, Farhad; Zhang, Liwu

doi:10.1016/j.jece.2021.105964

Cited by 95 publications

(38 citation statements)

References 94 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…MPs have been found in different environmental media such as air, water, and soil. The major transportation route of MPs from manufacturing to the seas/oceans has been reported in a previous study . Atmospheric fluxes play an important role in MP transport, with augmented prevalence and higher transportation concentrations noted in populated areas.…”

Section: Introductionmentioning

confidence: 59%

“…Light-induced reactive radicals play an important role in bonds cleavage and MP decomposition. 30 Most of the used photocatalysts do not show the complete mineralization of MPs, and the decomposition efficacy needs further improvement. Future studies should focus on the optimization of photocatalytic material in terms of their decomposition performance, cost, stability, and environmental friendliness.…”

Section: Engineering Approach For Microplastic Degradationmentioning

confidence: 99%

“…Since TiO 2 showed complete photomineralization of MPs under UV light, the improvement in photocatalytic material may be an new developing trend, resulting in significant decomposition efficiency. Light-induced reactive radicals play an important role in bonds cleavage and MP decomposition . Most of the used photocatalysts do not show the complete mineralization of MPs, and the decomposition efficacy needs further improvement.…”

Section: Engineering Approach For Microplastic Degradationmentioning

confidence: 99%

“…The major transportation route of MPs from manufacturing to the seas/oceans has been reported in a previous study. 30 Atmospheric fluxes play an important role in MP transport, with augmented prevalence and higher trans- portation concentrations noted in populated areas. In an aquatic ecosystem, freshwater alternates between MPs transport (rivers) and deposition (lakes) with flow rate being recognized as the main feature determining the movement of MPs.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mechanisms and the Engineering Approaches for the Degradation of Microplastics

2021

Self Cite

View full text Add to dashboard Cite

Microplastic waste is an emerging global issue due to its environmental effect of accumulation in ecosystems, and waste managing systems have given rise to its presence in the aquatic environment. It is gaining attention due to its persistent nature and potential adverse effects on living organisms. There is an urgent need for the development of efficient degradation methods for microplastic (MP) treatment. In this review, a comprehensive overview of current methods for the degradation of MPs, such as biological, photo, chemical, and mechanical degradation have been summarized and discussed in detail. All the fundamental mechanisms of MP degradation in the natural environment are linked with remediation approaches to accelerate these mechanisms that occur in nature. Decomposition efficiency with the applied system’s limitations has also been mentioned. Furthermore, the current knowledge gaps about MP decomposition, and future research directions are proposed. This work offers a summary of current degradation methods for MP decomposition and provides a reference for the control of MP pollution.

show abstract

Section: Introductionmentioning

confidence: 59%

Section: Engineering Approach For Microplastic Degradationmentioning

confidence: 99%

Section: Engineering Approach For Microplastic Degradationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanisms and the Engineering Approaches for the Degradation of Microplastics

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…[333] For instance, titanium dioxide as a photocatalyst enables photocatalytic degradation of both macro-and microplastics. [334] Commercial polyolefins such as PE and PP do not contain chromophores, because highly active catalysts used in commercial catalytic olefin polymerization are severely poisoned by even minute amounts of polar comonomers, such as acrylics and carbon monoxide. Catalytic ethylene copolymerization with carbon monoxide on palladium catalysts yields strictly alternating polyketone copolymers, which exhibit property profiles that are vastly different from commodity polyolefins.…”

Section: Oxo-and Photodegradationmentioning

confidence: 99%

Closing the Carbon Loop in the Circular Plastics Economy

Schirmeister

Mülhaupt

2022

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Today, plastics are ubiquitous in everyday life, problem solvers of modern technologies, and crucial for sustainable development. Yet the surge in global demand for plastics of the growing world population has triggered a tidal wave of plastic debris in the environment. Moving from a linear to a zero‐waste and carbon‐neutral circular plastic economy is vital for the future of the planet. Taming the plastic waste flood requires closing the carbon loop through plastic reuse, mechanical and molecular recycling, carbon capture, and use of the greenhouse gas carbon dioxide. In the quest for eco‐friendly products, plastics do not need to be reinvented but tuned for reuse and recycling. Their full potential must be exploited regarding energy, resource, and eco‐efficiency, waste prevention, circular economy, climate change mitigation, and lowering environmental pollution. Biodegradation holds promise for composting and bio‐feedstock recovery, but it is neither the Holy Grail of circular plastics economy nor a panacea for plastic littering. As an alternative to mechanical downcycling, molecular recycling enables both closed‐loop recovery of virgin plastics and open‐loop valorization, producing hydrogen, fuels, refinery feeds, lubricants, chemicals, and carbonaceous materials. Closing the carbon loop does not create a Perpetuum Mobile and requires renewable energy to achieve sustainability.

show abstract

Metal Oxides‐Based Nano/Microstructures for Photodegradation of Microplastics

Kumar¹

2023

Advanced Sustainable Systems

View full text Add to dashboard Cite

The ubiquitous presence of microplastics in the environment has raised serious environmental and health concerns. These tiny plastic particles can enter the food chain, posing a significant threat to human health. Researchers worldwide have focused their efforts on developing strategies to mitigate microplastic pollution. This review focuses on the potential of nano/microstructured metal oxide semiconductors as effective photocatalysts for microplastic degradation. The review is divided into two sections: static metal oxides and dynamic micromachines based on metal oxides. The modifications made to nano/microstructured metal oxides such as TiO2, ZnO, bismuth oxyhalides (BiOX), NiO, Cu2O/CuO, perovskite‐like Bi2WO6, Fe3O4, etc., to enhance their degradation efficiency are thoroughly discussed and reviewed. Additionally, the photocatalytic pathways for the conversion of microplastics into C2 fuel and other value‐added products are also elaborated. The current developments in the realm of dynamic, self‐propelled, and controlled micromotors for the photodegradation of microplastics are also highlighted. The review concludes by proposing future perspectives and challenges to facilitate the remediation of microplastics in water and wastewater systems in a more effective, scalable, and environmentally friendly manner. Overall, the review emphasizes the potential of photocatalysis using nano/microstructured metal oxide semiconductors as an eco‐friendly and promising approach for microplastic degradation.

show abstract

Application of titanium dioxide for the photocatalytic degradation of macro- and micro-plastics: A review

Cited by 95 publications

References 94 publications

Mechanisms and the Engineering Approaches for the Degradation of Microplastics

Mechanisms and the Engineering Approaches for the Degradation of Microplastics

Closing the Carbon Loop in the Circular Plastics Economy

Metal Oxides‐Based Nano/Microstructures for Photodegradation of Microplastics

Contact Info

Product

Resources

About