Polydopamine functionalized cellulose-MXene composite aerogel with superior adsorption of methylene blue

Zhang, Tianmeng; Zhang, Weiwei; Xi, Huan; Li, Qingqing; Shen, Mingxia; Ying, Guobing; Zhang, Jianfeng

doi:10.1007/s10570-021-03737-6

Cited by 69 publications

(40 citation statements)

References 53 publications

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“…The structure of GCN, like that of nitrogen-doped carbon nanotubes and conductive polymers, such as polyaniline, consists of aromatic rings with delocalized π electrons; capable of forming π-π non-electrostatic interactions [25,57]. Hydrogen bonding was formed through the free hydroxyl groups on KP and the hydroxyl groups of CA [58,59].…”

Section: Proposed Mechanismmentioning

confidence: 99%

Energy-Efficient CuO/TiO2@GCN Cellulose Acetate-Based Membrane for Concurrent Filtration and Photodegradation of Ketoprofen in Drinking and Groundwater

et al. 2022

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Photocatalytic membranes possessing both photocatalytic and solid-liquid separation capabilities were developed. These materials are based on ternary 1% CuO/TiO2@GCN (1:9) embedded on cellulose acetate (CA) via the phase inversion method. The CA membranes containing 0.1, 0.3 and 0.5 wt% of 1% CuO/TiO2@GCN (1:9) (CTG–100, CTG–300 and CTG–500) were fabricated. The deposition of 1% CuO/TiO2@GCN (1:9) onto the CA membranes and the consequential changes in the materials’ properties were investigated with various characterization techniques. For instance, PXRD, FTIR, and XPS analysis provided evidence that photocatalytic membranes were formed. Electron microscopy and EDX were then used to visualize the photocatalytic membranes and show that the photocatalyst (1% CuO/TiO2@GCN (1:9)) was well dispersed onto the CA membrane. On the other hand, the properties of the photocatalytic membranes were scrutinized, where it was found that the membranes had a sponge-like morphology and that was significantly less hydrophilic compared to neat CA. The removal of KP in water using CTG–500 exhibited over 94% efficiency, while 38% for neat CA was achieved. Water permeability flux improved with increasing 1% CuO/TiO2@GCN (1:9) and hydrophilicity of the membranes. The electrical energy consumption was calculated and determined to be significantly lower than that of the CA membrane. The CTG–500 membrane after every cycle showed self-cleaning ability after operation in drinking and groundwater.

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Section: Proposed Mechanismmentioning

confidence: 99%

Energy-Efficient CuO/TiO2@GCN Cellulose Acetate-Based Membrane for Concurrent Filtration and Photodegradation of Ketoprofen in Drinking and Groundwater

et al. 2022

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“…Zhang and colleagues synthesized PDA-functionalized cellulose/MXene composite aerogels (P-M/MX-m) by oxidative polymerization of dopamine and freeze-drying. 102 Due to the abundant functional groups of MXene and PDA, the synthesized P-M/MX-m showed excellent adsorption capacity for MB (168.93 mg g À1 ). Notably, P-M/MX-m is more favorable for the adsorption of MB under high concentration of Cl À and thus can be used for the adsorption of dyes in high salt environment.…”

Section: Adsorption and Removal Of Pollutantsmentioning

confidence: 96%

“…The specially designed BC/MoS 2 aerogel film showed good photocatalytic degradation of MB and heavy metal ions under visible light irradiation, and also had good recyclability. Zhang et al reported a PDAfunctionalized cellulose/MXene composite aerogel (denoted as P-M/MX-m composite aerogel) prepared by oxidative selfpolymerization and freeze-drying, 102 as shown in Fig. 3c.…”

Section: Addition Of Polymers and Biomaterialsmentioning

confidence: 99%

Two-dimensional material-based functional aerogels for treating hazards in the environment: synthesis, functional tailoring, applications, and sustainability analysis

et al. 2022

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“…It was also established that a high concentration of chloride (>3%) enhanced MB removal. [189] Various nanomaterials have been considered in applications such as water remediation. Some articles considered the use of in situ remediations where a pollutant scavenger is directly injected into the contaminant subsurface site.…”

Section: Mxenes As Adsorbentsmentioning

confidence: 99%

Surface Functionalized MXenes for Wastewater Treatment—A Comprehensive Review

et al. 2022

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Over 80% of wastewater worldwide is released into the environment without proper treatment. Whilst environmental pollution continues to intensify due to the increase in the number of polluting industries, conventional techniques employed to clean the environment are poorly effective and are expensive. MXenes are a new class of 2D materials that have received a lot of attention for an extensive range of applications due to their tuneable interlayer spacing and tailorable surface chemistry. Several MXene‐based nanomaterials with remarkable properties have been proposed, synthesized, and used in environmental remediation applications. In this work, a comprehensive review of the state‐of‐the‐art research progress on the promising potential of surface functionalized MXenes as photocatalysts, adsorbents, and membranes for wastewater treatment is presented. The sources, composition, and effects of wastewater on human health and the environment are displayed. Furthermore, the synthesis, surface functionalization, and characterization techniques of merit used in the study of MXenes are discussed, detailing the effects of a range of factors (e.g., PH, temperature, precursor, etc.) on the synthesis, surface functionalization, and performance of the resulting MXenes. Finally, the limits of MXenes and MXene‐based materials as well as their potential future research directions, especially for wastewater treatment applications are highlighted.

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Polydopamine functionalized cellulose-MXene composite aerogel with superior adsorption of methylene blue

Cited by 69 publications

References 53 publications

Energy-Efficient CuO/TiO2@GCN Cellulose Acetate-Based Membrane for Concurrent Filtration and Photodegradation of Ketoprofen in Drinking and Groundwater

Energy-Efficient CuO/TiO2@GCN Cellulose Acetate-Based Membrane for Concurrent Filtration and Photodegradation of Ketoprofen in Drinking and Groundwater

Two-dimensional material-based functional aerogels for treating hazards in the environment: synthesis, functional tailoring, applications, and sustainability analysis

Surface Functionalized MXenes for Wastewater Treatment—A Comprehensive Review

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