Efficient Photocatalytic Degradation of the Persistent PET Fiber-Based Microplastics over Pt Nanoparticles Decorated N-Doped TiO2 Nanoflowers

Zhou, Dawang; Luo, Hui; Zhang, Fangzhou; Wu, Jing; Yang, Jianping; Wang, Huaping

doi:10.1007/s42765-022-00149-4

Cited by 98 publications

(27 citation statements)

References 49 publications

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“…[67] Further doping of the N-doped TiO 2 nanocomposites with Pt nanoparticles further improved the fiber-based microplastics. [52] Photolysis of HDPE microplastic recovered from a commercially available face scrub using C, N-doped TiO 2 at 20 °C (pH 7), and 40 °C (pH 3, 11) did not show significant fragmentation, however, at pH 3 and 0 °C, the mean mass loss after 50 h of irradiation was 71.77 ± 1.88% (Figure 3a-f). Photocatalysis at low temperatures (0 °C) enhances the surface area of microplastics by fragmentation, while photooxidation at low pH values (pH 3) stimulates the generation of hydroperoxides.…”

Section: Tio 2 Nanostructuresmentioning

confidence: 96%

“…Surface modification by depositing noble metal nanoparticles (Cu, Ag, Au, Pt, Pd, etc.) [ 52 ] on metal oxide nano/microstructures can improve their electron transfer efficiency and extend their light absorption range. Optimizing the size of metal oxide nanoparticles is essential as size affects the surface area and active sites for photocatalytic reactions.…”

Section: Strategies Adopted For Microplastic Degradation Using Nano/m...mentioning

confidence: 99%

“…[ 67 ] Further doping of the N‐doped TiO 2 nanocomposites with Pt nanoparticles further improved the fiber‐based microplastics. [ 52 ]…”

Section: Strategies Adopted For Microplastic Degradation Using Nano/m...mentioning

confidence: 99%

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Metal Oxides‐Based Nano/Microstructures for Photodegradation of Microplastics

Kumar¹

2023

Advanced Sustainable Systems

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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.

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Section: Tio 2 Nanostructuresmentioning

confidence: 96%

Section: Strategies Adopted For Microplastic Degradation Using Nano/m...mentioning

confidence: 99%

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Metal Oxides‐Based Nano/Microstructures for Photodegradation of Microplastics

Kumar¹

2023

Advanced Sustainable Systems

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“…[33][34][35] The superior performance of our porous N-doped CNTs r-PET can be ascribed to the N-doping and the defects. [36][37][38][39][40][41]…”

Section: Characterization and Electrochemical Performance Of Porous N...mentioning

confidence: 99%

Nitrogen doping induced by intrinsic defects of recycled polyethylene terephthalate‐derived carbon nanotubes

Tong

Wang

et al. 2023

SusMat

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The indiscriminate utilization of nondegradable polyethylene terephthalate (PET)-based products has triggered serious environmental pollution that has to be resolved vigorously. A simple synthesis of N-doped carbon nanotubes from recycled PET (NCNTs r-PET ) was developed by a nitric acid-assisted hydrothermal method. Experimental results and theoretical calculations show that the intrinsic defects in CNTs r-PET would induce N-doping by NH 3 generated from nitric acid during the hydrothermal process, thus producing the NCNTs r-PET . The life cycle assessment proves that the developed method for N-doped CNTs using r-PET as the carbon source is more environmentally friendly than the conventional chemical vapor deposition using acetylene as the carbon source. As a typical application, the NCNTs r-PET delivered an impressive sodium storage capacity with an ultralong lifespan. This work not only provides a new route to upcycling waste plastics into valuable carbonaceous materials in an ecofriendly manner, but also reveals a basic understanding of the N-doping mechanism in carbonaceous materials.

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“…To address the water pollution concerns, the conversion of solar energy to degrade pollutants in water has been considered as one of the most efficient and effective solutions. Photocatalysts such as TiO 2 nanoparticles are widely employed due to their high catalytic stability, cost-effective property and moderate demands for the ambient condition [3][4][5]. However, the fast recombination rate of photogenerated electron-hole (e − /h + ) pairs and weak adsorbing affinity of nanoparticles toward target contaminants restrict the photocatalytic performance of TiO 2, and affect the overall degradation efficiency [6,7].…”

Section: Introductionmentioning

confidence: 99%

Waste Textile Reutilization Via a Scalable Dyeing Technology: A Strategy to Enhance Dyestuffs Degradation Efficiency

Zhai

et al. 2022

Adv. Fiber Mater.

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The rapid expansion of the fast fashion industry brings about environmental concerns such as dyestuffs-related water pollutions and waste textiles. Conventional wastewater-disposal strategies emphasize the optimization of photocatalytic activity to improve pollutant degradation efficiency, while the absorptivity, recyclability and sustainability of photocatalysts are always ignored. The overproduced textiles are still in urgent of being recycled and reutilized in eco-friendly approaches. In this work, a scalable dyeing technology is employed to achieve green and sustainable reutilization of waste textiles. The functionalized TiO2/reduced graphene oxide wool fabrics show excellent sustainability, remarkable adsorbing capacity and enhanced photocatalytic performance. By taking advantage of these properties, we develop an integrated strategy of night-time adsorption and day-time photodegradation which could significantly optimize the dyestuffs degradation efficiency. The concept of waste textiles reutilization and wastewater treatment in this work provides practical potential for efficient and sustainable environmental remediation. Graphical abstract Concept of waste textiles reutilization and wastewater treatment.

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Efficient Photocatalytic Degradation of the Persistent PET Fiber-Based Microplastics over Pt Nanoparticles Decorated N-Doped TiO2 Nanoflowers

Cited by 98 publications

References 49 publications

Metal Oxides‐Based Nano/Microstructures for Photodegradation of Microplastics

Metal Oxides‐Based Nano/Microstructures for Photodegradation of Microplastics

Nitrogen doping induced by intrinsic defects of recycled polyethylene terephthalate‐derived carbon nanotubes

Waste Textile Reutilization Via a Scalable Dyeing Technology: A Strategy to Enhance Dyestuffs Degradation Efficiency

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