Synchronous removal of emulsions and organic dye over palladium nanoparticles anchored cellulose-based membrane

Yu, Qianqian; Jiang, Zishuai; Yu, Yuan; Yang, Haiyue; Sun, Xiaohan; Wang, Chengyu; Ho, Shih‐Hsin

doi:10.1016/j.jenvman.2021.112402

Cited by 14 publications

(3 citation statements)

References 37 publications

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“…However, most polymeric membranes load and immobilize Pd NPs via the addition of an external reducing agent [17,18], adhesion agent, and protecting ligand, contributing to their low chemical activity [19][20][21][22][23]. Biomass materials like cellulose and chitosan are used to support Pd NPs because of their high chemical activity, and because they can be widely sourced [24]. This can effectively reduce the use of additional reagents such as reducing agents and stabilizers.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Method for Wood Aerogel Preparation with Efficient Catalytic Reduction of 4-Nitrophenol

Yu,

Sun,

Liu

et al. 2023

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The advancement of science and technology and the growth of industry have led to an escalating discharge of domestic sewage and industrial wastewater containing dyes. This surge in volume not only incurs higher costs but also exacerbates environmental burdens. However, the benefits of green and reusable catalytic reduction materials within dye processes are still uncertain. Herein, this study utilized the eco-friendly deep eutectic solvent method (DESM) and the chlorite-alkali method (CAM) to prepare a cellulose-composed wood aerogel derived from natural wood for 4-nitrophenol (4-NP) reduction. The life cycle assessment of wood aerogel preparative process showed that the wood aerogel prepared by the one-step DESM method had fewer environmental impacts. The CAM method was used innovatively to make uniform the chemical functional groups of different wood species and various wood maturities. Subsequently, palladium nanoparticles (Pd NPs) were anchored in the skeleton structure of the wood aerogel with the native chemical groups used as a reducing agent to replace external reducing agents, which reduced secondary pollution and prevented the agglomeration of nanoparticles. Results showed that the catalytic reduction efficiency of 4-NP can reach 99.8%, which shows promises for applications in wastewater treatment containing dyes. Moreover, investigation of the advantages of preparation methods of wood aerogel has important implications for helping researchers and producers choose suitable preparation strategies according to demand.

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Section: Introductionmentioning

confidence: 99%

Eco-Friendly Method for Wood Aerogel Preparation with Efficient Catalytic Reduction of 4-Nitrophenol

Yu,

Sun,

Liu

et al. 2023

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“…However, these metal NPs can be immobilized onto appropriate supports enhancing their recovery, reusability, durability, catalytic efficiency, and cost effectiveness. Different materials such as graphene oxide, [17][18][19] iron oxide, [20][21][22] titanium dioxide, [23][24][25] zeolites, [26][27][28][29] carbon nanotubes, [30][31][32] polymers, [33][34][35][36] chitosan [37][38][39][40] and cellulose [41][42][43][44] have been used as substrates for the immobilization of Pd NPs.…”

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confidence: 99%

“…Immobilizing Pd NPs in polymer membranes is one of the viable techniques being employed by researchers. Yu et al 44 anchored Pd NPs on cellulose-top layered PVDF membrane and efficiently degraded methylene blue dye in the presence of NaBH 4 . Jia et al 45 used polypropylene hollow fiber membranes as substrates for Pd NPs and effectively degraded congo red.…”

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confidence: 99%

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Ndlovu

Malatjie

Donga

et al. 2022

J of Applied Polymer Sci

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Azo dyes effluent can cause severe and chronic effects to living organisms since they are toxic, carcinogenic, and mutagenic. They color water, reduce dissolved oxygen, block light penetration, decrease the rate of photosynthesis and adversely affect the whole aquatic biota. Catalysis is one of the methods used in degrading azo dyes to less harmful species. Catalytic palladium nanoparticles (Pd NPs) are effective in the degradation of azo dyes owing to their large surface area and unique electronic properties. However, they are costly, unstable and easily aggregate; hence, a substrate is necessary to enhance their stability, reusability, durability, catalytic efficiency, and cost effectiveness.Herein, Pd NPs were in-situ synthesized and immobilized in beta cyclodextrin (β-CD) modified polyvinylidene-fluoride (PVDF) membranes. The fabricated membranes were characterized using different techniques. Pd NPs slightly improved the properties and performance of the membranes. A complete catalytic degradation of methyl orange azo dye was carried out within 20 min in the presence of sodium borohydride and the increase in Pd NP content increased the rate of degradation. The membranes were recycled and reused five times with no considerable loss of catalytic performance. Therefore, PVDF/β-CD-Pd membranes proved to be self-cleaning, reusable, and efficient in removal of methyl orange from water.

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Electric Field Driven of Tourmaline/g‐C₃N₄ Photocatalyst with Enhanced Photocatalytic Performance and High‐Efficient Pollutant Degradation

Sun,

Zhu,

et al. 2024

Advanced Sustainable Systems

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Photocatalysis technology of g‐C3N4 is of great value in wastewater treatment, thus calling for developing a concise and high‐efficiency method to improve its photocatalytic efficiency. Here, a novel photocatalyst consisting of tourmaline particles (TPs) and graphitic carbon nitride (g‐C3N4) is prepared by a step calcining method with enhanced photocatalytic performance. The self‐polarized electric field of TPs attracts the photogenerated electrons generated by the catalyst and delays the recombination rate of electron‐hole pairs, for which reason the prepared photocatalyst exhibits a wider spectral response and stronger photocatalytic activity. The mechanism analysis exhibits that the reactive substances including h+, ·OH, 1O2, and ·O2− generated by TPs/g‐C3N4 effectively eliminate the contaminant during photocatalysis. The degradation efficiency of Rhodamine B (RhB) of g‐C3N4‐0.5% TPs is increased from 88.47% to 97.76% after 30 min illumination compared with pure g‐C3N4. Furthermore, to facilitate catalyst recycling and reuse, a photocatalytic lignocellulose membrane is prepared. After five cycles, the degradation efficiency of the membrane decreases from 97.89% to 95.54%, still maintaining 97.60%. This study has constructed an innovative tourmaline/g‐C3N4 photocatalyst and recyclable photocatalytic lignocellulose membrane with enhanced pollutant degradation properties by introducing naturally polarized minerals, providing a new approach for efficient water treatment.

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Synchronous removal of emulsions and organic dye over palladium nanoparticles anchored cellulose-based membrane

Cited by 14 publications

References 37 publications

Eco-Friendly Method for Wood Aerogel Preparation with Efficient Catalytic Reduction of 4-Nitrophenol

Eco-Friendly Method for Wood Aerogel Preparation with Efficient Catalytic Reduction of 4-Nitrophenol

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Electric Field Driven of Tourmaline/g‐C₃N₄ Photocatalyst with Enhanced Photocatalytic Performance and High‐Efficient Pollutant Degradation

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Synchronous removal of emulsions and organic dye over palladium nanoparticles anchored cellulose-based membrane

Cited by 14 publications

References 37 publications

Eco-Friendly Method for Wood Aerogel Preparation with Efficient Catalytic Reduction of 4-Nitrophenol

Eco-Friendly Method for Wood Aerogel Preparation with Efficient Catalytic Reduction of 4-Nitrophenol

Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles

Electric Field Driven of Tourmaline/g‐C3N4 Photocatalyst with Enhanced Photocatalytic Performance and High‐Efficient Pollutant Degradation

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Product

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Electric Field Driven of Tourmaline/g‐C₃N₄ Photocatalyst with Enhanced Photocatalytic Performance and High‐Efficient Pollutant Degradation