Microplastic degradation by hydroxy-rich bismuth oxychloride

Jiang, Runren; Lu, Guanghua; Yan, Zhenhua; Liu, Jianchao; Wu, Donghai; Wang, Yonghua

doi:10.1016/j.jhazmat.2020.124247

Cited by 158 publications

(41 citation statements)

References 55 publications

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“…Detailed studies showed that the hydroxyl ions or water on the catalyst surface could trap the photogenerated holes and facilitate the generation of •OH radicals, accelerating the degradation rate. In addition, Jiang et al 96 designed ultra-thin BiOCl nanosheets with hydroxyl-rich surfaces. The surface hydroxyl content can be effectively tuned by introducing different mannitol amounts to improve the catalyst dispersion in water and adsorption capacity to polyolefins.…”

Section: Photocatalysismentioning

confidence: 99%

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Sustainable chemical upcycling of waste polyolefins by heterogeneous catalysis

Chu

Yang

et al. 2022

SusMat

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The mass production of disposable polyolefin products has led to serious plastic pollution and an imbalance between manufacturing and recycling. Given these challenges, the chemical upcycling of waste polyolefins has attracted extensive attention due to its high efficiency and economic benefits. Herein, we review the development of polyolefin chemical upcycling in heterogeneous catalysis. The status quo of polyolefin recycling is first discussed. We then introduce the advanced strategies for chemical upcycling in the view of different value‐added products and discuss their challenges and prospects. Our in‐depth analysis centers on the catalytic mechanism and the design principle of heterogeneous catalysts. Finally, we outlook the promising directions to facilitate the degradation process via polymer and catalyst design and optimized catalytic engineering. Innovative strategies are expected to promote the chemical upcycling of polyolefins, bringing great promise for the sustainable development of society.

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Section: Photocatalysismentioning

confidence: 99%

Section: Chemical Upcycling Strategies Of Polyolefinsmentioning

confidence: 99%

Sustainable chemical upcycling of waste polyolefins by heterogeneous catalysis

Chu

Yang

et al. 2022

SusMat

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“…4(a), on the one hand, CNNs shows appreciable PL quenching as compared with BCN, revealing that the recombination rate of photogenerated electron-hole pairs is substantially suppressed. 44,45 On the other hand, the PL emission spectra of CNNs also exhibits a blue shift with respect to BCN, indicating the broadened bandgap energy (E g ) of CNNs. The separation and transfer ability of electron-hole pairs then were examined by EIS analysis.…”

Section: Resultsmentioning

confidence: 99%

Ultrathin 2D g‐C₃N₄ nanosheets for visible‐light photocatalytic reforming of cellulose into H₂ under neutral conditions

Hong

Zhang

Lin

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND: The photocatalytic reforming (PR) of abundant and renewable cellulosic biomass resources into hydrogen (H 2 ) fuel is a promising approach for solar-to-chemical energy conversion. Although the related PR reactions have been investigated, the majority of previous works were operated in strong alkaline conditions (pH > 14) owing to the insolubility of cellulose, and used UV-driven titania (TiO 2 )-based materials as photocatalysts.RESULTS: To this end, for the first time, we present ultrathin 2D graphitic-like carbon nitride (g-C 3 N 4 ) nanosheets (CNNs) derived from the thermal-oxidation strategy for PR of cellulose into H 2 under neutral conditions. Compared to bulk g-C 3 N 4 (BCN), the resulting ultrathin CNNs with an average thickness of 6 nm showed a remarkably increased surface area, significantly improved photogenerated charge mobility, higher electrical conductivity and stronger photooxidation capacity. Consequently, the as-prepared CNNs displayed dramatically enhanced visible-light PR activity for H 2 evolution that was 3.93-fold greater than that of BCN under the same conditions. CONCLUSION: Our study achieves an available avenue for PR of cellulose into H 2 under neutral conditions without the need for value-added sacrificial reagents, which will bring about potential applications in sustainable H 2 production through the PR reaction.

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“…153 Meanwhile, BiOCl based catalyst has been used for the photocatalytic degradation of MPs under visible light. Jiang et al 154 prepared the hydroxy-rich ultrathin BiOCl at room temperature for the decomposition of HDPE while the highest mass loss was 5.38% after 5 h of reaction which was 24 times higher than pure BiOCl. The significant performance of BiOCl can be ascribed to the surface hydroxyl group which helps in better dispersion in water, MPs adsorption, and hydroxyl radical production.…”

Section: Engineering Approach For Microplastic Degradationmentioning

confidence: 99%

Mechanisms and the Engineering Approaches for the Degradation of Microplastics

2021

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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.

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Microplastic degradation by hydroxy-rich bismuth oxychloride

Cited by 158 publications

References 55 publications

Sustainable chemical upcycling of waste polyolefins by heterogeneous catalysis

Sustainable chemical upcycling of waste polyolefins by heterogeneous catalysis

Ultrathin 2D g‐C₃N₄ nanosheets for visible‐light photocatalytic reforming of cellulose into H₂ under neutral conditions

Mechanisms and the Engineering Approaches for the Degradation of Microplastics

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Microplastic degradation by hydroxy-rich bismuth oxychloride

Cited by 158 publications

References 55 publications

Sustainable chemical upcycling of waste polyolefins by heterogeneous catalysis

Sustainable chemical upcycling of waste polyolefins by heterogeneous catalysis

Ultrathin 2D g‐C3N4 nanosheets for visible‐light photocatalytic reforming of cellulose into H2 under neutral conditions

Mechanisms and the Engineering Approaches for the Degradation of Microplastics

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Product

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Ultrathin 2D g‐C₃N₄ nanosheets for visible‐light photocatalytic reforming of cellulose into H₂ under neutral conditions